Allurion (ALUR) S-1IPO registration

The information in this preliminary prospectus is not complete and may be changed. These securities may not be issued until the registration statement filed with the U.S. Securities and Exchange Commission is effective. This preliminary prospectus is not an offer to sell these securities and does not constitute the solicitation of an offer to buy these securities in any jurisdiction where the offer or sale is not permitted.

SUBJECT TO COMPLETION, DATED DECEMBER 9, 2024

PRELIMINARY PROSPECTUS

ALLURION TECHNOLOGIES, INC.

Up to      Shares of Common Stock

Common Warrants to Purchase up to      Shares of Common Stock

Pre-Funded Warrants to Purchase up to      Shares of Common Stock

     Shares of Common Stock Underlying the Common Warrants

     Shares of Common Stock Underlying the Pre-Funded Warrants

We are offering up to $     of shares of our common stock, or a pre-funded warrant in lieu thereof, and new warrants to purchase up to an aggregate of      shares of our common stock (the “common warrants”). This prospectus also relates to the offering of the shares of our common stock issuable upon the exercise of such warrants.

The shares of common stock and the accompanying common warrants can only be purchased together in this offering but will be issued separately and will be immediately separable upon issuance. Each purchaser of one share of our common stock will receive one common warrant per share of common stock purchased thereby. Each common warrant may be exercised for one share of our common stock. The common warrants will be immediately exercisable upon issuance at an exercise price of $     per share and will expire five years from the date of issuance, subject to certain limitations described herein.

We are also offering to each purchaser whose purchase of shares of our common stock in this offering would otherwise result in the purchaser, together with its affiliates and certain related parties, beneficially owning more than 4.99% (or, at the election of the holder, 9.99%) of our outstanding shares of common stock immediately following consummation of this offering, the opportunity to purchase, if the purchaser so chooses, pre-funded warrants to purchase shares of common stock in lieu of shares of common stock. Each pre-funded warrant will be exercisable for one share of our common stock. The purchase price of each pre-funded warrant will equal the price per share of common stock being sold to the public in this offering, minus $0.0001, and the exercise price of each pre-funded warrant will be $0.0001 per share. The pre-funded warrants will be immediately exercisable and may be exercised at any time until all of the pre-funded warrants are exercised in full. The pre-funded warrants and common warrants are immediately separable and will be issued separately in this offering, but must be purchased together in this offering. This prospectus also covers the shares of common stock issuable from time to time upon the exercise of the pre-funded warrants and common warrants. For each pre-funded warrant that we sell, the number of shares of our common stock that we are offering will be decreased on a one-for-one basis. The pre-funded and common warrants will not be listed on the NYSE and are not expected to trade in any market, however we anticipate that the shares of our common stock to be issued upon exercise of the pre-funded and common warrants will trade on the NYSE.

We have retained Roth Capital Partners, LLC to act as our exclusive placement agent for this offering. We have agreed to pay the placement agent the placement agent fees set forth in the table below, which assumes that we sell all of the securities we are offering and to provide certain other compensation to the placement agent. The placement agent is not required to arrange for the sale of any specific number or dollar amount of securities but will use reasonable best efforts to arrange for the sale of the securities. Because there is no minimum offering amount required as a condition to closing in this offering, the actual public amount, placement agent fees, and proceeds to us, if any, are not presently determinable and may be substantially less than the total maximum offering amounts set forth above and throughout this prospectus.

The securities will be offered at a fixed price and are expected to be issued in a single closing. The offering will terminate on     , unless (i) the closing occurs prior thereto or (ii) we decide to terminate the offering prior thereto (which we may do at any time in our discretion). Investors purchasing securities offered hereby will have the option to execute a securities purchase agreement with us. We expect that the closing of the offering will occur one trading day after we price the securities offered hereby. When we price the securities, we will simultaneously enter into securities purchase agreements relating to the offering with those investors who so choose. The offering will settle delivery versus payment (“DVP”)/receipt versus payment (“RVP”). That is, on the closing date, we will issue the shares of our common stock directly to the account(s) at the placement agent identified by each purchaser; upon receipt of such shares, the placement agent shall promptly electronically deliver such shares to the applicable purchaser, and payment therefor shall be made by the placement agent (or its clearing firm) by wire transfer to us.

Our common stock is listed on the New York Stock Exchange (“NYSE”) under the symbol “ALUR”, and the last reported sale price of our common stock on the NYSE on December 6, 2024 was $0.37. Our existing public warrants (the “Public Warrants”) are listed on the NYSE under the symbol “ALUR WS,” and the last reported sale price of the Public Warrants on the NYSE on December 6, 2024 was $0.035 per warrant. Our July 2024 Public Warrants (as defined herein) have an exercise price of $1.20 per warrant. Neither the pre-funded warrants nor the common warrants offered as part of this offering have the same terms and conditions as our Public Warrants or July 2024 Public Warrants. The actual number of securities, and the combined public offering price per share of common stock and the accompanying common warrants (and pre-funded warrants), and the exercise price for the accompanying common warrants will be as determined between us, the placement agent and investors at the time of pricing, and may be at a discount to the current market price of our common stock and the Public Warrants. Therefore, the recent market prices used throughout this prospectus may not be indicative of the actual public offering price of the shares of common stock and accompanying common warrants offered hereunder. Currently, there is no public market for the pre-funded warrants and common warrants offered hereunder. In addition, we do not intend to apply for a listing of the pre-funded warrants or common warrants on the NYSE or any other national securities exchange or nationally recognized trading system.

We are an “emerging growth company” and a “smaller reporting company” under the federal securities laws and are subject to reduced public company reporting requirements. See “Prospectus Summary—Implications of Being an Emerging Growth Company and a Smaller Reporting Company.”

We expect to deliver the securities against payment on or about     , 2024, subject to satisfaction of customary closing conditions.

Investing in our securities involves a high degree of risk. Before buying any securities, you should carefully read the discussion of the risks of investing in our securities in “Risk Factors” beginning on page 13 of this prospectus.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or passed upon the adequacy or accuracy of this prospectus. Any representation to the contrary is a criminal offense.

Placement Agent

Roth Capital Partners

    , 2024

TABLE OF CONTENTS

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ABOUT THIS PROSPECTUS

You should rely only on the information contained in this prospectus, any amendment or supplement to this prospectus, and any related free writing prospectus prepared by or on behalf of us or to which we have referred you. Neither we nor the placement agent have authorized anyone to provide you with information that is different from, or in addition to, that contained in this prospectus, any amendment or supplement to this prospectus and any related free writing prospectus prepared by or on behalf of us or to which we have referred you. We and the placement agent take no responsibility for, and can provide no assurance as to the reliability of, any other information that others may give you.

This prospectus is not an offer to sell, nor is it seeking an offer to buy, these securities in any jurisdiction where the offer or sale is not permitted. The information contained in this prospectus is accurate only as of the date of this prospectus, regardless of the time of delivery of this prospectus or of any sale of the securities offered hereby. Our business, financial condition, results of operations and prospects may have changed since that date.

Neither we nor the placement agent have taken any action that would permit this offering, or possession or distribution of this prospectus, in any jurisdiction where action for that purpose is required, other than in the United States. Persons who have come into possession of this prospectus in a jurisdiction outside the United States are required to inform themselves about and to observe any restrictions relating to this offering and the distribution of this prospectus applicable to that jurisdiction.

This prospectus contains summaries of certain provisions contained in some of the documents described herein, but reference is made to the actual documents for complete information. All of the summaries are qualified in their entirety by the actual documents. Copies of some of the documents referred to herein have been filed or will be filed as exhibits to the registration statement of which this prospectus is a part, and you may obtain copies of those documents as described below under “Where You Can Find More Information.”

Unless the context otherwise requires, all references herein to “Allurion,” “the Company,” “we,” “us,” or “our” refer to the business and operations of Legacy Allurion (as defined below) and its consolidated subsidiaries prior to consummation of the Business Combination (as defined below) and to New Allurion (as defined below) and its consolidated subsidiaries following the consummation of the Business Combination. “Legacy Allurion” refers to Allurion Technologies, LLC, which was previously known as Allurion Technologies Opco, Inc. (formerly Allurion Technologies, Inc.) prior to the consummation of the Business Combination. “New Allurion” refers to Allurion Technologies, Inc., which was previously known as Allurion Technologies Holdings, Inc. prior to the consummation of the Business Combination.

This document contains references to trademarks and service marks belonging to other entities. Solely for convenience, trademarks and trade names referred to in this prospectus may appear without the ^® or ^™ symbols, but such references are not intended to indicate, in any way, that the applicable licensor will not assert, to the fullest extent under applicable law, its rights to these trademarks and trade names. We do not intend our use or display of other companies’ trade names, trademarks or service marks to imply a relationship with, or endorsement or sponsorship of us by, any other companies.

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CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING STATEMENTS

Certain statements in this prospectus may constitute “forward-looking statements” within the meaning of the U.S. federal securities laws, including the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, but are not limited to, statements regarding the plans, strategies and prospects, both business and financial, of Allurion. These statements are based on the beliefs and assumptions of our management. Although we believe that our plans, intentions and expectations reflected in or suggested by these forward-looking statements are reasonable, we cannot assure you that we will achieve or realize these plans, intentions or expectations. Forward-looking statements are inherently subject to risks, uncertainties and assumptions. Generally, statements that are not historical facts, including statements concerning possible or assumed future actions, business strategies, events, or results of operations, are forward-looking statements. These statements may be preceded by, followed by or include the words “believes,” “estimates,” “expects,” “projects,” “target,” “goal,” “forecasts,” “may,” “will,” “potential,” “should,” “would,” “could,” “future,” “seeks,” “plans,” “predicts,” “propose,” “scheduled,” “anticipates,” “intends,” or similar expressions.

Forward-looking statements in this prospectus include, but are not limited to, statements about our ability to:

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We have based the forward-looking statements contained in this prospectus primarily on our current expectations and projections about future events and trends that we believe may affect our business, financial condition, results of operations, prospects, business strategy, and financial needs. The outcome of the events described in these forward-looking statements is subject to risks, uncertainties, assumptions and other factors described in the section entitled “Risk Factors” beginning on page 14 and elsewhere in this prospectus. These risks are not exhaustive. Other sections of this prospectus include additional factors that could adversely impact our business and financial performance. Moreover, we operate in very competitive and rapidly changing environments. New risks and uncertainties emerge from time to time and it is not possible for us to predict all risks and uncertainties that could have an impact on the forward-looking statements contained in this prospectus.

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We cannot assure you that the results, events and circumstances reflected in the forward-looking statements will be achieved or occur, and actual results, events or circumstances could differ materially from those described in the forward-looking statements.

In addition, statements that “we believe” and similar statements reflect our beliefs and opinions on the relevant subject. These statements are based upon information available to us as of the date of this prospectus, and while we believe such information forms a reasonable basis for such statements, such information may be limited or incomplete, and such statements should not be read to indicate that we have conducted an exhaustive inquiry into, or review of, all potentially available relevant information. These statements are inherently uncertain and investors are cautioned not to unduly rely upon these statements. We undertake no obligation to update or revise any forward-looking statements, whether as a result of new information, future events, or otherwise, except as may be required under applicable securities laws.

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RISK FACTORS

Investing in our securities involves a high degree of risk. Before you decide to invest in our securities, you should consider carefully the risks described below, together with the other information contained in this prospectus, including our financial statements and the related notes appearing at the end of this prospectus. We believe the risks described below are the risks that are material to us as of the date of this prospectus. Additional risks and uncertainties not presently known to us or that we currently deem immaterial also may impair our business operations. If any of the following risks actually occur, our business, results of operations and financial condition would likely be materially and adversely affected. In these circumstances, the market price of our securities could decline, and you may lose part or all of your investment.

Risks Related to the Development and Commercialization of Our Products

We expect to incur losses for the foreseeable future, our ability to achieve and maintain profitability depends on the commercial success of the Allurion Balloon, and we expect our revenues to continue to be driven primarily by sales of the Allurion Balloon.

We have incurred losses to date and expect to continue to incur losses for the foreseeable future. Sales of the Allurion Balloon and related accessories, which have occurred outside of the U.S. because we have not yet obtained the regulatory approval required to sell our products within the U.S., accounted for substantially all of our revenues for the years ended December 31, 2023 and 2022 and the nine months ended September 30, 2024 and 2023, and we expect our revenues to continue to be driven primarily by sales of the Allurion Balloon. In order to achieve and sustain profitability, our revenues from sales of the Allurion Balloon will need to grow beyond the levels we have achieved in the past. If health care providers and/or patients do not perceive our products to be competitive in features, efficacy and safety when compared to other products in the market, or if demand for the Allurion Balloon or for weight loss procedures and programs in general decreases, we may fail to achieve sales levels that provide for future profitability.

Our ability to successfully market the Allurion Balloon and our other current and future product and service offerings depends on numerous factors, including but not limited to:

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Some of these factors are beyond our control. For example, on August 6, 2024, we announced that the Agence Nationale de Sécurité du Médicament (“ANSM”) suspended sales of the Allurion Balloon in France, and that we are withdrawing the Allurion Balloon from the French market, pending implementation of a remediation plan to reduce certain risks associated with the advertising, follow-up program, and adverse events for the Allurion Balloon. There is no guarantee that we will be able to successfully implement a remediation plan to the satisfaction of ANSM and we could be delayed or prevented from resuming sales of the Allurion Balloon in France. In addition, a withdrawal from the market in one country may have a negative effect on the regulatory approval process and ability to sell and commercialize the Allurion Balloon in other countries, and on the market acceptance of the Allurion Balloon. Any of these events may have an adverse effect on our business, financial condition, results of operations and growth prospects.

If we are unable to continue to commercialize the Allurion Balloon and our other current and future products and services, or are unable to obtain a distributor or partner to commercialize them, we may not be able to produce any incremental revenues related to the Allurion Balloon and our other current and future products and services. This would result in an adverse effect on our business, financial condition, results of operations and growth prospects.

We have a limited operating history and may face difficulties encountered by companies early in their commercialization in competitive and rapidly evolving markets.

The Allurion Balloon has been marketed in countries outside of the United States since 2016, and as such, we have a limited operating history upon which to evaluate our business and forecast our future revenue and operating results. In assessing our business prospects, you should consider the various risks and difficulties frequently encountered by companies early in their commercialization in competitive markets, particularly companies that develop and sell medical devices. These risks include our ability to:

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Due to our limited operating history, we may not have the institutional knowledge or experience to be able to effectively address these and other risks that we may face. In addition, we may not be able to develop insights into trends that could emerge and negatively affect our business and may fail to respond effectively to those trends. As a result of these or other risks, we may not be able to execute key components of our business strategy, and our business, financial condition and operating results may suffer.

We do not expect that health care providers or patients will receive third-party reimbursement for treatment with our products. As a result, we expect that our success will depend on the ability and willingness of health care providers to adopt self-pay practice management infrastructure and of patients to pay out-of-pocket for treatment with our products.

Certain elective treatments, such as an intragastric balloon, are typically not covered by insurance. Accordingly, we do not expect that any third-party payors will cover or reimburse health care providers or patients for the Allurion Program. As a result, we expect that our success will depend on the ability and willingness of health care providers that may not have historically operated a self-pay practice to adopt the policies and procedures needed to successfully operate such a practice. Our sales and marketing efforts have historically targeted bariatric surgeons, gastroenterologists, plastic surgeons and other health care providers.

Although many of these health care providers are accustomed to selling cash-pay services in their practices, some are primarily accustomed to providing services that are reimbursed by third-party payors. As a result, these health care providers may need to augment their administrative staff and billing procedures to address the logistics of a self-pay practice. If health care providers are unable or unwilling to make such changes, adoption of our products may be slower than anticipated.

Our success will also depend on the ability and willingness of patients to pay out-of-pocket for treatment with our products. Adverse changes in the economy, including from heightened inflation, higher interest rates, and geopolitical conflicts such as the Russia-Ukraine war and the Israel-Hamas war, may cause consumers to reassess their spending choices and reduce the demand for elective treatments and could have an adverse effect on consumer spending. This shift could have an adverse effect on our revenues and operating results. In addition, the operations of the medical device distributors upon whom we rely to sell our products may be negatively impacted by any such adverse economic changes. If our distributors are unable to maintain their operations and effectively market and sell our products, our results of operations and business may suffer. Furthermore, consumer preferences and trends may shift due to a variety of factors, including changes in demographic and social trends, public health initiatives and product innovations, which may reduce consumer demand for our products. The decision by a patient to elect to undergo treatment with the Allurion Balloon may be influenced by a number of additional factors, such as:

Our financial performance will be materially harmed if we cannot generate significant customer demand for the Allurion Balloon.

Changes in coverage and reimbursement for obesity treatments and procedures could affect the adoption of the Allurion Program and our future revenues.

Historically, intragastric balloon products are not reimbursed by third-party payors, although a very limited number of balloon procedures have recently been subject to reimbursement in the U.K. market. We do not

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currently plan on submitting any requests to any third-party payor for coverage or billing codes specific to our products other than our partnership with the National Health Service in the United Kingdom. However, payors may change their coverage and reimbursement policies for intragastric balloon products as a category and/or for other obesity treatments and procedures, and these changes could negatively impact our business. For example, healthcare reform legislation or regulation that may be proposed or enacted in the future that results in a favorable change in coverage and reimbursement for competitive products and procedures in weight loss and obesity could also negatively impact adoption of our products and our future revenues, and our business could be harmed as we would be at an economic disadvantage when competing for customers. For more information, see section entitled “ Business - Government Regulation - Other U.S. Healthcare Laws - Coverage, Reimbursement and Healthcare Reform.”

The failure of the Allurion Balloon to achieve and maintain market acceptance could result in us achieving sales below our expectations, which would cause our business, financial condition and operating results to be materially and adversely affected.

Our current business and growth strategy is highly dependent on the Allurion Balloon achieving and maintaining market acceptance. In order for us to sell our products to healthcare providers and, ultimately, weight loss patients, we must convince them that our products are an attractive alternative to competitive treatments for patients who are obese and overweight, including traditional pharmaceutical therapies and more aggressive bariatric surgical treatments, such as gastric bypass and sleeve gastrectomy. Market acceptance and adoption of the Allurion Balloon depends on educating health care providers on its safe and appropriate use, as well as the cost, safety, comfort, tolerability, ease of use, and effectiveness of the Allurion Program compared to other treatments. If we are not successful in convincing existing and potential customers of the benefits of our product, or if we are not able to achieve the support of health care providers for our product, our sales may decline or we may achieve sales below our expectations.

Market acceptance of our products could be negatively impacted by many factors, including:

In addition, the rapid evolution of technology and treatment options within our industry may cause consumers to delay the purchase of our products in anticipation of advancements or breakthroughs, or the perception that advancements or breakthroughs could occur, in our products or the products offered by our competitors. It is also possible that consumers interested in purchasing any of our future products currently under development may delay the purchase of one of our current products. In addition, customers may delay their purchasing decisions, or health care providers may refrain from providing our products, as a result of a global pandemic or unfavorable changes in general economic conditions.

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If the Allurion Balloon, or any other therapy or product that we may develop, does not achieve and maintain widespread market acceptance, we may fail to achieve sales consistent with our projections, in which case our business, financial condition and operating results could be materially and adversely affected.

A substantial proportion of our sales are through third-party distributors, and we do not have direct control over the efforts these distributors may use to sell our products. If our relationships with these distributors deteriorate, or if these distributors fail to sell our products or engage in activities that harm our reputation, or fail to adhere to medical device regulations, our financial results may be negatively affected.

Historically, our sales model has been to sell primarily through distributors rather than through our own sales force, but recently we have begun to transition certain territories to both a direct sales model and a hybrid sales model that includes both distributors and a direct sales effort. We believe that our reliance on distributors improves the economics of our business, as we do not carry the high fixed costs of a large direct sales force in many of the countries in which the Allurion Balloon is commercially available. If we are unable to maintain or enter into such distribution arrangements on acceptable terms, or at all, we may not be able to successfully commercialize our products in certain countries. Furthermore, distributors can choose the level of effort that they apply to selling our products relative to others in their portfolio. The selection, training, and compensation of distributors’ sales personnel are within the distributor’s control rather than our own and may vary significantly in quality from distributor to distributor.

In addition, although our contract terms require our distributors to comply with all applicable laws regarding the sale of our products, including anti-competition, anti-money laundering, sanctions laws and FDA and other health care regulations, we may not be able to ensure proper compliance. If our distributors fail to effectively market and sell our products in full compliance with applicable laws, our results of operations and business may suffer.

In certain large markets, we engage in direct sales efforts. We may fail to maintain and develop our direct sales force, and our revenues and financial outcomes could suffer as a result. Furthermore, our direct sales personnel may not effectively sell our products.

We engage in direct sales efforts in over 20 countries. We have hired and will need to retain and motivate a significant number of sales and marketing personnel in order to support our anticipated growth in these and other new countries. There is significant competition for quality personnel experienced in such activities, including from companies with greater financial resources than ours. If we are not successful in our efforts to continue recruiting, retaining, and motivating such personnel, we may not be able to increase our revenues, or we may increase our expenses in greater measure than our revenues, negatively impacting our operating results.

We are also working on creating a direct sales structure and strategy in certain markets. We are working to put in place the correct legal and business structure to comply with taxation and operational requirements. These structures may not ultimately be implemented or, if implemented, be successful or effective and may not be able to increase our revenues or improve our gross margins. In addition, our expenses or tax-related costs may increase in greater measure than our revenues, negatively impacting our operating results.

Furthermore, our sales force may operate independently with limited day-to-day oversight from management. They may engage in sales practices that increase certain risks to our business, including the risk of scrutiny from regulatory authorities and the risk that we violate anti-corruption regulations in one or more countries. These and other independent actions may result in unexpected costs, news that might impair our reputation or revenues, litigation in various jurisdictions, and/or sanctions. Any of these could impair the trading price of our common stock and adversely impact our results.

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The effectiveness and safety of the Allurion Balloon depends critically on our ability to educate health care providers on its safe and proper use. If we are unable to do so, we may not achieve our expected growth and may be subject to risks and liabilities.

In addition to educating health care providers on the clinical benefits of the Allurion Balloon, we must also train health care providers on the safe and appropriate use of the Allurion Balloon. If we are unable to provide an adequate training program with respect to the Allurion Balloon, product misuse may occur that could lead to serious adverse events. Many health care providers may be unfamiliar with such treatments or find it more complex than competitive products or alternative treatments. As such, there is a learning process involved for health care providers to become proficient in the use of our products and it may take several procedures for a health care provider to be able to use the Allurion Balloon comfortably. In addition, it is also critical for health care providers to be educated and trained on best practices in order to achieve optimal results, including patient selection and eligibility criteria, as well as complementary methods of use such as diet or behavioral modification programs. Convincing health care providers to dedicate the time and energy necessary for adequate training is challenging, and we cannot assure you that we will be successful in these efforts. This training process may also take longer than we expect. In the event that health care providers are not properly trained in the use of the Allurion Balloon, they may misuse or ineffectively use our products for the treatment of patients. As a result, patients may experience adverse events or not be able to enjoy the benefits of our program or achieve the weight loss outcomes they expect, leading to dissatisfaction and market rejection of our products. In addition, misuse of our products in any stage of the treatment may result in, among other things, patient injury, adverse side effects, negative publicity or lawsuits against us. Any of these events could have an adverse effect on our business and reputation.

The misuse or off-label use of our products may harm our image in the marketplace, result in injuries that lead to product liability suits or result in costly investigations and sanctions by regulatory bodies if we are deemed to have engaged in the promotion of these uses, any of which could be costly to our business.

The Allurion Balloon has been approved or cleared by regulatory authorities in the countries in which we sell it or in which we conduct our operations for specific indications. We do not promote the Allurion Balloon for uses outside of approved or cleared indications for use, known as “off-label uses.” We cannot, however, prevent a health care provider from using our product off-label, when in the health care provider’s independent professional medical judgment he or she deems it appropriate. There may be increased risk of injury to patients if health care providers attempt to use our product off-label. Furthermore, the use of our product for indications other than those approved or cleared by regulatory authorities may not effectively treat such conditions, which could harm our reputation in the marketplace among physicians and patients.

Health care providers may also misuse our products, use improper techniques, ignore or disregard product warnings, contraindications or other information provided in training materials or product labeling, fail to obtain adequate training, fail to inform patients of the risks associated with procedures that utilize our product or fail to solicit sufficient information from patients regarding their health status or medical histories, any of which may potentially lead to injury and an increased risk of product liability claims. If our product is misused or used with improper techniques or insufficient information, we may become subject to costly litigation by our health care providers or their patients. Moreover, if patients fail to disclose medical conditions or to follow the pre- and post-placement instructions, medication program, and dietary guidelines in connection with their treatment with the Allurion Balloon, there is the risk of injury. Such patients may also fail to achieve their desired results, which could harm our image in the marketplace.

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There is no guarantee that the FDA or non-U.S. regulatory agencies will grant approval or clearance for our current or future products, including the Allurion Balloon. Failure to obtain regulatory approvals or clearances in the United States and other international jurisdictions, or revocation of approvals or clearances in those jurisdictions, will prevent us from marketing our products in such jurisdictions.

We intend to seek regulatory approval or clearance of our current and future products in the United States and certain non-U.S. jurisdictions. We have obtained a CE Mark for the Allurion Balloon and are therefore authorized to sell in the EU; however, in order to market in regions such as the United States, the Asia Pacific region and many other jurisdictions, we must obtain separate regulatory approvals or clearances.

The procedures for approval vary among countries and can involve additional clinical testing, and the time required to obtain approval or clearance may differ from that required to obtain the CE Mark or FDA approval. As a result of the United Kingdom leaving the EU, since January 1, 2021, the regulatory framework and regimes for medical devices in the United Kingdom and the EU have diverged. In particular, a new UKCA Mark was introduced for medical devices placed on the Great Britain market (which includes England, Scotland and Wales), and Northern Ireland adopted a hybrid approach as a result of the divergence in accordance with the Northern Ireland Protocol. Of note, on June 30, 2023, the UK Government introduced legislation, confirming that, subject to certain conditions, general medical devices compliant with the MDD with a valid declaration and CE mark can be placed on the Great Britain market up until the sooner of the expiry of the CE certificate or June 30, 2028, and general medical devices compliant with the Medical Device Regulation (“MDR”) with a valid declaration and CE mark can be placed on the Great Britain market up until June 30, 2030.

Moreover, clinical studies or manufacturing processes conducted in one country may not be accepted by regulatory authorities in other countries. Approval by the FDA does not ensure approval by regulatory authorities in other countries, and approval by one or more international regulatory authorities does not ensure approval by regulatory authorities in other countries or by the FDA. However, a failure or delay in obtaining regulatory approval in one country may have a negative effect on the regulatory process in others. An international regulatory approval process may include all of the risks associated with obtaining FDA approval. We may not obtain regulatory approvals on a timely basis, if at all. We may not be able to submit for regulatory approvals or clearances and even if we submit we may not receive necessary approvals or clearances to commercialize our products in any market.

Before obtaining regulatory approval or clearance for the sale of a product, we may be required to conduct extensive preclinical studies and clinical trials to demonstrate the safety and efficacy of our planned products in human patients. Preclinical studies and clinical trials can be expensive, difficult to design and implement, can take many years to complete, and are uncertain as to outcome. A failure of one or more of our trials could occur at any stage of testing. In connection with the initiation of a clinical trial in the U.S., we filed an investigational device exemption (“IDE”) application, which was approved by the FDA in 2016. After we conducted that trial and submitted a premarket approval (“PMA”) application to the FDA, in 2020, the FDA requested additional data. Therefore, we withdrew the PMA application and in 2021 submitted an IDE application for our AUDACITY trial, which the FDA approved in 2021. We are currently conducting that clinical trial.

Numerous unforeseen events during, or as a result of, preclinical and clinical trials could occur, which would delay or prevent our ability to receive regulatory approval or commercialize the Allurion Balloon or any of our future products, including the following:

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If we or any future collaboration or distribution partner are required to conduct additional clinical trials or other testing of the Allurion Balloon or any future products, those clinical studies or other testing may not be successfully completed. If the results of these studies or tests are not positive, or are only modestly positive or if they raise safety concerns, we may:

Even if we obtain regulatory approvals or clearances in a jurisdiction, our products may be removed from the market due to a variety of factors, including adverse events, recalls, suspension of regulatory clearance to sell, or other factors. For example, on August 6, 2024, we announced that ANSM has suspended sales of the Allurion Balloon in France, and we are withdrawing the Allurion Balloon from the French market, pending implementation of a remediation plan to reduce certain risks associated with the advertising, follow-up program, and adverse events for the Allurion Balloon. There is no guarantee that we will be able to successfully implement a remediation plan to the satisfaction of ANSM and we could be delayed or prevented from resuming sales of the Allurion Balloon in France. A withdrawal from the market in one country may have a negative effect on the regulatory approval process and ability to sell and commercialize the Allurion Balloon in other countries, and on the market acceptance of the Allurion Balloon in other countries.

Although we launched the Allurion Balloon commercially in January 2016 and have placed over 150,000 units to date in various countries outside the U.S., we do not have as much post-market surveillance data as our competitors and may not have clearly identified all possible or actual risks of our products. Furthermore, if our clinical trials do not produce patient data that compares favorably with products that are already on the market, health care providers and patients may opt not to use our products, and our business would suffer.

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Our product development costs will also increase if we experience delays to our clinical trials or approvals.

Significant clinical trial delays also could allow our competitors to bring products to market before we do, which would impair our ability to commercialize our products and harm our business and results of operations.

The Allurion Balloon is not currently approved for commercial sale in the United States. Obtaining such approval is costly and time consuming, and we may not obtain the regulatory approval required to sell our products in the U.S.

Neither we, nor any future collaboration or distributor partner, can commercialize the Allurion Balloon in the U.S. without first obtaining regulatory approval from the FDA. Extensive preclinical and clinical testing is required to support FDA approval.

The FDA approval process is expensive and will take at least several years to complete, and FDA approval may never be obtained. We must also demonstrate that our manufacturing facilities, processes and controls are adequate to support FDA approval and that our clinical investigators complied with good clinical practices in the conduct of the Allurion Balloon clinical trial.

The FDA has substantial discretion in the approval process. Despite the time and expense exerted, failure may occur at any stage, and we could encounter problems that cause us to abandon or repeat clinical trials. The FDA can delay, limit, or deny approval of a product for many reasons, including, but not limited, to:

If the Allurion Balloon or our future products fail to demonstrate safety and efficacy in further clinical trials that may be required for FDA approval, or do not gain regulatory approval, our business and results of operations will be harmed.

Additionally, we expect that the initial FDA approval of the Allurion Balloon, if obtained, will be subject to a lengthy and expensive follow-up period, during which we must monitor patients enrolled in clinical studies and collect data on their safety outcomes. Even if FDA approval is obtained, the FDA has authority to impose post-market approval conditions, which can include (i) restrictions on the device’s sale, distribution, or use, (ii) continuing evaluation of the device’s safety and efficacy, (iii) additional warning/hazard labeling requirements, (iv) significant record management, (v) periodic reporting requirements, and (vi) any other requirements the FDA determines necessary to provide reasonable assurance of the device’s safety and effectiveness.

Completion of this follow-up trial, in a manner which results in data sufficient to maintain FDA approval, is subject to multiple risks, many of which are outside of our control. These include, but are not limited to, our ability to fund the ongoing trial from our operations or via additional fundraising; trial participants’ willingness and ability to return for follow-up trial visits; and maintenance of a suitable trial database over a long period of time. Even if completed and appropriately evaluated, the trial follow-up may reveal safety or other issues that impact the approved labeling, or may result in withdrawal of the Allurion Balloon from the marketplace in the U.S. or elsewhere.

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Even if clinical trials demonstrate acceptable safety and efficacy for the Allurion Balloon in some patient populations, the FDA or similar regulatory authorities outside the U.S. may not approve the marketing of the Allurion Balloon or may approve it with restrictions on the label, which could have a material adverse effect on our business, financial condition, results of operations and growth prospects.

It is possible the FDA or similar regulatory authorities may not consider the results of our clinical trials to be sufficient for approval of the Allurion Balloon for our desired indications for use. Moreover, even if the FDA or other regulatory authorities approve the marketing of the Allurion Balloon, the approval may include additional restrictions on the label that could make the Allurion Balloon less attractive to health care providers and patients compared to other products that may be approved for broader indications, which could limit potential sales of the Allurion Balloon.

If we fail to obtain FDA or other regulatory approval of the Allurion Balloon, or if the approval is narrower than what we seek, it could impair our ability to realize value from the Allurion Balloon, and therefore may have a material adverse effect on our business, financial condition, results of operations and growth prospects.

The results of preclinical studies and earlier clinical trials may not be predictive of the results of later preclinical studies and clinical trials, and the results of our current and future clinical trials may not satisfy the requirements of the FDA or other comparable regulatory authorities. If we cannot replicate the positive results from our preclinical studies or earlier clinical trials of the Allurion Balloon in our current or future clinical trials, we may be unable to successfully develop, obtain regulatory approval for and commercialize our current or future product candidates.

We will be required to demonstrate with sufficient valid scientific evidence through well-controlled clinical trials, that our product candidates are safe and effective for their intended uses before we can seek marketing approvals for their commercial sale. Positive results from our preclinical studies of the Allurion Balloon, and any positive results we may obtain from our early clinical trials of our current or future product candidates, may not necessarily be predictive of the results from subsequent preclinical studies and clinical trials. Similarly, even if we are able to complete our planned preclinical studies or any clinical trials of the Allurion Balloon according to our current development timeline, the positive results from such preclinical studies and clinical trials of the Allurion Balloon may not be replicated in subsequent preclinical studies or clinical trial results.

Additionally, several of our past, planned and ongoing clinical trials utilize an “open-label” trial design. An “open-label” clinical trial is one where both the patient and investigator know whether the patient is receiving the investigational product candidate. Open-label clinical trials are subject to various limitations that may exaggerate any therapeutic effect as patients in open-label clinical trials are aware when they are receiving treatment. Open-label clinical trials may be subject to a “patient bias” where patients perceive their symptoms to have improved merely due to their awareness of receiving an experimental treatment. In addition, open-label clinical trials may be subject to an “investigator bias” where those assessing and reviewing the physiological outcomes of the clinical trials are aware of which patients have received treatment and may interpret the information of the treated group more favorably given this knowledge. The results from an open-label trial may not be predictive of future clinical trial results with any of our product candidates for which we include an open-label clinical trial when studied in a controlled environment with a sham procedure.

Many companies in the pharmaceutical, biotechnology and medical device industries have suffered significant setbacks in late-stage clinical trials after achieving positive results in early-stage development, and we cannot be certain that we will not face similar setbacks. These setbacks have been caused by, among other things, preclinical findings made while clinical trials were underway or safety or efficacy observations made in preclinical studies and clinical trials, including previously unreported adverse events. Moreover, preclinical and clinical data are often susceptible to varying interpretations and analyses, and many companies that believed their product candidates performed satisfactorily in preclinical studies and clinical trials nonetheless failed to obtain approval from the FDA or a comparable foreign regulatory authority. If we fail to produce positive results in our

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planned preclinical studies or clinical trials of the Allurion Balloon, the development timeline and regulatory approval and commercialization prospects for the Allurion Balloon, and, correspondingly, our business and financial prospects, would be materially adversely affected. Thus, even if the results from our initial research and preclinical activities appear positive, we do not know whether subsequent clinical trials we may conduct will demonstrate adequate efficacy and safety to result in regulatory approval to market the Allurion Balloon.

Commercial success of the Allurion Balloon in the United States or elsewhere depends on our ability to accurately forecast customer demand and manufacture sufficient quantities of product that patients and health care providers request, and to manage inventory effectively. The failure to do so could have a material adverse effect on our business, financial condition, results of operations and growth prospects.

Manufacturing of the Allurion Balloon requires capital expenditures and a highly-skilled workforce. There is a significant lead time to build and certify a new manufacturing facility. Although we believe our current facilities will give us adequate manufacturing capacity to meet demand for at least the next two years, we have, in the past, been unable to fill all incoming orders to meet growing demand. If we obtain FDA approval, we intend to rely on our existing manufacturing facilities to supply products in the U.S. If demand increases faster than we expect, or if we are unable to produce the quantity of goods that we expect with our current facilities, we may not be able to grow revenue at an optimal rate. There may be other negative effects from supply shortages, including loss of our reputation in the marketplace and a negative impact on our relationships with our distributors, which could have a material adverse effect on our business, financial condition, results of operations, and growth prospects.

