AEON Biopharma (AEON) 10-K29 Mar 242023 FY Annual reportFinancial data

Company Profile

Document and Entity Information

Document and Entity Information - USD ($) $ in Millions	12 Months Ended
Document and Entity Information - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Mar. 26, 2024	Jun. 30, 2023
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2023
Document Transition Report	false
Entity File Number	001-40021
Entity Registrant Name	AEON Biopharma, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	85-3940478
Entity Address, Address Line One	5 Park Plaza
Entity Address, Adress Line Two	Suite 1750
Entity Address, City or Town	Irvine
Entity Address State Or Province	CA
Entity Address, Postal Zip Code	92614
City Area Code	949
Local Phone Number	354-6499
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
ICFR Auditor Attestation Flag	false
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Public Float				$ 14.2
Entity Common Stock, Shares Outstanding			37,788,858
Entity Central Index Key	0001837607
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	FY
Auditor Firm ID	185	42
Auditor Name	KPMG LLP	Ernst & Young LLP
Auditor Location	San Diego, California	Irvine, California
Class A member
Title of 12(b) Security	Class A common stock, $0.0001 par value per share
Trading Symbol	AEON
Security Exchange Name	NYSEAMER
Warrants
Title of 12(b) Security	Warrants to purchase Class A common stock
Trading Symbol	AEON WS
Security Exchange Name	NYSEAMER

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	5 Months Ended
CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Current assets:
Cash	$ 5,158	$ 9,746
Prepaid expenses and other current assets	1,064	92
Total current assets	6,222	9,838
Property and equipment, net	332	431
Operating lease right-of-use asset	262	475
Other assets	29	34
Total assets	6,845	10,778
Current liabilities:
Accounts payable	3,388	7,805
Accrued clinical trials expenses	5,128	2,051
Accrued compensation	943	1,112
Other accrued expenses	3,590	740
Current portion of convertible notes at fair value, including related party amount of $0 and $38,834 at December 31, 2023 and December 31, 2022, respectively		70,866
Total current liabilities	13,049	82,574
Convertible notes at fair value, including related party amount of $0 and $23,132, at December 31, 2023 and December 31, 2022, respectively		60,426
Operating lease liability		242
Warrant liability	1,447
Contingent consideration liability	104,350
Embedded forward purchase agreements and derivative liabilities	41,043
Total liabilities	159,889	143,242
Commitments and contingencies
Convertible preferred stock issuable in series, $0.0001 par value; 44,666,035 shares authorized as of December 31, 2022; 21,257,708 shares issued and outstanding at December 31, 2022; liquidation preference of $141,920 at December 31, 2022		137,949
AEON Biopharma, Inc. stockholders' deficit:
Class A common stock, $0.0001 par value; 500,000,000 and 207,450,050 shares authorized, 37,159,600 and 138,848,177 shares issued and 37,159,600 and 138,825,356 shares outstanding at December 31, 2023 and December 31, 2022, respectively	4	14
Additional paid-in capital	381,264	187,348
Subscription receivables	(60,710)
Accumulated deficit	(473,602)	(474,839)
Treasury stock, at cost, 0 and 22,821 shares at December 31, 2023 and December 31, 2022, respectively		(23)
Total AEON Biopharma, Inc. stockholders' deficit	(153,044)	(287,500)
Non-controlling interest		17,087
Total stockholders' deficit	(153,044)	(270,413)
Total liabilities, convertible preferred stock and stockholders' deficit	$ 6,845	$ 10,778
Financial Designation, Predecessor and Successor [Fixed List]	Successor

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Related Party Transaction [Line Items]
Current portion of convertible notes at fair value, related party amount	$ 0	$ 38,834
Convertible preferred stock issuable in series, par value	$ 0.0001	$ 0.0001
Convertible preferred stock issuable in series, shares authorized		44,666,035
Convertible preferred stock issuable in series, shares issued		21,257,708
Convertible preferred stock issuable in series, shares outstanding		21,257,708
Convertible preferred stock issuable in series, liquidation preference		$ 141,920
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	500,000,000	207,450,050
Common stock, shares issued	37,159,600	138,848,177
Common stock, shares outstanding	37,159,600	138,825,356
Treasury Stock, shares	0	22,821
Related Party [Member]
Related Party Transaction [Line Items]
Convertible notes at fair value, related party amount	$ 0	$ 23,132

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE (LOSS) INCOME - USD ($) $ in Thousands	5 Months Ended	7 Months Ended	12 Months Ended
	Dec. 31, 2023	Jul. 21, 2023	Dec. 31, 2022
Operating expenses:
Selling, general and administrative	$ 9,949	$ 9,841	$ 13,675
Research and development	13,243	19,803	34,754
Change in fair value of contingent consideration	(52,750)
Total operating costs and expenses	(29,558)	29,644	48,429
(Loss) income from operations	29,558	(29,644)	(48,429)
Other (loss) income:
Change in fair value of convertible notes		(19,359)	(4,416)
Change in fair value of warrants	2,318
Change in fair value of embedded forward purchase agreements and derivative liabilities	(8,366)	(11,789)
Other income, net	536	114	289
Total other (loss) income, net	(5,512)	(31,034)	(4,127)
(Loss) income before taxes	24,046	(60,678)	(52,556)
Income taxes	0	0	0
(Loss) income and comprehensive (loss) income	$ 24,046	$ (60,678)	$ (52,556)
Basic net (loss) income per share (in dollars per share)	$ 0.65	$ (0.44)	$ (0.38)
Diluted net (loss) income per share (in dollars per share)	$ 0.65	$ (0.44)	$ (0.38)
Weighted average shares of common stock outstanding used to compute basic net loss per share	37,159,600	138,848,177	138,848,177
Weighted average shares of common stock outstanding used to compute diluted net loss per share	37,159,600	138,848,177	138,848,177
Financial Designation, Predecessor and Successor [Fixed List]	Successor

CONSOLIDATED STATEMENTS OF CONV

CONSOLIDATED STATEMENTS OF CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' DEFICIT - USD ($) $ in Thousands	Convertible Preferred Stock	Common Stock	Additional Paid-in Capital	Subscription Receivables	Accumulated Deficit	Treasury Stock	Non-controlling Interest	Total
Temporary equity balance at the beginning (in shares) at Dec. 31, 2021	21,257,708
Temporary equity balance at the beginning at Dec. 31, 2021	$ 137,949
Balance at the beginning at Dec. 31, 2021		$ 14	$ 187,348		$ (422,283)	$ (23)	$ 11,120	$ (223,824)
Balance at the beginning (in shares) at Dec. 31, 2021		138,848,177				(22,821)
Net (loss) income					(52,556)			(52,556)
Stock-based compensation expense							5,967	$ 5,967
Temporary equity balance at the end (in shares) at Dec. 31, 2022	21,257,708							21,257,708
Temporary equity balance at the end at Dec. 31, 2022	$ 137,949
Balance at the ending (in shares) at Dec. 31, 2022		138,848,177				(22,821)
Balance at the ending at Dec. 31, 2022		$ 14	187,348		(474,839)	$ (23)	17,087	$ (270,413)
Net (loss) income					(60,678)			(60,678)
Stock-based compensation expense							3,235	3,235
Debt extinguishment due to warrant modification			17,036					17,036
Temporary equity balance at the end (in shares) at Jul. 21, 2023	21,257,708
Temporary equity balance at the end at Jul. 21, 2023	$ 137,949
Balance at the ending (in shares) at Jul. 21, 2023		138,848,177				(22,821)
Balance at the ending at Jul. 21, 2023		$ 14	204,384		(535,517)	$ (23)	$ 20,322	(310,820)
Balance at the ending (in shares) at Dec. 31, 2023		37,159,600
Balance at the ending at Dec. 31, 2023		$ 4	381,264	$ (60,710)	(473,602)			$ (153,044)
Financial Designation, Predecessor and Successor [Fixed List]								Successor
Balance at the beginning at Jul. 22, 2023		$ 4	377,498	(60,710)	(497,648)			$ (180,856)
Balance at the beginning (in shares) at Jul. 22, 2023		37,159,600
Net (loss) income					24,046			24,046
Stock-based compensation expense			3,766					3,766
Balance at the ending (in shares) at Dec. 31, 2023		37,159,600
Balance at the ending at Dec. 31, 2023		$ 4	$ 381,264	$ (60,710)	$ (473,602)			$ (153,044)