On the other hand, if demand for our products declines, or if market supply surpasses demand, we may not be able to reduce manufacturing expenses or overhead costs proportionately. We have invested significantly in our manufacturing capacity. If an increase in supply outpaces the increase in market demand, or if demand decreases, the resulting oversupply could adversely impact our sales and result in the underutilization of our manufacturing capacity, higher inventory carrying costs and associated working capital, changes in revenue mix, and/or price erosion, any of which would lower our margins and adversely impact our financial results, which could have a material adverse effect on our business, financial condition, results of operations, and growth prospects.

Our business depends on maintaining our brand, reputation, and ongoing demand for our products and services, and a significant reduction in sentiment or demand could affect our results of operations.

Our success depends on awareness and the reputation of our brand, which depends on factors such as the safety and quality of our products, our communication activities, including marketing and education efforts, customer acquisition and retention strategies, and our management of our heath care provider and patient experience. Maintaining, promoting and positioning our brand is important to expanding our customer base. This will depend largely on the success of our education and marketing efforts and our ability to provide a consistent, high-quality experience to health care providers and patients. If we do not successfully continue our education and marketing efforts, particularly to health care systems and large institutions, or if existing users decrease their level of engagement, our revenue, financial results and business may be significantly harmed.

A decrease in customer retention, growth or engagement with our products may have a material and adverse impact on our revenue, business, financial condition and results of operations. Any number of factors could negatively affect customer retention, growth and engagement, including:

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We may need to make substantial investments in the areas of education and marketing in order to maintain and enhance our brand and awareness of our products. Ineffective marketing, negative publicity, significant discounts by our competitors, product defects, serious adverse events and related liability litigation, failure to obtain regulatory approval or clearance for our products, counterfeit products, unfair labor practices and failure to protect our intellectual property rights are some of the potential threats to the strength of our business. We may need to make substantial expenditures to mitigate the impact of such threats.

We believe that maintaining and enhancing awareness of our products and brand in the countries in which we currently sell our products and in new countries where we have limited awareness or brand recognition is important to expanding our customer base. As such, our growth will depend on the further development and commercialization of our current products, and marketing authorization of our future products. If we are unable to increase awareness of our products or enhance the strength of our brand in the countries in which we currently sell our products and in new countries in a timely manner, then our growth strategy could be adversely affected.

Risks Related to our Business and Industry

The weight loss and obesity management industries are highly competitive. We also compete with companies that make weight loss drugs and other weight loss solutions outside the medical device industry, including compounded drugs. If our competitors are able to develop and market products that are safer, more effective, easier to use or more readily adopted by patients and health care providers, our commercial opportunities will be reduced or eliminated.

The weight loss and obesity management industries are highly competitive, subject to rapid change and significantly affected by new product introductions, results of clinical research, corporate combinations, actions by regulatory bodies, changes by public and private payers and other factors relating to our industry. We compete both with companies that offer medical devices as a weight loss therapy as well as companies that make weight loss drugs and other weight loss solutions outside the medical device industry. Because of the market opportunity and the high growth potential of the non-surgical device market for weight loss and obesity, in particular recent pharmaceutical therapies known as GLP-1s, competitors and potential competitors have historically dedicated, and will continue to dedicate, significant resources to aggressively develop and commercialize their products. Any one of these factors could reduce the demand for our devices or services or require substantial resources and expenditures for research, design and development to avoid technological or market obsolescence.

Outside the U.S., we compete with a variety of local and regional competitive intragastric balloon manufacturers including SC MedSil, Medicone and Spatz Laboratories. In the U.S., there are three manufacturers with an intragastric balloon approved by the FDA at this time: Boston Scientific Corporation, ReShape Lifesciences, Inc. and Spatz FGIA Inc. All of these balloons require endoscopy and anesthesia for placement and/or removal.

We also compete against the manufacturers of pharmaceuticals that are directed at treating weight loss, such as NovoNordisk A/S, Eli Lilly & Co., Roche Holding AG, GlaxoSmithKline plc, Arena Pharmaceuticals, Inc., VIVUS, Inc. and Orexigen Therapeutics, Inc.

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In November 2024, we launched AllurionMeds, a program which combines GLP-1 drugs with our AI-native platform. AllurionMeds will compete against other branded GLP-1 drugs and will face direct competition with those drugs and the existence of these products may limit the market size for AllurionMeds.

At any time, these or other competitors may introduce new or alternative products that compete directly or indirectly with our products and services. They may also develop and patent products and processes earlier than we can or obtain regulatory clearance or approvals before we are able to obtain required approvals, which could impair our ability to develop and commercialize similar products or services. If clinical outcomes of procedures performed with our competitors’ products are, or are perceived to be, superior to the outcomes of treatments performed with our products, sales of our products could be negatively affected and our business, results of operations and financial condition could suffer.

Our success will depend on our ability to enhance our current products and technologies and develop or acquire and market new products and technologies to keep pace with technological developments and evolving industry standards, while responding to changes in customer needs. A failure to adequately develop or acquire device enhancements or new devices that will address changing technologies and customer requirements adequately, or to introduce such devices on a timely basis, may have a material adverse effect on our business, financial condition and results of operations.

Many of our competitors, or their parent companies, have significantly greater financial and other resources than we do, as well as:

We might have insufficient financial resources to improve existing devices, advance technologies, develop new devices, and market them at competitive prices. Technological advances by one or more competitors or future entrants into the field may result in our current devices becoming non-competitive or obsolete, which may decrease revenues and profits and adversely affect our business and results of operations. Competition with these companies could result in significant price-cutting, reduced profit margins and loss of market share, any of which would harm our business, financial condition and results of operations. In addition, competitors with greater financial resources than ours could acquire other companies to gain enhanced name recognition and market share, as well as new technologies or products that could effectively compete with our existing and future products, which may cause our revenues to decline and harm our business. In addition, many of our competitors are well-established manufacturers with significant resources and may engage in aggressive marketing tactics. Competitors may also possess the ability to commercialize additional lines of products, bundle products or offer higher discounts and incentives to customers in order to gain a competitive advantage. If the prices of competing products are lowered as a result, we may not be able to compete effectively.

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Continued international expansion of our business will expose us to business, regulatory, political, operational, financial and economic risks associated with doing business internationally.

Our Allurion Program products are registered to be sold in over 50 countries, and we operate subsidiaries in the United States, France, the United Arab Emirates, the United Kingdom, Italy, Spain, Australia and Mexico. Our business strategy contemplates continued international expansion in key markets, including partnering with medical device distributors and introducing the Allurion Balloon and other products outside the U.S. The sale and shipment of our products internationally, as well as the purchase of components from international sources, subjects us to potential trade, export, import and customs, and economic sanctions regulations and laws.

Compliance with these regulations and laws is costly and exposes us to penalties for non-compliance. Any failure to comply with applicable legal and regulatory obligations could impact us in a variety of ways that include, but are not limited to, significant criminal, civil and administrative penalties, including imprisonment of individuals, fines and penalties, denial of export or import privileges, seizure of shipments, restrictions on certain business activities and exclusion or debarment from government contracting. Also, the failure to comply with applicable legal and regulatory obligations could result in the disruption of our shipping and sales activities.

In addition, several of the countries in which we sell our products or conduct our operations are, to some degree, subject to political, economic or social instability. Doing business in other countries outside the U.S. involves a number of other risks, including:

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Any of these risks, if encountered, could harm our future international expansion and operations and, consequently, have an adverse effect on our financial condition, results of operations and cash flows.

We depend on a limited number of single source suppliers to manufacture our components, sub-assemblies and materials, which makes us vulnerable to supply shortages and price fluctuations.

We rely on single source suppliers for some of the components, sub-assemblies and materials for our products. These components, sub-assemblies and materials are critical and, for certain items, there are relatively few alternative sources of supply. These single source suppliers may be unwilling or unable to supply the necessary materials and components reliably and at the levels we anticipate or that are required by the market. We also have two suppliers with which we do not maintain a formal contractual relationship. We typically have at least a six-month supply of the materials provided by each of these suppliers but we cannot guarantee that we could find an alternative before our inventory ran out and therefore the loss of these relationships could cause a substantial disruption to our business. We would also have little to no recourse if one of these two suppliers became unwilling or unable to continue to supply materials. While our suppliers have generally met our demand for their products and services on a timely basis in the past, we cannot guarantee that they will in the future be able to meet our demand for their products, either because of an increase in the level of such demand, acts of nature, the nature of our agreements with those suppliers or our relative importance to them as a customer. Our suppliers may decide in the future to discontinue or reduce the level of business they conduct with us.

We have not qualified or obtained necessary regulatory approvals for additional suppliers for some of these components, sub-assemblies and materials, but we do carry a significant inventory of these items ourselves. While we believe that alternative sources of supply or sterilization may be available, we cannot be certain whether they will be available if and when we need them, or that any alternative suppliers or providers would be able to provide the quantity and quality of components, materials and sterilization that we would need to manufacture and ship our products if our existing suppliers and providers were unable to satisfy our requirements. To utilize other sources, we would need to identify and qualify new providers to our quality standards and obtain any additional regulatory approvals required to change providers, which could result in manufacturing delays and increase our expenses.

Our dependence on third parties subjects us to a number of risks that could impact our ability to manufacture our products and harm our business, including:

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Although we require our third-party suppliers and providers to supply us with components and services that meet our specifications and other applicable legal and regulatory requirements in our agreements and contracts, and we perform incoming inspection, testing or other acceptance activities to ensure the components meet our requirements, there is a risk that these third parties will not always act consistently with our best interests, and may not always supply components or provide services that meet our requirements or in a timely manner.

Negative publicity, product defects and any resulting litigation concerning our products or our competitors’ products could harm our reputation and reduce demand for the Allurion Balloon, either of which could negatively impact our financial results.

The responses of potential patients, health care providers, the media, legislative and regulatory bodies and others to information about complications or alleged complications of our products, or products liability litigation against us or our competitors, could result in negative publicity and could materially reduce market acceptance of our products. These responses or any investigations and potential resulting negative publicity may have a material adverse effect on our business and reputation and negatively impact our financial condition, results of operations or the market price of our common stock. In addition, significant negative publicity could result in an increased number of product liability claims against us. On August 6, 2024, the ANSM has suspended sales of the Allurion Balloon in France due to adverse events, and we withdrew the Allurion Balloon from the French market, pending implementation of a remediation plan. There is no guarantee that we will be able to successfully implement a remediation plan to the satisfaction of ANSM and we could be delayed or prevented from resuming sales of the Allurion Balloon in France. A withdrawal from the market in in France and the risks identified by ANSM could negatively affect the market acceptance of the Allurion Balloon.

We depend on our senior management team and the loss of one or more key employees or an inability to attract and retain highly skilled employees could harm our business.

Our success largely depends upon the continued services of our executive management team and key employees and the loss of one or more of our executive officers or key employees could harm us and directly impact our financial results. Although we have entered into employment agreements with some of our executive officers and key employees, each of them may terminate their employment with us at any time. Changes in our executive management team resulting from the hiring or departure of executives could disrupt our business. For example, on November 7, 2024, Christopher Geberth, our former Chief Financial Officer, notified us of his decision to resign effective as of November 13, 2024, to pursue other interests. These types of changes in our management team could cause retention and morale concerns among current employees, as well as operational risks. In addition, our Chief Executive Officer, Shantanu Gaur, has been with us since inception and has been instrumental in building operational capabilities, raising capital and guiding product development and regulatory strategy. If Dr. Gaur was no longer working at our company, our industry credibility and operational capabilities would be harmed.

To execute our growth plan, we must attract and retain highly qualified personnel. Competition for skilled personnel is intense, especially for engineers with high levels of experience in designing and developing medical devices and for sales executives. We have, from time to time, experienced, and we expect to continue to

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experience, difficulty in hiring and retaining employees with appropriate qualifications. The loss of the services of our executive officers or other key employees could impede the achievement of our research, development and commercialization objectives and seriously harm our ability to successfully implement our business strategy. Furthermore, replacing executive officers and key employees may be difficult and may take an extended period of time because of the limited number of individuals in our industry with the breadth of skills and experience required to successfully develop, gain regulatory approval of and commercialize medical devices.

Many of the companies with which we compete for experienced personnel have greater resources than we have. If we hire employees from competitors or other companies, their former employers may attempt to assert that these employees or we have breached legal obligations, resulting in a diversion of our time and resources and, potentially, damages. In addition, job candidates and existing employees often consider the value of the stock awards they receive in connection with their employment. If the perceived value of our stock awards declines, either because we are a public company or otherwise, it may harm our ability to recruit and retain highly skilled employees. In addition, we invest significant time and expense in training our employees, which increases their value to competitors who may seek to recruit them. If we fail to attract new personnel or fail to retain and motivate our current personnel, our business and future growth prospects would be harmed.

We may acquire other businesses or form joint ventures or make investments in other companies or technologies in the future. If we are not successful in integrating these businesses, as well as identifying and controlling risks associated with the past operations of these businesses, we may incur significant costs, receive penalties or other sanctions from various regulatory agencies, and/or incur significant diversions of management time and attention.

We believe our business growth will be enhanced if we continually seek opportunities to enhance and broaden our product offerings. As part of our business strategy, we may pursue acquisitions or licenses of assets, or acquisitions of businesses. We also may pursue strategic alliances and joint ventures that leverage our core technology and industry experience to expand our product offerings or sales and distribution resources.

However, we may not be able to find suitable partners or acquisition candidates, and we may not be able to complete such transactions on favorable terms, if at all. If we make any acquisitions, we may not be able to integrate these acquisitions successfully into our existing business, and we could assume unknown or contingent liabilities. Any future acquisitions also could result in significant write-offs or the incurrence of debt and contingent liabilities, any of which could have an adverse effect on our financial condition, results of operations and cash flows. Integration of an acquired company may also disrupt ongoing operations and require management resources that would otherwise focus on developing our existing business. We may experience losses related to investments in other companies, which could have a negative effect on our results of operations.

We may not identify or complete these transactions in a timely manner, on a cost-effective basis, or at all, and we may not realize the anticipated benefits of any acquisition, license, strategic alliance or joint venture. To finance such a transaction, we may choose to issue our common stock as consideration, which would dilute the ownership of our stockholders. If the price of our common stock is low or volatile, we may not be able to acquire other companies or fund a joint venture project using our common stock as consideration. Alternatively, it may be necessary for us to raise additional funds for acquisitions through public or private financings, royalty or debt financings. Additional funds may not be available on terms that are favorable to us, or at all.

We do not know whether we will be able to successfully integrate any acquired business, product or technology. The success of any given acquisition may depend on our ability to retain any key employees related thereto, and we may not be successful at retaining or integrating such key personnel. Integrating any business, product or technology we acquire could be expensive and time-consuming, disrupt our ongoing business, impact our liquidity, and/or distract our management. If we are unable to integrate any acquired businesses, products or technologies effectively, our business may suffer. Whether as a result of unsuccessful integration, unanticipated

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costs, including those associated with assumed liabilities and indemnification obligations, negative accounting impact, or other factors, we may not realize the economic benefits we anticipate from acquisitions. In addition, any amortization or charges resulting from the costs of acquisitions could increase our expenses.

If changes in the economy and/or consumer spending, consumer preference and other trends reduce consumer demand for our products, our sales and profitability would suffer.

We are subject to the risks arising from adverse changes in general economic and market conditions. Certain elective procedures, including those for weight loss, are typically not covered by insurance. Adverse changes in the economy may cause consumers to reassess their spending choices, which could have an adverse effect on consumer spending, reduce the demand for these procedures, and therefore have an adverse effect on our revenues. Furthermore, consumer preferences and trends may shift due to a variety of factors, including changes in demographic and social trends, public health initiatives and product innovations, which may reduce consumer demand for our products.

Our overall performance depends, in part, on worldwide economic conditions. In recent quarters, we have observed increased economic uncertainty in the U.S. and abroad. Impacts of such economic weakness include:

These developments could lead to supply chain disruption, inflation, higher interest rates, and uncertainty about business continuity, which may adversely affect our business and our results of operations. As our customers react to global economic conditions and the potential for a global recession, we may see them reduce spending on our products and take additional precautionary measures to limit or delay expenditures and preserve capital and liquidity. Reductions in spending on our products, delays in purchasing decisions, failure to complete the Allurion Program, and inability to attract new customers, as well as pressure for extended billing terms or pricing discounts, would limit our ability to grow our business and negatively affect our operating results and financial condition.

Changes in our business and operations have placed, and may continue to place, significant demands on our management team and infrastructure. If we fail to manage these demands effectively, we may be unable to execute our business plan, maintain high levels of customer and patient satisfaction, or address competitive challenges adequately.

Our business, headcount, and operations have grown, in the United States and abroad, since our inception, and we anticipate operational changes in the future as we enhance our product development efforts and refine our marketing and distribution strategies. While we expect to continue to grow headcount and operations over the long-term, in January 2024 we announced a restructuring plan designed to more closely align our cost structure with near-term revenue expectations, improve our capital structure, and accelerate the path to profitability. The January 2024 plan anticipated a total reduction of approximately 30% of our global workforce as of December 2023. Additionally, on November 6, 2024, the Board approved a restructuring plan to reduce operating costs and better align its workforce with the needs of our business. The majority of the November 2024 restructuring plan is expected to be completed in the fourth quarter of 2024. Under the November 2024 restructuring plan, we anticipate reducing our workforce by approximately 113 roles (approximately 50% of the total workforce). We may be unable to manage effectively the changes to the business and potential disruption occasioned by such

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reductions. The implementation of our restructuring efforts, including the impact of a leaner organization, may result in delays in delivering our products and services, declines in customer and patient satisfaction, loss of customers, or difficulties in executing new strategies such as new sales and marketing strategies. We may experience employee attrition, decreased employee morale, and difficulty recruiting and retaining new employees in the future, all of which will require the time and attention of our management team. In addition, our ability to complete the restructuring plans and achieve the anticipated benefits from the plans within the expected time frame, or at all, are subject to successful execution of management’s estimates and assumptions and may vary materially from our expectations, including as a result of factors that are beyond our control. If we do not realize the expected benefits of the restructuring plans on a timely basis, or at all, our business, results of operations and financial condition could be adversely affected. Furthermore, following completion of the restructuring plans, our business may not be more efficient or flexible than prior to implementation. We may also incur additional costs not currently contemplated due to events that may occur as a result of, or that are associated with, the workforce reductions.

In the future, should demand for our products and services significantly increase, including as a result of regulatory approvals in the United States and elsewhere, we may need to increase the number of our employees and the scope of our operations, particularly in the areas of regulatory affairs and sales and marketing. We also intend, now and in the future, to continue to improve our operational, financial and management controls and reporting systems and procedures, which may require additional personnel and capital investments and will increase our costs. Such business growth could place a strain on our existing administrative and operational infrastructure, and we may not be able to make improvements to our personnel infrastructure in an efficient or timely manner, or at all. In addition, we may discover deficiencies in existing systems and controls.

Some new personnel likely would be operating in countries outside the jurisdiction of our corporate headquarters, which adds additional complexity, and may require us to expand our facilities. The physical expansion of our operations may lead to significant costs and may divert our management and business development resources. Managing personnel across a global enterprise requires expertise and resources and places a strain on our management, administrative and financial infrastructure. Our failure to effectively manage change and accomplish any of these tasks could delay the execution of our business plans or disrupt our operations, and prevent us from growing successfully. We may also be exposed or subject to additional unforeseen or undisclosed liabilities as well as increased levels of indebtedness.

We may be subject to substantial warranty or product liability claims or other litigation in the ordinary course of business that may adversely affect our business, financial condition and operating results.

We face an inherent risk of product liability exposure related to the sale of the Allurion Balloon and any products in clinical trials. The marketing, sale and use, misuse or off-label use of the Allurion Balloon and our other current and future products could lead to the filing of product liability claims against us if someone alleges that our products failed to perform as designed or caused significant adverse events in patients. We may also be subject to liability for a misunderstanding of, or inappropriate reliance upon, the information we provide. If we cannot successfully defend ourselves against claims that the Allurion Balloon or our other current or future products caused injuries, we may incur substantial liabilities. Regardless of merit or eventual outcome, liability claims may result in:

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We currently hold $5.0 million in product liability insurance coverage, which may not be adequate to cover all liabilities we may incur. Insurance coverage is increasingly expensive. We may not be able to maintain insurance coverage at a reasonable cost or in an amount adequate to satisfy any liability that may arise.

Any future collaboration agreements (including with respect to product distribution or commercialization) we may enter into with respect to our current or future products may place the development or commercialization of such products outside our control, or may otherwise be on terms unfavorable to us.

We may enter into additional collaboration agreements with third parties with respect to our current or future products, including for distribution or commercialization in or outside the U.S. Our likely collaborators for any distribution, marketing, licensing or other collaboration arrangements include large and mid-size medical device and diagnostic companies, regional and national medical device and diagnostic companies, and distribution or group purchasing organizations. We will have limited control over the amount and timing of resources that our collaborators dedicate to the development or commercialization of our products. Our ability to generate revenue from these arrangements will depend in part on our collaborators’ abilities to successfully perform the functions assigned to them in these arrangements.

We rely on third parties to conduct certain components of our clinical trials, and those third parties may not perform satisfactorily, including failing to meet deadlines for the completion of such trials, which could interfere with or delay our ability to get regulatory approval or commercialize our products.

We rely on third parties, such as contract research organizations, clinical data management organizations, medical institutions and clinical investigators, to perform various functions for our clinical trials. Our reliance on third parties for clinical development activities reduces our control over these activities but does not relieve us of our responsibilities. We remain responsible for ensuring that each of our clinical trials is conducted in accordance with the general investigational plan and protocols for the trial. Moreover, the International Council for Harmonization and the FDA require us to comply with standards, commonly referred to as good clinical practices, for conducting, recording and reporting the results of clinical trials to ensure that data and reported results are credible and accurate and that the rights, integrity and confidentiality of patients in clinical trials are protected. Furthermore, these third parties may also have relationships with other entities, some of which may be our competitors. If these third parties do not successfully carry out their contractual duties, meet expected deadlines or conduct our clinical trials in accordance with regulatory requirements or our stated protocols, we will not be able to obtain, or may be delayed in obtaining, regulatory approvals for our planned products and will not be able to, or may be delayed in our efforts to, successfully commercialize our planned products.

The failure of third parties to meet their contractual, regulatory, and other obligations could adversely affect our business.

We rely on suppliers, vendors, outsourcing partners, consultants, alliance partners and other third parties to research, develop, manufacture and commercialize our products and manage certain parts of our business. Using these third parties poses a number of risks, such as: (i) they may not perform to our standards or legal requirements; (ii) they may not produce reliable results; (iii) they may not perform in a timely manner; (iv) they may not maintain confidentiality of our proprietary information; (v) disputes may arise with respect to ownership of rights to technology developed with our partners; and (vi) disagreements could cause delays in, or termination of, the research, development or commercialization of our products or result in litigation or arbitration.

Moreover, some third parties are located in markets subject to political and social risk, corruption, infrastructure problems and natural disasters, in addition to country-specific privacy and data security risk given current legal and regulatory environments. Failure of third parties to meet their contractual, regulatory, and other obligations may materially affect our business.

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We have significant exposure to the economic and political situations in emerging market countries, and developments in these countries could materially impact our financial results, or our business more generally.

Many of the countries in which our products are sold are emerging markets. Our global growth strategy contemplates the expansion of our existing sales activities in Latin America, the Middle East, Africa and the Asia-Pacific region. Our exposure to emerging markets has increased in recent years, as have the number and importance of our distributor arrangements. Economic and political developments in the emerging markets, including economic crises, currency inflation, or political instability, have had in the past, and may have in the future, a material adverse effect on our financial condition and results of operations. Moreover, as these markets continue to grow, competitors may seek to enter these markets and existing market participants will likely try to aggressively protect or increase their market shares. Increased competition may result in price reductions, reduced margins and our inability to gain or hold market share, which could have an adverse effect on our financial condition and results of operations.

Increasing scrutiny and changing expectations from investors with respect to our environmental, social and governance practices may impose additional costs on us or expose us to reputational or other risks.

Investors have increased their emphasis on the environmental, social and governance (“ESG”) practices of companies across all industries, including the environmental impact of operations and human capital management. Certain stockholders use third-party benchmarks or scores to measure a company’s ESG practices and decide whether to invest in its common stock or engage with the company to require changes to its practices.

A failure to comply with investor expectations and standards, which are evolving and vary considerably, or the perception that we have not responded appropriately to the growing concern for ESG issues, could result in reputational harm to our business and could have an adverse effect on us.

Risks Related to Government Regulation

The regulatory approval process is expensive, time consuming and uncertain, and may prevent us from obtaining approvals for the commercialization of the Allurion Balloon or our planned products.

The research, testing, manufacturing, labeling, approval, selling, import, export, marketing and distribution of medical devices are subject to extensive regulation by the FDA and other regulatory authorities in the U.S. and other countries, where regulations differ from country to country. Our products are registered to be sold in over 50 countries, but we are not permitted to market our products in the U.S. until we receive the requisite approval or clearance from the FDA; we have not received such FDA approval to date. In addition, failure to comply with FDA and other applicable U.S. and foreign regulatory requirements may subject us to administrative or judicially imposed sanctions, including the following:

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Prior to receiving approval to commercialize any of our products in the U.S. or abroad, we may be required to demonstrate with substantial evidence from preclinical and well-controlled clinical trials, to the satisfaction of the FDA or other regulatory authorities abroad, that such products are safe and effective for their intended uses. Results from preclinical studies and clinical trials can be interpreted in different ways. Even if we believe the preclinical or clinical data for our products are promising, such data may not be sufficient to support approval by the FDA and other regulatory authorities. Administering any of our products to humans may produce undesirable side effects, which could interrupt, delay or cause suspension of clinical trials of our planned products and result in the FDA or other regulatory authorities denying approval of our products for any or all targeted indications.

Regulatory approval from the FDA is not guaranteed, and the approval process is expensive and may take several years. The FDA also has substantial discretion in the approval process. Despite the time and expense exerted, failure can occur at any stage, and we could encounter problems that cause us to abandon or repeat clinical trials, or perform additional preclinical studies and clinical trials. For example, we previously conducted a clinical trial on the Allurion Balloon and submitted a PMA application based on data from that trial. When the FDA requested additional data, we withdrew the PMA application and sought FDA approval to conduct our AUDACITY trial, which the FDA granted in 2021. We are currently conducting that clinical trial. The number of preclinical studies and clinical trials that will be required for FDA approval varies depending on the product, the indication that the product is designed to address and the regulations applicable to any particular product. The FDA can delay, limit or deny approval of a planned product for many reasons, including, but not limited to, the following:

If the Allurion Balloon or any of our other products fail to demonstrate safety and efficacy in preclinical studies and clinical trials or do not gain requisite regulatory approval, our business and results of operations will likely be harmed.

Inadequate funding for the FDA, the SEC and other government agencies, including from government shutdowns, or other disruptions to these agencies’ operations, could hinder their ability to hire and retain key leadership and other personnel, prevent new products and services from being developed or commercialized in a timely manner or otherwise prevent those agencies from performing normal business functions on which the operation of our business may rely, which could negatively impact our business.

The ability of the FDA to review and approve new products can be affected by a variety of factors, including government budget and funding levels, the ability to hire and retain key personnel and accept the payment of user fees, and statutory, regulatory and policy changes. Average review times at the agency have fluctuated in recent years as a result. In addition, government funding of the SEC and other government agencies on which our operations may rely, including those that fund research and development activities, is subject to the political process, which is inherently fluid and unpredictable.

Disruptions at the FDA and other agencies may also slow the time necessary for new product candidates to be reviewed and/or approved by necessary government agencies, which could adversely affect our business. If a prolonged government shutdown occurs, it could significantly impact the ability of the FDA to timely review and process our regulatory submissions, which could have a material adverse effect on our business. Further, future government shutdowns could impact our ability to access the public markets and obtain necessary capital in order to properly capitalize and continue our operations.

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Upon receipt of regulatory approval to market the Allurion Balloon in a given jurisdiction, we are (or will be) subject to ongoing regulatory obligations and continued regulatory review, which may result in significant additional expense and subject us to penalties if we fail to comply with applicable regulatory requirements.

When a regulatory approval is obtained, the approved product and its manufacturer are subject to continual review by regulatory authorities (including, if applicable, the FDA). Our non-U.S. regulatory approvals for the Allurion Balloon, as well as any future regulatory approval that we receive for the Allurion Balloon or for any of our other products, may be subject to limitations on the indicated uses for which the product may be marketed. Future approvals may contain requirements for potentially costly post-marketing follow-up trials to monitor the safety and efficacy of the approved product. In addition, we are subject to extensive and ongoing regulatory requirements by the FDA and other regulatory authorities with regard to the labeling, packaging, adverse event reporting, storage, advertising, promotion and recordkeeping for our products. In addition, we are required to comply with regulations regarding the manufacture of the Allurion Balloon, which include requirements related to quality control and quality assurance as well as the corresponding maintenance of records and documentation. Further, regulatory authorities must inspect these manufacturing facilities and determine they are in compliance with FDA good manufacturing practice requirements as set forth in the QSR before the products can be approved. These facilities are subject to continual review and periodic inspections by the FDA and other regulatory authorities for compliance with the QSR and similar regulations. If we or a third party discover previously unknown problems with a product, such as adverse events of unanticipated severity or frequency, or problems with the facility where the product is manufactured, a regulatory authority may impose restrictions on that product, the manufacturer or us, including requiring withdrawal of the product from the market or suspension of manufacturing.

If patients using our products experience adverse events or other undesirable side effects, regulatory authorities could withdraw or modify our regulatory approvals, which would adversely affect our reputation and commercial prospects and/or result in other significant negative consequences.

Undesirable side effects caused by the Allurion Balloon could cause us, the FDA or other applicable regulatory authorities to interrupt, delay or halt clinical trials, and could result in more restrictive labeling than originally required, cause the FDA or other regulatory authorities to subsequently withdraw or modify our PMA, if we obtain approval, or other regulatory approvals, or result in the delay or denial of regulatory approval by regulatory authorities. For example, we suspended sales of the Allurion Balloon in France following a request by the ANSM, due to, among other things, adverse events linked to gastrointestinal complications. In addition, in the 1980s and early 1990s, the FDA required post-market safety and efficacy data be collected on an earlier version of an intragastric balloon after patients suffered severe side effects and complications with the device, which ultimately resulted in the withdrawal of the PMA approval.

As of September 30, 2024, we had sold over 150,000 units of the Allurion Balloon in international markets. In our commercial experience, the serious adverse event (“SAE”) rate has been less than 0.2% and has been similar to the SAE profile reported in the literature.

If we are unable to demonstrate that any adverse events are not related to our product, the FDA or other regulatory authorities could order us to cease further development of, require more restrictive indications for use and/or additional warnings, precautions and/or contraindications in the labeling than originally required, or delay or deny approval of any of our products. Even if we are able to do so, such event(s) could affect patient recruitment or the ability of enrolled patients to complete the trial. Moreover, if we elect, or are required, to not initiate, delay, suspend or terminate any future clinical trial of any of our products, the commercial prospects of such product may be harmed and our ability to generate product revenues from our product may be delayed or eliminated. Any of these occurrences may harm our ability to develop other products, and may harm our business, financial condition and prospects significantly.

In addition, we or others may later identify undesirable side effects caused by the product (or any other similar product), resulting in potentially significant consequences, including:

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Any of these events could prevent us from achieving or maintaining market acceptance of the Allurion Balloon and could substantially increase the costs of commercializing our product and significantly impact our ability to successfully commercialize our product and generate product sales.

Health care reform measures could hinder or prevent our planned products’ commercial success.

In the U.S., there have been, and we expect there will continue to be, a number of legislative and regulatory changes to the health care system in ways that could affect our future revenue and future profitability and the future revenue and future profitability of our potential customers. Federal and state lawmakers regularly propose and, at times, enact legislation, that could result in significant changes to the health care system, some of which are intended to contain or reduce the costs of medical products and services. For example, one of the most significant health care reform measures in decades, ACA, was enacted in 2010. The ACA contains a number of provisions, including those governing enrollment in federal health care programs, reimbursement changes and fraud and abuse measures, all of which will impact existing government health care programs and will result in the development of new programs. For more information, see section entitled “Business - Government Regulation - Other U.S. Healthcare Laws - Coverage, Reimbursement and Healthcare Reform.”

There have been judicial and Congressional challenges to certain aspects of the ACA, as well as executive efforts to repeal or replace certain aspects of the ACA. The Tax Cuts and Jobs Act passed in 2017 included a provision that would repeal one of the primary pillars of the law, the ACA’s individual mandate penalty, which essentially assessed a monetary penalty or fine on certain individuals who fail to maintain qualifying health coverage for all or part of a year. The U.S. Congress may consider other legislation to repeal or replace elements of the ACA on a provision-by-provision basis. We cannot assure you that the ACA, as currently enacted or as amended in the future, will not adversely affect our business and financial results and we cannot predict how future federal or state legislative or administrative changes relating to health care reform will affect our business.

We cannot predict the impact that such actions against the ACA or other health care reform under the Biden administration will have on our business, and there is uncertainty as to what health care programs and regulations may be implemented or changed at the federal and/or state level in the U.S., or the effect of any future legislation or regulation. However, it is possible that such initiatives could have an adverse effect on our ability to obtain approval and/or successfully commercialize products in the U.S. in the future. For example, any changes that reduce, or impede the ability to obtain, reimbursement for the type of products we intend to commercialize in the U.S. (or our products more specifically, if approved) or reduce medical procedure volumes could adversely affect our business plan to introduce our products in the U.S.

In addition, other legislative changes have been proposed and adopted since the ACA was enacted. For example, the Budget Control Act of 2011 and subsequent legislation resulted in reductions to Medicare payments

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to providers of up to 2% per fiscal year to 2031 unless additional Congressional action is taken. In addition, the American Taxpayer Relief Act of 2012, among other things, further reduced Medicare payments to several providers, including hospitals, imaging centers, cancer centers and other treatment centers, and increased the statute of limitations period for the government to recover overpayments to providers from three to five years.

We cannot predict whether any additional legislative changes will affect our business.

There have been, and likely will continue to be, legislative and regulatory proposals at the federal and state levels directed at containing or lowering the cost of health care. The implementation of cost-containment measures or other healthcare reforms may prevent us from being able to generate revenue, attain profitability, or commercialize our products. Such reforms could have an adverse effect on anticipated revenue from our products and product candidates that we may successfully develop and for which we may obtain regulatory approval and may affect our overall financial condition and ability to develop future product candidates. We cannot predict the initiatives that may be adopted in the future or their full impact. The continuing efforts of the government, insurance companies, managed care organizations and other payors of health care services to contain or reduce costs of health care may adversely affect:

Our business could be adversely affected by a disruption to our contractual relationships for the provision of telehealth services.

The corporate practice of medicine doctrine prohibits non-licensed individuals from practicing medicine, including by employing physicians or other licensed professionals to provide clinical services, directing the clinical practice of physicians and clinical professionals, or holding an ownership interest in an entity that employs or contracts with physicians and other licensed professionals. Certain jurisdictions also prohibit licensed professionals from splitting professional fees with non-licensed professionals.

Through our Virtual Care Suite platform, our customers gain access to one or more licensed health care providers for telehealth consultations. We contract with third parties who maintain a separate clinical environment through which customers can access telehealth consultations, and we contract with additional groups that employ or contract with licensed health care providers to deliver telehealth services and consultations in the same clinical environment (collectively, the “Contracted Telehealth Groups”).

Our contractual arrangements are structured to comply with applicable law and to help ensure providers delivering telehealth services to our customers retain exclusive authority for the provision of telehealth services and exercise independent professional judgment in performing weight-loss consults, supervising nurse practitioners and physician assistants, and writing prescriptions for patients, as applicable. We cannot guarantee that government entities or courts would determine our approach is consistent with the corporate practice of medicine, fee splitting laws, or other laws governing the delivery of clinical services via telehealth. Furthermore, the foregoing laws, and the enforcement landscape, are subject to change based upon political, regulatory, and other influences. If our arrangements for the delivery of telehealth services on the platform are deemed to be unlawful, providers accessing our platform could be subject to penalties (e.g., fines or license suspension), which could discourage providers from entering arrangements with the Contracted Telehealth Groups and delivering services to our customers. Such enforcement actions could result in lawsuits by providers—against the Contracted Telehealth Groups or us—and could require us to restructure or terminate our arrangements with Contracted Telehealth Groups. These consequences, along with any other disputes that may arise with the Contracted Telehealth Groups related to the delivery of telehealth services to our customers, could impair our ability to offer telehealth services on our platform and materially affect our business, financial condition, and results of operations.

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Our and the Contracted Telehealth Groups’ activities are subject to laws governing the provision of telehealth services, which could be subject to changes that result in additional operational complexity or increase costs.

The Contracted Telehealth Groups and their providers are subject to laws governing the provision of telehealth services and the delivery of professional healthcare services more broadly. For example, some states limit the modality through which telehealth services are delivered, such as requiring synchronous (i.e. “live”) communication or curtailing asynchronous (or “store-and-forward”) communication for certain telehealth services (e.g., prescribing certain types of medications). Although our contractual arrangements with the Contracted Telehealth Groups are structured to comply with laws governing the provision of telehealth services, these laws are evolving at a rapid pace and are subject to changing political, regulatory, and other influences. Due to the rapidly evolving regulatory climate, we cannot assure that our contractual arrangements and telehealth activities, if challenged, will be deemed compliant, nor can we assure that a new or existing law will not be implemented, enforced, or changed, with little or no notice, in manner that requires us to modify our business model at a material expense.

Evolving government regulations and enforcement activities may require increased costs or adversely affect our results of operations.

Our contractual arrangements are structured to comply with all applicable material laws, but, due to the uncertain regulatory environment and enforcement discretion, government regulators or enforcement agencies may determine that we or our Contracted Telehealth Groups are in violation of their laws and regulations. If we must remedy such violations, we or the Contracted Telehealth Groups may be required to modify business operations and services in a manner that undermines our ability to retain or acquire new customers, or we—or our Contracted Telehealth Groups—may be subject to fines or other burdensome enforcement actions that may result in our termination of operations in certain jurisdictions. If so, our revenue may decline and our business, financial condition, and results of operations could be adversely affected.

Moreover, the laws applicable to our operations are subject to change or reinterpretation, and continued compliance may require us to change our practices at significant expense. Additional expenses may increase future overhead, which could have a material adverse effect on our results of operations. Additionally, modifications to our platform and the products, services and solutions we offer may require us to comply with additional laws and regulations, obtain necessary licenses or certifications, or materially alter our operations—any of which may require incurring significant expenses to ensure compliance. The failure to adequately comply with these future laws and regulations may delay or possibly prevent our products or services from being offered to customers, which could have a material adverse effect on our business, financial condition, and results of operations.

Our failure to comply with laws applicable to the use, disclosure, and processing of personally identifiable information could result in significant liability or reputational harm and, in turn, a material adverse effect on our customers, providers, and revenue.

Numerous state and federal laws and regulations govern the collection, dissemination, use, privacy, confidentiality, security, availability, integrity, and other processing of health information and other types of personal data or personally identifiable information (“PII”). We believe that, because of our current operations and the fact that we do not submit claims to third-party payors for reimbursement, we are not a covered entity or a business associate that acts on behalf of a covered entity under the Health Insurance Portability and Accountability Act (“HIPAA”). Nonetheless, numerous other federal, state, and foreign laws protect the confidentiality, privacy, availability, integrity and security of health information and other types of PII. These laws are subject to change or differing interpretations, and new laws regarding privacy, data protection, and information security may be enacted in the future. This complex and evolving landscape could expose us—and the Contracted Telehealth Groups and their providers—to additional expense, adverse publicity, and liability.

For example, the collection, use, storage, disclosure, transfer, or other processing of personal data (including health data) (i) regarding individuals in the EEA or the UK, and/or (ii) carried out in the context of the activities

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of our establishment in the EEA or the UK, is subject to the EU General Data Protection Regulation (“EU GDPR”), and the EU GDPR as it forms part of the laws of the United Kingdom post-Brexit (the “UK GDPR”, together with the EU GDPR referred to as “GDPR”), as well as other national data protection legislation in force in relevant Member States. The GDPR is wide-ranging in scope and imposes numerous requirements on companies that process personal data, including imposing special requirements in respect of the processing of health and other sensitive data, requiring consent of individuals in certain circumstances, additional disclosures to individuals, safeguards to protect the security and confidentiality of personal data, limiting retention periods for personal data, increasing requirements pertaining to health data and pseudonymized (i.e., key-coded) data, creating mandatory data breach notification requirements, and requiring that certain measures (including contractual requirements) are put in place when engaging third-party processors. The GDPR also imposes strict rules on the transfer of personal data to countries outside the EEA or the UK, including the United States, and permits data protection authorities to impose large penalties, including potential fines of up to €20 million (17.5 million GBP) or 4% of annual global revenue, whichever is greater. The GDPR further provides individuals with various rights in respect of their personal data, including rights of access, erasure, portability, rectification, restriction and objection. The GDPR also confers a private right of action on data subjects and consumer associations to lodge complaints with supervisory authorities, seek judicial remedies, and obtain compensation for damages resulting from violations of the GDPR.

While we have implemented data privacy and security measures, as well as consent practices, in an effort to comply with applicable laws and regulations relating to data privacy and security, some health information and other PII or confidential information is transmitted to us by third parties, who may not implement adequate security and privacy measures, and it is possible that laws, rules, and regulations relating to privacy, data protection, or information security may be interpreted and applied in a manner that is inconsistent with our practices or those of third parties who transmit health information and other PII or confidential information to us. A finding of noncompliance could result in penalties, orders requiring modification to our data privacy and security practices, or criminal charges, which could adversely affect our business. Moreover, changes in these laws could result in substantial expenses or require us to materially change our operations in a manner adverse to our business.

We maintain a privacy policy available to customers that describes how we handle health information or other PII. Statements in our privacy policy could be subject to claims of deceptive practices by federal or state regulatory authorities or private parties, which could lead to significant legal expenses, divert our management’s attention from our operations, and seriously harm our business and our financial results. Furthermore, the costs of compliance with, and other burdens imposed by, the laws, regulations and policies that are applicable to us may limit customers’ use and adoption of, and reduce the overall demand for, our platform. Any of the foregoing consequences could have a material adverse impact on our business and our financial results.

Our business could be affected negatively by increased public scrutiny, regulatory enforcement, or changes in law with respect to online privacy and security.

Practices regarding the registration, collection, processing, storage, sharing, disclosure, use and security of personal and other information by companies offering online services like our platform have recently come under increased public scrutiny and regulatory enforcement. The regulatory landscape applicable to internet privacy and security is evolving rapidly and requires careful monitoring to remain in compliance.

For example, comprehensive state privacy laws, such as the California Consumer Privacy Act (the “CCPA”), which became effective on January 1, 2020, and which, as of January 1, 2023, was modified significantly by the California Privacy Rights Act require, among other things, requires covered companies to provide new disclosures to California consumers and afford such consumers new abilities to opt-out of certain sales of personal information. Although there are limited exemptions for clinical trial data under the CCPA, the CCPA and other similar laws could impact our business activities depending on how such laws are interpreted and the types of personal information that we handle.

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Similar legislation has been proposed or adopted in many other states. Such proposed legislation, if enacted, may add additional complexity, variation in requirements, restrictions and potential legal risk, require additional investment of resources in compliance programs, impact strategies and the availability of previously useful data and could result in increased compliance costs and/or changes in business practices and policies. The existence of comprehensive privacy laws in different states in the country would make our compliance obligations more complex and costly and may increase the likelihood that we may be subject to enforcement actions or otherwise incur liability for noncompliance. There are also states that are specifically regulating health information. For example, Washington state recently passed a health privacy law that, as of June 30, 2024, regulates the collection and sharing of health information. This law also has a private right of action, which further increases the relevant compliance risk collecting the health information of Washington residents. Connecticut and Nevada have also passed similar laws regulating consumer health data. In addition, other states have proposed and/or passed legislation that regulates the privacy and/or security of certain specific types of information. For example, a small number of states have passed laws that regulate biometric data specifically. These various privacy and security laws may impact our business activities, relationships with business partners and ultimately the marketing and distribution of our products. State laws are changing rapidly and there is discussion in the U.S. Congress of a new comprehensive federal data privacy law to which we may likely become subject, if enacted. Aspects of these new and emerging state privacy laws and regulations, as well as their interpretation and enforcement, are dynamic and evolving. These laws and regulations each require particular assessment for compliance, and we may be required to modify our practices in an effort to comply with them, which may impact demand for our offerings.

Although the EU GDPR and the UK GDPR currently impose substantially similar obligations, the UK government has announced plans to reform the data protection legal framework in the UK in its Data Use and Access Bill. This lack of clarity on future UK laws and regulations and their interaction with EU laws and regulations could add legal risk, uncertainty, complexity and cost to our handling of European personal information and our privacy and data security compliance programs and could require us to implement different compliance measures for the UK and the EU.

If there is a significant change to applicable laws, regulations, or industry standards or practices regarding the storage, use, or disclosure of data our customers or providers share with us, or regarding the manner in which the express or implied consent of customers or providers for such collection, analysis and disclosure is obtained., we may be required to modify the design of our websites, mobile applications, solutions, features, or our privacy policies, and we may be limited in our ability to develop new offerings, functionalities or features.

Our AllurionMeds program offers patients access to compounded semaglutide. Compounded drugs, including compounded semaglutide, have been subject to increased scrutiny by FDA, state governmental agencies, and other third-parties, and may expose us to a variety of risks that could result in an adverse impact on our business or reputation.

We have developed and market a program, AllurionMeds, which offers patients access to compounded injectable semaglutide, a GLP-1 prescription medication, that is prescribed by the patient’s practitioner. The compounded semaglutide is prepared by a third-party 503B outsourcing facility (“Semaglutide Compounding Facility”) and dispensed via a state-licensed pharmacy. 503B outsourcing facilities are regulated by the FDA and are required to comply with certain FDA requirements, including current good manufacturing practice requirements, product labeling requirements, restrictions on compounding drugs that are essentially a copy of an FDA-approved drug, and restrictions on compounding from bulk drug substances. 503B outsourcing facilities are also subject to analogous state laws and regulations. 503B outsourcing facilities have experienced both facility and product quality issues and have been subject to increased scrutiny by the FDA and state governmental agencies. If the Semaglutide Compounding Facility or any of its compounded products do not comply with applicable regulatory requirements or if there are quality issues with compounded semaglutide, FDA or state governmental agencies could pursue regulatory or enforcement action against the Semaglutide Compounding Facility, which could interrupt or halt the facility’s operations. Any such action could impact the ability of the Semaglutide Compounding Facility to supply compounded semaglutide, which could have an adverse effect on

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our business. Additionally, if we are found to have manufactured, distributed, marketed, sold, or labeled any products in violation of applicable regulatory requirements, we may face significant penalties which may result in a material adverse effect on our business, financial condition, and results of operations. Certain 503B outsourcing facilities have been subject to negative media coverage, governmental inquiries and actions, and litigation in recent years, including with respect to compounded GLP-1s. For example, manufacturers of branded GLP-1 medications have brought lawsuits against 503B outsourcing facilities offering compounded GLP-1s as well as the prescribers of such medications, including telehealth providers. Any negative media coverage, governmental inquiries or actions, or litigation against us or the Semaglutide Compounding Facility could have an adverse effect on our reputation or business.

503B outsourcing facilities are permitted to compound from bulk drug substances if the product appears on FDA’s drug shortage list. Semaglutide injection has been listed on the FDA drug shortage list since August 2022. If the shortage is resolved and semaglutide is removed from the FDA drug shortage list, 503B outsourcing facilities, including the Semaglutide Compounding Facility, will be restricted in their ability to compound semaglutide. Additionally, on October 22, 2024, Novo Nordisk submitted a nomination for semaglutide to be included on FDA’s list of drug products that present demonstrable difficulties for compounding. If added to this list, 503B outsourcing facilities would be prohibited from producing compounded semaglutide, even if semaglutide is on the drug shortage list. If any of these events occurs, we cannot guarantee that we will be able to continue offering these products in the same manner, to the same extent, or at all, due to a variety of factors outside our control, including supply chain, intellectual property, regulatory and resource allocation matters. If our ability to offer these products is constrained in the future, supply may be limited, the price of these offerings may increase significantly, which could decrease new customer demand, cause existing customers to cancel their subscriptions, and reduce our revenues and/or gross profit, which could harm our brand, reputation, and results of operations.

If we fail to comply with health care regulations, we could face substantial penalties and our business, operations and financial condition could be adversely affected.

Even though we do not and will not control referrals of health care services or bill directly to Medicare, Medicaid or other third-party payors, certain federal and state health care laws and regulations pertaining to fraud and abuse and patients’ rights may be applicable to our business. If we are approved by the FDA to market our products in the U.S., we could be subject to health care fraud and abuse, transparency, and patient privacy regulation by both the federal government and the states in which we conduct our business. For more information, see section entitled “Business - Government Regulation - Other U.S. Healthcare Laws.”

Similar regulations would also apply to our business in countries where we have direct sales operations where there are different regulations at European and national levels. There is a high degree of complication in complying with the different levels of regulation and the singular differences in the different countries and markets.

If our operations are found to be in violation of any of the laws described above or any other governmental regulations that apply to us, we may be subject to penalties, including civil, criminal and administrative penalties, damages, fines, disgorgement, individual imprisonment, exclusion from participation in Medicare, Medicaid and other federal health care programs, additional reporting and government oversight, if we become subject to a corporate integrity agreement or similar agreement to resolve allegations of non-compliance with these laws and the curtailment or restructuring of our operations. Any such penalties or curtailment or restructuring of our operations could adversely affect our ability to operate our business and our financial results. Any action against us for violation of these laws, even if we successfully defend against it, could cause us to incur significant legal expenses and divert our management’s attention from the operation of our business. Moreover, achieving and sustaining compliance with applicable federal, state or international privacy, security and fraud laws may prove costly.

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We have obtained the authorization to distribute our products in regions/countries through the certification of our quality system by the corresponding regulatory entities. Failing to demonstrate that our quality system is in place and consistently and systematically ensures compliance with regulations from such regions/countries might imply losing the certifications and as such, the rights to freely distribute the products which would adversely impact our revenue and reputation.

We have not historically maintained a compliance policy relating to U.S. or foreign economic sanctions, export controls or anti-corruption laws and regulations, and failure to comply with these regimes creates the potential for significant liabilities, penalties and reputational harm.

We have not historically maintained a compliance policy relating to U.S. economic sanctions, export controls or anti-corruption laws and regulations. Failure to comply with such laws and regulations creates the potential for significant liabilities, penalties and reputational harm. We are subject to a number of laws and regulations governing commercial activities with and payments and contributions to third parties, including restrictions imposed by the FCPA, as well as trade sanctions and export control laws administered by the U.S. Department of the Treasury’s Office of Foreign Assets Control (“OFAC”), the U.S. Department of Commerce and the U.S. Department of State.

The FCPA, among other things, prohibits bribery of foreign governments and their officials and political parties and requires U.S. public companies to keep books and records that accurately and fairly reflect those companies’ transactions. OFAC, the U.S. Department of Commerce and the U.S. Department of State administer and enforce various export control laws and regulations and economic sanctions based on U.S. foreign policy and national security goals against targeted foreign states, organizations and individuals.

Similar laws in non-U.S. jurisdictions, such as UK sanctions, EU sanctions or the U.K. Bribery Act, as well as other applicable anti-bribery, anti-corruption, anti-money laundering, sanctions or export control laws, may also impose stricter or more onerous requirements than U.S. economic sanctions, export controls, and anti-corruption laws and regulations, and implementing compliance measures may disrupt our business or cause us to incur significantly more costs. Different laws may also contain conflicting provisions, making compliance more difficult. If we fail to comply with these laws and regulations, we could be exposed to claims for damages, civil or criminal financial penalties, reputational harm, incarceration of our employees, restrictions on our operations and other liabilities, which could materially and adversely affect our business, results of operations and financial condition.

While we have implemented policies and procedures designed to promote compliance by us and our personnel with the FCPA and other anti-corruption laws, they may not be effective in all instances to prevent violations. Any determination that we have violated the FCPA or other applicable anti-corruption, sanctions or export control laws could subject us to, among other things, civil and criminal penalties, material fines, profit disgorgement, injunctions on future conduct, securities litigation and a general loss of investor confidence, any one of which could adversely affect our business, financial condition and results of operations.

Adverse developments affecting the financial services industry, such as actual events or concerns involving liquidity, defaults, or non-performance by financial institutions or transactional counterparties, could adversely affect our current and projected business operations and financial condition and results of operations.

Actual events involving limited liquidity, defaults, non-performance or other adverse developments that affect financial institutions, transactional counterparties or other companies in the financial services industry or the financial services industry generally, or concerns or rumors about any events of these kinds or other similar risks, have in the past and may in the future lead to market-wide liquidity problems. On March 10, March 12, and May 1, 2023, the Federal Deposit Insurance Corporation took control and was appointed receiver of Silicon Valley Bank (“SVB”), Signature Bank, and First Republic Bank, respectively, after each bank was unable to

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continue its operations. We are unable to predict the extent or nature of the impacts of the failures of SVB, Signature Bank and First Republic Bank and related circumstances at this time. Similarly, we cannot predict the impact that the high market volatility and instability of the banking sector more broadly could have on economic activity and our business in particular. The failure of other banks and financial institutions and measures taken, or not taken, by governments, businesses and other organizations in response to these events could adversely impact our business, financial condition and results of operations.

Although we assess our banking relationships as we believe necessary or appropriate, our access to funding sources and other credit arrangements in amounts adequate to finance or capitalize our current and projected future business operations could be significantly impaired by factors that affect us, the financial institutions with which we have credit agreements or arrangements directly, or the financial services industry or economy in general. These factors could include, among others, events such as liquidity constraints or failures, the ability to perform obligations under various types of financial, credit or liquidity agreements or arrangements, disruptions or instability in the financial services industry or financial markets, or concerns or negative expectations about the prospects for companies in the financial services industry. These factors could involve financial institutions or financial services industry companies with which we have financial or business relationships, but could also include factors involving financial markets or the financial services industry generally.

In addition, investor concerns regarding the U.S. or international financial systems could result in less favorable commercial financing terms, including higher interest rates or costs and tighter financial and operating covenants, or systemic limitations on access to credit and liquidity sources, thereby making it more difficult for us to acquire financing on acceptable terms or at all. Any decline in available funding or access to our cash and liquidity resources could, among other risks, adversely impact our ability to meet our operating expenses, financial obligations or fulfill our other obligations, result in breaches of our financial and/or contractual obligations or result in violations of federal or state wage and hour laws. Any of these impacts, or any other impacts resulting from the factors described above or other related or similar factors not described above, could have material adverse impacts on our liquidity and our current and/or projected business operations and financial condition and results of operations.

We may be affected by regulatory responses to climate-related issues.

The Biden Administration has made climate change and the limitation of greenhouse gas (“GHG”) emissions one of its primary objectives. Several states and other geographic regions in the United States have also adopted legislation and regulations to reduce emissions of GHGs.

On March 6, 2024, the SEC finalized new rules for public companies that will require extensive climate-related disclosures and significant analysis of the impact of climate-related issues on our business strategy, results of operations, and financial condition (the “SEC Climate Disclosure Rules”). The new rules will require us to disclose our material climate-related risks and opportunities, GHG emissions inventory, climate-related targets and goals, and financial impacts of physical and transition risks. As a result of the SEC Climate Disclosure Rules, our legal, accounting, and other compliance expenses may increase significantly, and compliance efforts may divert management time and attention. We may also be exposed to legal or regulatory action or claims as a result of these new regulations. All of these risks could have a material adverse effect on our business, financial position, and/or stock price.

Risks Related to Intellectual Property

The medical device industry is characterized by patent litigation and we could become subject to adversarial proceedings or litigation that could be costly, result in the diversion of management’s time and efforts, result in a loss of our intellectual property, require us to pay damages or prevent us from marketing our existing or future products.

Patent litigation and other adversarial proceedings are prevalent in the medical device and diagnostic sectors. Our commercial success depends in part upon our ability and that of our distributors, contract

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manufacturers, and suppliers to manufacture, market, and sell our planned products, and to use our proprietary technologies without infringing, misappropriating or otherwise violating the proprietary rights or intellectual property of third parties. We have been, and in the future may become, party to, or be threatened with, adversarial proceedings or litigation regarding intellectual property rights with respect to our products and technology. Third parties may assert infringement claims against us based on existing or future intellectual property rights, or may assert that our patents are invalid or unenforceable. Because patent applications can take many years to issue, there may be currently pending patent applications which may later result in issued patents that we may be accused of infringing. In addition, third parties may obtain patents in the future and claim that use of our technologies infringes upon these patents. Accordingly, third parties may assert infringement claims against us based on intellectual property rights that exist now or arise in the future. The outcome of intellectual property litigation is subject to uncertainties that cannot be adequately quantified in advance. Medical device and diagnostic industries have produced a significant number of patents and it may not always be clear to industry participants, including us, which patents cover various types of products or methods of use or manufacture. The scope of protection afforded by a patent is subject to interpretation by the courts and administrative agencies, and the interpretation is not always uniform. If we were sued for patent infringement, we would need to demonstrate that the relevant product or methods of using the product either do not infringe the patent claims of the relevant patent or that the patent claims are invalid or unenforceable and we may not be able to do this. Proving invalidity is difficult. For example, in the U.S., proving invalidity requires a showing of clear and convincing evidence to overcome the presumption of validity enjoyed by issued patents. Even if we are successful in these proceedings, we may incur substantial costs and the time and attention of our management and scientific personnel could be diverted in pursuing these proceedings, which could significantly harm our business and operating results. In addition, parties making claims against us may be able to sustain the costs of complex patent litigation more effectively than we can because they have substantially greater resources, and we may not have sufficient resources to bring these actions to a successful conclusion.

If we are found to infringe a third party’s intellectual property rights, we could be required to obtain a license from such third-party to continue developing and marketing our products and technology. We may also elect to enter into such a license in order to settle pending or threatened litigation. However, we may not be able to obtain any required license on commercially reasonable terms, or at all. Even if we were able to obtain a license, it could be non-exclusive, thereby giving our competitors access to the same technologies licensed to us, and could require us to pay significant royalties and other fees. We could be forced, including by court order, to cease commercializing the infringing technology or product if we are found to infringe a third party’s intellectual property rights. In addition, we could be found liable for monetary damages. A finding of infringement could prevent us from commercializing our planned products in commercially important territories, or force us to cease some of our business operations, which could harm our business. Many of our employees were previously employed at, and many of our current advisors and consultants are employed by, universities or other biotechnology, medical device or pharmaceutical companies, including our competitors or potential competitors. Although we instruct our employees, advisors and consultants not to, and otherwise endeavor to ensure that they do not, use or disclose the proprietary information or know-how of others in their work for us, we may be subject to claims that we, or these service providers, have used or disclosed intellectual property, including trade secrets or other proprietary information, of any such service providers’ current or former employer or other third party. These and other claims that we have misappropriated the confidential information or trade secrets of third parties can have a similar negative impact on our business to the infringement claims discussed above.

Even if we are successful in defending against intellectual property claims, litigation or other legal proceedings relating to such claims may cause us to incur significant expenses, and could distract our technical and management personnel from their normal responsibilities. In addition, there could be public announcements of the results of hearings, motions or other interim proceedings or developments and if securities analysts or investors perceive these results to be negative, it could have a substantial adverse effect on the price of our common stock. Such litigation or proceedings could substantially increase our operating losses and reduce our resources available for development activities. We may not have sufficient financial or other resources to adequately conduct such litigation or proceedings. Some of our competitors may be able to sustain the costs of

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such litigation or proceedings more effectively than we can because of their substantially greater financial resources. Uncertainties resulting from the initiation and continuation of litigation or other intellectual property related proceedings could have a material adverse effect on our ability to compete in the marketplace.

Changes in U.S. patent law could diminish the value of patents in general, thereby impairing our ability to protect our products.

The U.S. Supreme Court has ruled on several patent cases in recent years, either narrowing the scope of patent protection available in certain circumstances or weakening the rights of patent owners in certain situations. In addition to increasing uncertainty with regard to our ability to obtain future patents, this combination of events has created uncertainty with respect to the value of patents, once obtained. Depending on decisions by the U.S. Congress, the federal courts and the U.S. Patent and Trademark Office (“USPTO”), the laws and regulations governing patents could change in unpredictable ways that would weaken our ability to obtain new patents or to enforce our existing patents or future patents.

If we fail to comply with our obligations in our intellectual property agreements, we could lose intellectual property rights that are important to our business.

We are a party, and expect to become party in the future, to certain intellectual property agreements that impose various obligations on us. If we fail to comply with these obligations, any licensor may have the right to terminate such agreements, in which event we may not be able to develop and market any product that is covered by such agreements. Termination of such agreements, or reduction or elimination of our rights under such agreements, may result in our having to negotiate new or reinstated arrangements on less favorable terms, or our not having sufficient intellectual property rights to operate our business. The occurrence of such events could harm our business and financial condition.

The risks described elsewhere in this prospectus pertaining to our intellectual property rights also apply to any intellectual property rights that we may license, and any failure by us or any future licensor to obtain, maintain, defend and enforce these rights could have a material adverse effect on our business.

If we are not able to obtain and maintain intellectual property protection for our products and technologies, or if the scope of our patents is not sufficiently broad, or our patents are invalidated, we may not be able to effectively maintain our market leading technology position.

As of November 29, 2024, we owned or had rights to 19 issued and five pending patents in the United States related to various aspects of the Allurion Balloon such as a swallowable, self-deflating and naturally passing gastric balloon, improvements to the fill and release valves therein, methods for deploying and releasing a gastric balloon within the body, and next generation fill and release valves. In addition, we had 39 issued and five patents pending outside of the United States. Our success depends in large part on our ability to obtain and maintain patent and other intellectual property protection in the U.S. and in other countries with respect to our proprietary technology and products.

The patent position of medical device and diagnostic companies generally is highly uncertain and involves complex legal and factual questions which are dependent upon the current legal and intellectual property context, extant legal precedent and interpretations of the law by individuals, and for which certain legal principles remain unresolved. In recent years, patent rights have been the subject of significant litigation. As a result, the issuance, scope, validity, enforceability and commercial value of the patent rights we rely on are highly uncertain.

Pending patent applications cannot be enforced against third parties practicing the technology claimed in such applications unless and until a patent issues from such applications. Pending and future patent applications may not result in patents being issued at all, may not result in patents being issued in a manner which protect our technology or products, or may not result in patents being issued which effectively prevent others from

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commercializing competitive technologies and products. Assuming the other requirements for patentability are met, currently, the first to file a patent application is generally entitled to the patent. However, prior to March 16, 2013, in the U.S., the first to invent was entitled to the patent. Publications of discoveries in the scientific literature often lag behind the actual discoveries, and patent applications in the U.S. and other jurisdictions are typically not published until 18 months after filing, or in some cases not at all. Therefore, we cannot be certain that we were the first to make the inventions claimed in our patents or pending patent applications, or that we were the first to file for patent protection of such inventions. If third parties have filed prior patent applications on inventions claimed in our patents or applications that were filed on or before March 15, 2013, an interference proceeding in the U.S. can be initiated by such third parties to determine who was the first to invent any of the subject matter covered by the patent claims of our applications. If third parties have filed such prior applications after March 15, 2013, a derivation proceeding in the U.S. can be initiated by such third parties to determine whether our invention was derived from theirs. The determination that a patent application or patent claim meets all the requirements for patentability is a subjective determination based on the application of law and jurisprudence. The ultimate determination by the USPTO, or by a court or other trier of fact in the U.S., or corresponding foreign national patent offices or courts, on whether a claim meets all requirements of patentability cannot be assured. Accordingly, we cannot predict the breadth of claims that may be allowed or enforced in our owned (jointly or fully) or licensed-in patents or patent applications.

We cannot provide assurances that any invention that is the subject of our patent applications, whether licensed-in or owned jointly or completely by us, will be found to be patentable, including over our own prior art publications or patent literature, or any such that application will result in an issued patent. We cannot make assurances as to the scope of any claims that may issue from our pending and future patent applications or to the outcome of any proceedings by any potential third parties that could challenge the patentability, validity or enforceability of our patents and patent applications in the U.S. or foreign jurisdictions. Any such challenge, if successful, could limit patent protection for our technology and products and/or materially harm our business.

Even if the patent applications we rely on issue as patents, they may not issue in a form that will provide us with any meaningful protection, prevent competitors from competing with us or otherwise provide us with any competitive advantage. Our competitors may be able to circumvent our patents by developing similar or alternative technologies or products in a non-infringing manner. The issuance of a patent is not conclusive as to its inventorship, scope, validity or enforceability, and the patents we rely on may be challenged in the courts or patent offices in the U.S. and abroad. There is no assurance that all the potentially relevant prior art relating to our patents and patent applications has been found. If such prior art exists, it may be used to invalidate a patent, or may prevent a patent from issuing from a pending patent application. For example, such patent filings may be subject to a third-party submission of prior art to the USPTO or to other patent offices around the world.

Alternately or additionally, we may become involved in post-grant review procedures, oppositions, derivation proceedings, ex parte re-examinations, inter partes review, supplemental examinations, or interference proceedings or challenges in district court, in the U.S. or in various foreign patent offices, including both national and regional, challenging patents or patent applications in which we have rights, including patents on which we rely to protect our business. Patents that may be issued or in-licensed may be challenged, invalidated, modified, revoked, circumvented, found to be unenforceable or otherwise may not provide any competitive advantage. An adverse determination in any such challenge may result in loss of the patent or in patent application or patent claims being narrowed, invalidated or held unenforceable, in whole or in part, or in denial of the patent application or loss or reduction of the scope of one or more claims of the patent or patent application, any of which could limit our ability to stop or prevent us from stopping others from using or commercializing similar or identical technology and products, or limit the duration of the patent protection of our technology and products.

As another example, a European Unified Patent Court (“UPC”) has entered into force on June 1, 2023. The UPC is a common patent court to hear patent infringement and revocation proceedings effective for member states of the European Union (“EU”). This could enable third parties to seek revocation of any of our European patents or licensed-in European patents in a single proceeding at the UPC rather than through multiple proceedings in each of

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the jurisdictions in which any such European patent is validated. Any such revocation and loss of patent protection could have a material adverse impact on our business and our ability to commercialize or license our technology and products. Moreover, the controlling laws and regulations of the UPC will develop over time, and may adversely affect our ability to enforce our European patents, whether owned or licensed-in, or defend the validity thereof. We, or any future licensor, may decide to opt out our European patents and patent applications from the UPC. If certain formalities and requirements are not met, however, these European patents and patent applications could be challenged for non-compliance and brought under the jurisdiction of the UPC. We cannot be certain that our owned (jointly or fully) or licensed-in European patents or European patent applications will avoid falling under the jurisdiction of the UPC, if we, or any future licensor, decide to opt out of the UPC. Our competitors, who may have greater resources and may have made significant investments in competing technologies, may seek or may have already obtained patents that will limit, interfere with or eliminate our ability to make, use, and sell our technologies and products. Given the amount of time required for the development, testing and regulatory review of new planned products, patents protecting such products might expire before or shortly after such products are commercialized. As a result, our patent portfolio may not provide us with sufficient rights to exclude others from commercializing products similar or identical to ours or otherwise provide us with a competitive advantage.

Changes in either the patent laws or interpretation of the patent laws in the U.S. and other countries may diminish the value of the patents we rely on or narrow the scope of our patent protection. The laws of other countries may not protect our rights to the same extent as the laws of the U.S. For example, patent laws in various jurisdictions, including jurisdictions covering significant commercial markets, such as the European Patent Office, China and Japan, restrict the patentability of methods of treatment of the human body more than U.S. law does. Our inability to protect our innovations could have a material adverse effect on our ability to generate revenue. There may be significant pressure on the U.S. government and international governmental bodies to limit the scope of patent protection both inside and outside the U.S. for disease treatments that prove successful, as a matter of public policy regarding worldwide health concerns. Countries other than the U.S. may have patent laws less favorable to patentees than those upheld by U.S. courts, allowing foreign competitors a better opportunity to create, develop, and market competing products. Countries other than the U.S. may, under certain circumstances, force us to grant a license under our patents to a competitor, thus allowing the competitor to compete with us in that jurisdiction or forcing us to lower the price of our product in that jurisdiction.

Furthermore, the degree of future protection for our proprietary rights is uncertain because legal means afford only limited protection and may not adequately protect our rights or permit us to gain or keep our competitive advantage. For example:

In addition, to the extent that we are unable to obtain and maintain patent protection for our technologies or product, or in the event that such patent protection expires, it may no longer be cost-effective to extend our portfolio by pursuing additional development of any future products.

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If our trademarks and tradenames are not adequately protected, then we may not be able to build name recognition in our markets and our business may be adversely affected.

We rely on trademarks, service marks, tradenames and brand names to distinguish our products from the products of our competitors, and have registered or applied to register these trademarks. We cannot assure you that our trademark applications will be approved. During trademark registration proceedings, we may receive rejections. Although we are given an opportunity to respond to those rejections, we may be unable to overcome such rejections. In addition, in proceedings before the USPTO and comparable agencies in many foreign jurisdictions, third parties are given an opportunity to oppose pending trademark applications and to seek to cancel registered trademarks. Opposition or cancellation proceedings may be filed against our trademarks, and our trademarks may not survive such proceedings. In the event that our trademarks are successfully challenged, we could be forced to rebrand our products, which could result in loss of brand recognition and could require us to devote resources towards advertising and marketing new brands. At times, competitors may adopt trade names or trademarks similar to ours, thereby impeding our ability to build brand identity and possibly leading to market confusion. Certain of our current or future trademarks may become so well known by the public that their use becomes generic and they lose trademark protection. Over the long term, if we are unable to establish name recognition based on our trademarks and trade names, then we may not be able to compete effectively and our business, financial condition and results of operations may be adversely affected.

We may be subject to claims that we or our employees have misappropriated the intellectual property of a third party, including trade secrets or know-how, or are in breach of non-competition or non-solicitation agreements with our competitors.

Many of our employees and consultants were previously employed at or engaged by other medical device, biotechnology or pharmaceutical companies, including our competitors or potential competitors. Some of these employees, consultants and contractors may have executed proprietary rights, non-disclosure and non-competition agreements in connection with such employment. Although we instruct our employees and consultants not to, and otherwise endeavor to ensure that they do not, use or disclose the intellectual property, proprietary information, know-how or trade secrets of others in their work for us, we may be subject to claims that we or these individuals have, inadvertently or otherwise, misappropriated the intellectual property or disclosed the alleged trade secrets or other proprietary information of such employers or competitors.

Additionally, we may be subject to claims from third parties challenging our ownership interest in intellectual property we regard as our own, based on claims that our employees or consultants have breached an obligation to assign inventions to another employer, to a former employer, or to another person or entity. Litigation may be necessary to defend against any other claims, and it may be necessary or we may desire to enter into a license to settle any such claim; however, there can be no assurance that we would be able to obtain a license on commercially reasonable terms, if at all. If our defense to those claims fails, in addition to paying monetary damages, a court could prohibit us from using technologies or features that are essential to our products, if such technologies or features are found to incorporate or be derived from the trade secrets or other proprietary information of the former employers. An inability to incorporate technologies or features that are important or essential to our products could have a material adverse effect on our business, financial condition and results of operations, and may prevent us from selling our products. In addition, we may lose valuable intellectual property rights or personnel. Even if we are successful in defending against these claims, litigation could result in substantial costs and could be a distraction to management. Any litigation or the threat thereof may adversely affect our ability to hire employees or contract with independent sales representatives. A loss of key personnel or their work product could hamper or prevent our ability to commercialize our products, which could have an adverse effect on our business, financial condition and results of operations.

Others may challenge inventorship or claim an ownership interest in our intellectual property which could expose us to litigation and have a significant adverse effect on our prospects.

Determinations of inventorship can be subjective. While we undertake to accurately identify correct inventorship of inventions made on our behalf by our employees, consultants and contractors, an employee,

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consultant or contractor may disagree with our determination of inventorship and assert a claim of inventorship. Any disagreement over inventorship could result in our being forced to defend our determination of inventorship in a legal action, which could result in substantial costs and be a distraction to our senior management and scientific personnel.

While we typically require employees, consultants and contractors who may develop intellectual property on our behalf to execute agreements assigning such intellectual property to us, we may be unsuccessful in obtaining execution of assignment agreements with each party who in fact develops intellectual property that we regard as our own. If we are unsuccessful in obtaining assignment agreements from an employee, consultant or contractor who develops intellectual property on our behalf, the employee, consultant or contractor may later claim ownership of the invention. Any disagreement over ownership of intellectual property could result in our losing ownership, or exclusive ownership, of the contested intellectual property, paying monetary damages and/ or being enjoined from clinical testing, manufacturing and marketing of the affected product candidate(s). Even if we are successful in defending against such claims, a dispute could result in substantial costs and be a distraction to our senior management and scientific personnel.

We may become involved in legal proceedings to protect or enforce our intellectual property rights, which could be expensive, time consuming, or unsuccessful.