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	5 Months Ended	7 Months Ended	12 Months Ended
	Dec. 31, 2023	Jul. 21, 2023	Dec. 31, 2022
Cash flows from operating activities:
Net (loss) income	$ 24,046	$ (60,678)	$ (52,556)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	45	54	68
Write-off of deferred offering costs			331
Stock-based compensation expense	3,766	3,235	5,892
Change in fair value of convertible notes		19,359	4,416
Change in fair value of warrants	(2,318)
Change in fair value of embedded forward purchase agreements and derivative liabilities	8,366	11,789
Change in fair value of contingent consideration	(52,750)
Other			(3)
Changes in operating assets and liabilities:
Prepaid expenses and other current assets	(693)	36	(66)
Accounts payable	(4,342)	(248)	6,613
Accrued expenses and other liabilities	(2,204)	4,736	(105)
Other assets and liabilities	3	(28)	(174)
Net cash used in operating activities	(26,081)	(21,745)	(35,584)
Cash flows from investing activities:
Purchases of property and equipment			(306)
Net cash used in investing activities			(306)
Cash flows from financing activities:
Proceeds from issuance of convertible notes		14,000	44,500
Repayment of convertible notes			(3,992)
Net cash provided by financing activities		14,000	40,508
Net (decrease) increase in cash	$ (26,081)	(7,745)	4,618
Cash at beginning of period		9,746	5,128
Cash at end of period			9,746
Non-cash financing activities:
Financial Designation, Predecessor and Successor [Fixed List]	Successor
Predecessor [Member]
Cash flows from financing activities:
Cash at beginning of period	$ 2,001	9,746
Cash at end of period		2,001	$ 9,746
Successor [Member]
Cash flows from financing activities:
Cash at beginning of period	31,238
Cash at end of period	$ 5,157	$ 31,238

Organization

Organization	12 Months Ended
Organization	Dec. 31, 2023
Organization
Organization	Note 1. Organization Description of Business AEON Biopharma, Inc. (formerly known as Priveterra Acquisition Corp.; “AEON” or the “Company”) is a biopharmaceutical company focused on developing its proprietary botulinum toxin complex, ABP-450 (prabotulinumtoxinA) injection (“ABP-450”), for debilitating medical conditions. The Company is headquartered in Irvine, California. On July 21, 2023 (the “Closing Date”), the Company completed the acquisition of AEON Biopharma Sub, Inc. (formerly known as AEON Biopharma, Inc.) (“Old AEON”) pursuant to the definitive agreement dated December 12, 2022 (the “Business Combination Agreement”), as amended April 27, 2023, by and among Priveterra Acquisition Corp. (“Priveterra”), Priveterra’s wholly-owned subsidiary, Priveterra Merger Sub, Inc., and Old AEON. Old AEON was incorporated in Delaware in February 2012 under the name Alphaeon Corporation as a wholly-owned subsidiary of Strathspey Crown Holdings Group, LLC (“SCH”). On December 18, 2019, the Company changed its name to “AEON Biopharma, Inc.” On the Closing Date, Old AEON merged with Priveterra Merger Sub, Inc., with Old AEON surviving the merger as a wholly-owned subsidiary of the Company. Also on the Closing Date, the Company changed its name from “Priveterra Acquisition Corp.” to “AEON Biopharma, Inc.” and is referred to herein as “AEON,” or the “Company.” Unless the context otherwise requires, references to “Priveterra” herein refer to the Company prior to the Closing Date. Under the Business Combination Agreement, the Company agreed to acquire all outstanding equity interests of Old AEON for approximately 16,500,000 shares of Class A common stock, par value $0.0001 per share (“common stock”), which Old AEON’s stockholders received in the form of shares of common stock of the Company (the consummation of the Merger and the other transactions contemplated by the Business Combination Agreement, collectively, the “Merger”). In addition, following the closing of the Merger (the “Closing”), certain AEON stockholders will be issued up to 16,000,000 additional shares of common stock to the extent certain milestones are achieved. Prior to the Closing, Priveterra shares were listed on Nasdaq as “PMGM.” The post-Merger Company common stock and warrants commenced trading on the NYSE American under the symbols “AEON” and “AEON WS,” respectively, on July 24, 2023. See Note 3 Forward Merger Liquidity and Going Concern The accompanying consolidated financial statements have been prepared on a basis that assumes the Company will continue as a going concern. The Company has experienced recurring losses from operations and has a net capital deficiency and negative cash flows from operations since its inception. As of December 31, 2023, the Successor reported cash of $5.2 million and an accumulated deficit of $473.6 million. The Company expects to incur losses and use cash in its operations for the foreseeable future. Any further development of ABP-450 for any indication, including the completion of the Phase 2 open-label extension study in migraine, any Phase 3 trials for migraine, and any additional studies in cervical dystonia, will require additional funding, which may not be available to us on reasonable terms, or at all. As a result of these conditions, management has concluded that there is substantial doubt about the Company’s ability to continue as a going concern and to meet its obligations as they become due within one year after the date that these consolidated financial statements are issued. The Company expects to seek additional funding in the form of equity financings or debt, however, there can be no assurance that such efforts will be successful or that, in the event that they are successful, the terms and conditions of such financing will be commercially acceptable. Furthermore, the use of equity as a source of financing would dilute existing shareholders. The preparation of these consolidated financial statements does not include any adjustments that may result from the outcome of this uncertainty. This basis of accounting contemplates the recovery of the Company ’ ’ The Company’s future operations are highly dependent on a combination of factors, including (1) the success of its research and development programs; (2) the timely and successful completion of any additional financing; (3) the development of competitive therapies by other biotechnology and pharmaceutical companies; (4) the Company’s ability to manage growth of the organization; (5) the Company’s ability to protect its technology and products; and, ultimately (6) regulatory approval and successful commercialization and market acceptance of its product candidates.