Competitors may infringe or otherwise violate the patents we rely on, or our other intellectual property rights. To counter infringement or unauthorized use, we may be required to file infringement claims, which can be expensive and time-consuming. Any claims that we assert against perceived infringers could also provoke these parties to assert counterclaims against us alleging that we infringe their intellectual property rights, or that our intellectual property rights are invalid. In an infringement proceeding, a court may decide that a patent we are asserting is invalid or unenforceable, or may refuse to stop the other party from using the technology at issue on the grounds that the patents we are asserting do not cover the technology in question. With respect to a counterclaim of invalidity, we cannot be certain that there is no invalidating prior art of which we and the patent examiner were unaware during prosecution. An adverse result in any litigation proceeding could put one or more patents at risk of being invalidated or interpreted narrowly, or prevent us from stopping the other party from using the invention at issue on the grounds that our patent claims do not cover the invention. If any of our patents are found invalid or unenforceable, or construed narrowly, our ability to stop the other party from launching a competitive product would be materially impaired. Further, such adverse outcomes could limit our ability to assert those patents against future competitors. Loss of patent protection would have a material adverse impact on our business.

Even if we establish infringement of any of our patents by a competitive product, a court may decide not to grant an injunction against further infringing activity, thus allowing the competitive product to continue to be marketed by the competitor. It is difficult to obtain an injunction in U.S. litigation and a court could decide that the competitor should instead pay us a “reasonable royalty” as determined by the court, and/or other monetary damages. A reasonable royalty or other monetary damages may or may not be an adequate remedy. Loss of exclusivity and/or competition from a related product would have a material adverse impact on our business.

Litigation often involves significant amounts of public disclosures. Such disclosures could have a materially adverse impact on our competitive position or our stock prices. During any litigation, we would be required to produce voluminous records related to our patents and our research and development activities in a process called discovery. The discovery process may result in the disclosure of some of our confidential information. There could also be public announcements of the results of hearings, motions or other interim proceedings or developments.

Litigation is inherently expensive, and the outcome is often uncertain. Any litigation likely would substantially increase our operating losses and reduce our resources available for development activities. Further, we may not have sufficient financial or other resources to adequately conduct such litigation or proceedings. Some of our

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competitors may be able to sustain the costs of such litigation or proceedings more effectively than we can because of their substantially greater financial resources. As a result, we may conclude that even if a competitor is infringing any of our patents, the risk-adjusted cost of bringing and enforcing such a claim or action may be too high or not in the best interest of us or our stockholders. In such cases, we may decide that the more prudent course of action is to simply monitor the situation or initiate or seek some other non-litigious action or solution.

Concurrently with an infringement litigation, third parties may also be able to challenge the validity of our patents before administrative bodies in the U.S. or abroad. Such mechanisms include re-examination, post grant review and equivalent proceedings in foreign jurisdictions, e.g., opposition proceedings. Such proceedings could result in revocation or amendment of our patents in such a way that they no longer cover our products, potentially negatively impacting any concurrent litigation.

Interference or derivation proceedings provoked by third parties or brought by the USPTO or any other patent authority may be necessary to determine the priority of inventions or other matters of inventorship with respect to patents and patent applications. In addition to challenges during litigation, third parties can challenge the validity of our patents in the U.S. using post-grant review and inter partes review proceedings, which some third parties have been using to cause the cancellation of selected or all claims of issued patents of competitors. For a patent filed March 16, 2013 or later, a petition for post-grant review can be filed by a third party in a nine-month window from issuance of the patent. A petition for inter partes review can be filed immediately following the issuance of a patent if the patent has an effective filing date prior to March 16, 2013. A petition for inter partes review can be filed after the nine-month period for filing a post-grant review petition has expired for a patent with an effective filing date of March 16, 2013 or later. Post-grant review proceedings can be brought on any ground of invalidity, whereas inter partes review proceedings can only raise an invalidity challenge based on published prior art and patents. These adversarial actions at the USPTO review patent claims without the presumption of validity afforded to U.S. patents in lawsuits in U.S. federal courts and use a lower burden of proof than used in litigation in U.S. federal courts. Therefore, it is generally considered easier for a competitor or third party to have a U.S. patent invalidated in a USPTO post-grant review or inter partes review proceeding than invalidated in a litigation in a U.S. federal court. If any of our patents are challenged by a third party in such a USPTO proceeding, there is no guarantee that we or any future licensors or collaborators will be successful in defending the patent, which may result in a loss of the challenged patent right to us. We may become involved in proceedings, including oppositions, interferences, derivation proceedings inter partes reviews, patent nullification proceedings, or re-examinations, challenging our patent rights or the patent rights of others, and the outcome of any such proceedings are highly uncertain. An adverse determination in any such proceeding could reduce the scope of, or invalidate, important patent rights, allow third parties to commercialize our technology or products and compete directly with us, without payment to us, or result in our inability to manufacture or commercialize products without infringing third-party patent rights. Our business also could be harmed if a prevailing party does not offer us a license on commercially reasonable terms, if any license is offered at all. Litigation or other proceedings may fail and, even if successful, may result in substantial costs and distract our management and other employees. We may also become involved in disputes with others regarding the ownership of intellectual property rights. If we are unable to resolve these disputes, we could lose valuable intellectual property rights.

Even if resolved in our favor, litigation or other legal proceedings relating to intellectual property claims may cause us to incur significant expenses, and could distract our technical or management personnel from their normal responsibilities. In addition, there could be public announcements of the results of hearings, motions or other interim proceedings or developments and if securities analysts or investors perceive these results to be negative, it could have a substantial adverse effect on the market price of our common stock. Such litigation or proceedings could substantially increase our operating losses and reduce the resources available for development activities or any future sales, marketing or distribution activities. Uncertainties resulting from the initiation and continuation of intellectual property litigation or other proceedings could have an adverse effect on our ability to compete in the marketplace.

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If we are unable to protect the confidentiality of our trade secrets, the value of our technology could be materially adversely affected, harming our business and competitive position.

In addition to our patented technology and products, we rely upon confidential proprietary information, including trade secrets, unpatented know-how, technology and other proprietary information, to develop and maintain our competitive position. Any disclosure to or misappropriation by third parties of our confidential proprietary information could enable competitors to quickly duplicate or surpass our technological achievements, thus eroding our competitive position in the market. Although we have taken steps to protect our confidential proprietary information, in part, by confidentiality agreements with our employees and our collaborators, consultants, vendors and advisors, we cannot provide assurances that all such agreements have been duly executed. Third parties may still obtain this information or may come upon this or similar information independently, and we cannot be certain that our trade secrets and other confidential information will not be disclosed or that competitors will not otherwise gain access to our trade secrets, or that technology relevant to our business will not be independently developed by a person that is not a party to such an agreement. Furthermore, if the employees, consultants, collaborators, vendors or advisors that are parties to these agreements breach or violate the terms of these agreements, we may not have adequate remedies for any such breach or violation, and we could lose our trade secrets through such breaches or violations. Further, our trade secrets could be disclosed, misappropriated or otherwise become known or be independently discovered by our competitors. In addition, intellectual property laws in foreign countries may not protect trade secrets and confidential information to the same extent as the laws of the U.S. If we are unable to prevent disclosure of the intellectual property related to our technologies to third parties, we may not be able to establish or maintain a competitive advantage in our market, which would harm our ability to protect our rights and have an adverse effect on our business.

We may not be able to protect or enforce our intellectual property rights throughout the world.

Filing, prosecuting and defending patents on all of our planned products throughout the world may be prohibitively expensive to us. The requirements for patentability may differ in certain countries, particularly in developing countries; thus, even in countries where we do pursue patent protection, there can be no assurance that any patents will issue with claims that cover our products.

Moreover, our ability to protect and enforce our intellectual property rights may be adversely affected by unforeseen changes in foreign intellectual property laws. Additionally, laws of some countries outside of the U.S. and Europe do not afford intellectual property protection to the same extent as the laws of the U.S. and Europe. Many companies have encountered significant problems in protecting and defending intellectual property rights in certain foreign jurisdictions. This could make it difficult for us to stop the infringement of our patents or the misappropriation of our other intellectual property rights. For example, many foreign countries have compulsory licensing laws under which a patent owner must grant licenses to third parties. Consequently, we may not be able to prevent third parties from practicing our inventions in certain countries outside the U.S. and Europe or from selling or importing products made from our inventions in and into the U.S. or other jurisdictions. Consequently, competitors may use our technologies in jurisdictions where we have not obtained patent protection to develop their own products and, further, may export otherwise infringing products to territories where we have patent protection but where enforcement is not as strong as in the U.S. These products may compete with our products in jurisdictions where we do not have any issued patents and our patent claims or other intellectual property rights may not be effective or sufficient to prevent them from so competing.

Many companies have encountered significant problems in protecting and defending intellectual property rights in international jurisdictions. The legal systems of certain countries, particularly certain developing countries, do not favor the enforcement of patents and other intellectual property protection, which could make it difficult for us to stop the infringement of our patents or marketing of competing products in violation of our proprietary rights generally. Proceedings to enforce our patent rights in foreign jurisdictions could result in substantial cost and divert our efforts and attention from other aspects of our business. Further, such proceedings could put our patents (in that or other jurisdictions) at risk of being invalidated, held unenforceable or interpreted narrowly; put our pending patent applications at risk of not issuing; and provoke third parties to assert claims

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against us. We may not prevail in any lawsuits that we initiate, and the damages or other remedies awarded, if any, may not be commercially meaningful. Furthermore, we cannot ensure that we will be able to initiate or maintain the same level or quality of patent protection in all jurisdictions in which we may wish to market our products. Accordingly, our efforts to protect our intellectual property rights in such countries may be inadequate.

Changes in the interpretation of patent law in the United States and other jurisdictions could diminish the value of patents in general, thereby impairing our ability to protect our products.

In the U.S., the U.S. Congress is responsible for passing laws establishing patentability standards, and, as with any laws, implementation is left to federal agencies and the federal courts based on their interpretations of the laws. In the U.S., interpretation of patent standards can vary significantly within the USPTO, and across the various federal courts, including the U.S. Supreme Court. Recently, the U.S. Supreme Court has ruled on several patent cases, generally limiting the types of inventions that can be patented. Further, there are open questions regarding interpretation of patentability standards that the U.S. Supreme Court has yet to decisively address. Absent clear guidance from the U.S. Supreme Court, the USPTO has become increasingly conservative in its interpretation of patent laws and standards. Similar tensions between government administrations and judicial interpretation of patent laws in other jurisdictions may resulting in changes to the scope or validity of our patents in such jurisdictions.

In addition to increasing uncertainty with regard to our ability to obtain patents in the future, the legal landscape in the U.S. and outside the U.S. has created uncertainty with respect to the value of patents. Depending on any actions by applicable legislating bodies, and future decisions by the entities implementing such laws, the laws and regulations governing patents could change in unpredictable ways and could weaken our ability to obtain new patents or to enforce our existing patents and patents that we might obtain in the future.

Obtaining and maintaining patent protection depends on compliance with various procedural, document submission, fee payment and other requirements imposed by governmental patent agencies, and our patent protection could be reduced or eliminated for non-compliance with these requirements.

Periodic maintenance fees, renewal fees, annuity fees and various other governmental fees on patents or applications will be due to be paid by us to the USPTO and various governmental patent agencies outside of the U.S. in several stages over the lifetime of the patents or applications. The USPTO and various non-U.S. governmental patent agencies require compliance with a number of procedural, documentary, fee payment and other similar provisions during the patent application process. Though we use commercially reasonable efforts to comply with all applicable maintenance requirements, we may fail to do so on occasion. In many cases, such an inadvertent lapse can be cured by payment of a late fee or by other means in accordance with the applicable rules. However, there are situations in which non-compliance, whether intentional or not, can result in abandonment or lapse of the patent or patent application, resulting in partial or complete loss of patent rights in the relevant jurisdiction. In such an event, our competitors might be able to use our technologies and this circumstance would have a material adverse effect on our business.

We may need to acquire or license intellectual property from third parties, and such licenses may not be available or may not be available on commercially reasonable terms.

A third party may hold intellectual property, including patent rights, that we may determine are important or necessary to the development of our technology and products. In addition, it may be necessary for us to use the patented or proprietary technology of one or more third parties to commercialize our current and future products. The licensing and acquisition of third-party intellectual property rights is a competitive area, and a number of more established companies may pursue strategies to license or acquire third-party intellectual property rights that we may consider attractive. These established companies may have a competitive advantage over us due to their size, cash resources and greater clinical development and commercialization capabilities.

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If we determine to license or acquire third-party intellectual property and we are unable to acquire such intellectual property outright, or obtain licenses to such intellectual property from such third parties when needed or on commercially reasonable terms, our ability to commercialize our products at such time would likely be delayed or we may have to abandon development of that product or program and our business and financial condition could suffer.

If we in-license additional technologies or products in the future, we might become dependent on proprietary rights from third parties with respect to those technologies or products. Any termination of such licenses could result in the loss of significant rights and would cause material adverse harm to our ability to develop and commercialize any product subject to such licenses.

Disputes may also arise between us and any future licensors regarding intellectual property subject to a license agreement. If disputes over intellectual property that we have licensed prevent or impair our ability to maintain our current licensing arrangements on acceptable terms, we may be unable to successfully develop and commercialize the affected product(s).

The risks described elsewhere pertaining to our intellectual property rights also apply to the intellectual property rights that we may determine to in-license, and any failure by us or any future licensors to obtain, maintain, defend and enforce such rights could have an adverse effect on our business. In some cases we may not have control over the prosecution, maintenance or enforcement of the patents that we determine to license, and may not have sufficient ability to provide input into the patent prosecution, maintenance and defense process with respect to such patents, and potential future licensors may fail to take the steps that we believe are necessary or desirable in order to obtain, maintain, defend and enforce the licensed patents.

The Allurion VCS and other products or services contain third-party open source software components. Certain use of such open source components with our proprietary software could adversely affect our ability to charge fees for, or otherwise protect the value of, our offerings.

The Allurion VCS and our other products and services contain software licensed to us by third-party authors under “open source” licenses. Use of such software may entail greater risks than use of non-open source third-party commercial software, as open source licensors generally do not provide support, warranties, indemnification or other contractual protections regarding infringement claims or the quality of the code. Although we seek to monitor our use of open source software to avoid such consequences and to comply with the terms thereof, the terms of many open source licenses have not been interpreted by U.S. or foreign courts, and there is a risk that these licenses could be construed in a way that could impose unanticipated conditions or restrictions on our ability to provide or distribute our platform. If we are held to have breached the terms of an open source software license, we could face liability which may result in an injunction against providing our offering, or be required to seek costly licenses from third parties to continue providing our offerings on terms that are not economically feasible, to re-engineer our platform, to discontinue or delay the provision of our offerings if re-engineering could not be accomplished on a timely basis or to make generally available, in source code form, our proprietary code, any of which could adversely affect our business, financial condition and results of operations.

Our internal computer systems, or those used by third parties which we rely on, may fail or suffer security breaches.

Despite the implementation of security measures, our internal computer systems, or those used by third parties which we rely on, are vulnerable to damage from computer viruses and unauthorized access, malware, natural disasters, fire, terrorism, war, telecommunication failures, electrical failures, cyber-attacks or cyber-intrusions over the Internet, attachments to emails, persons inside our organization, or persons with access to systems inside our organization. Although our information security program is in compliance with the global ISO 27001:2013 standards, it does not yet fully comply with all of the additions and changes in the updated ISO 27001:2022 version of the standards, which we anticipate complying with prior to the required transition date of October 31, 2025 to maintain ISO 27001 security certification.

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If our security measures are breached, whether due to failure to comply with the ISO 27001:2022 version of the standards or otherwise, or if design flaws in our software or information systems are exposed and exploited, and, as a result, a third party obtains unauthorized access to any of our or our customer’s data, our relationships with our customers and distributors may be damaged, and we could incur significant liability and reputational harm. The risk of a security breach or disruption, particularly through cyber-attacks or cyber intrusion, including by computer hackers, foreign governments, and cyber terrorists, has generally increased as the number, intensity and sophistication of attempted attacks and intrusions from around the world have increased. While we have not experienced any such material system failure or security breach to our knowledge to date, if such an event were to occur and cause interruptions in our operations, it could result in a material disruption of our development programs and our business operations. For example, the loss of data from completed, ongoing or future trials could result in delays in our regulatory approval efforts and significantly increase our costs to recover or reproduce the data. To the extent that any disruption or security breach were to result in a loss of, or damage to, our data or applications, or inappropriate disclosure of confidential or proprietary information, we could incur liability and the further development and commercialization of our current and future products could be delayed.

We rely on internet infrastructure, bandwidth providers, third-party computer hardware and software and other third parties for providing services to our customers and patients, and any failure or interruption in the services provided by these third parties could expose us to litigation and negatively impact our relationships with customers and patients, adversely affecting our operating results.

Our ability to deliver our internet-based services depends on the development and maintenance of the infrastructure of the internet by third parties. This includes maintenance of a reliable network backbone with the necessary speed, data capacity, bandwidth capacity and security. Our services are designed to operate without interruption. However, we may experience future interruptions and delays in services and availability from time to time. In the event of a catastrophic event with respect to one or more of our systems, we may experience an extended period of system unavailability, which could negatively impact our relationship with clients and members. To operate without interruption, both we and our service providers must guard against:

We also rely on software licensed from third parties in order to offer our services. These licenses are generally commercially available on varying terms. However, it is possible that this software may not continue to be available on commercially reasonable terms, or at all. Any loss of the right to use any of this software could result in delays in the provisioning of our services until equivalent technology is either developed by us, or, if available, is identified, obtained and integrated. Furthermore, our use of additional or alternative third-party software would require us to enter into license agreements with third parties, and integration of our software with new third-party software may require significant work and require substantial investment of our time and resources. Also, any undetected errors or defects in third-party software could prevent the deployment or impair the functionality of our software, delay new updates or enhancements to our platform, result in a failure of our platform, and injure our reputation.

Our failure to adequately protect personal information in compliance with evolving legal requirements could harm our business.

In the ordinary course of our business, we collect and store sensitive data, including legally protected patient health information and personally identifiable information. We collect this kind of information on our customers

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for purposes of servicing potential warranty claims and for post-marketing safety vigilance. Data protection and privacy-related laws and regulations are evolving and may result in ever-increasing regulatory and public scrutiny and escalating levels of enforcement and sanctions.

There are a number of state, federal and international laws protecting the privacy and security of health information and personal data. As part of the American Recovery and Reinvestment Act 2009 (“ARRA”), the U.S. Congress amended the privacy and security provisions of HIPAA. HIPAA imposes limitations on the use and disclosure of an individual’s protected health information by certain health care providers, health care clearinghouses, and health insurance plans, collectively referred to as covered entities, that involve the creation, use, maintenance or disclosure of protected health information. The HIPAA amendments also impose compliance obligations and corresponding penalties for non-compliance on individuals and entities that provide services to health care providers and other covered entities, collectively referred to as business associates. Most recently, on December 10, 2020, HHS issued a Notice of Proposed Rulemaking (the public comment period to which was further extended in March 2021) which, if finalized, would make changes to some of HIPAA’s regulatory requirements, which would impact us, to the extent we are a business associate. ARRA also significantly increased the penalties for improper use or disclosure of an individual’s protected health information under HIPAA and extended enforcement authority to state attorneys general. The amendments also create notification requirements for individuals whose protected health information has been inappropriately accessed or disclosed, notification requirements to federal regulators and in some cases, notification to local and national media. Notification is not required under HIPAA if the health information that is improperly used or disclosed is deemed secured in accordance with encryption or other standards developed by HHS. Most states have laws requiring notification of affected individuals and state regulators in the event of a breach of personal information, which is a broader class of information than the protected health information protected by HIPAA. Many state laws impose significant data security requirements, such as encryption or mandatory contractual terms to ensure ongoing protection of personal information.

In addition, even when HIPAA does not apply, according to the FTC, failing to take appropriate steps to keep consumers’ personal information secure constitutes unfair acts or practices in or affecting commerce in violation of Section 5(a) of the FTCA, 15 U.S.C § 45(a). The FTC expects a company’s data security measures to be reasonable and appropriate in light of the sensitivity and volume of consumer information it holds, the size and complexity of its business, and the cost of available tools to improve security and reduce vulnerabilities. Medical data is considered sensitive data that merits stronger safeguards. The FTC’s guidance for appropriately securing consumers’ personal information is similar to what is required by the HIPAA Security Rule.

Many foreign countries and governmental bodies, including the EU, Canada, Australia and other relevant jurisdictions, have laws and regulations concerning the collection and use of personal or sensitive data obtained from their residents or by businesses operating within their jurisdiction. For example, the European Commission adopted the General Data Protection Regulation (“GDPR”), effective on May 25, 2018, that supersedes previous EU data protection legislation, imposes more stringent EU data protection requirements and provides for greater penalties for non-compliance. The GDPR applies to any company established in the EU as well as to those outside the EU if they collect and use personal data in connection with the offering goods or services to individuals in the EU or the monitoring of their behavior.

In addition, following the United Kingdom’s exit from the EU on January 31, 2020, the GDPR ceased to apply in the United Kingdom at the end of the transition period on December 31, 2020. However, as of January 1, 2021, the United Kingdom’s European Union (Withdrawal) Act 2018 incorporated the GDPR (as it existed on December 31, 2020 but subject to certain UK specific amendments) into United Kingdom law (referred to as the UK GDPR). The UK GDPR and the UK Data Protection Act 2018 set out the UK’s data protection regime, which is independent from but aligned to the EU’s data protection regime. In this prospectus, “GDPR” refers to both the EU and the UK GDPR, unless specified otherwise. The GDPR enhances data protection obligations for processors and controllers of personal data, including, for example, expanded disclosures about how personal information is to be used, limitations on retention of information, mandatory data

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breach notification requirements and onerous new obligations on services providers. Non-compliance with the GDPR can trigger steep fines of up to €20 million (£17.5 million) or 4% of total worldwide annual revenues, whichever is higher. Given the breadth and depth of changes in data protection obligations, meeting the GDPR’s requirements requires time, resources and a review of the technology and systems currently in use against the GDPR’s requirements.

EU Member States have adopted national laws to implement the EU GDPR, which may partially deviate from the EU GDPR, and the competent authorities in the EU Member States may interpret GDPR obligations slightly differently from country to country, such that we do not expect to operate in a uniform legal landscape in the EU with respect to data protection laws. In addition, the UK has announced plans to reform the UK data protection regime.

The GDPR imposes strict rules on the transfer of personal data out of the European Economic Area (“EEA”), or the United Kingdom to third countries, including the U.S. On June 4, 2021, the European Commission issued new forms of standard contractual clauses for data transfers from controllers or processors in the EEA, or otherwise subject to the GDPR, to controllers or processors established outside the EEA, and not subject to the GDPR. The new forms of standard contractual clauses have replaced the standard contractual clauses that were adopted previously under the Data Protection Directive. The UK is not subject to the European Commission’s new standard contractual clauses but has published its own transfer mechanism, the International Data Transfer Agreement, which enables transfers from the UK. We will be required to transition to the new forms of standard contractual clauses and doing so will require significant effort and cost. Although the United Kingdom is regarded as a third country under the EU GDPR, the European Commission has issued a decision recognizing the United Kingdom as providing adequate protection under the EU GDPR and, therefore, transfers of personal data originating in the EEA to the United Kingdom remain unrestricted. Like the EU GDPR, the UK GDPR restricts personal data transfers outside the United Kingdom to countries not regarded by the United Kingdom as providing adequate protection. The United Kingdom government has confirmed that personal data transfers from the United Kingdom to the EEA remain free flowing.

We may be at risk of enforcement actions taken by certain EU or UK data protection authorities until such point in time that we may be able to ensure that all transfers of personal data to us from the EEA or the United Kingdom are conducted in compliance with all applicable regulatory obligations, the guidance of data protection authorities and evolving best practices. We may find it necessary to establish systems to maintain personal data originating from the EU/UK in the EEA or the United Kingdom (as applicable), which may involve substantial expense and may cause us to need to divert resources from other aspects of our business, all of which may adversely affect our business. Our failure to comply with applicable laws and regulations, or to protect such data, could result in enforcement actions against us, including fines, imprisonment of company officials and public censure, claims for damages by end-customers and other affected individuals, damage to our reputation and loss of goodwill, any of which could harm on our operations, financial performance, and business. Evolving and changing definitions of personal data and personal information, within the European Union, the United Kingdom, the U.S., and elsewhere, may limit or inhibit our ability to operate or expand our business, including limiting strategic partnerships that may involve the sharing of data. Moreover, if the relevant laws and regulations change, or are interpreted and applied in a manner that is inconsistent with our data practices or the operation of our products, we may need to expend resources in order to change our business operations, data practices, or the manner in which our products operate. Even the perception of privacy concerns, whether or not valid, may harm our reputation and inhibit adoption of our products.

There is the risk that the limits we obtained for our cyber liability insurance may not cover the total loss experienced in the event of a data security incident, including the financial loss, legal costs, and business and reputational harm, particularly if there is an interruption to our systems. Additionally, there is the risk of a data privacy or security incident by an employee, which may expose us to liability. If personal information of our customers or employees is misappropriated, our reputation with our customers and employees may be injured resulting in loss of business and/or morale, and we may incur costs to remediate possible injury to our customers

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and employees or be required to pay fines or take other action with respect to judicial or regulatory actions arising out of such incidents.

If we are not able to satisfy data protection, security, privacy, and other government- and industry-specific requirements, our business could be harmed.

There are a number of data protection, security, privacy and other government-and industry-specific requirements, including those that require companies to notify individuals of data security incidents involving certain types of personal data. Security compromises experienced by other companies, by our customers or by us may lead to public disclosures, which could harm our reputation, erode customer confidence in the effectiveness of our security measures, and negatively impact our other products and our ability to attract new customers. As we expand into new regions, we will need to comply with new requirements. If we cannot comply or if we incur a violation in one or more of these requirements, our growth could be adversely impacted, and we could incur significant liability.

We have incorporated, and plan to incorporate in the future, artificial intelligence, or AI, into some of our products. This technology is new and developing and may present risks that could affect our business.

We have incorporated, and plan to incorporate in the future, AI, including large language models (such as GPT), machine learning, and predictive analytics into our products under a platform which we call Allurion Iris. Coach Iris is part of the Allurion Iris AI platform, which leverages large learning models to help patients during their weight loss journey by providing 24/7 virtual coaching. AI is a new and emerging technology that is in its early stages of commercial use, particularly within the medical device industry. If any of our products that incorporate AI have perceived or actual negative impacts on the clinicians or patients who use them, we may experience brand or reputational harm, competitive harm or legal liability. The rapid evolution of AI may also require the application of significant resources to develop, test and maintain our products and services that incorporate AI in order to help ensure that it is implemented in a socially responsible manner, to minimize any real or perceived unintended harmful impacts. In addition, AI is subject to a complex and evolving regulatory landscape, including data protection, privacy, and potentially other laws and different jurisdictions have taken and may take in the future varying approaches to regulating AI. Compliance with these laws and regulations can be complex, costly and time-consuming, and there is a risk of regulatory enforcement actions or litigation if we fail to comply with these requirements. As regulations evolve, we may have to alter our business practices or products in order to comply with regulatory requirements.

Risks Related to Our Financial Condition and Capital Requirements

We have incurred net operating losses in the past and expect to incur net operating losses for the foreseeable future.

We have incurred net operating losses since our inception, and we continue to incur significant research and development, general and administrative, and sales and marketing expenses related to our operations. We do not expect to be profitable in 2024, and in future years we expect to incur significant sales and marketing expenses to expand our business and clinical research expenses related to, among other things, the AUDACITY trial for the Allurion Balloon in the U.S. Investment in medical device product development, particularly clinical trials, is highly speculative. It entails substantial upfront capital expenditures and significant risk that any potential planned product will fail to demonstrate adequate safety or effectiveness. We expect to generate significant operating losses for the foreseeable future. As of September 30, 2024 and December 31, 2023, we had an accumulated deficit of $218.4 million and $212.8 million, respectively. Based on our recurring losses and expectations to incur significant expenses and negative cash flow for the foreseeable future, the need to raise additional capital to finance our future operations, we have concluded that there is substantial doubt about our ability to continue as a going concern for a period of one year from the date that the consolidated financial statements for the quarter ended September 30, 2024 are issued.

We expect that our future financial results will depend primarily on our success in launching, selling and supporting the Allurion Balloon and other products that are part of our weight loss platform. This will require us

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to be successful in a range of activities, including manufacturing, marketing, and selling the Allurion Balloon. We may not succeed in these activities and may never generate revenue that is sufficient to be profitable in the future. Even if we are profitable, we may not be able to sustain or increase profitability on a quarterly or annual basis. Our failure to achieve sustained profitability would depress the value of our company and could impair our ability to raise capital, expand our business, diversify our planned products, market our current and future products, or continue our operations.

We have a significant amount of debt, which may affect our ability to operate our business and secure additional financing in the future.

On April 16, 2024, we issued an aggregate principal amount of $48 million of Notes due April 16, 2031. The interest rate is fixed at 6.00% per annum and is payable quarterly in cash or, at our option, in kind for the first three years. In addition, upon consummation of the Business Combination, we received an investment of $40 million from RTW in exchange for future royalty payments pursuant to the Revenue Interest Financing; we are also required to make royalty payments on an additional $7.5 million under the Additional RIFA. We may also incur additional indebtedness to meet future financing needs.

Our ability to make scheduled payments of debt principal and interest on our existing or future indebtedness, or to refinance our indebtedness, and to pay our royalty obligations, depends on our future performance, which is subject to economic, financial, competitive, and other factors beyond our control. Our debt, including the Amended Note Purchase Agreement, contains certain financial covenants relating to minimum liquidity and minimum revenue requirements. We have received waivers of minimum liquidity and minimum revenue requirements under debt arrangements in the past, and there is no guarantee that we will not need to obtain waivers of financial covenants in the future or that, should we require them, we would be able to obtain such waiver on terms favorable to the Company, or at all. To the extent that we are unable to continue to comply with such ongoing minimum liquidity and revenue requirements, including as a result of any weakness in our business or macroeconomic trends, and are unable to procure additional waivers from RTW or other lenders in the future, such lenders may pursue a number of actions, including declaring us in breach of our covenants, requiring conditions to cure such breaches and/or exercising foreclosure remedies. Any or all of these actions may materially impact our working capital, and our business may not continue to generate sufficient cash flows from operations to fund operations, service our debt, and satisfy our royalty payment obligations. If we are unable to generate such cash flows, we may be required to adopt one or more alternatives, such as raising additional capital on terms that may be unfavorable, selling assets or portions of our business, or ceasing operations. Our ability to refinance our existing or any future indebtedness will depend on the capital markets and our financial condition at such time. We may not be able to engage in any of these activities or engage in these activities on desirable terms, which could result in a default on our debt obligations.

In addition, our indebtedness owed to RTW is collateralized by substantially all of our assets and subject to customary financial and operating covenants limiting our ability to, among other things, incur additional indebtedness, change our material line of business, modify our organizational documents, create liens, sell assets, or prepay other indebtedness. These covenants may make it difficult to operate our business. We are also subject to standard event of default provisions under the Revenue Interest Financing Agreement, Additional RIFA and the Amended Note Purchase Agreement, that, if triggered, would allow the debt to be accelerated, which could significantly deplete our cash resources, cause us to raise additional capital at unfavorable terms, require us to sell portions of our business or result in us becoming insolvent. The existing collateral pledged to RTW, and the covenants to which we are bound, may (i) prevent us from being able to secure additional debt or equity financing on favorable terms, or at all, or to pursue business opportunities, including potential acquisitions, (ii) heighten our vulnerability to downturns in our business, industry or the economy in general, (iii) limit our ability to adjust to changing market conditions, and (iv) place us at a competitive disadvantage compared to our competitors who have greater capital resources.

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We may need additional funds to support our operations, and such funding may not be available to us on acceptable terms, or at all, which would force us to delay, reduce or suspend our planned development and commercialization efforts. Raising additional capital may subject us to unfavorable terms, cause dilution to our existing stockholders, restrict our operations, or require us to relinquish rights to our products and technologies.

Our operations have consumed substantial amounts of cash since our inception, and we expect to incur significant expenses in connection with our planned clinical research, development and product commercialization efforts. If our available cash resources and anticipated cash flow from operations are insufficient to satisfy our liquidity requirements, we may seek to sell equity or convertible debt securities, to obtain another form of third-party funding, or to enter into other debt financing. Any failure to raise the funds necessary to support our operations may force us to delay, reduce or suspend our planned clinical trials, research and development programs, or other commercialization efforts.

To the extent that we raise additional capital through the sale of equity or convertible debt securities, your ownership may be diluted, and the terms of these securities may include liquidation or other preferences that adversely affect your rights as a stockholder. Debt financing, if available, may involve agreements that include covenants limiting or restricting our ability to take certain actions, such as incurring additional debt, making capital expenditures or declaring dividends.

If we raise additional funds through strategic collaborations or partnerships, or marketing, distribution, royalty or licensing arrangements with third parties, we may be required to do so at an earlier stage than would otherwise be ideal and/or may have to limit valuable rights to our intellectual property, technologies, products, or future revenue streams, or grant licenses or other rights on terms that are not favorable to us. Furthermore, any additional fundraising efforts may divert our management from their day-to-day activities, which may adversely affect our ability to develop and commercialize our products.

We receive the majority of our revenue from sales to health care providers and other third-party distributors, and the failure to collect receivables from them could adversely affect our financial position and results of operations.

We receive the majority of our revenue from sales to health care providers and other third-party distributors. We extend credit to our customers for a significant portion of our sales and receivables from our customers are not secured by any type of collateral. We are therefore subject to the risk that our customers may not pay for the products they have purchased, pay at a slower rate than we have historically experienced, or may seek extended payment terms, which may, in turn, result in delays in our cash collection and increases in our accounts receivable. Our customers may encounter cash flow or operating difficulties, which may reduce their demand for our products or delay their payments to us, thereby increasing our accounts receivable turnover days, or increasing the risk that they may default on their payment obligations. These risks are heightened during periods of global or industry-specific economic downturn or uncertainty and during periods of rising interest rates. Our liquidity and cash flows from operations may be adversely affected if we are unable to settle our accounts receivable on a timely basis, if our accounts receivable cycles or collection periods lengthen or if we encounter a material increase in defaults of payment of our accounts receivable or repayments of amounts we have extended to our customers on credit.

If our estimates or judgments relating to our critical accounting policies prove to be incorrect, our results of operations could be adversely affected.

The preparation of our financial statements requires us to make estimates and assumptions affecting the reported amounts of our assets, liabilities, revenues, expenses and earnings. If these estimates or assumptions are incorrect, it could have a material adverse effect on our results of operations or financial condition. We have identified several accounting policies as being critical to the fair presentation of our financial condition and results of operations because they involve major aspects of our business and require us to make judgments about

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matters that are inherently uncertain. These policies are described under the section entitled “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and should be considered in conjunction with our audited consolidated financial statements and notes thereto included elsewhere in this prospectus. The implementation of new accounting requirements or other changes to GAAP, could have a material adverse effect on our reported results of operations and financial condition. Our results of operations may be adversely affected if our assumptions change or if actual circumstances differ from those in our assumptions, which could cause our results of operations to fall below our expectations and the expectations of securities analysts and investors, resulting in a decline in the trading price of our common stock.

Risks Related to this Offering and Ownership of Our Securities

You will experience immediate and substantial dilution as a result of this offering.

You will incur immediate and substantial dilution as a result of this offering. Based on the assumed public offering price of $     per share, which is the last reported sales price of our common stock on the NYSE on     , 2024, and accompanying common warrant (and assuming no sale of any pre-funded warrants, no exercise of the common warrants being offered in this offering and that the common warrants are classified as and accounted for as equity), purchasers of common stock (or pre-funded warrants in lieu of common stock) and common warrants in this offering will experience immediate dilution of $     per share in net tangible book value of the common stock. Moreover, in the past, we issued options and warrants to acquire common stock at prices significantly below the public offering price. To the extent these outstanding options and warrants are ultimately exercised, investors purchasing securities in this offering will sustain further dilution. In addition, the Notes are convertible into shares of our common stock upon the terms and conditions set forth in the Amended Note Purchase Agreement based on a conversion rate of 617.2840 shares of common stock per $1,000 principal amount of Notes (equivalent to a conversion price of approximately $1.62 per share). Further, as of November 29, 2024, we had up to $99.5 million in shares available for issuance and sale under a ChEF Purchase Agreement, dated as of December 18, 2023, with Chardan Capital Markets LLC (the “Purchase Agreement”). Sales under the Purchase Agreement are subject to a remaining cap of 9,039,534 shares, based on 19.99% of our outstanding shares of common stock on the execution date of the Purchase Agreement, unless approved by stockholders or individual issuances are considered above market under the rules of the NYSE. See the section entitled “Dilution” for a more detailed description of the dilution to new investors in the offering.

There is no established public market for the pre-funded warrants or common warrants being offered in this offering.

There is no established public trading market for the pre-funded warrants or common warrants being offered in this offering, and we cannot predict the extent to which investor interest in Allurion will lead to the development of an active trading market in our pre-funded warrants or common warrants or how liquid that market might become. Without an active market, the liquidity of the pre-funded warrants or common warrants will be limited. We do not intend to list the pre-funded warrants or common warrants on the NYSE or any national securities exchange or nationally recognized trading system.

Holders of pre-funded warrants or common warrants purchased in this offering will have no rights as common stockholders until such holders exercise their pre-funded warrants or common warrants and acquire our common stock.

Until holders of pre-funded warrants or common warrants acquire shares of our common stock upon exercise thereof, holders of pre-funded warrants or warrants will have no rights with respect to the shares of our common stock underlying such warrants. Upon exercise of the pre-funded warrants or common warrants, the holders will be entitled to exercise the rights of a common stockholder only as to matters for which the record date occurs after the exercise date.

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The common warrants may never be in the money, and they may expire worthless.

We may receive up to an aggregate of approximately $     million from the cash exercise of the common warrants we are offering. The exercise price of each of the common warrants is $     per warrant. However, the last reported sale price of our common stock on the NYSE on     , 2024 was $    . The likelihood that holders of common warrants will exercise their warrants, and therefore any amount of cash proceeds that we may receive, is dependent upon the trading price of our common stock. If the trading price for our common stock continues to be less than $     per share, we do not expect holders to exercise their common warrants. There is no guarantee that the common warrants will be in the money prior to their expiration and, as such, the common warrants may expire worthless.

We will have broad discretion in how we use the proceeds of this offering and may not use these proceeds effectively, which could affect our results of operations and cause our stock price to decline.

We will have considerable discretion in the application of the net proceeds of this offering, including for any of the purposes described in the section entitled “Use of Proceeds,” and you will not have the opportunity as part of your investment decision to assess whether the net proceeds are being used appropriately. As a result, investors will be relying upon management’s judgment with only limited information about our specific intentions for the use of the net proceeds of this offering. We may use the net proceeds for purposes that do not yield a significant return or any return at all for our stockholders. In addition, pending their use, we may invest the net proceeds from this offering in a manner that does not produce income or that loses value.

This is a best efforts offering, no minimum amount of securities is required to be sold, and we may not raise the amount of capital we believe is required for our business plans, including our near-term business plans.

There is no required minimum number of securities or dollar amount that must be sold as a condition to completion of this offering. Because there is no minimum offering amount required as a condition to the closing of this offering, the actual offering amount and proceeds to us are not presently determinable and may be substantially less than the maximum amount set forth above. We may sell fewer than all of the securities offered hereby, which may significantly reduce the amount of proceeds received by us, and investors in this offering will not receive a refund in the event that we do not sell an amount of securities sufficient to support our continued operations, including our near-term continued operations. Thus, we may not raise the amount of capital we believe is required for our operations in the short-term and may need to raise additional funds, which may not be available or available on terms acceptable to us.

Purchasers who purchase our securities in this offering pursuant to a securities purchase agreement may have rights not available to purchasers that purchase without the benefit of a securities purchase agreement.

In addition to rights and remedies available to all purchasers in this offering under federal and state securities law, the purchasers that enter into a securities purchase agreement will also be able to bring claims of breach of contract against us. The ability to pursue a claim for breach of contract provides those investors with the means to enforce the covenants uniquely available to them under the securities purchase agreement including, but not limited to: (i) timely delivery of shares; (ii) agreement to not issue any shares or securities convertible into shares for a period of ninety days from closing of the offering, subject to certain exceptions; and (iii) indemnification for breach of contract.

Our share price may be volatile, and purchasers of our securities could incur substantial losses.

Our share price is likely to be volatile. The securities markets in general, and the market for biotechnology and medical device companies in particular, have experienced extreme volatility that has often been unrelated to the operating performance of particular companies. You may not be able to resell your shares at an attractive price due to a number of factors, including the following:

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These broad market and industry factors may harm the market price of our securities, regardless of our operating performance. Stock markets in general and our stock price in particular have experienced extreme price and volume fluctuations that have often been unrelated or disproportionate to the operating performance of those companies and our Company. For example, from January 1, 2024 to December 1, 2024, the closing price per share of our common stock on the NYSE ranged from as low as $0.3430 to as high as $3.70 and daily trading volume ranged from approximately 3,914 to 63,488,900 shares. During such period, we did not experience any material changes in our financial condition or results of operations that would explain such price volatility or trading volume. Investors that purchase shares of our common stock in this offering may lose their investments if the price of our common stock subsequently declines. In the past, following periods of volatility in the market, securities class-action litigation has often been instituted against companies. Such litigation, if instituted against us, could result in substantial costs and diversion of management’s attention and resources, which could adversely affect our business, financial condition, results of operations and growth prospects.

We do not intend to pay cash dividends for the foreseeable future.

We currently intend to retain our future earnings, if any, to finance the further development and expansion of our business and do not intend to pay cash dividends in the foreseeable future. Any future determination to pay dividends will be at the discretion of our board of directors and will depend on our financial condition, results of operations, capital requirements, restrictions contained in our current or future credit agreements and financing instruments, business prospects and such other factors as our board of directors deems relevant.

Future sales of our common stock, or the perception that future sales may occur, may cause the market price of our common stock to decline, regardless of our operating performance.

Sales of a substantial number of shares of our common stock in the public market, including the resale of shares held by various holders of our securities registered for resale, could occur at any time (after the expiration of any applicable lock-up period). These sales, or the perception in the market that the holders of a large number of shares of our common stock intend to sell shares, could increase the volatility of the market price of our common stock or result in a significant decline in the public trading price of our common stock.

In addition, on December 18, 2023, we entered into the Purchase Agreement with Chardan Capital Markets (“Chardan”) related to a “ChEF,” Chardan’s committed equity facility (the “Chardan Equity Facility”). Pursuant to the Purchase Agreement, Chardan shall purchase from us up to $100.0 million of shares of our common stock, upon the terms and subject to the conditions and limitations set forth in the Purchase Agreement. As of September 30, 2024, we have sold 143,234 shares of our Common Stock to Chardan as Purchase Shares (as defined in the Chardan Purchase Agreement) under the Chardan Purchase Agreement, for aggregate net cash proceeds to us of approximately $0.4 million. Additional shares of our common stock under the Purchase Agreement may be sold by us to Chardan at our discretion from time to time. Sales of shares of our common stock under the Purchase Agreement in the future may cause the trading price of shares of our common stock to decrease.

The resale, or expected or potential resale, of a substantial number of shares of our common stock in the public market could adversely affect the market price for our common stock and make it more difficult for stockholders to sell their holdings at times and prices that they determine are appropriate. Furthermore, we expect that, because there is a large number of shares of our common stock registered pursuant to various resale registration statements, the selling securityholders thereunder will continue to offer the securities covered thereby for a significant period of time, the precise duration of which cannot be predicted. Accordingly, the adverse market and price pressures resulting from an offering pursuant to the effective resale registration statements may continue for an extended period of time. Sales of a substantial number of such shares in the public market could adversely affect the market price of our common stock.

Additionally, a significant portion of the shares of our common stock registered for resale were purchased by securityholders pursuant to investments in Legacy Allurion that date from 2013 onwards at prices

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considerably below the current market price of our common stock. The sale of such shares would result in the securityholders realizing a significant gain even if other securityholders experience a negative rate of return. For example, holders of Legacy Allurion common stock, many of whom purchased their shares pursuant to investments in Legacy Allurion that date from 2013 through the closing of the Business Combination, paid, on average, an effective purchase price of approximately $0.22 for each share of our common stock they received in connection with the Business Combination. Even if our trading price is significantly below $7.04, the offering price for the units offered in Compute Health’s initial public offering (“IPO”) after giving effect to the applicable exchange ratio of 1.420455 pursuant to the Business Combination Agreement (the “CPUH Exchange Ratio”), certain of the securityholders, including such holders of Legacy Allurion common stock, may still have an incentive to sell shares of our common stock because they purchased the shares at prices lower than the public investors or the current trading price of our common stock. For example, based on the closing price of our common stock of $0.61 as of September 30, 2024, such holders of Legacy Allurion common stock would experience a potential profit, on average, of up to approximately $0.39 per share, or approximately $2.1 million in the aggregate upon the sale of all such shares.

Future sales and issuances of our common stock could result in additional dilution of the percentage ownership of our stockholders and could cause our share price to fall.

Significant additional capital will be needed in the future to continue our planned operations. To raise capital, we may sell common stock, convertible securities or other equity securities in one or more transactions at prices and in a manner as determined from time to time. If we sell common stock, convertible securities or other equity securities, investors may be materially diluted by subsequent sales. Such sales may also result in material dilution to existing stockholders, and new investors could gain rights, preferences and privileges senior to the holders of our common stock.

We will incur increased costs and demands upon management as a result of complying with the laws and regulations affecting public companies, which could adversely affect our business, results of operations, and financial condition.

As a public company, we are subject to the reporting requirements of the Exchange Act, the listing standards of the NYSE, and other applicable securities rules and regulations. We expect that the requirements of these rules and regulations will continue to increase our legal, accounting and financial compliance costs, make some activities more difficult, time-consuming and costly, and place significant strain on our personnel, systems and resources. For example, the Exchange Act requires, among other things, that we file annual, quarterly and current reports with respect to our business and results of operations. As a result of the complexity involved in complying with the rules and regulations applicable to public companies, our management’s attention may be diverted from other business concerns, which could harm our business, results of operations and financial condition. Although we have already hired additional employees to assist us in complying with these requirements, we may need to hire more employees in the future or engage outside consultants, which will increase our operating expenses.

In addition, changing laws, regulations and standards relating to corporate governance and public disclosure are creating uncertainty for public companies, increasing legal and financial compliance costs, and making some activities more time-consuming. These laws, regulations and standards are subject to varying interpretations, in many cases due to their lack of specificity, and, as a result, their application in practice may evolve over time as new guidance is provided by regulatory and governing bodies. This could result in continuing uncertainty regarding compliance matters and higher costs necessitated by ongoing revisions to disclosure and governance practices. We intend to invest substantial resources to comply with evolving laws, regulations and standards, and this investment may result in increased general and administrative expenses and a diversion of management’s time and attention from business operations to compliance activities. If our efforts to comply with new laws, regulations and standards differ from the activities intended by regulatory or governing bodies due to ambiguities related to their application and practice, regulatory authorities may initiate legal proceedings against us and our business may be harmed.

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We also expect that being a public company and these new rules and regulations will make it more expensive for us to obtain director and officer liability insurance, and we may be required to accept reduced coverage or incur substantially higher costs to obtain coverage. These factors could also make it more difficult for us to attract and retain qualified members of our board of directors, particularly to serve on our audit committee and compensation committee, and qualified executive officers.

As a result of disclosure of information in the filings required of a public company, our business and financial condition will become more visible, which may result in an increased risk of threatened or actual litigation, including by competitors and other third parties. If such claims are successful, our business and results of operations could be harmed, and even if the claims do not result in litigation or are resolved in our favor, these claims, and the time and resources necessary to resolve them, could divert the resources of our management and harm our business, results of operations, and financial condition.

Certain parties have the right to nominate directors to our board of directors, and their interests may conflict with ours or yours in the future.

Pursuant to our Investor Rights and Lock-up Agreement, dated August 1, 2023, by and among us, Compute Health Sponsor LLC (the “Sponsor”), certain Legacy Allurion stockholders and certain other parties (the “Investor Rights Agreement”), the following persons have the following nomination rights with respect to our board of directors: (i) one director and one independent director to be nominated by Shantanu Gaur; (ii) one director and one independent director to be nominated by Remus Group Management, LLC and its affiliates (“Remus Capital”); (iii) one director to be nominated by the Sponsor; and (iv) two independent directors to be nominated by Allurion (one of whom shall be designated by RTW until such time as all obligations under the Revenue Interest Financing Agreement or any additional revenue interest financing agreement have been satisfied by Allurion).

In addition, in September 2024, we appointed Keith Johns to our Board, in satisfaction of certain obligations to RTW set forth in the Amended Note Purchase Agreement

As a result of the foregoing, Shantanu Gaur, Remus Capital, the Sponsor and RTW or their respective nominees to our Board collectively have the ability to control the appointment of our management, the entering into of mergers, sales of substantially all or all of our assets and other extraordinary transactions, and influence amendments to our amended and restated certificate of incorporation (“Charter”) and bylaws (“Bylaws”). In any of these matters, the interests of the parties to the Investor Rights Agreement with the right to nominate directors may differ from or conflict with your interests.

Moreover, this control over the nomination of directors to our Board may also adversely affect the trading price for our common stock to the extent investors perceive disadvantages in owning stock of a company with these corporate governance provisions.

We are an “emerging growth company” and a “smaller reporting company” within the meaning of the Securities Act, and we intend to take advantage of certain exemptions from disclosure requirements available to emerging growth companies and/or smaller reporting companies, which could make our securities less attractive to investors and may make it more difficult to compare our performance with that of other public companies.

We are “emerging growth company,” as defined in Section 2(a) of the Securities Act, as modified by the Jumpstart Our Business Startups Act of 2012 (“JOBS Act”), and we may take advantage of certain exemptions from various reporting requirements that are applicable to other public companies that are not emerging growth companies, including, but not limited to, not being required to comply with the auditor attestation requirements of Section 404 of the Sarbanes-Oxley Act (“Section 404”), reduced disclosure obligations regarding executive compensation in their periodic reports and proxy statements, and exemptions from the requirements of holding a non-binding advisory vote on executive compensation and stockholder approval of any golden parachute payments not previously approved.

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Further, Section 102(b)(1) of the JOBS Act exempts emerging growth companies from being required to comply with new or revised financial accounting standards until private companies (that is, those that have not had a registration statement under the Securities Act declared effective or do not have a class of securities registered under the Exchange Act) are required to comply with the new or revised financial accounting standards. The JOBS Act provides that a company can elect to opt out of the extended transition period and comply with the requirements that apply to non-emerging growth companies but any such election to opt out is irrevocable. We have elected not to opt out of such extended transition period, which means that when a standard is issued or revised and it has different application dates for public or private companies, we, as an emerging growth company, can adopt the new or revised standard at the time private companies adopt the new or revised standard. This may make comparability of our financial statements with another public company which is neither an emerging growth company nor an emerging growth company which has opted out of using the extended transition period difficult or impossible because of the potential differences in accounting standards used.

Additionally, we are a “smaller reporting company” as defined in Item 10(f)(1) of Regulation S-K, which allows us to take advantage of certain exemptions from disclosure requirements including exemption from compliance with the auditor attestation requirements of Section 404 and reduced disclosure obligations regarding executive compensation in this prospectus and in our periodic reports and proxy statements. We will remain a smaller reporting company until the last day of the fiscal year in which (i) the market value of the shares of our common stock held by non-affiliates exceeds $250 million as of the prior June 30, and (ii) our annual revenue exceeded $100 million during such completed fiscal year or the market value of the shares of our common stock held by non-affiliates exceeds $700 million as of the prior June 30. To the extent we take advantage of such reduced disclosure obligations, it may also make comparison of our financial statements with other public companies difficult or impossible.

We could be subject to securities class action litigation.

In the past, securities class action litigation has often been instituted against companies whose securities have experienced periods of volatility in market price. Securities litigation brought against us following volatility in the price of our common stock, regardless of the merit or ultimate results of such litigation, could result in substantial costs, which would hurt our financial condition and results of operations and divert management’s attention and resources from our business.

We have previously identified material weaknesses in our internal control over financial reporting and may identify additional material weaknesses in the future. If we fail to remediate a material weakness or if we otherwise fail to establish and maintain effective control over financial reporting, it may adversely affect our ability to accurately and timely report our financial results, and may adversely affect investor confidence and business operations.

A material weakness is a deficiency, or a combination of deficiencies, in internal control over financial reporting, such that there is a reasonable possibility that a material misstatement of our annual or interim financial statements will not be prevented or detected on a timely basis.

In connection with the audit of our consolidated financial statements as of and for the years ended December 31, 2023 and 2022, we identified material weaknesses in our internal control over financial reporting that we are currently working to remediate, which relate to: (a) insufficient segregation of duties in the financial statement close process; (b) a lack of sufficient levels of staff with public company and technical accounting experience to maintain proper control activities and perform risk assessment and monitoring activities; and (c) insufficient information systems controls, including access and change management controls. We have concluded that these material weaknesses in our internal control over financial reporting occurred because we do not have the necessary business processes, personnel and related internal controls to operate in a manner to satisfy the accounting and financial reporting timeline requirements of a public company.

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We are focused on designing and implementing effective internal controls measures to improve our evaluation of disclosure controls and procedures, including internal control over financial reporting, and remediating the material weaknesses. We have taken steps to remediate including consulting with experts on technical accounting matters and in the preparation of our financial statements. We have also hired additional senior level experienced staff with public company experience and upgraded our enterprise resource planning system to SAP in August of 2022.

However, we cannot assure you that the measures we are taking to remediate the material weaknesses will prevent or avoid potential future material weaknesses. Further, additional weaknesses in our disclosure controls and internal controls over financial reporting may be discovered in the future. Any failure to develop or maintain effective controls or any difficulties encountered in their implementation or improvement could limit our ability to prevent or detect a misstatement of our accounts or disclosures that could result in a material misstatement of our annual or interim financial statements. In such a case, we may be unable to maintain compliance with securities law requirements regarding timely filing of periodic reports in addition to the listing requirements of the NYSE, investors may lose confidence in our financial reporting and our stock price may decline as a result.

If we are unable to implement and maintain effective internal control over financial reporting in the future, investors may lose confidence in the accuracy and completeness of our financial reports and the market price of our common stock may decrease.

We are in the process of designing and implementing our internal controls over financial reporting, which will be time-consuming, costly and complicated. We have identified gaps in our internal control environment in the past and cannot provide assurances that there will not be material weaknesses or significant deficiencies in our internal control over financial reporting in the future. If we identify additional material weaknesses in our internal control over financial reporting, if we are unable to comply with the requirements of Section 404 in a timely manner, if we are unable to assert that our internal control over financial reporting is effective or, once required, if our independent registered public accounting firm is unable to attest that our internal control over financial reporting is effective, investors may lose confidence in the accuracy and completeness of our financial reports and the market price of our common stock could decrease. We could also become subject to stockholder or other third-party litigation as well as investigations by the NYSE, the SEC or other regulatory authorities, which could require additional financial and management resources and could result in fines, trading suspensions or other remedies.

We will need to raise additional capital in order to execute our business plan and to respond to changing market conditions, which additional capital may not be available on terms acceptable to us, or at all.

We will need to raise additional capital by issuing equity, debt, or a combination of the two, in order to respond to market timing delays, technological advancements, competition, competitive technologies, customer demands, business opportunities, potential acquisitions, unforeseen circumstances, or other reasons. In order to further business relationships with current or potential customers or partners, we may issue equity or equity-linked securities to such customers or partners. Despite the need for additional capital, we may not be able to timely secure additional debt or equity financing on favorable terms, or at all, especially given current market conditions where raising additional capital has proven particularly challenging. If we raise additional capital through the issuance of equity or convertible debt or other equity-linked securities, or if we issue equity or equity-linked securities to current or potential customers to further our business relationships, our existing stockholders would likely experience dilution, which may be significant. Any debt financing obtained by us in the future could involve restrictive covenants relating to our capital raising activities and other financial and operational matters, which may make it more difficult for us to obtain additional capital or to pursue business opportunities, including potential acquisitions. If we are unable to obtain adequate financing on terms satisfactory to us, when we require it, our ability to continue to support our business and to respond to business challenges could be significantly limited.

Additionally, under current SEC regulations, if our public float is less than $75 million, and for so long as our public float remains less than $75 million, the amount we can raise through primary public offerings of securities in any twelve-month period using shelf registration statements on Form S-3 is limited to an aggregate of one-third of our public float, which is referred to as the “baby shelf” rules.

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As of the date of this prospectus, our public float is below $75 million. As such, we will be limited by the baby shelf rules until such time as our public float exceeds $75 million, which means we only have the capacity to sell shares up to one-third of our public float under shelf registration statements on Form S-3 in any twelve-month period. If our public float decreases, the number of securities we may sell under our Form S-3 shelf registration statement will also decrease. We will remain constrained by the baby shelf rules under our Form S-3 shelf registration statement until such time as our public float exceeds $75 million, at which time, the number of securities we may sell under a Form S-3 registration statement will no longer be limited by the baby shelf rules.

We are not in compliance with the NYSE’s minimum share price requirement or its minimum market capitalization standard and thus are at risk of the NYSE delisting shares of our common stock, which would have an adverse impact on the trading volume, liquidity and market price of shares of our common stock.

On August 12, 2024, we received a letter from NYSE notifying us that, as of August 8, 2024, for the last 30 consecutive business days, the average closing price of our common stock had closed below $1.00 per share, the minimum average closing bid price required by the continued listing requirements of Rule 802.01C of the NYSE Listed Company Manual. Pursuant to Rule 802.01C of the NYSE Listed Company Manual, a company will be considered to be below compliance standards if the average closing price of a security fell below $1.00 over a period of 30 consecutive trading days. A company can regain compliance with the minimum share price requirement at any time during the six-month cure period if, on the last trading day of any calendar month during the cure period, the company has (i) a closing share price of at least $1.00 and (ii) an average closing share price of at least $1.00 over the 30 trading-day period ending on the last trading day of that month. In the event that at the expiration of the six-month cure period, both a $1.00 closing share price on the last trading day of the cure period and a $1.00 average closing share price over the 30 trading-day period ending on the last trading day of the cure period are not attained, the NYSE will commence suspension and delisting procedures. We intend to monitor the closing bid price of our common stock and may, if appropriate, consider available options to regain compliance with the NYSE minimum share price requirement. On November 8, 2024, we filed a definitive proxy statement on Schedule 14A for our 2024 annual stockholder meeting (the “2024 Proxy Statement’) and included a proposal for stockholders to consider and vote upon an amendment to our Charter to combine the outstanding shares of common stock into a lesser number of outstanding shares (the “Reverse Stock Split”). Our primary objective in effectuating the Reverse Stock Split is to raise the trading price of our common stock to meet the NYSE’s minimum average closing bid price required by the continued listing requirements of Rule 802.01C of the NYSE Listed Company Manual.

On August 29, 2024, we received a notice from the NYSE notifying us that as of August 29, 2024, we are not in compliance with the continued listing standard set forth in Section 802.01B of the NYSE’s Listed Company Manual (the “Minimum Market Capitalization Standard”) because our average market capitalization was less than $50.0 million over the consecutive 30 trading-day period ended August 29, 2024 and our last reported stockholders’ equity as of August 29, 2024 was less than $50.0 million. In accordance with applicable NYSE procedures, within 45 days of receipt of the notice, we submitted a plan to the NYSE advising it of outlining measures that would bring us into conformity with the Minimum Market Capitalization Standard within 18 months of receipt of the notice (the “Cure Period”). The NYSE will evaluate the plan and determine whether the Company has made a reasonable demonstration of its ability to come into conformity with the relevant listing standards within the Cure Period. If the NYSE accepts our plan, the NYSE will review us on a quarterly basis to confirm compliance with the plan. If our plan is not accepted, we fail to comply with the plan or we do not meet the Minimum Market Capitalization Standard at the end of the Cure Period, we will be subject to NYSE’s prompt initiation of suspension and delisting procedures. We submitted a business plan to the NYSE demonstrating our ability to regain compliance with the NYSE’s rules. The NYSE has accepted the plan and as a result, we are subject to quarterly monitoring for compliance with the business plan and our common stock will continue to trade on the NYSE during the period, subject to our compliance with other NYSE continued listing requirements.

We cannot assure you that we will be able to cure these deficiencies or comply with other NYSE continued listing standards. A delisting of shares of our common stock from the NYSE could negatively impact us as it

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would likely reduce the liquidity and market price of shares of our common stock, reduce the number of investors willing to hold or acquire shares of our common stock, and negatively impact our ability to access equity markets and obtain financing.

An active trading market may not develop or be sustained.

The market for our securities may be highly volatile or may decline regardless of our operating performance. An active public market for our securities may not develop or be sustained. We cannot predict the extent to which investor interest in Allurion will lead to the development of an active trading market in our common stock or how liquid that market might become. If an active market does not develop or is not sustained, or if we fail to satisfy the continued listing standards of the NYSE for any reason and our securities are delisted, it may be difficult for you to sell your securities at the time you wish to sell them, at a price that is attractive to you, or at all. An inactive trading market may also impair our ability to both raise capital by selling shares of capital stock, attract and motivate employees through equity incentive awards and acquire other companies, products or technologies by using shares of capital stock as consideration.

On August 12, 2024, we received a letter from NYSE notifying us that, as of August 8, 2024, for the last 30 consecutive business days, the average closing price of our common stock had closed below $1.00 per share, the minimum average closing bid price required by the continued listing requirements of Rule 802.01C of the NYSE Listed Company Manual. We cannot assure you that we will be able to cure this deficiency or comply with other NYSE continued listing standards. A delisting of shares of our common stock from the NYSE could negatively impact us as it would likely reduce the liquidity and market price of shares of our common stock.

We submitted a business plan to the NYSE demonstrating our ability to regain compliance with the NYSE’s rules. The NYSE has accepted the plan and as a result, the Company is subject to quarterly monitoring for compliance with the business plan and our common stock will continue to trade on the NYSE during the period, subject to our compliance with other NYSE continued listing requirements.

If securities or industry analysts do not publish research, or publish inaccurate or unfavorable research, about our business, our common stock share price and trading volume could decline.

The trading market for our common stock will depend, in part, on the research and reports that securities or industry analysts publish about us or our business. If few or no securities or industry analysts cover us, the trading price for our common stock would likely be negatively impacted. If one or more of the analysts who cover us downgrade our common stock or publish inaccurate or unfavorable research about our business, our share price would likely decline. In addition, if our operating results fail to meet the forecast of analysts, our share price would likely decline. If one or more of these analysts cease coverage of Allurion or fail to publish reports on us regularly, demand for our common stock could decrease, which might cause our share price and trading volume to decline.

Provisions in our Charter and Bylaws could make an acquisition of Allurion more difficult and may prevent attempts by our stockholders to replace or remove our current management.

Provisions in our Charter and Bylaws may discourage, delay, or prevent a merger, acquisition, or other change in control of us that stockholders may consider favorable, including transactions in which stockholders might otherwise receive a premium for their shares. These provisions could also limit the price that investors might be willing to pay in the future for our common stock, thereby depressing the market price of our common stock. In addition, these provisions may frustrate or prevent any attempts by our stockholders to replace or remove our current management by making it more difficult for stockholders to replace members of our board of directors. Because our board of directors is responsible for appointing the members of our management team, these provisions could in turn affect any attempt by our stockholders to replace current members of our management team. Among others, these provisions include the following:

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Sales of shares of our common stock may cause the market price of our common stock to fall.

Sales of a substantial number of shares of our common stock in the public market could occur at any time. These sales, or the perception in the market that the holders of a large number of shares of our common stock intend to sell shares, could increase the volatility of the market price of our common stock or result in a significant decline in the public trading price of our common stock.

While the Sponsor and certain Legacy Allurion stockholders have signed the Investor Rights Agreement which contains lock-up restrictions for a period of either 18 months or 12 months following the consummation of the Business Combination, as applicable, and certain other Legacy Allurion stockholders are subject to similar lock-up restrictions pursuant to our Bylaws, the lock-up restrictions shall not apply to: (a) any shares of our common stock purchased pursuant to the PIPE Subscription Agreements (as defined below), (b) 100 shares of our common stock held by each Investor (as defined in the Investor Rights Agreement), (c) shares issued to the Sponsor in the loans made by the Sponsor to Compute Health, which balance was $3.7 million at the time of the Business Combination, was converted into 525,568 shares of Allurion common stock (the “Sponsor Loan Equity Issuance”), (d) certain incremental shares of PIPE Investors who are Legacy Allurion stockholders or holders of convertible unsecured promissory notes issued by Legacy Allurion pursuant to that certain (i) Convertible Note Purchase Agreement, dated December 22, 2021, by and among Legacy Allurion and the investors listed on Exhibit A thereto, (ii) Convertible Note Purchase Agreement, dated February 15, 2023, by and among Legacy Allurion and the investors listed on Exhibit A thereto and (iii) Convertible Note Purchase Agreement, dated June 14, 2023, by and among Legacy Allurion and the investors listed on Exhibit A thereto (collectively, “Legacy Allurion Convertible Notes”), or shares issued upon conversion of the convertible notes issued between February 2023 and August 2023 (“2023 Convertible Notes”), (e) the Backstop Shares or the shares of our common stock issued to each of HVL, RTW and Fortress Credit Corp. (“Fortress”), and such shares of our common stock will be freely tradeable subject to federal securities laws and other applicable rules and regulations. In addition, the lock-up restrictions pertaining to this offering described in the section entitled “Plan of Distribution” will expire 90 days from the date of this prospectus.

The effective purchase prices at which certain independent directors of Compute Health, certain Legacy Allurion stockholders, the PIPE Investors, RTW, a Fortress affiliate and HVL acquired their shares of our common stock are generally substantially less than the IPO price of $7.04 per share, after giving effect to the

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CPUH Exchange Ratio. Consequently, such stockholders may realize a positive rate of return on the sale of their shares of common stock even if the market price per share of our common stock is below $7.04 per share. While some of our securityholders may experience a positive rate of return based on the current trading price, public securityholders may not experience a similar rate of return on the securities they purchased due to differences in the purchase prices they paid and the trading price at the time of sale and may instead experience a negative rate of return on their investment. On December 6, 2024, the last quoted sale price for our common stock as reported on the NYSE was $0.37 per share.

Consequently, these securityholders may have an incentive to sell their shares of our common stock even if the trading price is below the price paid by investors in Compute Health’s IPO, which could cause the market price of our common stock to decline.

In addition, on December 18, 2023, we entered into the Purchase Agreement with Chardan related to the Chardan Equity Facility. Pursuant to the Purchase Agreement, Chardan shall purchase from us up to $100.0 million of shares of our common stock, upon the terms and subject to the conditions and limitations set forth in the Purchase Agreement.

The shares of our common stock that may be issued under the Purchase Agreement may be sold by us to Chardan at our discretion from time to time. The purchase price for shares of our common stock that we may sell to Chardan under the Purchase Agreement will fluctuate based on the trading price of shares of our common stock. As a result, investors who purchase shares from Chardan at different times will likely pay different prices for those shares, and so may experience different levels of dilution and in some cases substantial dilution and different outcomes in their investment results. Investors may experience a decline in the value of the shares they purchase from Chardan as a result of future sales made by us to Chardan at prices lower than the prices such investors paid for their shares.

Depending on market liquidity at the time, sales of shares of our common stock may cause the trading price of shares of our common stock to decrease. We generally have the right to control the timing and amount of any future sales of shares of our common stock to Chardan. Additional sales of shares of our common stock, if any, to Chardan will depend upon market conditions and other factors to be determined by us. We may ultimately decide to sell to Chardan all, some or none of the additional shares of our common stock that may be available for us to sell pursuant to the Purchase Agreement. If and when we do sell shares of our common stock to Chardan, after Chardan has acquired shares of our common stock, Chardan may resell all, some or none of such shares of our common stock at any time or from time to time in its discretion. Therefore, sales to Chardan by us could result in substantial dilution to the interests of other holders of shares of our common stock. In addition, if we sell a substantial number of shares of our common stock to Chardan under the Purchase Agreement, or if investors expect that we will do so, the actual sales of shares of our common Stock or the mere existence of our arrangement with Chardan may make it more difficult for us to sell equity or equity-related securities in the future at a time and at a price that we might otherwise wish to effect such sales.

Under applicable NYSE rules, in no event may we issue to Chardan shares of our common stock representing more than the lower of the 19.99% voting power threshold and the 19.99% share and share equivalent thresholds referenced in Section 312.03(c) of the NYSE Listed Company Manual, unless we obtain prior stockholder approval or if such approval is not required in accordance with the applicable NYSE rules. In addition, Chardan is not obligated to buy any common stock under the Purchase Agreement if such shares, when aggregated with all other common stock then beneficially owned by Chardan and its affiliates (as calculated pursuant to Section 13(d) of the Exchange Act and Rule 13d-3 promulgated thereunder), would result in Chardan beneficially owning common stock in excess of 4.99% of our outstanding voting power or shares of common stock.

In April 2024, we entered into the Amended Note Purchase Agreement, pursuant to which we issued and sold $48 million of Notes to the Purchasers. The actual number of shares of our common stock that may be issued upon conversion of the Notes will vary depending on the then-current conversion price of the Notes sold,

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not to exceed 479,196 shares of common stock, or 1% of the number of shares of the common stock outstanding as of April 14, 2024, unless we obtain approval of our stockholders for such securities issuance (the “First Stockholder Approval”), in accordance with the applicable stock exchange rules. Therefore, the Amended Note Purchase Agreement provides that unless and until the requisite First Stockholder Approval is obtained, we will not deliver common stock upon conversion of the Notes in excess of 1% of the number of shares of the common stock outstanding as of April 14, 2024. Under the Amended Note Purchase Agreement, we are required to include a proposal in our definitive proxy statement on Schedule 14A seeking the First Stockholder Approval no later than December 31, 2025. If we do not obtain the First Stockholder Approval at such meeting, we are required to call a special meeting of stockholders each 90-day period thereafter at least two times, and thereafter at each subsequent annual meeting until the First Stockholder Approval is obtained or the Notes are no longer outstanding; provided, that shares of common stock issued upon conversion of the Notes prior to obtaining the First Stockholder Approval shall not be entitled to vote in favor of the First Stockholder Approval.

Also in July 2024, concurrently with the Offering, we consummated the Private Placement of an aggregate of 2,260,159 shares of Series A Preferred Stock and 2,260,159 Private Placement Warrants to RTW, at a purchase price of $1.20 per share and warrant. The actual number of shares of our common stock that may be issued upon conversion of the Series A Preferred Stock and exercise of the Private Placement Warrants shall not exceed 479,683 shares of common stock, or 1% of the number of shares of the common stock outstanding as of June 28, 2024, unless we obtain the approval of our stockholders for such securities issuance (the “Second Stockholder Approval”), in accordance with the applicable stock exchange rules. Following the date upon which we obtain the Second Stockholder Approval for the issuance of the underlying common stock, which we have agreed to obtain as set forth in the Subscription Agreement, each share of Series A Preferred Stock shall automatically convert into one share of common stock (or pre-funded warrants), subject to adjustment; provided, however, that in no event shall the Series A Preferred Stock be converted into a number of shares of common stock exceeding 9.99% of the total number of shares of common stock outstanding. In addition, the Private Placement Warrants are not exercisable prior to the Second Stockholder Approval and thereafter are immediately exercisable at an exercise price of $1.20 and will expire five years from the date of issuance, subject to certain limitations. A holder of Private Placement Warrants may not exercise the Private Placement Warrant if such holder, together with its affiliates, would beneficially own more than 4.99% (or, upon election by a holder prior to the issuance of the Private Placement Warrants, 9.99%) of the number of shares of common stock outstanding immediately after giving effect to such exercise.

On November 8, 2024, we filed the 2024 Proxy Statement for our 2024 annual stockholder meeting and included proposals for the First Stockholder Approval and Second Stockholder Approval.

Other than as described above, there are no lock-up, beneficial ownership or stock exchange restrictions that would prevent the foregoing stockholders from selling some or all of their common stock subject to compliance with applicable rules and regulations.

Our existing warrants are exercisable for common stock, the exercise of which would increase the number of shares eligible for future resale in the public market and result in dilution to our stockholders.

As of September 30, 2024, there were outstanding:

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To the extent such existing warrants are exercised, additional shares of our common stock will be issued, which will result in dilution to the holders of our common stock and increase the number of shares eligible for resale in the public market. Sales of substantial numbers of such shares in the public market could adversely affect the market price of our common stock, the impact of which increases as the value of our stock price increases.

Our pre-funded warrants and common warrants being issued in this offering will be exercisable for common stock, the exercise of which would increase the number of shares eligible for future resale in the public market and result in dilution to our stockholders.