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
Summary of Significant Accounting Policies	Dec. 31, 2023
Summary of Significant Accounting Policies
Summary of Significant Accounting Policies	Note 2. Summary of Significant Accounting Policies Basis of Presentation The accompanying consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America (“U.S. GAAP”). The consolidated financial statements include the accounts of the Company and its controlled subsidiaries. On July 21, 2023, AEON completed the Merger with Old AEON, with Old AEON surviving the merger as a wholly-owned subsidiary of the Company, the accounting acquirer. The transaction was accounted for as a forward merger asset acquisition. Unless the context otherwise requires, the “Company,” for periods prior to the Closing, refers to Old AEON, AEON Biopharma Sub, Inc. (“Predecessor”), and for the periods after the Closing, refers to AEON Biopharma, Inc., including AEON Biopharma Sub, Inc. (“Successor”). As a result of the Merger, the results of operations, financial position and cash flows of the Predecessor and Successor are not directly comparable. AEON Biopharma Sub, Inc. was deemed to be the predecessor entity. Accordingly, the historical financial statements of AEON Biopharma Sub, Inc. became the historical financial statements of the combined Company, upon the consummation of the Merger. As a result, the financial statements included in this report reflect (i) the historical operating results of AEON Biopharma Sub, Inc. prior to the Merger and (ii) the combined results of the Company, including AEON Biopharma Sub, Inc., following the Closing. The accompanying financial statements include a Predecessor period, which includes the period through July 21, 2023 concurrent with the Merger, and a Successor period from July 22, 2023 through December 31, 2023. A black line between the Successor and Predecessor periods has been placed in the consolidated financial statements and in the tables to the notes to the consolidated financial statements to highlight the lack of comparability between these two periods. Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates, judgments and assumptions that affect the amounts reported in the financial statements and disclosures made in the accompanying notes. The Company’s most significant estimates relate to the research and development accruals, valuation of common stock and related stock-based compensation, and the fair values of the contingent consideration, forward purchase agreements, in-process research and development, warrant liabilities, convertible notes, among others. Although the Company bases estimates on historical experience, knowledge of current events and actions it may undertake in the future, and on various other assumptions that are believed to be reasonable, the results of which form the basis for making judgments over the carrying values of assets and liabilities, this process may result in actual results differing materially from those estimated amounts used in the preparation of the financial statements. Segment Reporting Operating segments are identified as components of an enterprise about which separate discrete financial information is available for evaluation by the chief operating decision-maker in making decisions regarding resource allocation and assessing performance. The Company provides segment financial information and results for its segments based on the segregation of revenues and expenses that its chief operating decision makers review for purposes of allocating resources and evaluating its financial performance. As of December 31, 2023 and December 31, 2022, the Company operates and manages its business as one operating and reportable segment. Risk and Uncertainties The Company is subject to risks common to early-stage companies in the pharmaceutical industry including, but not limited to, dependency on the clinical and commercial success of its current and any future product candidates, ability to obtain regulatory approval of its current and any future product candidates, the need for substantial additional financing to achieve its goals, uncertainty of broad adoption of its approved products, if any, by physicians and patients and significant competition. The Company relies on Daewoong Pharmaceutical Co., Ltd. (“Daewoong”), a South Korean pharmaceutical manufacturer, as an exclusive and sole supplier to manufacture the Company’s source material for product candidates. Any termination or loss of significant rights, including exclusivity, under the Company’s license and supply agreement with Daewoong (the “Daewoong Agreement”) would materially and adversely affect the Company’s commercialization of its products. See Note 7 Commitments and Contingencies Property and Equipment Property and equipment are carried at cost less accumulated depreciation and amortization. The cost of property and equipment is depreciated over the estimated useful lives of the respective assets. The Company’s furniture and fixtures are depreciated on a straight-line basis over a period of seven years. Equipment is depreciated over a useful life of five years. Leasehold improvements are amortized over the lesser of the estimated useful life of the asset or the related lease term. Property and equipment, net, as of December 31, 2022 and December 31, 2023 are as follows (in thousands): Successor Predecessor December 31, December 31, 2023 2022 Furniture and fixtures $ 199 $ 199 Equipment 237 237 Leasehold improvements 66 66 Property and equipment 502 502 Accumulated depreciation (170) (71) Property and equipment, net $ 332 $ 431 Other Accrued Expenses December 31, 2023 2022 Successor Predecessor Legal expenses $ 1,867 $ — Excise tax liability 569 — Operating lease liability - short term portion 278 257 Daewoong vial usage 33 202 Remaining other accrued expenses 843 281 Total other accrued expenses $ 3,590 $ 740 Convertible Notes (Predecessor) The Company elected to account for its Predecessor convertible promissory notes at fair value at inception and at each subsequent reporting date. Subsequent changes in fair value were recorded as a component of non-operating loss in the Predecessor’s consolidated statements of operations and comprehensive (loss) income or as a component of other comprehensive (loss) income for changes related to instrument-specific credit risk. As a result of electing the fair value option, direct costs and fees related to the convertible promissory notes are expensed as incurred. The convertible promissory notes were converted into shares of the Company’s common stock at the Closing. Contingent Consideration (Successor) The Company accounts for its contingent consideration as either equity-classified or liability-classified instruments based on an assessment of the Contingent Consideration Shares specific terms (as further defined in Note 6) and applicable authoritative guidance in ASC 480, Distinguishing Liabilities from Equity (“ASC 480”) and ASC 815, Derivatives and Hedging (“ASC 815”). Based on the appropriate guidance, the Company determined that the Contingent Consideration Shares would be classified as a liability on the Successor’s consolidated balance sheets and remeasured at each reporting period with changes to fair value recorded to the Successor’s consolidated statements of operations and comprehensive (loss) income. Forward Purchase Agreements (Successor) Based on the applicable guidance in ASC 480, ASC 815, ASC 505, Equity (“ASC 505”) and Staff Accounting Bulletin Topic 4.E, Receivables from Sale of Stock (“SAB 4E”), the Company has determined that each of its forward purchase agreements entered in connection with the Merger is a freestanding hybrid financial instrument comprising a subscription receivable and embedded features, which have been bifurcated and accounted for separately as derivative instruments. The Company has recorded the derivatives as liabilities and measured them at fair value with the initial value of the derivative recorded as a loss “on the line” in the Successor’s opening accumulated deficit. On the line describes those transactions triggered by the consummation of the Merger that are not recognized in the consolidated financial statements of the Predecessor or the Successor as they are not directly attributable to either period but instead were contingent on the Merger. For more information, see Note 3 Forward Merger Warrants (Successor) The Company accounts for warrants as either equity-classified or liability-classified instruments based on an