We are offering common warrants to purchase up to      shares of our common stock at an exercise price of $     per share in this offering. We are also offering to each purchaser whose purchase of shares of our common stock in this offering would otherwise result in the purchaser, together with its affiliates and certain related parties, beneficially owning more than 4.99% (or, at the election of the holder, 9.99%) of our outstanding shares of common stock immediately following consummation of this offering, the opportunity to purchase, if the purchaser so chooses, pre-funded warrants to purchase shares of common stock in lieu of shares of common stock. Each pre-funded warrant will be exercisable for one share of our common stock. The purchase price of each pre-funded warrant will equal the price per share of common stock being sold to the public in this offering, minus $0.0001, and the exercise price of each pre-funded warrant will be $0.0001 per share. To the extent such warrants are exercised, additional shares of our common stock will be issued, which will result in dilution to the holders of our common stock and increase the number of shares eligible for resale in the public market. Sales of substantial numbers of such shares in the public market could adversely affect the market price of our common stock, the impact of which increases as the value of our stock price increases.

Our existing warrants may not be exercised at all and we may not receive any cash proceeds from the exercise of such warrants.

Due to the significant number of redemptions of Compute Health Class A common stock in connection with the Business Combination, there was a significantly lower number of shares of Compute Health Class A common stock that converted into shares of our common stock in connection with the Business Combination. As a result, the shares of our common stock previously registered for resale (a substantial portion of which may not be resold until the expiration of the applicable lock-up period) are anticipated to constitute a considerable percentage of our public float. Additionally, a significant portion of the shares of our common stock registered for resale were purchased by securityholders pursuant to investments in Legacy Allurion that date from 2013 through the closing of the Business Combination at prices considerably below the current market price of our common stock. This discrepancy in purchase prices may have an impact on the market perception of our common stock’s value and could increase the volatility of the market price of our common stock or result in a significant decline in the public trading price of our common stock. The registration of these shares for resale creates the possibility of a significant increase in the supply of our common stock in the market. The increased supply, coupled with the potential disparity in purchase prices, may lead to heightened selling pressure, which could negatively affect the public trading price of our common stock.

The exercise prices of the existing warrants, in certain circumstances, may be higher than the prevailing market price of our underlying common stock and the cash proceeds to us associated with the exercise of such warrants are contingent upon our stock price. The value of our common stock may fluctuate and may not exceed the exercise price of the existing warrants at any given time. As of the date of this prospectus, all of our Public Warrants, each of which has an exercise price of $8.10 per share, and July 2024 Public Warrants, each of which has an exercise price of $1.20 per share, are “out of the money,” meaning the exercise price is higher than the market price of our common stock. As of September 30, 2024, 22,303 Rollover Warrants have been exercised. Of the 403,658 Rollover Warrants outstanding as of September 30, 2024, 274,580 of such warrants (55,729 of which have an exercise price of $1.05, 9,779 of which have an exercise price of $1.13, 44,272 of which have an exercise price of $2.43, 130,053 of which have an exercise price of $6.73, and 90,476 of which have an exercise price of $12.14) are “out of the money.” Holders of such “out of the money” warrants are not likely to exercise such warrants. There can be no assurance that such warrants will be in the money prior to their respective expiration dates, and therefore, we may not receive any cash proceeds from the exercise of such warrants.

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Our common warrants may not be exercised at all and we may not receive any cash proceeds from the exercise of such warrants.

The value of our common stock may fluctuate and may not exceed the exercise price of the new warrants offered hereby at any given time. The exercise price of the common warrants, $    , is a     % premium to the closing price of our common stock on the date of this prospectus. Accordingly, such common warrants are currently “out of the money.” Holders of “out of the money” warrants, or warrants for which the exercise price is higher than the market price of our common stock, are not likely to exercise such warrants. There can be no assurance that such warrants will be in the money prior to their respective expiration dates, or that such warrants will be exercised at all and, therefore, we may not receive any cash proceeds from the exercise of such warrants.

Certain of our existing warrants are accounted for as liabilities and the changes in value of such warrants could have a material effect on, or cause volatility in, our financial results.

In connection with the Business Combination, we assumed Public Warrants to purchase up to 18,759,696 shares of our common stock (which were originally issued as warrants to purchase shares of Compute Health Class A common stock in connection with Compute Health’s IPO) and Rollover Warrants to purchase up to 403,658 shares of our common stock (which were originally issued as warrants to purchase shares of Legacy Allurion Common Stock and Legacy Allurion Preferred Stock). We evaluated the accounting treatment of such warrants and determined to classify certain of such warrants as liabilities measured at fair value. The fair value of such warrants is remeasured on a quarterly basis with changes in the estimated fair value recorded in Other (expense) income on the consolidated statement of operations and comprehensive loss. Due to the recurring fair value measurement, we expect that we will recognize non-cash gains or losses on such warrants each reporting period and that the amount of such gains or losses could materially impact or cause volatility in our financial results. For example, upon consummation of the Business Combination, the total value of the liability associated with the Public Warrants was $13.8 million measured at fair value based on the Public Warrant quoted price. However, at September 30, 2024, the fair value of the liability associated with the Public Warrants was determined to be $0.5 million.

Our Earn-Out Shares are accounted for as liabilities and the changes in value of such shares could have a material effect on, or cause volatility in, our financial results.

In connection with the Business Combination, holders of Legacy Allurion common stock and Legacy Allurion preferred stock and holders of vested options, warrants and restricted stock units exercisable or convertible into Legacy Allurion capital stock received the contingent right to receive additional shares of our common stock (the “Earn-Out Shares”) upon the achievement of certain earn-out targets. We evaluated the accounting treatment of our Earn-Out Shares and determined to classify such shares as liabilities measured at fair value. The fair value of such shares is remeasured on a quarterly basis over the earn-out period with changes in the estimated fair value recorded in other income (expense) on the consolidated statement of operations and comprehensive loss. Due to the recurring fair value measurement, we expect that we will recognize non-cash gains or losses on our Earn-Out Shares each reporting period and that the amount of such gains or losses could materially impact or cause volatility in our financial results. For example, upon consummation of the Business Combination, the fair value of the liability associated with the Earn-Out Shares was initially valued and recorded as $53.0 million. However, at September 30, 2024, the fair value of the liability associated with the Earn-Out Shares was determined to be $1.9 million.

The provisions of our Bylaws requiring exclusive forum in the Court of Chancery of the State of Delaware and the federal district courts of the United States for certain types of lawsuits may have the effect of discouraging lawsuits against our directors and officers.

Our Bylaws provide that, to the fullest extent permitted by law, and unless we consent in writing to the selection of an alternative forum, the Court of Chancery (the “Chancery Court”) of the State of Delaware (or, in the event that the Chancery Court does not have jurisdiction, the federal district court for the District of Delaware

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or other state courts of the State of Delaware) and any appellate court thereof will be the sole and exclusive forum for (i) any derivative action or proceeding brought on our behalf, (ii) any action asserting a claim of, or a claim based on, a breach of a fiduciary duty owed by any of our current or former directors, officers, or other employees or stockholders to us or our stockholders, (iii) any action asserting a claim arising pursuant to any provision of the DGCL, our Charter or our Bylaws (including the interpretation, validity or enforceability thereof) or as to which the DGCL confers jurisdiction on the Chancery Court of the State of Delaware, or (iv) any action asserting a claim governed by the internal affairs doctrine; provided, however, that the preceding clauses (i) through (iv) will not apply to any causes of action arising under the Securities Act or the Exchange Act, or to any claim for which the federal courts have exclusive jurisdiction. Any person or entity purchasing or otherwise acquiring any interest in shares of our capital stock shall be deemed to have notice of and to have consented to the provisions of our Bylaws as described above.

Additionally, Section 22 of the Securities Act creates concurrent jurisdiction for federal and state courts over all suits brought to enforce any duty or liability created by the Securities Act or the rules and regulations thereunder. Accordingly, both state and federal courts have jurisdiction to entertain such Securities Act claims. To prevent having to litigate claims in multiple jurisdictions and the threat of inconsistent or contrary rulings by different courts, among other considerations, our Bylaws provide that, unless we consent in writing to the selection of an alternative forum, to the fullest extent permitted by law, the federal district courts of the United States of America shall be the exclusive forum for the resolution of any complaint asserting a cause of action arising under the Securities Act, the Exchange Act, or the respective rules and regulations promulgated thereunder; however, there is uncertainty as to whether a court would enforce such provision, and investors cannot waive compliance with federal securities laws and the rules and regulations thereunder.

These provisions may limit or increase the difficultly in a stockholder’s ability to bring a claim in a judicial forum that it finds favorable for disputes with us or our directors and officers, or may increase the cost for such stockholder to bring a claim, both of which may have the effect of discouraging lawsuits against our directors and officers. The enforceability of similar choice of forum provisions in other companies’ certificates of incorporation has been challenged in legal proceedings, and it is possible that, in connection with any applicable action brought against us, a court could find the choice of forum provisions contained in our Bylaws to be inapplicable or unenforceable in such action. If a court were to find the choice of forum provision inapplicable or unenforceable in an action, we may incur additional costs associated with resolving such action in other jurisdictions, which could harm our business, results of operations, and financial condition.

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USE OF PROCEEDS

We estimate that the net proceeds to us from the issuance and sale of shares of our common stock (or pre-funded warrants in lieu of common stock) and accompanying common or warrants in this offering, as applicable, will be approximately $     million, based on the assumed public offering price of $     per share and accompanying common warrant, which is the last reported sales price of our common stock on the NYSE on    , 2024, assuming no sale of any pre-funded warrants or exercise of any common warrants and after deducting estimated placement agent fees and estimated offering expenses payable by us. However, because this is a best efforts offering and there is no minimum offering amount required as a condition to the closing of this offering, the actual offering amount, and net proceeds to us are not presently determinable and may be substantially less than the maximum amounts set forth on the cover page of this prospectus. If all of the pre-funded warrants or common warrants sold in this offering were to be exercised at their exercise price in cash, we would receive additional gross proceeds of approximately $     million. Based on the assumed public offering price set forth above, we estimate that our net proceeds from the sale of 75%, 50%, and 25% of the securities offered in this offering would be approximately $     million, $     million, and $     million, respectively, assuming no sale of any pre-funded warrants or exercise of any common warrants, and after deducting the estimated placement agent fees and estimated offering expenses payable by us.

We currently intend to use the net proceeds from this offering, together with our existing cash and cash equivalents, to fund commercial sales, research and development, and for working capital and other general corporate purposes.

Based on our current plans, we believe our existing cash and cash equivalents, together with the net proceeds from this offering, will be sufficient to fund our operating expenses and capital expenditure requirements through at least the next 12 months.

Each $1.00 increase (decrease) in the assumed public offering price of $     per share and accompanying common warrant would increase (decrease) the net proceeds to us from this offering by approximately $     million, assuming that the number of shares and accompanying common warrants offered by us, as set forth on the cover page of this prospectus, remains the same, assuming no sale of any pre-funded warrants or exercise of any common warrants and after deducting the estimated placement agent fees and estimated offering expenses payable by us.

Similarly, each 1.0 million share increase (decrease) in the number of shares offered by us, as set forth on the cover page of this prospectus, would increase (decrease) the net proceeds to us by approximately $     million, assuming the public offering price of $     per share and accompanying common warrant, remains the same, and after deducting the estimated placement agent fees and estimated offering expenses payable by us, assuming no sale of any pre-funded warrants or exercise of any common warrants.

These estimates exclude the proceeds, if any, from the exercise of common warrants offered hereby. If all of the common warrants offered hereby were to be exercised in cash at the exercise price, we would receive additional gross proceeds of approximately $     million. We cannot predict when or if these common warrants will be exercised. It is possible that these common warrants may expire and may never be exercised. Additionally, these common warrants contain a cashless exercise provision that permit exercise of such common warrants on a cashless basis at any time when there is no effective registration statement under the Securities Act covering the issuance of the underlying shares.

This expected use of the net proceeds from this offering represents our intentions based upon our current plans and business conditions, which could change in the future as our plans and business conditions evolve. We cannot predict with certainty all the particular uses for the net proceeds to be received upon the completion of this offering or the amounts that we will actually spend on the uses set forth above. The amounts and timing of our actual expenditures may vary significantly depending on numerous factors, including the progress of our

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research and development efforts, the status of and results from clinical trials we may commence in the future, as well as any collaborations that we may enter into with third parties for our product candidates or strategic opportunities that become available to us, and any unforeseen cash needs. As a result, our management will retain broad discretion over the allocation of the net proceeds from this offering.

We may invest the net proceeds from this offering in investment-grade, interest-bearing securities such as money market funds, certificates of deposit, or direct or guaranteed obligations of the U.S. government, or hold as cash. We cannot predict whether any proceeds so invested will yield a favorable return. Our management will retain broad discretion in the application of the net proceeds we receive from this offering, and investors will be relying on the judgment of our management regarding the application of the net proceeds. See the subsection entitled “Risk Factors—Risks Related to This Offering and Ownership of Our Securities—We will have broad discretion in how we use the proceeds of this offering and may not use these proceeds effectively, which could affect our results of operations and cause our stock price to decline.”

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MARKET PRICE AND DIVIDEND INFORMATION

Market Price

Our common stock and Public Warrants are listed on the NYSE under the symbols “ALUR” and “ALUR WS,” respectively.

The closing price of our common stock and our Public Warrants as reported on the NYSE on December 6, 2024 was $0.37 per share and $0.035 per Public Warrant.

Currently, there is no public market for the pre-funded warrants or common warrants offered hereunder. We do not intend to list the pre-funded warrants or common warrants on the NYSE or any other national securities exchange or nationally recognized trading system. We cannot predict the extent to which investor interest in Allurion will lead to the development of an active trading market in such warrants or how liquid that market might become.

Holders

As of December 6, 2024, there were 252 holders of record of our common stock and one holder of record of our Public Warrants. The number of holders of record does not include for example a substantially greater number of “street name” holders or beneficial holders whose shares are held of record by banks, brokers and other financial institutions.

Dividend Policy

We have not paid any cash dividends to date. The payment of cash dividends in the future will be dependent upon our revenues and earnings, if any, capital requirements, and general financial condition. The payment of any cash dividends will be within the discretion of our Board at such time. Our ability to pay dividends may also be restricted by the terms of any future credit agreement, or any of our or our subsidiaries’ future debt, or preferred equity securities. See the subsection entitled “Risk Factors—Risks Related to Our Financial Condition and Capital Requirements—We have a significant amount of debt, which may affect our ability to operate our business and secure additional financing in the future.”

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CAPITALIZATION

The following table sets forth our cash and capitalization as of September 30, 2024 on:

The pro forma information set forth in the table below is illustrative only and will be adjusted based on the actual public offering price and other terms of this offering as determined at pricing.

You should read the following table in conjunction with the section titled “Use of Proceeds” in this prospectus and the section titled “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and our consolidated financial statements and related notes thereto included in this registration statement of which this prospectus forms a part for the three and nine months ended September 30, 2024.

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The number of shares of common stock, pro forma in the table above, is based on an aggregate of 64,369,381 shares of our common stock outstanding as of September 30, 2024 and excludes the following:

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DILUTION

If you invest in our common stock in this offering, your ownership interest will be immediately diluted to the extent of the difference between the public offering price per share of common stock and accompanying common warrant and the pro forma net tangible book value per share of common stock immediately after this offering.

Our historical net tangible book value (deficit) as of September 30, 2024 was $(63.8) million, or $(0.99) per share of common stock. Our historical net tangible book value (deficit) is the amount of our total tangible assets less our total liabilities. Historical net tangible book value per share of common stock represents historical net tangible book value divided by an aggregate of shares of our common stock outstanding as of September 30, 2024.

After giving effect to the issuance and sale of our common stock (or pre-funded warrants in lieu of common stock) and common warrants in this offering at an assumed public offering price of $     per share and accompanying common warrant, which is the last reported sales price of our common stock on the NYSE on     , 2024, assuming no sale of any pre-funded warrants or exercise of any common warrants and after deducting the estimated placement agent fees and estimated offering expenses payable by us, our pro forma net tangible book value as of September 30, 2024 would have been $(    ) million, or $(    ) per share of common stock. This represents an immediate increase in pro forma net tangible book value per share of $     to existing stockholders and immediate dilution of $     in pro forma net tangible book value per share to new investors purchasing shares of common stock (or pre-funded warrants in lieu of common stock) and accompanying common warrants in this offering. Dilution per share to new investors is determined by subtracting pro forma net tangible book value per share of common stock after this offering from the assumed public offering price per share and accompanying common warrant paid by new investors. The following table illustrates this dilution on a per share basis:

The dilution information discussed above is illustrative only and will change based on the actual public offering price and other terms of this offering determined at pricing.

Each $1.00 increase in the assumed public offering price of $     per share and accompanying common warrant would increase our pro forma net tangible book value per share after this offering by $     and dilution per share to new investors purchasing shares of common stock in this offering by $    , assuming that the number of shares offered by us, as set forth on the cover page of this prospectus, remains the same, that no exercise of any common warrants issued in this offering, and after deducting the estimated placement agent fees and estimated offering expenses payable by us.

Each $1.00 decrease in the assumed public offering price of $     would decrease our pro forma net tangible book value per share after this offering by $     and dilution per share to new investors purchasing shares of common stock in this offering by $(    ), assuming that the number of shares offered by us, as set forth on the cover page of this prospectus, remains the same, assuming no sale of any pre-funded warrants or exercise of any common warrants and after deducting the estimated placement agent fees and estimated offering expenses payable by us.

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An increase of 1,000,000 shares in the number of shares offered by us, as set forth on the cover page of this prospectus, would increase our pro forma net tangible book value per share after this offering by $     and decrease the dilution per share to new investors purchasing shares of common stock and accompanying common warrants in this offering by $(    ), assuming no change in the assumed public offering price per share and accompanying common warrant, no sale of any pre-funded warrants or exercise of any common warrants and after deducting the estimated placement agent fees and estimated offering expenses payable by us.

A decrease of 1,000,000 shares in the number of shares offered by us, as set forth on the cover page of this prospectus, would decrease our pro forma net tangible book value per share after this offering by $(    ) and increase the dilution per share to new investors purchasing shares of common stock (or pre-funded warrants in lieu of common stock) and accompanying common warrants in this offering by $    , assuming no change in the assumed public offering price per share and accompanying common warrant, no sale of any pre-funded warrants or exercise of any common warrants, and after deducting the estimated placement agent fees and estimated offering expenses payable by us.

The foregoing tables and calculations (other than the historical net tangible book value calculation) are based on an aggregate of 64,369,381 shares of our common stock outstanding as of September 30, 2024 and excludes the following:

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BUSINESS

Unless the context otherwise requires, all references in this section to the “company,” “we,” “us,” or “our” refer to the business of Legacy Allurion and its subsidiaries prior to the consummation of the Business Combination and to Allurion (formerly known as Allurion Technologies Holdings, Inc.) and its subsidiaries after giving effect to the Business Combination.

Overview

Our company is dedicated to ending obesity by creating a best-in-class weight loss platform to treat the estimated two billion people globally who are overweight. Our platform, the Allurion Program (the “Allurion Program”), features the world’s first and only swallowable, Procedureless^TM intragastric balloon for weight loss (the “Allurion Balloon”) and offers access to artificial intelligence (“AI”)-powered remote patient monitoring tools, a behavior change program, secure messaging and video telehealth that are delivered by the Allurion Virtual Care Suite (“VCS”). Over 150,000 patients have already been treated commercially with the Allurion Balloon in over 50 countries outside of the United States.

The Allurion Balloon is swallowed as a capsule under the guidance of a health care provider without surgery, endoscopy, or anesthesia. The placement takes approximately 15 minutes during an outpatient visit (though times may vary across different outpatient offices). We believe the proprietary technologies that differentiate the Allurion Balloon enable improved safety and efficacy outcomes. In a prospective, non-randomized, open-label, registry trial, the Allurion Balloon demonstrated significant weight loss and low device- or procedure-related rates of serious adverse events, both of which results we believe compare favorably to that of our competitors.

The VCS is comprised of the following tools to support patients’ weight loss experience, which we believe benefit both patients and health care providers:

In addition to its use by Allurion Balloon patients, we believe the VCS can potentially be a platform for optimal long-term follow-up after other medical and surgical weight loss interventions in the future.

For example, VCS includes a Treatment Tracking and Clinic-Led Onboarding feature that enables seamless onboarding and management of patients undergoing one or multiple weight loss treatments, including gastric balloons such as the Allurion Balloon, surgery, or medications. In addition, in connection with our collaboration with Medtronic plc, we expect to develop bundled offerings that incorporate the VCS to onboard and manage Medtronic’s patients. Further, in April 2024, we launched the VCS in the United States for patients utilizing other weight loss treatments, including anti-obesity medications and bariatric surgery.

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In November 2024, we launched AllurionMeds, a unique offering to patients that combines affordable and accessible weight loss medications with our AI-native platform to promote long-term weight maintenance, virtual access to dieticians and the Allurion Connected Scale that measures not just weight but muscle and bone mass.

In November 2021, the U.S. Food and Drug Administration (“FDA”) approved the investigational device exemption (the “IDE”), for our AUDACITY trial, a 48-week, prospective, randomized, open-label trial, in the United States. Enrollment in the AUDACITY trial is complete, with 550 patients in the trial across 17 sites in the United States, the first of which was treated in July 2022. The results of the trial are expected by year-end 2024, and, if positive, are expected to support a premarket approval (the “PMA”) to the FDA.

We have assembled a broad portfolio of intellectual property related to our medical device, the Allurion Balloon, and our supporting technology platform, the VCS. We believe this intellectual property, combined with proprietary manufacturing processes and the regulatory approvals we have successfully obtained outside of the United States, provides us with a strong market position. As of November 29, 2024, we owned or had rights to 19 issued and five pending patents in the United States related to various aspects of our Allurion Balloon such as a swallowable, self-deflating and naturally passing gastric balloon, improvements to the fill and release valves therein, methods for deploying and releasing a gastric balloon within the body, and next generation fill and release valves. In addition, as of November 29, 2024, we had 39 issued and five patents pending outside of the United States. We intend to continue to expand our intellectual property portfolio and invest in protecting new innovations.

To date, most of our revenues have been generated from sales of the Allurion Balloon. We began selling the Allurion Balloon in Europe in January 2016 and to date have launched in over 50 countries outside of the United States. We currently sell our products either via our direct sales force or, in certain countries, distributors.

Our Market Opportunity

According to the World Health Organization (“WHO”), over two billion people around the world are overweight and by 2030, one billion people globally will have obesity, defined as a body mass index (“BMI”) of 30 or greater. Likewise, according to WHO, the number of obese adults worldwide has nearly tripled since 1975. The global obesity treatment market is expected to be $54 billion by 2030.

Moreover, according to WHO, obesity is the leading cause of chronic diseases worldwide and leads to a higher risk of cardiovascular disease, type 2 diabetes, infertility, liver disease, and certain cancers. According to McKinsey, the annual global economic impact of obesity is estimated to be over $2 trillion.

We expect the rates of obesity to rise globally as access to calorie-rich foods increases and lifestyles become increasingly sedentary, especially among adolescents. According to WHO, the prevalence of obesity in children and adolescents has increased 10-fold in the past four decades and will fuel higher rates of adult obesity in the decades to come.

Despite the significant medical and economic burden that obesity poses, there remains a significant unmet need for safer, more effective, and more consumer-centric treatments.

Based on a market research study we conducted with 9,800 consumers in eight countries, where we assessed each participant’s weight, income level, and interest in various weight loss alternatives, we estimate that 4.3% of the population eligible for the Allurion Balloon and interested in treatment would consider the Allurion Program as a treatment for obesity. Furthermore, based on our market research, we estimate that 3% of the adult U.S. population, or approximately 10 million adults, would consider the Allurion Program as a weight loss treatment. We believe this is an $18 billion total addressable market in the United States.

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Current Therapeutic Interventions Used in Weight Loss

Current treatment alternatives for patients who are obese and overweight begin with lifestyle modification, such as diet and exercise. If this course of treatment fails to produce the desired results, as is often the case, physicians may prescribe pharmaceutical therapies, and in patients with more severe obesity, physicians may pursue aggressive bariatric surgical treatments, such as gastric bypass and sleeve gastrectomy. These approaches are associated with concerns around safety, permanence, lifestyle impact, ease of use, cost and compliance issues, as well as the significant weight re-gain associated with such approaches that have limited their adoption.

Lifestyle Modification

Lifestyle modification, which includes diet, exercise and behavior modification delivered either in-person or digitally, is usually prescribed as an initial treatment for a patient who is obese or overweight. However, lifestyle modification alone has generally been ineffective in producing sustainable weight loss in patients with obesity due to poor adherence over an extended period. Many studies have shown that a significant majority of dieters will regain lost weight and many will gain more than they originally lost.

Pharmaceutical Therapy

Pharmaceutical therapy often represents a first option in the treatment of patients with obesity who have failed to achieve weight loss goals through lifestyle modifications alone. Pharmaceutical therapies can have limited effectiveness due to non-adherence and, in most cases, need to be taken for life. In addition, more recent pharmaceutical therapies, commonly known as GLP-1s, require once weekly injections and impose significant financial costs on the patient. Since these drugs are absorbed into the bloodstream, they have been shown to pose significant safety risks and negative systemic side effects, such as adverse gastrointestinal, cardiovascular and central nervous system issues, some of which are serious or life threatening.

Bariatric Surgery

Bariatric surgery is a treatment option generally reserved for cases of severe obesity in patients with a BMI greater than 40. Each year, approximately 580,000 people undergo bariatric surgery worldwide. The most common forms of bariatric surgery, gastric bypass and sleeve gastrectomy, promote weight loss by surgically restricting the stomach’s capacity and outlet size. Gastric bypass also affects weight loss by restricting the body’s ability to absorb nutrients. These procedures are highly invasive, inherently risky in a high BMI population, expensive for the patient, and irreversible. Moreover, patients cite fear of complications as the primary reason to not pursue bariatric surgery. Only one percent of patients who qualify for bariatric surgery actually get it.

Bariatric surgery patients are generally required to make significant postoperative lifestyle changes, including strict dietary changes, vitamin supplementation and long-term medical follow-up programs. Side effects of bariatric surgery include a high rate of re-operation, nausea, vomiting, dumping syndrome, dehydration, and even death. Moreover, up to 25% of patients undergoing bariatric surgery will regain all of the weight previously lost as a result of the surgery.

Recently Developed Treatment Alternatives

Given the shortcomings and limitations of existing treatment alternatives, new medical procedures have recently been introduced. Endoscopic balloon therapy involves an endoscopic procedure with anesthesia to implant a balloon in the stomach that leads to satiety, followed by another endoscopic procedure with anesthesia several months later to remove the balloon.

We believe high costs, procedural complexity, poor consumer experiences, lack of ongoing patient support and follow-up, and the risk of serious side effects have limited the adoption of endoscopic balloon therapy:

1. Rate of SAEs. In the ReShape Lifesciences, Inc. pivotal clinical trial for its ReShape Integrated Duo Balloon System, 31 device- or procedure-related serious adverse events were reported in 20 patients, resulting in

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a serious adverse event (“SAE”) rate of approximately 7.5%. Similarly, in the Apollo Endosurgery, Inc. pivotal clinical trial for its ORBERA Intragastric Balloon System, 17 SAEs were reported in 16 patients, resulting in an SAE rate of approximately 10%. In both trials, there were multiple SAEs related to the endoscopy and anesthesia required for placement and removal of the balloons.

2. Lack of comfort and tolerability. The ReShape Duo Balloon and ORBERA Balloon are manufactured from thick silicone containing rigid components. We believe that the materials used in these balloons can lead to discomfort, trauma to the stomach lining, and growth of bacteria and fungi on the balloon surface. Intolerance rates in endoscopic balloons requiring the balloons to be removed were approximately 14-17%, compared with approximately 1-3% for the Allurion Balloon.

3. Limited ability to provide progressive and sustained weight loss. For patients receiving balloon treatment in the ReShape Duo Balloon pivotal trial, the mean weight loss at 24 weeks was just 14.3 pounds. Furthermore, the average treatment subject in ReShape’s pivotal trial with weight loss at 24 weeks regained 40% of the weight loss at 48 weeks, resulting in a mean weight loss of 9.9 pounds at 48 weeks.

4. Inconvenient placement procedure. The placement procedures for the ReShape Duo Balloon and the ORBERA Balloon require both the device placement and the device removal to be performed in an endoscopic procedure using anesthesia. The patient cannot immediately return to normal activities and must be placed under medical observation for at least a few hours until cleared to go home.

Our Platform

The Allurion Program

The Allurion Program features the Allurion Balloon and offers access to the VCS, a cutting-edge digital therapeutic that combines AI-powered remote patient monitoring tools with a behavior change program.

The Allurion Balloon

The Allurion Balloon is a first of its kind, Procedureless^TM intragastric balloon that does not require any surgery, endoscopy, or anesthesia for placement. The balloon is swallowed in a capsule during a discrete outpatient office visit that takes approximately 15 minutes (though times may vary across different outpatient offices). Once the capsule is in the stomach, a delivery catheter is used to fill the Allurion Balloon with approximately 550 milliliters of filling fluid. Approximately four months later, a patented time-activated ReleaseValve^™ opens and allows the balloon to empty and pass out of the body naturally, although in rare cases, endoscopic or surgical intervention may be required for removal.

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The Allurion Balloon is designed to help reduce a patient’s food intake by taking up space in the stomach and slowing the rate at which the stomach empties. By the time the Allurion Balloon passes, patients develop new food preferences, including smaller portion sizes, which we believe leads to maintainable, long-lasting results. We believe our clinical studies support that the Allurion Balloon can be swallowed, filled, and passed, and provide short and long-term therapeutic benefit while minimizing risks.

The Allurion Balloon is comprised of several novel and innovative features that differentiate it from previous intragastric balloons and enable it to be swallowed and then naturally passed, including:

The Allurion Virtual Care Suite

The VCS is a cutting-edge digital therapeutic that combines AI-powered remote patient monitoring tools with a behavior change program.

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The VCS is comprised of tools to support patients’ weight loss experience, which we believe benefit both patients and health care providers:

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In addition to its use by Allurion Balloon patients, we believe the VCS can potentially be a platform for optimal long-term follow up after other medical and surgical weight loss interventions in the future. In June 2022, we incorporated a Treatment Tracking and Clinic-Led Onboarding feature into the VCS, which enables seamless onboarding and management of patients undergoing one or multiple weight loss treatments including gastric balloons such as the Allurion Balloon, surgery, or medications. In addition, in connection with our collaboration with Medtronic, we expect to develop bundled offerings that incorporate the VCS to onboard and manage Medtronic’s patients. Further, in April 2024, we launched the VCS in the United States for patients utilizing other weight loss treatments, including anti-obesity medications and bariatric surgery.

Allurion Program Trials

The Allurion Balloon has demonstrated favorable short and long-term results for weight loss and resolution of co-morbidities in multiple trials, with few adverse events.

In a prospective, non-randomized, open-label, registry trial of 1,770 patients, Allurion Balloon patients lost 14% of total body weight or 30 pounds on average after just four months. In another trial of 509 patients, average weight loss was 13.9% of total body weight at four months and 13.3% of total body weight at one year after balloon passage, representing a 96% maintenance of total body weight loss. In a third trial of 42 patients treated with a second balloon, average total body weight loss was 23%. In a study of 5,003 patients treated with the Allurion Program, patients lost an average of 14% after 4 months.

In a trial of 232 Allurion Balloon patients who maintained ongoing lifestyle modification after balloon passage, average weight loss was 17% of total body weight at one year; In another trial of 522 Allurion Balloon patients, 96% of weight loss was maintained one year after removal of the Allurion Balloon. In a trial of 181 patients that combined Allurion Balloon treatment with a GLP-1 weight loss drug, the first multi-center trial of balloon and drug combination therapy demonstrating significant synergies, average weight loss was 19% of total body weight at eight months.

In a trial of 518 patients (225 with type 2 diabetes and 293 with pre-diabetes) treated with the Allurion Program, those with type 2 diabetes reduced their hemoglobin A1c (HbA1c) on average by 1.6 points, or 23%, and those with pre-diabetes reduced their HbA1c by 0.8 points, or 14%. In a separate trial of 115 patients treated with the Allurion Balloon, co-morbidities were reduced meaningfully—56% resolution of Type 2 diabetes, 59% resolution of hypertension, and 58% resolution of obstructive sleep apnea. When combined with GLP-1 drugs, patients showed 17.6% weight-loss on average after four months. A separate trial of 42 patients showed that after two sequential balloons, 26% percent of patients achieved weigh loss of 30% or more.

The FDA approved the IDE for our AUDACITY trial, a 48-week, prospective, randomized, open-label trial comparing the Allurion Balloon to moderate intensity lifestyle intervention. We received approval of the IDE

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from the FDA in November 2021 to initiate the AUDACITY clinical trial in the United States. The first patient was treated in July 2022. During the third quarter of 2023, we completed the enrollment of 550 patients in the trial across 17 sites in the United States.

Subjects in the treatment arm will be eligible for up to two Allurion Balloons. Co-primary endpoints of the trial include a 50% responder rate, defined as greater than 5.0% of total body weight loss, at 48 weeks following balloon placement, and a 3.0% total body weight loss superiority margin at 48 weeks. The results of the trial, if positive, are expected to support a PMA application to the FDA.

Prior ENLIGHTEN Trial

AUDACITY’s trial design reflects the FDA’s updated recommendations for weight loss devices and builds upon the ENLIGHTEN trial, our prior IDE trial which was conducted in 2018-2019. The ENLIGHTEN trial featured a sham-controlled design with one balloon cycle. The Allurion Balloon met the co-primary endpoint related to responder rate but failed to meet the co-primary endpoint on superiority margin due to sham overperformance.

In 2019, the FDA issued a White Paper on Weight Loss Devices after safety issues were encountered with other weight loss balloons (ReShape and ORBERA) on the market. The FDA’s updated guidance for clinical trials for weight loss balloons required increased efficacy and increased the minimum treatment duration to 6 months with a preference for one-year outcomes. We designed the AUDACITY trial in collaboration with the FDA in 2021 to address these new criteria.

We believe that AUDACITY improves upon ENLIGHTEN given the open-label trial design (i.e., no sham), utilization of multiple balloon cycles, and alignment with the FDA’s updated guidance on intragastric balloons for weight loss.

French Regulatory Decision

On August 6, 2024, it was announced that the Agence Nationale de Sécurité du Médicament (“ANSM”), the French regulatory authority, has suspended sales of the Allurion Balloon in France, and we withdrew the device from the French market. We submitted and have implemented a remediation plan to reduce certain risks associated with the advertising, follow-up program, and adverse events for the Allurion Balloon.

Although we disagree with ANSM’s decision, we are fully cooperating and are in active dialogue with the agency regarding our remediation program prioritizing changes related to its advertising strategy, follow-up program and training programs to address ANSM’s concerns. We are committed to continuing our engagement with ANSM to identify a path that will enable us to resume the commercialization of the Allurion Balloon in France.

Our Business Model

We believe that our business-to-business-to-consumer business model creates an economic benefit for all key stakeholders. Health care providers may benefit from providing the Allurion Program because it addresses a significant unmet need for their patients and is designed to not require time-consuming surgery, endoscopy, or anesthesia. Moreover, we can provide our product to health care providers who have historically not been able to provide cash pay weight loss procedures, because the Allurion Balloon does not require endoscopy or anesthesia for placement and hence there are fewer restrictions on the type of doctor that can use the Allurion Balloon versus other balloons. Patients may benefit because placement procedures do not require invasive surgery, endoscopy, or anesthesia and hence may reduce the overall cost and inconvenience of getting treated.

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We believe our platform addresses the following limitations of current weight loss treatments:

Our Competitive Strengths

We developed the Allurion Program to overcome the limitations of other weight loss treatments, including the other intragastric balloons. Based on our commercial experience in over 150,000 patients, we believe that the Allurion Program provides considerable advantages to patients and providers:

Consumer-centric, Procedureless^TM technology with favorable safety profile. The Allurion Balloon does not require surgery, endoscopy, or anesthesia for placement; in rare cases, endoscopic or surgical intervention

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may be required for removal. We believe this results in a safer, easier, faster, and more convenient patient experience at a lower cost and a device that can be administered by a wide array of providers. Though the Allurion Balloon has not been compared in head-to-head trials with other liquid-filled intragastric balloons, Allurion has reported a lower device or procedure-related SAE rate than competing intragastric balloons, with considerably better weight loss results.

More than just a balloon: an end-to-end weight management platform powered by AI and data. The Allurion Program features a uniquely designed medical device and offers access to a clinically-proven behavior change program and AI-powered remote patient monitoring through the VCS. We believe this holistic approach can improve outcomes for patients, streamline provider workflow, enable end-to-end weight management, and open the door to a life-long relationship with the patient. Further, we believe that the ongoing stream of data we receive on patient outcomes and provider productivity will enable us to enhance the capabilities of our AI platform and further expand our data moat.

Life-changing clinical outcomes that are fast yet durable. On average, Allurion Program patients lose 14% of their total body weight (approximately 14kg or 30lbs) over just four months and sustain 96% of that weight loss at one year. We have also observed similarly significant effects on obesity-related co-morbidities like type 2 diabetes.

Attractive economics for patients and providers. By eliminating endoscopy and anesthesia from balloon placement and removal, we believe that we have made our weight loss product more affordable to the patient and more lucrative for the provider compared to the competition. Health care providers can treat patients with a high- margin device in just a 15-minute office visit, which when compared to devices that require hospital stays, significantly improves profitability per hour.

Broad patent portfolio and proprietary manufacturing capabilities. We have a broad portfolio of intellectual property-including 58 issued patents protecting our products as of November 29, 2024, which we believe, when combined with our proprietary manufacturing processes and know-how, leads to a significant competitive moat. Currently, the Allurion Balloon is manufactured and assembled in-house using components and sub-assemblies at our facilities in Natick, Massachusetts, which further enhances our ability to maintain high levels of quality and protect manufacturing trade secrets that we have developed since inception.

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Proven management team with expansive industry experience. Our executive team consists of seasoned medical device and digital health professionals with deep industry experience and expertise, who have led and managed high-growth private and public companies that have introduced and commercialized multiple new products.

Our Growth Strategy

Our primary objective is to become the world’s leading weight loss treatment provider and fulfill our mission to end obesity. The key elements to our strategy are the following:

Our Competition

We have developed, manufactured, and commercialized the world’s first and only swallowable, Procedureless^TM gastric balloon for weight loss, which we offer as part of our Allurion Program, a multi-faceted weight loss platform. Weight-loss treatments range from behavioral modification, to drugs and medical devices, and surgery. Outside the U.S., we compete with a variety of local and regional competitive intragastric balloon

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manufacturers including SC MedSil, Medicone and Spatz Laboratories. In the U.S., there are three manufacturers with an intragastric balloon approved by the FDA at this time: Boston Scientific Corporation, Inc., ReShape Lifesciences, Inc. and Spatz FGIA Inc. All of these balloons require endoscopy and anesthesia for placement and/or removal.

We also compete against the manufacturers of pharmaceuticals that are directed at treating weight loss, such as Novo Nordisk A/S, Eli Lilly & Co., Roche Holding AG, GlaxoSmithKline plc, Arena Pharmaceuticals, Inc., VIVUS, Inc. and Orexigen Therapeutics, Inc.

We believe that the principal competitive factors in our market include:

Many of our competitors, or their parent companies, are larger than we are, and they may enjoy several competitive advantages over us, including:

As a result, we cannot assure you that we will be able to compete effectively against these companies or their products.

Intellectual Property

We have assembled a broad portfolio of intellectual property related to our medical device, the Allurion Balloon, and our supporting technology platform, the VCS. We believe this intellectual property, combined with proprietary manufacturing processes and the regulatory approvals we have successfully obtained in over 50 countries outside of the United States, provides us with a strong market position.

As of November 29, 2024, we owned or had rights to 19 issued patents and five pending patent applications in the U.S. related to various aspects of our Allurion Balloon, such as a swallowable, self-deflating and naturally passing gastric balloon, improvements to the fill and release valves therein, methods for deploying and releasing a gastric balloon within the body, and next generation fill and release valves. In addition, outside of the United

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States we had 39 issued and five patents pending that generally parallel the U.S. portfolio in 17 countries as of November 29, 2024. We are not currently licensing any patents. Allurion owns and possesses all right, title and interest in and to each patent and patent application noted herein free and clear of all liens, other than any liens granted to RTW pursuant to our royalty arrangements and Amended Note Purchase Agreement with RTW.

Our issued patents are expected to expire at various times between February 21, 2033 and November 27, 2040. The following table sets forth a summary of our patents and patent applications, including where patent applications have been filed, the exemplary subject matter being pursed in the applications, and expected expiration dates.

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We are protecting three Allurion-related trademarks in three classes: medical devices (the balloon), downloadable software and digital scale (the mobile app), and medical services (provided by our physicians). As of November 29, 2024, we have 65 registered trademarks among 14 jurisdictions (which jurisdictions include the 27 member states of the European Union). It is our intention to maintain these registrations indefinitely and to expand the number of jurisdictions in which we have registered trademarks as deemed necessary to protect our freedom to use the marks and/or block competitors in additional markets.

We also hold registrations to the “Elipse” trademark in three classes in four jurisdictions; it is our intention to allow these registrations to lapse at the end of their current terms as we are no longer identified by this trademark.

In addition to pursuing patents on our products, we have taken steps to protect our intellectual property and proprietary technology by entering into confidentiality agreements and intellectual property assignment agreements with our employees, consultants, corporate partners, and, when needed, our advisors. Such agreements may not be enforceable or may not provide meaningful protection for our trade secrets or other proprietary information in the event of unauthorized use or disclosure or other breaches of the agreements, and we may not be able to prevent such unauthorized disclosure. Monitoring unauthorized disclosure is difficult, and we do not know whether the steps we have taken to prevent such disclosure are, or will be, adequate. In addition, we intend to expand our international operations, and effective patent, copyright, trademark and trade secret protection may not be available or may be limited in foreign countries.

In general, the medical device industry is characterized by the existence of a large number of patents and frequent allegations and related litigation regarding patent and other intellectual property rights. Third parties,

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including our competitor companies, may assert patent, copyright, trademark and other intellectual property rights against us, our partners or our customers. Our standard license and other agreements may obligate us to indemnify our partners and customers against such claims. We could incur substantial costs and diversion of the attention of our management and technical personnel in defending against any such claims. Successful claims of infringement of a valid patent by a third party could prevent us from selling or distributing our products or performing certain services, require us to expend time and resources to develop non-infringing products, or force us to pay substantial damages (including treble damages if we are found to have willfully infringed patents), royalties or other fees. We cannot assure you that we do not currently infringe, or that we will not in the future infringe, upon any third-party patents or other proprietary rights.

We intend to continue to expand our intellectual property portfolio and invest in protecting new innovations developed in our pipeline programs.

Third-party open source software components.

The Allurion VCS and our other products and services contain software licensed to us by third-party authors under “open source” licenses. Use of such software may entail greater risks than use of non-open source third-party commercial software, as open source licensors generally do not provide support, warranties, indemnification or other contractual protections regarding infringement claims or the quality of the code. Although we seek to monitor our use of open source software to avoid such consequences and to comply with the terms thereof, the terms of many open source licenses have not been interpreted by U.S. or foreign courts, and there is a risk that these licenses could be construed in a way that could impose unanticipated conditions or restrictions on our ability to provide or distribute our platform. Although we try to mitigate the risk of our use of open source software by managing software development with an information security program that is in compliance with the global standard International Organization for standardization (“ISO”) 27001:2013, our information security program does not yet comply fully with all of the additions and changes in the updated ISO 27001:2022 version of the standard. We anticipate transitioning to compliance with the ISO 27001:2022 version of the standard prior to the required transition date of October 31, 2025. Using an automated static code analysis tool, we regularly examine all VCS software code, as well as included open source code, for security vulnerabilities, code quality, as well as open source licensing that is in alignment with our software distribution requirements.

Sales and Marketing

We currently sell our products either through our direct sales force, or in certain countries, through distributors. As of November 29, 2024, our sales and marketing organization consisted of approximately 74 employees and consultants.

Our sales personnel are equipped with a suite of resources including extensive in-depth training, marketing resource tools, and access to a robust schedule of education events. In the regions where we have distributors, we provide clinical training and support to build positive relationships with physicians and clinics and to position our product in the marketplace as a premium product with consequent premium pricing.

We employ a multi-faceted marketing strategy focused on social media engagement with patient success stories, conferences, advertisements and education.

Manufacturing Capabilities

Allurion Balloons are manufactured in-house using components and sub-assemblies at our 10,000 square foot, ISO 13485 certified manufacturing facility in Natick, Massachusetts. We rely on suppliers for the extruded film to manufacture our Allurion Balloon and suppliers for stylets, filler kits, accessories, and scales. All critical

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component suppliers undergo strict quality system audits and component inspections to ensure they meet our quality standards. All suppliers and materials must be qualified prior to being approved for manufacturing activities. Our suppliers have no contractual obligations to supply us with components, and we are not contractually obligated to purchase such components from any of our suppliers. Order quantities and lead times for components purchased from our suppliers are based on our forecasts derived from anticipated future demand.

Lead times for components may vary significantly depending on the size of the order, time required to fabricate and test the components, specific supplier requirements and current market demand for the components and sub-assemblies. However, some of these components are critical to our products and there are relatively few alternative sources of supply. To date, we have not experienced significant delays in obtaining any of our components or sub-assemblies.

We have registered with the FDA as a medical device manufacturer and the Center for Devices and Radiological Health. We and our component suppliers manufacture our products in compliance with the FDA’s Quality System Regulation (“QSR”) in 21 CFR part 820 of the FDCA.

We are also subject to periodic inspections and audits by various international regulatory and notified bodies, and we believe our past performance in these audits reflects the strength of our quality system and production and process controls. We consider this to be a key element of our risk management and business continuity strategies and a competitive advantage as we have full control of the product life-cycle. Our in-house manufacturing team included 11 employees at November 29, 2024. We believe our manufacturing experience, know-how, and process-related trade secrets are a competitive advantage.

Additionally, we will need to increase our manufacturing capabilities over time in order to satisfy any increased demand for our balloon system, and we have no experience manufacturing our balloon system in such quantities. If we are unable to keep up with demand for our balloon system, our revenue could be impaired, market acceptance for our balloon system could be harmed and our customers might instead purchase our competitors’ products.

Government Regulation

The healthcare industry, and thus our business as a medical device company, is subject to extensive federal, state, local and foreign regulation. Some of the pertinent laws have not been definitively interpreted by the regulatory authorities or the courts, and their provisions are open to a variety of interpretations. In addition, these laws and their interpretations are subject to change.

Regulatory System for Medical Devices in the United States

Unless an exemption applies, each new or significantly modified medical device a company seeks to commercially distribute in the United States will require a premarket notification to the FDA requesting permission for commercial distribution under Section 510(k) of the FDCA, also referred to as a 510(k) clearance, a de novo classification request, or approval from the FDA of a PMA application. Our Allurion Balloon will require approval from the FDA of a PMA application. The 510(k) clearance, de novo classification request and PMA processes can be resource intensive, expensive and lengthy, and require payment of significant user fees, unless an exemption is available.

Device Classification

Under the FDCA, medical devices are classified into one of three classes—Class I, Class II or Class III—depending on the degree of risk associated with each medical device and the extent of control needed to provide reasonable assurances with respect to safety and effectiveness.

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Class I includes devices with the lowest risk to the patient and are those for which safety and effectiveness can be reasonably assured by adherence to a set of FDA regulations, referred to as General Controls, which require compliance with the applicable portions of the QSR facility registration and product listing, reporting of adverse events and malfunctions, and appropriate, truthful and non-misleading labeling and promotional materials. Some Class I devices, also called Class I reserved devices, also require premarket clearance by the FDA through the 510(k) premarket notification process described below. Most Class I products are exempt from the premarket notification requirements.

Class II devices are those that are subject to the General Controls, and Special Controls as deemed necessary by the FDA to ensure the safety and effectiveness of the device. These Special Controls can include performance standards, patient registries, FDA guidance documents and post-market surveillance. Most Class II devices are subject to premarket review and clearance by the FDA. Premarket review and clearance by the FDA for Class II devices is accomplished through the 510(k) premarket notification process.

Class III devices include devices deemed by the FDA to pose the greatest risk such as life-supporting or life-sustaining devices, or implantable devices, in addition to those deemed novel and not substantially equivalent following the 510(k) process. The safety and effectiveness of Class III devices cannot be reasonably assured solely by the General Controls and Special Controls described above. Therefore, these devices are subject to the PMA application process, described below, which is generally more costly and time consuming than the 510(k) process.

The Investigational Device Process

In the United States, absent certain limited exceptions, human clinical trials intended to support 510(k) clearance, de novo classification, or PMA approval require an IDE application. Some types of trials considered to present “non-significant risk” are deemed to have an approved IDE once certain requirements are addressed, and investigational review board (“IRB”) approval is obtained. If the device presents a “significant risk” to human health, as defined by the FDA, the sponsor must submit an IDE application to the FDA and obtain IDE approval prior to commencing the human clinical trials. The IDE application must be supported by appropriate data, such as animal and laboratory testing results, showing that it is safe to test the device in humans and that the testing protocol is scientifically sound.

The IDE application must be approved in advance by the FDA for a specified number of subjects. The FDA also may issue a conditional approval, in which case the trial may be conducted subject to the FDA’s conditions, which the sponsor must address in order to conduct the trial as originally requested. Generally, clinical trials for a significant risk device may begin once the IDE application is approved by the FDA and the trial protocol and informed consent are approved by appropriate IRBs at the clinical trial sites. There can be no assurance that submission of an IDE application will result in the ability to commence clinical trials, and although the FDA’s approval of an IDE application allows clinical testing to go forward for a specified number of subjects, it does not bind the FDA to accept the results of the trial as sufficient to prove the product’s safety and efficacy, even if the trial meets its intended success criteria, unless the sponsor has obtained a binding protocol agreement.

All clinical trials must be conducted in accordance with the FDA’s IDE regulations that govern investigational device labeling, prohibit promotion and specify an array of recordkeeping, reporting and monitoring responsibilities of trial sponsors and trial investigators. Clinical trials must further comply with the FDA’s good clinical practice regulations for IRB approval and for informed consent and other human subject protections. Required records and reports are subject to inspection by the FDA. Clinical trial investigators must disclose certain financial interests to clinical trial sponsors. The commencement or completion of any clinical trial may be delayed or halted, including from the FDA imposing a clinical hold on a trial, or be inadequate to support approval of a PMA application, de novo classification or clearance of a 510(k), for numerous reasons.

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The 510(k) Clearance Process

Under the 510(k) process, the manufacturer must submit to the FDA a premarket notification 90 days before it seeks to commercially distribute its device, demonstrating that the device is “substantially equivalent,” as defined in the statute, to a legally marketed predicate device.

A predicate device is a legally marketed device that is not subject to premarket approval, i.e., a device that was legally marketed prior to May 28, 1976 (pre-amendments device) and for which a PMA is not required, a device that has been reclassified from Class III to Class II or I, or a device that was previously found substantially equivalent through the 510(k) process.

To be “substantially equivalent,” the proposed device must have the same intended use as the predicate device, and either have the same technological characteristics as the predicate device or have different technological characteristics and not raise different questions of safety or effectiveness than the predicate device. Clinical data is sometimes required to support substantial equivalence.

After a 510(k) premarket notification is submitted, the FDA determines whether to accept it for substantive review. If it lacks necessary information for substantive review, the FDA will refuse to accept the 510(k) premarket notification. If it is accepted for filing, the FDA begins a substantive review. As a practical matter, clearance often takes longer than 90 days, and clearance is never assured. Although many 510(k) premarket notifications are cleared without clinical data, the FDA may require further information, including clinical data, to make a determination regarding substantial equivalence, which may significantly prolong the review process. If the FDA agrees that the device is substantially equivalent, it will grant clearance to commercially market the device.

If the FDA determines that the device is not “substantially equivalent” to a predicate device, or if the device is automatically classified into Class III, the device sponsor must then fulfill the much more rigorous premarketing requirements of the PMA approval process, or seek reclassification of the device through the de novo process. A manufacturer can also submit a petition for direct de novo review if the manufacturer is unable to identify an appropriate predicate device and the new device or new use of the device presents a moderate or low risk.

After a device receives 510(k) clearance, any modification, including modification to or deviation from design, manufacturing processes, materials, packaging and sterilization that could significantly affect the device’s safety or effectiveness, or that would constitute a new or major change in its intended use, will require a new 510(k) clearance or, depending on the modification, could require a PMA application or de novo classification. The FDA requires each manufacturer to determine whether the proposed change requires submission of a 510(k) or a PMA in the first instance, but the FDA can review any such decision and disagree with a manufacturer’s determination. Many minor modifications are accomplished by a letter-to-file in which the manufacturer documents the change in an internal letter-to-file. The letter-to-file is in lieu of submitting a new 510(k) to obtain clearance for such change. The FDA can always review these letters to file in an inspection. If the FDA disagrees with a manufacturer’s determination regarding whether a new premarket submission is required for the modification of an existing device, the FDA can require the manufacturer to cease marketing and/or recall the modified device until 510(k) clearance or approval of a PMA application is obtained. In addition, in these circumstances, the FDA can impose significant regulatory fines or penalties for failure to submit the requisite PMA application(s).

The PMA Approval Process

Through the PMA application process, the applicant must submit data and information demonstrating reasonable assurance of the safety and effectiveness of the device for its intended use to the FDA’s satisfaction. Accordingly, a PMA application typically includes, but is not limited to, extensive technical information

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regarding device design and development, preclinical study and clinical trial data, manufacturing information, labeling and financial disclosure information for the clinical investigators in device trials. The PMA application must provide valid scientific evidence that demonstrates to the FDA’s satisfaction a reasonable assurance of the safety and effectiveness of the device for its intended use.

Following receipt of a PMA application, the FDA conducts an administrative review to determine whether the application is sufficiently complete to permit a substantive review. If it is not, the agency will refuse to file the PMA. If it is, the FDA will accept the application for filing and begin the review. The FDA, by statute and by regulation, has 180 days to review a filed PMA application, although the review of an application more often occurs over a significantly longer period. During this review period, the FDA may request additional information or clarification of information already provided, and the FDA may issue a major deficiency letter to the applicant, requesting the applicant’s response to deficiencies communicated by the FDA. The FDA considers a PMA or PMA supplement to have been voluntarily withdrawn if an applicant fails to respond to an FDA request for information (e.g., major deficiency letter) within a total of 360 days. Before approving or denying a PMA, an FDA advisory committee may review the PMA at a public meeting and provide the FDA with the committee’s recommendation on whether the FDA should approve the submission, approve it with specific conditions, or not approve it. The FDA is not bound by the recommendations of an advisory committee, but it considers such recommendations carefully when making decisions.

Prior to approval of a PMA, the FDA may conduct inspections of the clinical trial data and clinical trial sites, as well as inspections of the manufacturing facility and processes. Overall, the FDA review of a PMA application generally takes between one and three years, but may take significantly longer.

If the FDA evaluation of a PMA is favorable, the FDA will issue either an approval letter, or an approvable letter, the latter of which usually contains several conditions that must be met in order to secure final approval of the PMA. When and if those conditions have been fulfilled to the satisfaction of the FDA, the agency will issue a PMA approval letter authorizing commercial marketing of the device, subject to the conditions of approval and the limitations established in the approval letter. If the FDA’s evaluation of a PMA application or manufacturing facilities is not favorable, the FDA will deny approval of the PMA or issue a not approvable letter. The FDA also may determine that additional tests or clinical trials are necessary, in which case the PMA approval may be delayed for several months or years while the trials are conducted and data is submitted in an amendment to the PMA, or the PMA is withdrawn and resubmitted when the data are available. The PMA process can be expensive, uncertain and lengthy.

New PMA applications or PMA supplements are required for modification to the manufacturing process, equipment or facility, quality control procedures, sterilization, packaging, expiration date, labeling, device specifications, ingredients, materials or design of a device that has been approved through the PMA process. PMA supplements often require submission of the same type of information as an initial PMA application, except that the supplement is limited to information needed to support any changes from the device covered by the approved PMA application and may or may not require as extensive technical or clinical data or the convening of an advisory panel, depending on the nature of the proposed change.

In approving a PMA application, as a condition of approval, the FDA may also require some form of post-approval trial or post-market surveillance, whereby the applicant conducts a follow-up trial or follows certain patient groups for several years and makes periodic reports to the FDA on the clinical status of those patients when necessary to protect the public health or to provide additional or longer-term safety and effectiveness data for the device. The FDA may also require post-market surveillance for certain devices cleared under a 510(k) notification, such as implants or life-supporting or life-sustaining devices used outside a device user facility. The FDA may also approve a PMA application with other post-approval conditions intended to ensure the safety and effectiveness of the device, such as, among other things, restrictions on labeling, promotion, sale, distribution and use.

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Pervasive and Continuing FDA Regulation

After the FDA permits a device to enter commercial distribution, numerous regulatory requirements continue to apply. These include:

Our manufacturing processes are required to comply with the applicable portions of the FDA’s QSR that covers the methods and the facilities and controls for the design, manufacture, testing, production, processes, controls, quality assurance, labeling, packaging, distribution, installation, and servicing of finished devices intended for human use. In February 2024, the FDA issued the Quality Management System Regulation Final Rule to amend the QSR, incorporating by reference the international standard for medical device quality management systems set by the ISO, ISO 13485:2016. The rule will become effective on February 2, 2026. Until then, manufacturers are required to comply with the QSR. We actively maintain compliance with the FDA’s QSR, and the European Union’s Quality Management Systems requirements, ISO 13485:2016.

Since February 2017, the FDA has issued three separate letters to health care providers warning of SAEs, including deaths, which are specific to liquid-filled intragastric balloons. We are aware of the filing of additional reports of SAEs, including deaths, associated with liquid-filled balloons since the issuance of the FDA letters to health care providers. While the advisory letters were specific to liquid-filled intragastric balloons and not the Allurion Balloon, these letters could create negative perceptions of the entire gastric balloon category, which may cause negative consequences for us including requiring additional warnings, precautions and/or contraindications in the labeling, delaying or denying approval of our products, or possible review or withdrawal of any approval that we may obtain.

The FDA has broad post-market and regulatory enforcement powers. Medical device manufacturers are subject to unannounced inspections by the FDA and other state, local and foreign regulatory authorities to assess compliance with the QSR and other applicable regulations, and these inspections may include the manufacturing facilities of any suppliers.

Failure to comply with applicable regulatory requirements can result in enforcement action by the FDA, which may include any of the following sanctions:

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Other U.S. Healthcare Laws

Our business is regulated by laws pertaining to healthcare fraud and abuse, including anti-kickback laws and false claims laws, and other healthcare laws. Violations of these laws are punishable by significant administrative, criminal and civil penalties, including damages, disgorgement, monetary fines, possible exclusion from participation in federal and state healthcare programs, such as Medicare and Medicaid, imprisonment, and integrity oversight and reporting obligations.

Anti-Kickback Statute

The federal Anti-Kickback Statute prohibits, among other things, persons and entities from knowingly and willfully soliciting, offering, receiving or paying remuneration, directly or indirectly, in cash or in kind, in exchange for or to induce either the referral of an individual for, or the furnishing, recommending, purchasing, leasing, ordering, or arranging for, a good or service for which payment may be made under a federal healthcare program such as Medicare and Medicaid. The term “remuneration” has been broadly interpreted to include anything of value, including payments to physicians or other providers, gifts, discounts, the furnishing of supplies or equipment, credit arrangements, waiver of payments and providing anything of value at less than fair market value. There are a number of statutory exceptions and regulatory safe harbors protecting some common activities from prosecution, but the exceptions and safe harbors are drawn narrowly and require strict compliance in order to offer protection. These exceptions and safe harbors exist for various types of arrangements, including certain investment interests, leases, personal service arrangements, discounts and management contracts. The failure of a particular activity to comply with all requirements of an applicable safe harbor regulation does not mean that the activity violates the federal Anti-Kickback Statute or that prosecution will be pursued. Instead, the legality of the arrangement will be evaluated on a case-by-case basis based on a cumulative review of all of the relevant facts and circumstances. Activities and business arrangements that do not fully satisfy each applicable exception or safe harbor may result in increased scrutiny by government enforcement authorities such as the Office of the Inspector General.

Additionally, the intent standard under the federal Anti-Kickback Statute was amended by the Affordable Care Act (“ACA”) to a stricter standard such that a person or entity no longer needs to have actual knowledge of the federal Anti-Kickback Statute or specific intent to violate it in order to have committed a violation. Rather, if “one purpose” of the renumeration is to induce referrals, the federal Anti-Kickback Statute is violated. In addition, the ACA codified case law that a claim that includes items or services resulting from a violation of the federal Anti-Kickback Statute constitutes a false or fraudulent claim for purposes of the federal civil False Claims Act (“FCA”) (discussed below).

Further, certain states have adopted prohibitions similar to the federal Anti-Kickback Statute, some of which apply to the referral of patients for healthcare services reimbursed by any source, not only by government healthcare programs such as the Medicare and Medicaid programs, and do not include comparable exceptions and/or safe harbors to those provided by the federal Anti-Kickback Statute.

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Federal False Claims Act

The FCA prohibits, among other things, knowingly filing or causing the filing of a false claim or the knowing use of false statements to obtain payment from the federal government. A claim that is filed pursuant to an unlawful kickback may be a false claim under this law and, in a number of cases, manufacturers of medical products have entered into settlements based on FCA allegations that their financial relationships with customers “caused” these customers to submit false claims. When an entity is determined to have violated the FCA, it may be required to pay up to three times the actual damages sustained by the government, plus mandatory civil penalties for each separate false claim. Private individuals can file suits under the FCA on behalf of the government. These lawsuits are known as “qui tam” actions, and the individuals bringing such suits, sometimes known as “relators” or, more commonly, “whistleblowers,” may share in any amounts paid by the entity to the government in fines or settlement. Since complaints related to “qui tam” actions are initially filed under seal, the action may be pending for some time before a defendant is even aware of such action.

HIPAA

The Health Insurance Portability and Accountability Act (“HIPAA”) created new federal crimes, including healthcare fraud and false statements relating to healthcare matters. HIPAA prohibits knowingly and willfully executing, or attempting to execute, a scheme to defraud any healthcare benefit program, including private payers. A violation of this statute is a felony and may result in fines, imprisonment or exclusion from government-sponsored programs. The false statements statute prohibits knowingly and willfully falsifying, concealing or covering up a material fact or making any materially false, fictitious or fraudulent statement in connection with the delivery of or payment for healthcare benefits, items or services. A violation of this statute is a felony and may result in fines or imprisonment. Similar to the federal Anti-Kickback Statute, a person or entity does not need to have actual knowledge of the statute or specific intent to violate it in order to have committed a violation.

HIPAA, as amended by the Health Information Technology for Economic and Clinical Health Act (“HITECH”), also protects the security and privacy of individually identifiable health information maintained or transmitted by certain healthcare providers, health plans and healthcare clearinghouses and their business associates. HIPAA restricts the use and disclosure of patient health information, including patient records. Although we believe that HIPAA does not apply directly to us, most of our customers have significant obligations under HIPAA, and we intend to cooperate with customers and others to ensure compliance with HIPAA with respect to patient information. HITECH created new tiers of civil monetary penalties, amended HIPAA to make civil and criminal penalties directly applicable to business associates, and gave state attorneys general new authority to file civil actions for damages or injunctions in federal courts to enforce the federal HIPAA laws and seek attorney’s fees and costs associated with pursuing federal civil actions. Depending on the facts and circumstances, we could be subject to significant penalties if we violate HIPAA. Failure to comply with HIPAA obligations can result in civil fines and/or criminal penalties. Some states have also enacted rigorous laws or regulations protecting the security and privacy of patient information.

Transparency Reporting

In March 2010, the U.S. Congress enacted the ACA. The U.S. Physician Payments Sunshine Act, which is part of the ACA, requires manufacturers of drugs, biologics, devices and medical supplies that are subject to (or used in procedures subject to) Medicare and Medicaid reimbursement to record payments and transfers of value to physicians (defined to include doctors, dentists, optometrists, podiatrists, and chiropractors), certain non-physician healthcare professionals (such as physician assistants and nurse practitioners), and teaching hospitals as well as ownership and investment interests held by physicians and their immediate family members and to report this data to the Centers for Medicare & Medicaid Services, for public disclosure. Failure to report may result in civil or criminal fines and/or penalties. Similar reporting requirements have also been enacted in several states, and an increasing number of countries worldwide either have adopted or are considering similar laws requiring transparency of interactions with healthcare professionals. In addition to reporting, some states

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such as Massachusetts and Vermont impose a ban or limit the ability of medical device and pharmaceutical manufacturers providing certain items of value or payments to physicians or other healthcare practitioners licensed in these states. In recent years, the federal government and several states have enacted legislation requiring biotechnology, pharmaceutical and medical device companies to establish marketing compliance programs and file periodic reports on sales, marketing and other activities.

Analogous State and Foreign Laws and Regulations

Additionally, we are subject to state and foreign equivalents of each of the healthcare laws and regulations described above, among others, some of which may be broader in scope and may apply regardless of the payor. Many U.S. states have adopted laws similar to the federal Anti-Kickback Statute and False Claims Act, and may apply to our business practices, including, but not limited to, research, distribution, sales or marketing arrangements and claims involving healthcare items or services reimbursed by non-governmental payors, including private insurers. In addition, some states have passed laws that require pharmaceutical companies to comply with the April 2003 Office of Inspector General Compliance Program Guidance for Pharmaceutical Manufacturers and/or the Pharmaceutical Research and Manufacturers of America’s Code on Interactions with Healthcare Professionals. Several states also impose other marketing restrictions or require pharmaceutical companies to make marketing or price disclosures to the state and require the registration of pharmaceutical sales representatives. State and foreign laws, including for example the European Union General Data Protection Regulation, which became effective May 2018 also govern the privacy and security of health information in some circumstances, many of which differ from each other in significant ways and often are not preempted by HIPAA, thus complicating compliance efforts. There are ambiguities as to what is required to comply with these state requirements and if we fail to comply with an applicable state law requirement we could be subject to penalties.

Coverage, Reimbursement and Healthcare Reform

Patients in the U.S. and elsewhere generally rely on third-party payors to reimburse part or all of the costs associated with their healthcare treatment. Accordingly, market acceptance of our products is dependent on the extent to which third-party coverage and reimbursement is available from third-party payors, which can differ significantly from payor to payor and may change from time to time. Further, from time to time, typically on an annual basis, payment amounts are updated and revised by third-party payors. In cases where the cost of certain of our products are recovered by the healthcare provider as part of the payment for performing a procedure and not separately reimbursed or paid directly by the patient, these updates could directly impact the demand for our products.

Coverage and reimbursement by a third-party payor may depend upon a number of factors, including the third-party payor’s determination that use of a product is:

All third-party payors, whether governmental or commercial and whether inside the U.S. or outside, are developing increasingly sophisticated methods of controlling healthcare costs. These cost-control methods include prospective payment systems, bundled payment models, capitated arrangements, group purchasing, benefit redesign, pre-authorization processes and requirements for second opinions prior to procedures. These cost-control methods also potentially limit the amount that healthcare providers may be willing to pay for our products. Therefore, coverage or reimbursement for medical devices may decrease in the future. In addition, consolidation in the healthcare industry could lead to demands for price concessions, which may impact our ability to sell our products at prices necessary to support our current business strategies.

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Federal and state governments in the U.S. and outside the U.S. may enact legislation to modify the healthcare system, which may result in increased government price controls, additional regulatory mandates and other measures designed to constrain medical costs. These reform measures may limit the amounts that federal and state governments will pay for healthcare products and services, and also indirectly affect the amounts that private payors are willing to pay. The pricing pressure resulting from healthcare cost containment and reimbursement changes could decrease demand for our products, the prices that customers are willing to pay and the frequency of use of our products, which could have an adverse effect on our business.

Foreign Government Regulation

In addition to U.S. regulations, we are subject to a variety of foreign government regulations applicable to medical devices, medicinal products and combination products.

Regulation of Medical Devices in the European Union

The European Union (“EU”), has adopted specific directives and regulations regulating the design, manufacture, clinical investigation, conformity assessment, labeling and adverse event reporting for medical devices.

Until May 25, 2021, medical devices were regulated by the Council Directive 93/42/EEC, or Medical Devices Directive (“MDD”), which has been repealed and replaced by Regulation (EU) No 2017/745, or MDR. There is a transition period during which certificates issued under the Medical Devices Directive remain valid; however, when such certificates expire (or, if earlier, by May 26, 2024), the devices must be certified under the new regime set forth in the Medical Devices Regulation. An extension for devices transitioning to the EU Medical Devices Regulation has been changed from May 26, 2024 to May 26, 2026 for class III implantable custom-made devices and December 31, 2027 for class III and implantable class IIb devices.

Medical Devices Directive

Under the Medical Devices Directive, or MDD, all medical devices placed on the market in the EU must meet the relevant essential requirements laid down in Annex I to the Medical Devices Directive, including the requirement that a medical device must be designed and manufactured in such a way that it will not compromise the clinical condition or safety of patients, or the safety and health of users and others. In addition, the device must achieve the performance intended by the manufacturer and be designed, manufactured, and packaged in a suitable manner. The European Commission has adopted various standards applicable to medical devices and there are additionally harmonized standards relating to the design and manufacture of medical devices which are not mandatory but, if complied with, indicate that the device satisfies the applicable element of the essential requirements.

To demonstrate compliance with the essential requirements laid down in Annex I to the Medical Devices Directive, medical device manufacturers must undergo a conformity assessment procedure, which varies according to the type of medical device and its classification with respect to risk. As a general rule, demonstration of conformity of medical devices and their manufacturers with the essential requirements must be based, among other things, on the evaluation of clinical data supporting the safety and performance of the products during normal conditions of use. Specifically, a manufacturer must demonstrate that the device achieves its intended performance during normal conditions of use, that the known and foreseeable risks, and any adverse events, are minimized and acceptable when weighed against the benefits of its intended performance, and that any claims made about the performance and safety of the device are supported by suitable evidence. Except for low-risk medical devices (Class I non-sterile, non-measuring devices), where the manufacturer can self-declare the conformity of its products with the essential requirements (except for any parts which relate to sterility or metrology), a conformity assessment procedure requires the intervention of a notified body. Notified bodies are independent organizations designated by EU member states to assess the conformity of devices before being placed on the market. A notified body would typically audit and examine a product’s technical dossiers and the manufacturers’ quality system. If satisfied that the

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relevant product conforms to the relevant essential requirements, the notified body issues a certificate of conformity, which the manufacturer uses as a basis for its own declaration of conformity. The manufacturer may then apply the CE Mark to the device, which allows the device to be placed on the market throughout the EU.

Medical Devices Regulation

On April 5, 2017, MDR was adopted with the aim of ensuring better protection of public health and patient safety. Unlike the MDD, the MDR is directly applicable in EU member states without the need for member states to implement into national law. This aims at increasing harmonization across the EU.

The MDR became effective on May 26, 2021. The new Regulation follows the same process of conformity assessment, certificates of conformity and applying a CE mark to devices before they can be placed on the market. However, among other things, the MDR:

Devices lawfully placed on the market pursuant to the Medical Devices Directive prior to May 26, 2021 may generally continue to be made available on the market or put into service until May 26, 2025, provided that the requirements of the transitional provisions are fulfilled. In particular, the certificate in question must still be valid. However, even in this case, manufacturers must comply with a number of new or reinforced requirements set forth in the Medical Devices Regulation, in particular the obligations described below.

The MDR requires that before placing a device, other than a custom-made device, on the market, manufacturers (as well as other economic operators such as authorized representatives and importers) must register by submitting identification information to Eudamed, unless they have already registered. The information to be submitted by manufacturers (and authorized representatives) also includes the name, address and contact details of the person or persons responsible for regulatory compliance.

The MDR also requires that before placing a device, other than a custom-made device, on the market, manufacturers must assign a unique identifier to the device and provide it along with other core data to the UDI database. These new requirements aim at ensuring better identification and traceability of the devices.

Manufacturers are responsible for entering the necessary data on Eudamed, which includes the UDI database, and for keeping it up to date. Eudamed is not yet fully functional, however the European Commission

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is aiming to have a fully functional version of the Eudamed medical device database available in the fourth quarter of 2027. The Medical Device Coordination Group has published guidance on administrative practices for manufacturers until Eudamed is fully functional.

All manufacturers placing medical devices on the market in the EU must also comply with the EU medical device vigilance system, which has been reinforced by the MDR. Under this system, serious incidents and Field Safety Corrective Actions must be reported to the relevant authorities of the EU member states. These reports will have to be submitted through Eudamed—once functional—and aim to ensure that, in addition to reporting to the relevant authorities of the EU member states, other actors such as the economic operators in the supply chain will also be informed.

Among the new requirements, manufacturers (and authorized representatives) must have available within their organization at least one person responsible for regulatory compliance (“PRRC”), who possesses the requisite expertise in the field of medical devices. The PRRC is responsible for compliance with post-market surveillance and vigilance requirements.