assessment of the warrant’s specific terms and applicable authoritative guidance in ASC 480 and ASC 815. The assessment considers whether the warrants are freestanding financial instruments and meet all of the requirements for equity classification, including whether the warrants are indexed to the Company’s own shares of common stock, among other conditions for equity classification. This assessment is conducted at the time of warrant issuance and as of each subsequent quarterly period end date while the warrants are outstanding. For issued or modified warrants that meet all of the criteria for equity classification, the warrants are required to be recorded as a component of additional paid-in capital at the time of issuance. For issued or modified warrants that do not meet all the criteria for equity classification, the warrants are required to be recorded at their initial fair value on the date of issuance, and each balance sheet date thereafter until settlement. Changes in the estimated fair value of the warrants are recognized in the consolidated statements of operations and comprehensive (loss) income. Convertible Preferred Stock (Predecessor) The Company recorded its Predecessor convertible preferred stock at their respective issuance price, less issuance costs on the dates of issuance. The convertible preferred stock is classified outside of permanent equity as temporary equity in the accompanying Predecessor’s consolidated balance sheets. Although the convertible preferred stock is not redeemable at the holder’s option, upon certain change in control events that are outside of the Company’s control, including liquidation, sale or transfer of control of the Company, holders of the convertible preferred stock may have the right to receive their liquidation preference to any distribution of the proceeds under the terms of the Company’s amended and restated certificate of incorporation. The Company has not adjusted the carrying values of the convertible preferred stock to the liquidation preferences of such shares since it is uncertain whether or when a redemption event will occur. Subsequent adjustments to increase the carrying values to the redemption values will be made only when it becomes probable that such redemption will occur. As part of the Merger, each share of Old AEON common stock issued with respect to the Old AEON convertible preferred stock was converted into approximately 2.328 shares of common stock and the right to receive a pro-rata portion of the contingent consideration. Fair Value of Financial Instruments Fair value is defined as the exchange price that would be received for an asset or an exit price paid to transfer a liability in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Valuation techniques used to measure fair value must maximize the use of observable inputs and minimize the use of unobservable inputs. Fair value measurements are based on a three-tiered valuation hierarchy, which is classified and disclosed by the Company in one of the three categories as follows: · Level 1 — Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities; · Level 2 — Inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities in active markets; quoted prices in markets that are not active; or other inputs that are observable, either directly or indirectly, or can be corroborated by observable market data for substantially the full term of the asset or liability; and · Level 3 — Prices or valuation techniques that require unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. The categorization of a financial instrument within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement. Leases The Company determines whether a contract is, or contains, a lease at inception. Right-of-use (“ROU”) assets represent the Company’s right to use an underlying asset during the lease term, and lease liabilities represent the Company’s obligation to make lease payments arising from the lease. ROU assets and lease liabilities are recognized at lease commencement based upon the estimated present value of unpaid lease payments over the lease term using the Company’s incremental borrowing rate applicable to the underlying asset unless the implicit rate is readily determinable. The Company determines the lease term as the noncancellable period of the lease, and may include options to extend or terminate the lease when it is reasonably certain that the Company will exercise that option. Leases with a term of 12 months or less are not recognized on the balance sheets. Research and Development Expenses Research and development costs are expensed as incurred. Research and development expenses consist primarily of costs associated with clinical studies including clinical trial design, clinical site reimbursement, data management, travel expenses and the cost of products used for clinical trials and internal and external costs associated with the Company’s regulatory compliance and quality assurance functions, including the costs of outside consultants and contractors that assist in the process of submitting and maintaining regulatory filings, and overhead costs. Additionally, research and development expenses include employee compensation, including stock-based compensation, supplies, consulting, prototyping, testing, materials, travel expenses and an allocation of facility overhead expenses. Costs incurred in obtaining technology licenses are charged to acquired in-process research and development (“IPR&D”) if the technology licensed has not reached technological feasibility and has no alternative future use. The acquired IPR&D recorded at the Closing was recorded “on the line” in the Successor’s opening accumulated deficit. The Company accrues the expenses for its clinical trial activities performed by third parties, including clinical research organizations and other service providers, based upon estimates of the work completed over the life of the individual study in accordance with associated agreements. The Company determines these estimates through discussion with internal personnel and outside service providers as to progress or stage of completion of trials or services pursuant to contracts with clinical research organizations and other service providers and the agreed-upon fee to be paid for such services. Payments made to outside service providers in advance of the performance of the related services are recorded as prepaid expenses and other current assets until the services are rendered. There have been no material adjustments to the Company’s estimates for clinical trial expenses through December 31, 2022 (Predecessor) and December 31, 2023 (Successor). Stock-Based Compensation The Company recognizes compensation expense for all share-based awards. The Company accounts for stock-based compensation as measured at grant date, based on the fair value of the award. The Company measures the fair value of awards granted using the Black-Scholes option pricing model, which requires the input of subjective assumptions, including the estimated fair value of common stock, the expected volatility of the Company’s common stock, expected risk-free interest rate, and the option’s expected life. The Company also evaluates the impact of modifications made to the original terms of equity awards when they occur. The fair value of equity awards that are expected to vest is amortized on a straight-line basis over the requisite service period. Stock-based compensation expense is recognized net of actual forfeitures when they occur, as an increase to additional paid-in capital or noncontrolling interest in the consolidated balance sheets and in selling, general and administrative or research and development expenses in the consolidated statements of operations and comprehensive (loss) income. All stock-based compensation costs are recorded in the consolidated statements of operations and comprehensive (loss) income based upon the underlying employee’s role within the Company. Noncontrolling Interest (Predecessor) ABP Sub Inc., the Predecessor’s wholly owned subsidiary, granted stock options to certain employees and nonemployee consultants of ABP Sub Inc. The Company accounts for stock-based compensation expense recognized by ABP Sub Inc. as an increase in noncontrolling interest in the accompanying consolidated financial statements. At the Closing, all such shares were either canceled or converted into AEON shares. See Note 11 Share-based Compensation Income Taxes The Company accounts for income taxes under the asset and liability method, which requires, among other things, that deferred income taxes be provided for temporary differences between the tax basis of the Company’s assets and liabilities and their financial statement reported amounts. In addition, deferred tax assets are recorded for the future benefit of utilizing net operating losses and research and development credit carryforwards and are measured using the enacted tax rates and laws that will be in effect when such items are expected to reverse. A valuation allowance is provided against deferred tax assets unless it is more likely than not that they will be realized. The Company records uncertain tax positions on the basis of a two-step process whereby (i) it determines whether it is more likely than not that the tax positions will be sustained on the basis of the technical merits of the position and (ii) for those tax positions that meet the more-likely-than-not recognition threshold, it recognizes the largest amount of tax benefit that is more than 50 percent likely to be realized upon ultimate settlement with the related tax authority. The Company recognizes interest and penalties related to unrecognized tax benefits within the income tax expense line in the accompanying consolidated statements of operations and comprehensive (loss) income. Any accrued interest and penalties related to uncertain tax positions will be reflected as a liability in the consolidated balance sheets. Net Loss Per Share Attributable to Common Stockholders Prior to the Merger, the Predecessor calculated basic and diluted net loss per share to common stockholders in conformity with the two-class method required for companies with participating securities. The Company considered all series of convertible preferred stock to be participating securities as they participate in any dividends declared by the Company. Under the two-class method, undistributed earnings allocated to these participating stockholders were subtracted from net income in determining net income attributable to common stockholders. Net loss attributable to common stockholders was not allocated to convertible preferred stock as the holders of convertible preferred stock did not have a contractual obligation to share in losses. Subsequent to the Merger, the Company only has one class of shares. Basic net loss per share is computed by dividing the net loss attributable to common stockholders by the weighted average number of shares of common stock outstanding during the period, without consideration for potentially dilutive shares of common stock in Predecessor periods. For Predecessor periods, diluted net loss per share was computed by dividing the net loss attributable to common stockholders by the weighted average number of shares of common stock and potentially dilutive securities outstanding for the period using the “treasury stock,” “if converted” or “two-class” method unless their inclusion would have been anti-dilutive. For purposes of the diluted net loss per share calculation, convertible preferred stock, warrants, convertible notes and common stock options were considered as potentially dilutive securities. Since the Company was in a loss position for the periods from January 1, 2023 to July 21, 2023 (Predecessor) and for the twelve months ended December 31, 2022, basic net loss per share is the same as diluted net loss per share as the inclusion of all potentially dilutive common shares was anti-dilutive. For the periods from July 22, 2023 to December 31, 2023 (Successor), the impact of the options and non-vested RSU’s were anti-dilutive, and as such, there was no difference between the weighted-average number of shares used to calculate basic and diluted earnings per share for the periods presented. Basic and diluted net loss per share for the year ended December 31, 2022 was calculated as follows (in thousands, except share and per share amounts): Year ended December 31, 2022 (Predecessor) Net loss available to common stockholders $ (52,556) Weighted average common shares outstanding, basic and diluted 138,848,177 Net loss per share attributable to common stockholders, basic and diluted $ (0.38) Basic and diluted net loss per share for the periods from January 1, 2023 to July 21, 2023 (Predecessor) and July 22, 2023 to December 31, 2023 (Successor) were calculated as follows (in thousands, except share and per share amounts): Period from January 1, 2023 to July 21, 2023 (Predecessor) Net loss available to common stockholders $ (60,678) Weighted average common shares outstanding, basic and diluted 138,848,177 Net loss per share attributable to common stockholders, basic and diluted $ (0.44) Period from July 22, 2023 to December 31, 2023 (Successor) Net income available to common stockholders $ 24,046 Weighted average common shares outstanding, basic and diluted 37,159,600 Net income per share attributable to common stockholders, basic and diluted $ 0.65 The following potentially dilutive securities outstanding have been excluded from the computation of diluted weighted average shares outstanding because such securities have an anti-dilutive impact: December 31, 2023 2022 Successor Predecessor Warrants 14,479,999 — Contingent consideration 16,000,000 — Contingent founder shares 3,450,000 — Convertible preferred stock outstanding — 21,257,708 Convertible preferred stock warrants outstanding — 342,011 Common stock options and restricted stock units 4,888,537 9,694,890 38,818,536 31,294,609 Contingencies The Company may be, from time to time, a party to various disputes and claims arising from normal business activities. The Company continually assesses litigation to determine if an unfavorable outcome would lead to a probable loss or reasonably possible loss which could be estimated. The Company accrues for all contingencies at the earliest date at which the Company deems it probable that a liability has been incurred and the amount of such liability can be reasonably estimated. If the estimate of a probable loss is a range and no amount within the range is more likely than another, the Company accrues the minimum of the range. In the cases where the Company believes that a reasonably possible loss exists, the Company discloses the facts and circumstances of the litigation, including an estimable range, if possible. Recently Adopted Accounting Standards In June 2016, the FASB issued an accounting standards update (ASU 2016-13) that amended the guidance on the measurement of credit losses on financial instruments. The guidance amended the impairment model by requiring entities to use a forward-looking approach based on expected losses to estimate credit losses on certain financial instruments. In November 2019, the FASB issued an update to the guidance to defer the effective date for all entities except SEC filers that are not smaller reporting companies to fiscal years beginning after December 15, 2022, including interim periods within those years. The Predecessor adopted this standard in the first quarter of 2023. The adoption of this standard did not have an impact on the Company’s consolidated financial statements or related disclosures. In August 2020, the FASB issued an accounting standards update that simplified the accounting for certain financial instruments with characteristics of liabilities and equity by reducing the number of accounting models for convertible debt and convertible preferred stock instruments. It also amended the accounting for certain contracts in an entity’s own equity that are currently accounted for as derivatives because of specific settlement provisions. In addition, the new guidance modified how particular convertible instruments and certain contracts that may be settled in cash or shares impact the diluted EPS computation. The guidance will be effective for the Company for fiscal years beginning after December 15, 2023, including interim periods within those fiscal years, with early adoption permitted for fiscal years beginning after December 15, 2020 but only if the adoption is as of the beginning of a fiscal year. The Predecessor adopted this standard on January 1, 2023. The adoption of this standard did not have an impact on the Company’s consolidated financial statements or related disclosures. Other recent accounting pronouncements issued by the FASB, the American Institute of Certified Public Accountants, and the Securities and Exchange Commission (the “SEC”) did not, or are not believed by management to, have a material impact on the Company’s financial position, results of operations or cash flows.