The aforementioned EU rules are generally applicable in the European Economic Area, which consists of the 27 EU Member States plus Norway, Liechtenstein and Iceland.

Brexit

As a result of the United Kingdom leaving the EU, since January 1, 2021, the regulatory framework and regimes for medical devices in the United Kingdom and the EU have diverged. In particular, a new UKCA Mark was introduced for medical devices placed on the Great Britain market (which includes England, Scotland and Wales). Northern Ireland has adopted a hybrid approach as a result of the divergence in accordance with the Northern Ireland Protocol. Manufactures can continue placing CE marked medical devices on the Great Britain market until June 30, 2024. From July 1, 2024, transitional arrangements will apply for CE and UKCA marked medical devices placed on the Great Britain market.

Environmental Laws

The costs and effects of our compliance with applicable environmental laws during fiscal years 2022 and 2023 and the nine months ended September 30, 2024 were, and historically have been, immaterial.

Human Capital Resources

As of November 29, 2024, we had 148 employees, 146 of whom were full-time, consisting of clinical, research and development, operations, regulatory and quality, sales, marketing, technology, finance, business analytics and human resources. This included 62 employees located in the United States. From time to time, we also engage contractors, consultants and temporary employees to support our operations. None of the U.S. employees are subject to collective bargaining agreements or represented by a labor union, however, our employees in France are subject to a collective bargaining agreement. We consider our relationship with our employees to be good. On November 6, 2024, the Company’s board of directors approved a restructuring plan to reduce operating costs and better align its workforce with the needs of its business. Under the restructuring plan, the Company is reducing its workforce by approximately 113 roles (approximately 50%). The majority of the restructuring is expected to be completed in the fourth quarter of 2024.

Corporate & Available Information

We were incorporated under the laws of the State of Delaware on January 25, 2023. The mailing address of our principal executive office is 11 Huron Drive, Natick, MA 01760, and the telephone number is (508) 647-4000. Our website address is https://allurion.com/. Further corporate governance information, including our

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Code of Conduct, Corporate Governance Guidelines and the charters of our Audit Committee, Compensation Committee and Nominating and Corporate Governance Committee are available on our investor relations website under the heading “Governance Documents.”

The U.S. Securities and Exchange Commission (the “SEC”), maintains an Internet site that contains current and periodic reports, proxy and information statements, and other information regarding issuers, including us, that file electronically with the SEC at www.sec.gov. Additional information about our filings can also be obtained at our website at www.investors.allurion.com under “Financials—SEC Filings.”

We make available free of charge on our website our Annual Reports on Form 10K, Quarterly Reports on Form 10Q, Current Reports on Form 8-K and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Exchange Act, as soon as reasonably practicable after we electronically file such material with, or furnish it to, the SEC. The contents of our website are not a part of this prospectus and should not be considered to be a part of, or incorporated into, this prospectus or any of our other securities filings unless specifically incorporated herein or therein by reference.

Legal Proceedings

From time to time, we may become involved in legal proceedings or be subject to claims arising in the ordinary course of our business. We are not currently a party to any material legal proceedings. Regardless of outcome, such proceedings or claims can have an adverse impact on us because of defense and settlement costs, diversion of resources and other factors, and there can be no assurances that favorable outcomes will be obtained.

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MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following discussion and analysis includes information that our management believes is relevant to an assessment and understanding of our consolidated results of operations and financial condition. The discussion and analysis should be read together with the consolidated financial statements as of and for the three and nine months ended September 30, 2024 and September 30, 2023, and for the years ended December 31, 2023 and December 31, 2022 that are included in this prospectus. This discussion may contain forward-looking statements that involve risks and uncertainties. Our actual results may differ materially from those anticipated in these forward-looking statements as a result of various factors, including those set forth in the sections titled “Cautionary Statement Regarding Forward-Looking Statements,” “Risk Factors” in this prospectus. For purposes of this section, all references in this discussion and analysis to “Allurion,” the “Company”, “we,” “us,” or “our” refers to the business and operations of Allurion and its consolidated subsidiaries following the consummation of the Business Combination and to Legacy Allurion and its consolidated subsidiaries prior to the consummation of the Business Combination. “Legacy Allurion” refers to Allurion Technologies, LLC, which was previously known as Allurion Technologies Opco, Inc. (formerly Allurion Technologies, Inc.) prior to the consummation of the Business Combination.

Overview

Allurion is a leading medical device company that is focused on creating a best-in-class weight loss platform to treat obese and overweight patients. Our platform, the Allurion Program (the “Allurion Program”), features the world’s first and only swallowable, procedure-less intragastric balloon for weight loss (the “Allurion Balloon”) and offers artificial intelligence (“AI”)-powered remote patient monitoring tools, a proprietary behavior change program, secure messaging and video telehealth that are delivered by the Allurion Virtual Care Suite (“VCS”).

Our proprietary intragastric balloon, the Allurion Balloon, is swallowed as a capsule under the guidance of a health care provider without surgery, endoscopy, or anesthesia for placement.

The Allurion VCS is comprised of tools to support patients’ weight loss experience, which we believe benefit both patients and health care providers:

In addition to its use by Allurion Balloon patients, we believe the Allurion VCS can potentially be a platform for optimal long-term follow up after other medical and surgical weight loss interventions in the future. For example, in June 2022, we incorporated a Treatment Tracking and Clinic-Led Onboarding feature into the Allurion VCS, which enables seamless onboarding and management of patients undergoing one or multiple weight loss treatments, including gastric balloons such as the Allurion Balloon, surgery, or medications. In addition, in connection with our collaboration with Medtronic plc (“Medtronic”), we may incorporate the

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Allurion VCS in onboarding and managing Medtronic’s patients. Further, in April 2024, the Company launched the Allurion VCS in the United States for patients utilizing other weight loss treatments, including anti-obesity medications and bariatric surgery.

Our products are currently sold in Europe, the Middle East, Africa, Latin America, Canada and the Asia-Pacific region. The U.S. Food and Drug Administration (“FDA”) has approved the investigational device exemption (“IDE”), for Allurion’s AUDACITY clinical trial, a 48-week, prospective, randomized, open-label trial. We received approval of the IDE from the FDA in November 2021 to initiate the AUDACITY clinical trial in the United States. The first patient in the trial was treated in July 2022. During the third quarter of 2023, we completed the enrollment of 550 patients in the trial across 17 sites in the United States and the last patient in the trial was treated in September 2024. The results of the trial are expected to support a premarket approval submission to the FDA.

Since our inception, we have incurred significant operating losses. Our ability to generate revenue and achieve cost improvements sufficient to achieve profitability will depend on the successful further development and commercialization of our products and receipt and maintenance of regulatory approvals. We generated revenue of $26.5 million and $45.2 million for the nine months ended September 30, 2024 and 2023, respectively, and incurred a net loss of $5.6 million and $61.4 million for those same periods, respectively. We expect to continue to incur net losses for the foreseeable future as we focus on obtaining regulatory approvals for our products in new markets, reinstating regulatory approvals, refining our sales and marketing strategies, and continuing research and development efforts to further enhance our existing products. Further, following the closing of the Business Combination described below in “Recent Developments,” we have incurred, and expect to continue to incur, additional costs associated with operating as a public company. As a result, we will need additional funding for expenses related to our operating activities, including selling, marketing, general and administrative expenses and research and development expenses.

Because of the numerous risks and uncertainties associated with obtaining and maintaining regulatory approval, market acceptance of our products, product development and enhancement, and commercialization, we are unable to accurately predict the timing or amount of increased expenses or when, or if, we will be able to achieve or maintain profitability. Until such time, if ever, as we can generate substantial revenue sufficient to achieve profitability, we expect to finance our operations through a combination of equity offerings and debt financings. We may be unable to raise additional funds or enter into such other agreements or arrangements when needed on favorable terms, or at all. If we are unable to raise capital or enter into such agreements as, and when, needed, we may have to significantly delay, scale back or discontinue the further development and commercialization efforts of one or more of our products, or may be forced to reduce or terminate our operations. See the subsections titled—“Liquidity and Capital Resources” and “Recent Developments” below.

Recent Developments

Business Combination Agreement

On February 9, 2023, Allurion Technologies Opco, Inc. (formerly Allurion Technologies, Inc., “Legacy Allurion”) and Allurion Technologies, Inc. (formerly Allurion Technologies Holdings, Inc.) entered into the Business Combination Agreement (as subsequently amended on May 2, 2023, the “Business Combination Agreement”) with Compute Health Acquisition Corp. (“CPUH” or “Compute Health”), Compute Health Corp. (“Merger Sub I”) and Compute Health LLC (“Merger Sub II” and, together with Merger Sub I, the “Merger Subs”). Pursuant to the Business Combination Agreement, on August 1, 2023 (the “Closing Date”), the Mergers (as defined below) were consummated in three steps: (a) Compute Health merged with and into Allurion (the “CPUH Merger”), with Allurion surviving the CPUH Merger as a publicly listed entity (the time at which the CPUH Merger became effective, the “CPUH Merger Effective Time”) and becoming the sole owner of the Merger Subs; (b) three hours following the consummation of the CPUH Merger, Merger Sub I merged with and into Legacy Allurion (the “Intermediate Merger” and the time at which the Intermediate Merger became

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effective, the “Intermediate Merger Effective Time”), with Legacy Allurion surviving the Intermediate Merger and becoming a direct, wholly-owned subsidiary of Allurion; and (c) thereafter, Legacy Allurion merged with and into Merger Sub II (the “Final Merger” and, collectively with the CPUH Merger and the Intermediate Merger, the “Mergers”, and together with all other transactions contemplated by the Business Combination Agreement, the “Business Combination”), with Merger Sub II surviving the Final Merger and remaining a direct, wholly-owned subsidiary of Allurion (the time at which the Final Merger became effective, the “Final Merger Effective Time”). Shares of Allurion’s Common Stock (defined below) began trading on the NYSE under the ticker symbol “ALUR” on August 2, 2023. Upon completion of the Business Combination, Legacy Allurion’s business operations continued as our business operations.

The Business Combination was accounted for as a reverse capitalization in accordance with accounting principles generally accepted in the United States of America. Under this method of accounting, Compute Health, which was the legal acquirer, was treated as the “acquired” company for financial reporting purposes and Legacy Allurion was the accounting “acquirer”. Accordingly, the Business Combination was treated as the equivalent of our company issuing stock for the net assets of Compute Health, accompanied by a recapitalization. Our net assets and the net assets of Compute Health are stated at historical costs, with no goodwill or other intangible assets recorded. This determination is primarily based on the fact that, immediately following the Business Combination, Legacy Allurion stockholders had a majority of the voting power of Allurion, Legacy Allurion controlled the majority of the board seats of Allurion, and Legacy Allurion senior management comprised all of the senior management of Allurion. The equity structure has been restated in all comparative periods up to the Closing Date to reflect the number of shares of the Company’s common stock, $0.0001 par value per share (“Allurion Common Stock” or the “Company’s Common Stock”), issued to Legacy Allurion stockholders in connection with the Business Combination. As such, the shares and corresponding capital amounts and earnings per share related to Legacy Allurion’s convertible preferred stock and Legacy Allurion common stock prior to the Business Combination have been retroactively restated as shares reflecting the exchange ratio of approximately 0.9780 (the “Exchange Ratio”) established in the Business Combination. As a result of this retrospective application, certain prior period balances within the condensed consolidated financial statements have changed. Refer to Note 3, Business Combination in the notes to our unaudited interim condensed consolidated financial statements for further discussion regarding the closing of the Business Combination with Compute Health.

Note Purchase Agreement

On April 14, 2024, Allurion, RTW Investments, LP (together with its affiliates, “RTW”), as agent for the purchasers (the “Purchasers”) party thereto from time to time (RTW in such capacity, the “Principal Purchaser”), and Acquiom Agency Services LLC (“Acquiom”), as collateral agent for the Purchasers and the Principal Purchaser, entered into a Note Purchase Agreement (the “Original Note Purchase Agreement”). Subsequently, on April 16, 2024, the Company, the Principal Purchaser, the Purchasers and Acquiom entered into the First Amendment to the Original Note Purchase Agreement (the “Amendment”; the Original Note Purchase Agreement, as amended by the Amendment, the “Amended Note Purchase Agreement”).

Pursuant to the Amended Note Purchase Agreement, the Company issued and sold $48 million aggregate principal amount of convertible senior secured notes (the “Notes”) to the Purchasers in a private placement transaction. The Company used the proceeds from the issuance of the Notes to refinance its outstanding obligations under the Credit Agreement and Guaranty, dated as of August 1, 2023 (as amended by Amendment No. 1 to the Credit Agreement and Guaranty, dated as of December 29, 2023, the “Fortress Credit Agreement”) by and among Allurion, Allurion Opco, the subsidiary guarantors from time to time party thereto, the lenders from time to time party thereto in full and to pay fees and expenses in connection therewith and in connection with the transactions contemplated by the Amended Note Purchase Agreement. The Company has terminated and repaid in full the outstanding borrowings and other obligations under the Fortress Credit Agreement.

The Notes bear interest at the annual rate of 6.0%, which interest is payable quarterly in cash or, at the Company’s option, in kind for the first three years. The maturity date for the Notes is April 16, 2031. The Notes

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are guaranteed by Allurion Technologies, LLC, a Delaware limited liability company and wholly-owned subsidiary of the Company (“Allurion Opco”), and certain other current and future subsidiaries of the Company, and are secured by substantially all the assets of the Company and the guarantors.

The Notes are convertible into shares of the Company’s Common Stock, at a Purchaser’s election at any time after the earliest of (i) the date on which Stockholder Approval (as defined below) is obtained, (ii) December 31, 2025, (iii) the date of a Fundamental Change Company Notice (as defined in the Amended Note Purchase Agreement), and (iv) the Make-Whole Fundamental Change Effective Date (as defined in the Amended Note Purchase Agreement), subject to certain terms and limitations in the Amended Note Purchase Agreement, based on a conversion rate of 617.2840 shares of common stock per $1,000 principal amount of Notes (equivalent to a conversion price of approximately $1.62 per share, which represents a 35% premium to the lowest price per share in an equity financing for capital raising purposes ending on the date on which the Company has raised aggregate gross offering proceeds of at least $15,000,000 (the “Next Equity Financing”). On July 1, 2024, we consummated the Public Offering, as described elsewhere in this prospectus, which constituted a Next Equity Financing. Because the conversion price was reset in connection with the Next Equity Financing to a price below the NYSE’s “Minimum Price” (as such term is defined in Section 312.03 of the NYSE Listed Company Manual), the Amended Note Purchase Agreement provides that unless and until requisite approval of the Company’s stockholders is obtained (“Stockholder Approval”), the Company will not deliver Common Stock upon conversion of the Notes in excess of 1% of the number of shares of the Company’s Common Stock outstanding as of April 14, 2024. The Company is required to include a proposal in its definitive proxy statement on Schedule 14A seeking Stockholder Approval no later than December 31, 2025. If the Company does not obtain Stockholder Approval at such meeting, it shall call a special meeting of stockholders each 90-day period thereafter at least two times, and thereafter at each subsequent annual meeting until Stockholder Approval is obtained or the Notes are no longer outstanding; provided, that shares of Common Stock issued upon conversion of the Notes prior to obtaining Stockholder Approval shall not be entitled to vote in favor of Stockholder Approval.

Amendment to Revenue Interest Financing Agreement

On April 14, 2024, the Revenue Interest Financing Agreement (the “Original RIFA”) was amended pursuant to the Omnibus Amendment (the “RIFA Amendment”) by and among the Company, Allurion Opco, Allurion Australia Pty Ltd, a proprietary limited company organized under the laws of Australia and a wholly-owned subsidiary of the Company, the Original RIFA Investors (as defined therein) and RTW, to reflect certain modifications agreed between the parties thereto in connection with the Purchasers’ purchase of the Notes and the refinancing of the Fortress Credit Agreement. Among other things, the RIFA Amendment waived the existing event of default under the Original RIFA, increased the rate of revenue interest payments to be paid to RTW on all current and future products and digital solutions developed and to be developed by the Company (the “Royalty Rate”) for net sales less than or equal to $100 million prior to December 31, 2026 from 6% to 12%, and increased the Royalty Rate on net sales less than or equal to $100 million on or after January 1, 2027 from 10% to 12%, subject to the terms and conditions of the RIFA Amendment.

Pursuant to the Amended and Restated RTW Side Letter, on October 22, 2024, the Additional RIFA Investors notified us of their election to exercise the Investment Conversion in full. Accordingly, on October 30, 2024, we and the Additional RIFA Investors entered into the additional Revenue Interest Financing Agreement (the “Additional Revenue Interest Financing Agreement”). The Additional Revenue Interest Financing Agreement has substantially identical terms and conditions as the Original RIFA, except that the amount of financing provided by the Additional RIFA Investors to Allurion Opco under the Additional Revenue Interest Financing Agreement is equal to the Conversion Amount.

Amendment to RTW Side Letter

On April 14, 2024, we, Allurion Opco, Compute Health, Merger Sub II, RTW Master Fund, Ltd., RTW Innovation Master Fund, Ltd. and RTW Biotech Opportunities Operating Ltd. (as transferee from RTW Biotech

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Opportunities Ltd. (formerly known as RTW Venture Fund Limited)) (in each case, together with their successors and permitted assigns, the “Additional RIFA Investors”) entered into the First Amendment to Amended and Restated Letter Agreement (the “RTW Side Letter Amendment”) to reflect certain modifications to the Amended and Restated RTW Side Letter in connection with the Purchasers’ purchase of the Notes. The RTW Side Letter Amendment provides, among other things, that the Additional RIFA Investors may make a single election in certain circumstances to convert up to $7,500,000 of the purchase price that the Additional RIFA Investors paid for certain equity interests in the Company into an amount of financing provided by the Additional RIFA Investors to Allurion Opco pursuant to an additional revenue interest financing agreement with Allurion Opco, which election was made effective October 30, 2024 as described above.

Termination of Fortress Term Loan

On April 16, 2024, we terminated and repaid in full all outstanding borrowings and fees under the Fortress Credit Agreement, dated as of August 1, 2023 (as amended by the Fortress Amendment, dated as of December 29, 2023), by and among the Company, Allurion Opco, the subsidiary guarantors from time to time party thereto, the lenders from time to time party thereto (the “Lenders” and each, a “Lender”) and Fortress Credit Corp., as administrative agent for the Lenders, including the release of all guarantees and liens related thereto.

Public Offering

On June 28, 2024, the Company entered into an underwriting agreement (the “Underwriting Agreement”) with Jefferies LLC and TD Securities (USA) LLC, as representative of the several underwriters (the “Underwriters”), pursuant to which the Company agreed to issue and sell 14,406,508 shares of the Company’s Common Stock and warrants (“July 2024 Public Warrants”) to purchase up to 14,406,508 shares of the Company’s Common Stock at an offering price of $1.20 per share and accompanying warrant (the “Public Offering”). Pursuant to the Underwriting Agreement, the Company also granted the Underwriters an option exercisable for 30 days to purchase up to an additional 2,160,976 shares of Common Stock (the “Share Overallotment”) and/or 2,160,976 July 2024 Public Warrants at the public offering price. The Public Offering closed on July 1, 2024 with net proceeds received of $15.2 million after deducting underwriting discounts of $1.0 million and offering costs of $1.0 million. Additionally, on July 1, 2024, the Underwriters exercised the option with respect to the July 2024 Public Warrants in full, which resulted in the issuance of an additional 2,160,976 July 2024 Public Warrants at the closing. Further, the Underwriters exercised a portion of the option with respect to the Common Stock on July 5, 2024 for net proceeds of $2.2 million, which resulted in the issuance of 1,927,265 shares of the Company’s Common Stock at an offering price of $1.20 per share.

Private Placement

On June 28, 2024, the Company entered into a subscription agreement (the “Subscription Agreement”) with RTW, pursuant to which the Company agreed to sell to RTW 2,260,159 shares of a newly created series of preferred stock, the Series A non-voting convertible preferred stock, par value $0.0001 per share (“Series A Preferred Stock”), and 2,260,159 private placement warrants (“Private Placement Warrants”) to purchase Common Stock, equal to the per share Public Offering price for the shares of Common Stock and July 2024 Public Warrants in the Public Offering (the “Private Placement”). The Private Placement closed on July 1, 2024 with net proceeds received of $2.5 million after deducting offering costs of $0.2 million.

French Regulatory Decision

On August 6, 2024, it was announced that the Agence Nationale de Sécurité du Médicament (“ANSM”), the French regulatory authority, has suspended sales of the Allurion Balloon in France, and the Company withdrew the device from the French market. The Company submitted and has implemented a remediation plan to reduce certain risks associated with the advertising, follow-up program, and adverse events for the Allurion Balloon.

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Although the Company disagrees with ANSM’s decision, it is fully cooperating and in active dialogue with the agency regarding the Company’s remediation program prioritizing changes related to its advertising strategy, follow-up program and training programs to address ANSM’s concerns. The Company is committed to continuing its engagement with ANSM to identify a path that will enable the Company to resume the commercialization of the Allurion Balloon in France.

NYSE Continued Listing Standards

On August 12, 2024, we received a letter from NYSE notifying us that, as of August 8, 2024, for the last 30 consecutive business days, the average closing price of the Company’s common stock was less than $1.00 per share, the minimum average closing bid price required by the continued listing requirements of Rule 802.01C of the NYSE Listed Company Manual. A company can regain compliance with the minimum share price requirement at any time during the six-month cure period if, on the last trading day of any calendar month during the cure period, the company has (i) a closing share price of at least $1.00 and (ii) an average closing share price of at least $1.00 over the 30 trading-day period ending on the last trading day of that month. In the event that at the expiration of the six-month cure period, both a $1.00 closing share price on the last trading day of the cure period and a $1.00 average closing share price over the 30 trading-day period ending on the last trading day of the cure period are not attained, the NYSE will commence suspension and delisting procedures. We intend to monitor the closing bid price of our Common Stock and may, if appropriate, consider available options to regain compliance with the NYSE minimum share price requirement.

On August 29, 2024, we received written notice from the NYSE that we are not in compliance with the continued listing standard set forth in Section 802.01B of the NYSE’s Listed Company Manual because the average market capitalization of the Company was less than $50.0 million over the consecutive 30 trading-day period ended August 29, 2024 and the Company’s last reported stockholders’ equity as of August 29, 2024 was less than $50.0 million. In accordance with applicable NYSE procedures, we submitted a plan to the NYSE outlining measures designed to regain compliance with the continued listing standard within 18 months of receipt the written notice. We submitted a business plan to the NYSE demonstrating our ability to regain compliance with the NYSE’s rules. The NYSE has accepted the plan and as a result, the Company is subject to quarterly monitoring for compliance with the business plan and our common stock will continue to trade on the NYSE during the period, subject to our compliance with other NYSE continued listing requirements.

Restructuring Plan

On November 6, 2024, our board of directors (“Board”) approved a restructuring plan to reduce operating costs and better align our workforce with the needs of our business. The majority of the restructuring is expected to be completed in the fourth quarter of 2024.

Under the restructuring plan, we anticipate reducing our workforce by approximately 113 roles (approximately 50% of our workforce). In connection with the restructuring plan, we estimate that wet will incur one-time aggregate restructuring charges of approximately $3.5 million, which will be recorded primarily in the fourth quarter of 2024, related to severance payments and other employee-related costs. The cash payments related to the personnel-related restructuring will be paid primarily during the first quarter of 2025. The charges that we expect to incur in connection with the workforce reduction are subject to a number of assumptions, and actual results may differ materially. We may also incur additional costs not currently contemplated due to events that may occur as a result of, or that are associated with, the workforce reduction.

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Key Factors Affecting Our Operating Results

We believe that our performance and future success depend on many factors that present significant opportunities but also pose risks and challenges, including those discussed below and under the heading “Risk Factors” above.

Operating Segments

We operate our business in a single segment and as one reporting unit, which is how our chief operating decision maker (“CODM”), our chief executive officer, reviews financial performance and allocates resources. The CODM reviews financial information presented on a regular basis at the consolidated level for purposes of allocating resources and evaluating financial performance. Since we operate as one operating segment, all required financial segment information can be found in the consolidated financial statements.

Components of Our Results of Operations

Revenue

We derive revenue from the sale of the Allurion Balloon to customers, which are either distributors or health care providers. The Allurion Balloon is the foundation of the Allurion Program, a holistic weight loss program that offers patients the opportunity to receive, and clinic and other health care providers the ability to deliver, behavior change assistance through their use of our remote patient support and monitoring tools.

Cost of Revenue

Cost of revenue consists primarily of costs that are closely correlated or directly related to the delivery of our products, including material costs, labor costs, and depreciation expense for fixed assets.

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Operating Expenses

Sales and Marketing Expenses

Sales and marketing expenses consist primarily of salaries and related expenses (including commissions) for our sales and marketing personnel. Marketing programs consist of advertising, training events, brand building, product marketing activities and shipping costs.

Research and Development Expenses

Our research and development expenses consist of costs associated with performing research and development activities such as registering our products in various jurisdictions and performing clinical trials. These costs include salaries and benefits, stock-based compensation, non-capitalizable software development costs, product development costs, materials and supplies, clinical trial activities, registration expenses, depreciation of equipment and other outside services.

General and Administrative Expenses

General and administrative expenses consist primarily of salaries and personnel-related costs, including stock-based compensation, for our personnel in executive, information technology, finance and accounting, human resources and other administrative functions. General and administrative expenses also include legal fees relating to corporate matters; professional fees paid for accounting, auditing, consulting and tax services; insurance costs; travel expenses; office and information technology costs; and facilities, depreciation and other expenses related to general and administrative activities, which include direct or allocated expenses for rent and maintenance of facilities and utilities.

Other Income (Expense)

Interest Expense

Interest expense consists of interest expense associated with outstanding borrowings under our debt obligations as well as the amortization of debt issuance costs and discounts associated with such borrowings.

Change in Fair Value of Warrants

The change in fair value of warrants consists of the expense recognized upon the mark to market of our warrant liabilities.

Change in Fair Value of Debt

The change in fair value of debt consists of the expense recognized upon the mark to market of our convertible debt.

Change in Fair Value of Revenue Interest Financing and PIPE Conversion Option

The change in fair value of Revenue Interest Financing and PIPE Conversion Option consists of the expense recognized upon the mark to market of the Revenue Interest Financing with RTW and the issuance and mark to market of the PIPE Conversion Option. See Note 10, Fair Value Measurements for further information.

Change in Fair Value of Earn-out Liabilities

The change in fair value of earn-out liabilities consists of the gain or loss recognized upon mark to market of the contingent earn-out consideration. See Note 10, Fair Value Measurements for further information.

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Loss on extinguishment of debt

The loss on extinguishment of debt consists of the loss recognized upon the termination of our 2021 Term Loan and Fortress Term Loan.

Termination of convertible note side letters

The termination of convertible note side letters consists of the expense recognized related to the convertible note prepayment penalty and recognition of the PubCo Share liability and Base PubCo and Backstop Share liability.

Other Income, net

Other income, net consists of interest earned on our invested cash balances, which primarily consist of deposit accounts and money market funds, foreign currency transaction gains and losses and expense associated with our Success Fee derivative liability and Fortress Term Loan derivative liability. See Note 10, Fair Value Measurements, for further information.

Results of Operations

Comparison of the Three and Nine Months Ended September 30, 2024 and 2023 (unaudited)

The following table summarizes our results of operations for the three and nine months ended September 30, 2024 and 2023 (in thousands):

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Revenue

Revenue decreased $12.8 million, or 71%, to $5.4 million and decreased $18.7 million, or 41%, to $26.5 million for the three and nine months ended September 30, 2024, respectively, compared to the same periods in 2023. The decrease in revenue was primarily the result of decreased gastric balloon units sold due to macroeconomic headwinds in certain markets leading to lower re-order rates as distributors and certain accounts adjusted their inventory levels. Additionally, in August 2024, ANSM suspended sales of the Allurion balloon in France, resulting in a $1.2 million reduction to revenue for customer returns of the Allurion Balloon. The decrease in revenue was also attributable to selling less or no product to certain distributors and accounts to manage our credit risk.

Cost of Revenue

Cost of revenue decreased $2.0 million, or 47%, to $2.3 million for the three months ended September 30, 2024, and decreased $2.6 million, or 26%, to $7.5 million for the nine months ended September 30, 2024 compared to the same periods in 2023. The decrease in cost of revenue was a direct result of decreased gastric balloon units sold, partially offset by an increase in manufacturing expense, as less labor and overhead was absorbed due to lower production volumes.

Gross Profit

Gross profit decreased $10.9 million, or 78%, to $3.1 million for the three months ended September 30, 2024, and decreased $16.1 million, or 46%, to $19.0 million for the nine months ended September 30, 2024 compared to the same periods in 2023. The decrease in gross profit was primarily the result of an increase in our manufacturing expense, as less labor and overhead was absorbed due to lower production volumes, as well as a decrease in revenue and sales volume of our gastric balloon system. Additionally, in August 2024, ANSM suspended sales of the Allurion balloon in France, resulting in a $1.2 million reduction to revenue for customer returns of the Allurion Balloon.

Operating Expenses

Sales and Marketing Expenses

Sales and marketing expenses decreased $8.8 million, or 63%, to $5.2 million for the three months ended September 30, 2024, compared to the same period in 2023. The decrease in sales and marketing expenses was the result of a $5.3 million decrease in marketing expenditures driven by a reorganization of our selling and marketing spend focusing on more efficient channels and geographies, a $1.9 million decrease in shipping and logistics expenses, a $1.3 million decrease in salaries and related benefits, a $0.2 million decrease in meeting expenses, and a $0.1 million decrease in travel expenses.

Sales and marketing expenses decreased $18.1 million, or 50%, to $18.0 million for the nine months ended September 30, 2024, as compared to the same period in 2023. The decrease in sales and marketing expenses was the result of a $9.8 million decrease in marketing spend, a $3.4 million decrease in shipping and logistics expenses, a $2.8 million decrease in salaries, related benefits, and consulting costs, a $1.1 million decrease in meeting expenses, and a $0.6 million decrease in travel expenses.

Research and Development Expenses

Research and development expenses decreased $4.0 million, or 55%, to $3.2 million for the three months ended September 30, 2024, compared to the same period in 2023. The decrease in research and development expenses was primarily the result of a $2.4 million decrease in costs related to the AUDACITY clinical trial as it nears completion, a $1.0 million decrease attributable to salaries and related benefit costs due to lower headcount, and a $0.4 million decrease in outside consulting costs.

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Research and development expenses decreased $8.4 million, or 39%, to $13.2 million for the nine months ended September 30, 2024, compared to the same period in 2023. The decrease in research and development expenses was primarily the result of a $4.8 million decrease in costs related to the AUDACITY clinical trial as it nears completion, a $2.4 million decrease attributable to salaries and related benefit costs due to lower headcount, and a $0.9 million decrease in outside consulting costs. We expect research and development expenses to continue to decrease in 2024 as our AUDACITY trial progresses toward completion.

General and Administrative Expenses

General and administrative expenses decreased $11.9 million, or 63%, to $7.0 million for the three months ended September 30, 2024, compared to the same period in 2023. The decrease in general and administrative expenses was primarily the result of a $4.6 million decrease in stock based compensation as the prior period consisted of a $4.9 million one-time charge as a result of the Business Combination, a $3.4 million decrease in insurance expense as the prior period consisted of a $3.6 million one-time insurance charge related to the Business Combination, a $1.8 million decrease attributable to salaries, benefits, and related costs, a $1.0 million decrease in bad debt expense, and a $0.8 million decrease in legal and professional fees, primarily driven by $1.2 million in one-time charges in the prior period related to the Business Combination.

General and administrative expenses decreased $9.9 million, or 32%, to $20.7 million for the nine months ended September 30, 2024, compared to the same period in 2023. The decrease in general and administrative expenses was primarily the result of a $4.1 million decrease in stock based compensation as the prior period consisted of a $4.9 million one-time charge as a result of the Business Combination, a $3.9 million decrease in bad debt expense, a $2.9 million decrease in insurance expense as the prior period consisted of a $3.6 million one-time insurance charge related to the Business Combination, partially offset by an increase in director and officer insurance in the current year, and a $0.6 million decrease attributable to salaries, benefits, and related costs. These decreases were partially offset by $1.7 million of legal and professional fees, driven by $1.4 million of one-time legal fees in connection with the Amended Note Purchase Agreement with RTW and $0.9 million of offering costs expensed as part of the Public Offering and Private Placement in July 2024.

Other income (expense)

Interest Expense

Interest expense decreased $2.6 million, or 100%, to zero for the three months ended September 30, 2024 and $5.1 million, or 69%, to $2.3 million for the nine months ended September 30, 2024, compared to the same periods in 2023. The decrease in interest expense was due the termination of our Fortress Term Loan in April 2024, as well as a reduction in principal of our Fortress Term Loan as compared to our 2021 Term Loan during the comparable nine month period.

Change in Fair Value of Warrants 

The $9.7 million gain and $14.2 million gain attributable to the change in fair value of warrants for the three and nine months ended September 30, 2024, respectively, compared to the same periods in 2023, were due to mark to market fluctuations in our warrant liabilities due to the decline in value of our Common Stock during the periods, as well as the issuance of the July 2024 Public Warrants and Private Placement Warrants on July 1, 2024, for which there were no comparable mark to market fluctuations in the prior period.

Change in Fair Value of Debt 

The $1.8 million and $10.0 million gain attributable to the change in fair value of debt for each of the three and nine months ended September 30, 2024, compared to the same periods in 2023, was due to mark to market fluctuations in our convertible debt.

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Change in Fair Value of Revenue Interest Financing and PIPE Conversion Option

The $11.1 million loss attributable to the change in fair value of the Revenue Interest Financing and PIPE Conversion Option for the three months ended September 30, 2024, compared to the same period in 2023, was primarily due to a $6.7 million loss related to the change in fair value of the Revenue Interest Financing and a $4.4 million loss on PIPE Conversion Option primarily driven by a decrease in the discount rate. The $9.6 million loss attributable to the change in fair value of the Revenue Interest Financing and PIPE Conversion Option for the nine months ended September 30, 2024, compared to the same period in 2023, was primarily due to a $5.4 million loss related to the change in fair value in the Revenue Interest Financing from December 31, 2023 to September 30, 2024 and a $4.3 million loss in the change in fair value of the PIPE Conversion Option from December 31, 2023 to September 30, 2024.

Change in Fair Value of Earn-Out Liabilities

The $2.3 million gain attributable to the change in the fair value of earn-out liabilities for the three months ended September 30, 2024 and the $22.1 million gain attributable to the change in the fair value of the earn-out liabilities for the nine months ended September 30, 2024 were due to the decrease in the Company’s stock price from December 31, 2023 to September 30, 2024.

Loss on extinguishment of debt

Loss on extinguishment of debt decreased $3.9 million, or 100%, to zero for the three months ended September 30, 2024, compared to the same period in 2023. The decrease was due to a $3.9 million loss on the extinguishment of the 2021 Term Loan with Runway during the comparable period. Loss on extinguishment of debt increased $4.8 million, or 122%, to $8.7 million for the nine months ended September 30, 2024, compared to the same period in 2023. This increase was due to the $8.7 million loss on extinguishment of our Fortress Term Loan in April 2024, compared to the $3.9 million loss on the extinguishment of our 2021 Term Loan with Runway in August 2023.

Termination of convertible note side letters

Termination of convertible note side letters decreased $9.5 million, or 100%, to zero for the three months ended September 30, 2024 and $17.6 million, or 100%, to zero for the nine months ended September 30, 2024, compared to the same periods in 2023. The decreases were primarily due to changes in the PubCo Share Liability, Base PubCo Shares and Backstop Shares liabilities driven by the use of the full backstop during the comparable periods for which there were no comparable liabilities in the current period.

Other Income, Net

The change in Other income, net for the three months ended September 30, 2024 compared to the same period in 2023 was a gain of $0.4 million attributable to a $0.4 million gain related to fluctuations in exchange rates of foreign currencies. The change in Other income, net for the nine months ended September 30, 2024 compared to the same period in 2023 was a gain of $1.8 million, primarily driven by the $2.1 million write-off of the term loan derivative liability to zero in connection with the termination of the Fortress Term Loan and a $1.1 million gain in interest income, partially offset by a $1.1 million loss related to the Amended Note Purchase Agreement.

Provision for Income Taxes

We recorded a provision for income taxes of $0.1 million and $0.2 million for the three and nine months ended September 30, 2024, respectively. These provisions for income taxes are due to net income in certain foreign jurisdictions.

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Comparison of the Years Ended December 31, 2023 and 2022

The following table summarizes our results of operations for the years ended December 31, 2023 and 2022 (in thousands):