Forward Merger

Forward Merger	12 Months Ended
Forward Merger	Dec. 31, 2023
Forward Merger
Forward Merger	Note 3. Forward Merger On December 12, 2022, Old AEON and Priveterra entered into a Business Combination Agreement. On July 3, 2023, Priveterra held the special meeting of stockholders, at which the Priveterra stockholders considered and adopted, among other matters, a proposal to approve the transactions contemplated by the Business Combination Agreement, including the Merger. On July 21, 2023, the parties consummated the Merger. In connection with the Closing, Priveterra changed its name from Priveterra Acquisition Corp. to AEON Biopharma, Inc. At the effective time of the Merger (the “Effective Time”), each outstanding share of Old AEON common stock (on an as-converted basis after taking into effect the conversion of the outstanding warrants of Old AEON exercisable for shares of Old AEON preferred stock, the conversion of the shares of Old AEON preferred stock into Old AEON common stock in accordance with the governing documents of Old AEON as of the Effective Time, the conversion of the outstanding convertible notes of Old AEON into Old AEON common stock in accordance with the terms of such convertible notes and after giving effect to the issuance of Old AEON common stock in connection with the merger of ABP Sub, Inc. with and into Old AEON) issued and outstanding immediately prior to the Effective Time converted into the right to receive approximately 2.328 shares of the Company’s common stock and the right to receive a pro-rata portion of the contingent consideration. In addition, each share of Priveterra Class B common stock (“Founder Shares”), par value $0.0001 per share, issued and outstanding immediately prior to the Effective Time converted into one share of common stock totaling 6,900,000 common shares (of which 3,450,000 Founder Shares are subject to certain vesting and forfeiture conditions). In connection with the Merger, on January 6, 2023, Priveterra and Old AEON entered into separate subscription agreements for convertible notes with each of Alphaeon 1 LLC (“A1”) and Daewoong Pharmaceuticals Co., Ltd. (“Daewoong”) (collectively, the “Original Committed Financing Agreements”), pursuant to which A1 and Daewoong agreed to purchase, and Priveterra and Old AEON agreed to sell to each of them, up to $15 million and $5 million, respectively, aggregate of principal of interim convertible notes or equity. Further, on June 8, 2023, Old AEON and Priveterra entered into a committed financing agreement with A1 (the “Additional Committed Financing Agreement”), pursuant to which A1 agreed to purchase, and Priveterra and Old AEON agreed to sell to A1, up to an additional $20 million aggregate principal of interim convertible notes or equity. Pursuant to such agreement, Old AEON issued $14 million of interim convertible notes to A1 in the first and second quarters of 2023. The notes were subsequently measured at fair value under a fair value option election, with changes in fair value reported in earnings of the Predecessor (Old AEON). Conversion of the notes was contingent and automatically convertible on the Merger, and 2,226,182 shares of Priveterra Class A common stock were issued on the Closing Date in settlement of their conversion. The proceeds from the interim convertible notes were used to fund Old AEON’s operations through the consummation of the Merger. Additionally, approximately $25 million was received on the Closing Date in exchange for an aggregate of 3,571,429 shares of Priveterra Class A common stock at $7.00 per share that were issued under the Original Committed Financing Agreements and Additional Committed Financing Agreements, and was reflected “on the line” in the Successor’s opening accumulated deficit. On April 27, 2023, Priveterra and AEON amended the Business Combination Agreement. Concurrently with the amendment to the Business Combination Agreement, Priveterra amended the Sponsor Support Agreement to include restriction and forfeiture provisions related to the Founder Shares. See Note 6 Fair Value Measurements Note 11 Share-Based Compensation Asset Acquisition Method of Accounting The Merger was accounted for using the asset acquisition method in accordance with U.S. GAAP. Under this method of accounting, Priveterra was considered to be the accounting acquirer based on the terms of the Merger. Upon consummation of the Merger, the cash on hand resulted in the equity at risk being considered insufficient for Old AEON to finance its activities without additional subordinated financial support. Therefore, Old AEON was considered a Variable Interest Entity (“VIE”) and the primary beneficiary of Old AEON was treated as the accounting acquirer. Priveterra held a variable interest in Old AEON and owned 100% of Old AEON’s equity. Priveterra was considered the primary beneficiary as it has the decision-making rights that gives it the power to direct the most significant activities. Also, Priveterra retained the obligation to absorb the losses and/or receive the benefits of Old AEON that could have potentially been significant to Old AEON. The Merger was accounted for as an asset acquisition as substantially all of the fair value was concentrated in IPR&D, an intangible asset. Old AEON’s assets (except for cash) and liabilities were measured at fair value as of the transaction date. Consistent with authoritative guidance on the consolidation of a VIE that is not considered a business, differences in the total purchase price and fair value of assets and liabilities are recorded as a gain or loss to the consolidated statement of operations. The loss on the consolidation of the VIE is reflected “on the line” in the Successor’s opening accumulated deficit. Costs incurred in obtaining technology licenses are charged to research and development expense as IPR&D if the technology licensed has not reached technological feasibility and has no alternative future use. The IPR&D recorded at the Closing of $348.0 million is reflected “on the line” in the Successor’s opening accumulated deficit. To estimate the value of the acquired IPR&D, the Company used a Multi-Period Excess Earnings Method under the Income Approach. The determination of the fair value requires management to make significant estimates including, but not limited to, the discount rate used, the total addressable market for each potential drug, market penetration assumptions, and the estimated timing of commercialization of the drugs. Changes in these assumptions could have a significant impact on the fair value of the IPR&D. The significant assumptions used in determining IPR&D was the discount rate of 25%, implied internal rate of return of 24.8% and long-term growth rate of 4%. The following is a summary of the purchase price calculation (in thousands except share and per share data) . Number of shares issued as consideration in the Merger 16,500,000 Shares issued for interim convertible notes related to Committed Financing 2,226,182 Total number of shares of common stock of the combined company 18,726,182 Multiplied by the Priveterra share price, as of the Closing $ 10.84 Total $ 202,992 Fair value of contingent consideration 125,699 Replacement of share-based payment awards 13,331 Assumed liabilities 125 Total purchase price $ 342,147 The allocation of the purchase price was as follows (in thousands). Cash $ 2,001 Net working capital (excluding cash) (16,182) Other assets and liabilities 775 Acquired in-process research and development 348,000 Net assets acquired 334,594 Loss on consolidation of VIE 7,553 Total purchase price $ 342,147 In connection with the Merger, the transactions that occurred concurrently with the closing date of the Merger were reflected “on the line”. “On the line” describes those transactions triggered by the consummation of the Merger that are not recognized in the consolidated financial statements of the Predecessor nor the Successor as they are not directly attributable to either period but instead were contingent on the Merger. The opening cash balance in the Successor’s consolidated statement of cash flow of $31.2 million consists of cash from Priveterra of $29.2 million and Old AEON $2.0 million. The number of shares of common stock issued and amounts recorded on the line within stockholders’ deficit are reflected below to arrive at the opening consolidated balance sheet of the Successor. Common shares Common stock amount Subscription Receivable APIC Accumulated Deficit Priveterra closing equity as of July 21, 2023 557,160 $ — $ — $ 5,937 $ (12,897) Shares issued as Consideration in the Merger Note 1 16,500,000 2 — 192,189 — Merger Consideration - Shares issued for Interim Convertible Notes related to Committed Financing Note 5 2,226,182 — — 24,132 — Stock-Compensation for Class B Founder Shares Note 3 6,900,000 1 — 68,972 (68,972) Forward Purchase Agreements Note 6 6,275,000 1 (60,710) 66,714 (38,255) Issuance of Make-Whole derivative Note 6 — — — — (427) Shares issued in New Money PIPE Subscription Agreements Note 6 1,001,000 — — 10,844 (6,433) Shares issued for Committed Financing Note 6 3,571,429 — — 38,714 (13,714) Contingent Founder Shares Note 6 — — — (31,401) — Acquired IPR&D and Loss on Consolidation of VIE Note 3 — — — — (355,553) Other Miscellaneous 128,829 — — 1,397 (1,397) Total 37,159,600 $ 4 $ (60,710) $ 377,498 $ (497,648) The Sponsor, in connection with Priveterra’s IPO, purchased 6,900,000 shares of Class B common stock (the “Founder Shares”) for $25,000 (approximately $0.004 per share). These shares had no value until Priveterra effected the Merger. Upon the Merger, the Founder Shares automatically converted to shares of common stock. This conversion was solely contingent upon the completion of the Merger, a performance condition, and did not include any future service requirements. As such, the grant date fair value of the 6,900,000 shares was expensed in the amount of $69.0 million and is presented “on the line.” Pursuant to the terms of the Sponsor Support Agreement, as amended, effective at the Closing, 50% of the Founder Shares (i.e., 3,450,000 Founder Shares) (the “Contingent Founder Shares”) were unvested and subject to the restrictions and forfeiture provisions set forth in this Sponsor Support Agreement. As such, the fair value at Closing of the remaining 3,450,000 shares with vesting conditions in the amount of $31.4 million was reclassified from additional paid-in capital to contingent consideration liability on the accompanying Successor’s consolidated balance sheet.

Related Party Transactions (Pre

Related Party Transactions (Predecessor)	12 Months Ended
Related Party Transactions (Predecessor)	Dec. 31, 2023
Related Party Transactions (Predecessor)
Related Party Transactions (Predecessor)	Note 4. Related Party Transactions (Predecessor) 2019 Debt Financings In June 2019, the Predecessor entered into a senior unsecured note purchase agreement (the “Original 2019 Note Purchase Agreement”), with Dental Innovations, pursuant to which the Predecessor issued Dental Innovations a promissory note (the “Original 2019 Note”) with a principal amount of $5.0 million. Pursuant to the terms of the Original 2019 Note, the Predecessor was required to repay a total of $8.75 million, representing all principal and interest owed, upon the earliest to occur of (i) June 19, 2022, (ii) Dental Innovations’ demand for repayment following the Predecessor’s completion of an initial public offering and (iii) the Predecessor’s election to repay the Original 2019 Note in full. Under the Original 2019 Note Purchase Agreement, Dental Innovations committed to purchase from the Predecessor an additional promissory note with a principal amount of $5.0 million, subject to the Predecessor issuing and selling an additional promissory note with a principal amount of $5.0 million to a lender not affiliated with Dental Innovations. Any such additional promissory notes were to have the same payment terms as the Original 2019 Notes. In December 2019, the Predecessor entered into an amendment to the Original 2019 Note Purchase Agreement that provided for the exchange of the Original 2019 Note for a convertible promissory note with a principal amount of $5.0 million. In addition, Dental Innovations was no longer committed to purchase from the Predecessor an additional promissory note with a principal amount of $5.0 million subject to the Predecessor issuing and selling an additional promissory note with a principal amount of $5.0 million to a lender not affiliated with Dental Innovations. In December 2019, the Predecessor issued and sold five additional convertible promissory notes, each with a principal amount of $1.0 million The Predecessor’s payment and performance under the 2019 Convertible Notes were guaranteed by ABP Sub Inc., the Predecessor’s wholly owned subsidiary prior to the Merger. Pursuant to the terms of the 2019 Convertible Notes, the Predecessor was required to repay 175% of the principal amount to the holders on the third anniversary of the issuance of the 2019 Convertible Notes. In the event of an underwritten public offering of the Predecessor’s common stock, the 2019 Convertible Notes would have automatically converted into a number of shares of the Predecessor’s common stock equal to 175% of the principal amount of the 2019 Convertible Notes, divided by the per share price at which shares were offered to the public in such offering. Due to certain embedded features within the 2019 Convertible Notes, the Predecessor elected to account for the 2019 Convertible Notes and all their embedded features at fair value at inception. Subsequent changes in fair value were recorded as a component of other (loss) income in the Predecessor’s consolidated statements of operations and comprehensive (loss) income or as a component of other comprehensive income (loss) for changes to instrument-specific credit risk. As a result of electing the fair value option, direct costs and fees related to the 2019 Convertible Notes were expensed as incurred. In January 2020, in connection with the distribution of the units of A1 to the Predecessor’s stockholders, each of the holders of the Predecessor’s 2019 Convertible Notes were granted contingent warrants by A1 to purchase shares of Evolus, Inc. (“Evolus”) from A1. The contingent warrants were exercisable at the option of the holders only prior to the Predecessor’s first underwritten public offering of common stock under the Securities Act of 1933, as amended (the “Securities Act”), or upon an event of default under the 2019 Convertible Notes. The 2019 Convertible Notes were concurrently amended to provide the noteholders the option, prior to the notes’ conversion, to cancel a portion of the indebtedness represented by such noteholder’s 2019 Convertible Note and receive a number of shares of Evolus from A1 having a market value equal to the value of such cancelled indebtedness, in lieu of automatic conversion of all of the noteholder’s 2019 Convertible Note into shares of the Predecessor’s common stock. The amount of cancelled indebtedness that could be so applied in exercise of the contingent warrant was capped as the ratio that the value of Evolus shares held by A1 bore to the combined value of (i) the Evolus shares held by A1 and (ii) the Predecessor immediately prior to consummation of the Predecessor’s first underwritten public offering of common stock under the Securities Act. In September 2020, in connection with the distribution of the units of Alphaeon Credit Holdco LLC (“AC HoldCo”) and Zelegent HoldCo LLC (“Z HoldCo”) to the Predecessor’s stockholders, each of the holders of the Predecessor’s 2019 Convertible Notes were granted contingent warrants by AC HoldCo and Z HoldCo to purchase shares of Alphaeon Credit, Inc. (“Alphaeon Credit”) and Zelegent from AC HoldCo and Z HoldCo. The contingent warrants were exercisable at the option of the holders only prior to the Predecessor’s first underwritten public offering of common stock under the Securities Act, or upon an event of default under the 2019 Convertible Notes. The 2019 Convertible Notes were concurrently amended to provide the noteholders the option, prior to the notes’ conversion, to cancel a portion of the indebtedness represented by such noteholder’s 2019 Convertible Note and receive a number of shares of Alphaeon Credit and/or Zelegent from AC HoldCo and Z HoldCo having a market value equal to the value of such cancelled indebtedness, in lieu of automatic conversion of all of the applicable noteholder’s 2019 Convertible Note into shares of the Predecessor’s common stock. The amount of cancelled indebtedness that can be so applied in exercise of the contingent warrant was capped as the ratio of aggregate indebtedness held by the convertible note holder as a proportion of the value of Alphaeon Credit or Zelegent to the value of the Predecessor. Additionally, on July 22, 2022, the 2019 debt was amended. The Dental Innovations note’s maturity date was extended from June 19, 2022 to December 29, 2023. The original note had a principal of $5.0 million. Upon the original maturity date, the total due was 175% of principal, which equals $8.7 million (which such amount included an additional amount of $3.7 million). Interest was increased from 0.0% to 15.79% on the total payable of $8.7 million from the original maturity date of June 19, 2022 to the new maturity date of December 29, 2023. On July 22, 2022, the maturity dates for four of the $1.0 million convertible promissory notes were extended from November 1, 2022, December 12, 2022, December 12, 2022 and December 18, 2022, respectively, to December 29, 2023. Each of the four notes million four notes principal which equals million additional amount million million was paid remaining million due remaining million from The 2019 SCH Note’s maturity date was extended from December 18, 2022 to December 29, 2023. The original Note had a principal of $1.0 million. Upon the original maturity date, the total due was 175% of principal, which equals $1.7 million. The interest rate was increased from 0.0% to 15.79% on the total of $1.7 million from the original maturity date to the new maturity date. In April 2023, the contingent warrants were amended to include the merger between AEON and Old AEON as a qualifying listing under the warrant agreement, which stated that the holders of the contingent warrants would exercise the warrants, and that the holders would receive 85% of the shares the holders would have been entitled to receive via the previous warrant agreement. The contingent warrants were exercised into Evolus shares held by A1 and Alphaeon Credit at the same time the convertible notes were converted to shares of the Company’s stock. The Company determined that the contingent warrants amendment modified the settlement provision in the 2019 Convertible Notes. The Company determined that the amendment should be accounted for as a debt extinguishment. Since the noteholders were both shareholders of Old AEON, Evolus and Alphaeon Credit, the debt extinguishment was accounted for as a capital transaction on the April 2023 modification date. As such, due to the warrant modification, the Predecessor recognized a $17.0 million reduction to the underlying fair value of the convertible notes and a corresponding increase of $17.0 million to additional paid in capital during the period from January 1, 2023 to July 21, 2023 (Predecessor), of which $5.2 million was attributable to 2019 Debt Financing contingent warrants. During the periods from January 1, 2023 to July 21, 2023 (Predecessor) and the twelve months ended December 31, 2022, the Predecessor recognized $1.6 million and $1.7 million, respectively, of expense related to the increase in the fair value of the 2019 Convertible Notes. As of December 31, 2022 (Predecessor), the principal amount outstanding under the 2019 Convertible Notes was $6.0 million, with an estimated fair value of $16.2 million. The 2019 Convertible Notes were converted into shares of the Successor’s common stock at the Closing and were recorded “on the line” as part of the shares issued as consideration in the Merger (see Note 3 Forward Merger SCH Convertible Note The Predecessor issued a convertible promissory note to SCH (the “SCH Convertible Note”). Prior to the Merger, the Predecessor’s payment and performance under the SCH Convertible Note were guaranteed by ABP Sub Inc. Pursuant to the terms of the SCH Convertible Note, the Predecessor was required to repay 175% of the principal amount to SCH on the third anniversary of its issuance. In the event of an underwritten public offering of the Predecessor’s common stock, the SCH Convertible Note would have automatically converted into a number of shares of the Predecessor’s common stock equal to 175% of the principal amount of the SCH Convertible Note, divided by the per share price at which shares were offered to the public in such offering. Due to certain embedded features within the SCH Convertible Note, the Predecessor elected to account for the SCH Convertible Note and the embedded features at fair value at inception. Subsequent changes in fair value were recorded as a component of other (loss) income in the Predecessor’s consolidated statements of operations and comprehensive (loss) income or as a component of other comprehensive income (loss) for changes to instrument-specific credit risk. As a result of electing the fair value option, any direct costs and fees related to the SCH Convertible Note were expensed as incurred. Additionally, the 2020 Strathspey Crown note’s maturity date was extended from January 2, 2023 to December 29, 2023. The original note had a principal of $17.5 million. Upon the original maturity date, the total due was $30.6 million. The interest rate was increased from 0.0% to 15.79% on the total of $30.6 million from the original maturity date to the new maturity date. During the periods from January 1, 2023 to July 21, 2023 (Predecessor) and the twelve months ended December 31, 2022, the Predecessor recognized $4.2 million and $2.1 million, respectively, of expense related to the increase in the fair value of the SCH Convertible Note. As of December 31, 2022, the principal amount outstanding under the SCH Convertible Note was $17.5 million, with an estimated fair value of $25.1 million. In April 2023, the contingent warrants were amended to include the merger between AEON and Old AEON as a qualifying listing under the warrant agreement, which stated that the holders of the contingent warrants would exercise the warrants, and that the holders would receive 85% of the shares the holders would have been entitled to receive via the previous warrant agreement. The Company determined that the contingent warrants amendment modified the settlement provision in the 2019 Convertible Notes. The Company determined that the amendment should be accounted for as a debt extinguishment. Since Evolus and Alphaeon Credit are related parties of AEON, the debt extinguishment was accounted for as a capital transaction on the April 2023 modification date. As such, due to the warrant modification, the Predecessor recognized a $17.0 million reduction to the underlying fair value of the convertible notes and a corresponding increase of $17.0 million to additional paid in capital during the period from January 1, 2023 to July 21, 2023 (Predecessor), of which $11.8 million was attributable to SCH contingent warrants. The SCH Convertible Note was converted into shares of the Successor’s common stock at the Closing and was recorded “on the line” as part of the shares issued as consideration in the Merger (see Note 3 Forward Merger A1 Convertible Notes In December 2021, the Predecessor entered into an agreement with A1 (the “A1 Purchase Agreement”), pursuant to which the Predecessor could issue subordinated convertible promissory notes to A1 with an aggregate principal amount of up to $25.0 million. On December 8 and 15, 2021, the Predecessor issued two convertible notes (collectively, the “2021 A1 Convertible Notes”), each with a principal amount of $5.0 million, and The 2021 A1 Convertible Notes bore interest, compounded daily, at the lesser of 10% per annum or the maximum rate permissible by law. Interest was paid in-kind by adding the accrued amount thereof to the principal amount on a monthly basis on the last day of each calendar month for so long as any principal amount was outstanding (such paid in-kind interest, in the aggregate at any time, the “PIK Principal”). Immediately prior to an initial public offering, all of the then outstanding principal amount and accrued and unpaid interest under the 2021 A1 Convertible Notes was to automatically convert into shares of the Predecessor’s common stock. The number of shares of common stock issuable upon conversion of the 2021 A1 Convertible Notes would have been equal to (i) the outstanding loan amount (including the PIK Interest) divided by (ii) the product of (a) the price per share of such common stock issued to the public in the initial public offering multiplied by Due to certain embedded features within the 2021 A1 Convertible Notes, the Predecessor elected to account for the 2021 A1 Convertible Notes and the embedded features at fair value at inception. Subsequent changes in fair value were recorded as a component of other (loss) income in the accompanying Predecessor’s consolidated statements of operations and comprehensive (loss) income or as a component of other comprehensive income (loss) for changes to instrument-specific credit risk. During the periods from January 1, 2023 to July 21, 2023 (Predecessor) and the year ended December 31, 2022, the Predecessor recognized $(3.0) million and $0.6 million, respectively, of (expense) income related to the (increase) decrease in the fair value of the 2021 A1 Convertible Notes. As of December 31, 2022, the principal amount outstanding under the 2021 A1 Convertible Notes was $10 million, with an estimated fair value of $8.7 million. The 2021 A1 Convertible Notes were converted into shares of the Successor’s common stock at the Closing. During the year ended December 31, 2022, the Predecessor issued five additional tranches of subordinated convertible promissory notes to A1 on February 18, 2022, March 9, 2022, April 14, 2022, June 3, 2022 and July 1, 2022 (collectively, the “2022 A1 Convertible Notes”), the first four with a principal amount of $3.0 million each and Convertible Notes. During the periods from January 1, 2023 to July 21, 2023 (Predecessor) and the year ended December 31, 2022, the Predecessor recognized $4.2 million and $1.0 million, respectively, of expense related to the increase in the fair value of the 2022 A1 Convertible Notes. As of December 31, 2022, the principal balance was $14.5 million, with an estimated fair value of $12.2 million. The 2022 A1 Convertible Notes were converted into shares of the Successor’s common stock at the Closing. Additionally, on March 30, 2022, the Predecessor amended the 2021 A1 Convertible Notes and the convertible notes issued on February 18, 2022 and March 9, 2022 to remove the discount rate associated with the automatic conversion of any outstanding convertible notes into shares of common stock in connection with an initial public offering. On March 6, 2023, the Predecessor entered into an agreement with A1, pursuant to which the Predecessor issued subordinated convertible promissory notes to A1 with an aggregate principal amount of $6.0 million (“March 2023 A1 Convertible Notes”) that matured on the earlier of (x) the date of the consummation of the Merger and (y) December 29, 2023. The March 2023 A1 Convertible Notes bore interest at 15.79%, based on simple interest daily, unless issued at least five days prior to maturity date. The March 2023 A1 Convertible Notes had similar terms to the 2021 A1 Convertible Notes and 2022 A1 Convertible Notes and were unsecured and subordinated to the Predecessor’s other convertible notes. During the period from January 1, 2023 to July 21, 2023 (Predecessor), the Predecessor recognized $10.1 million of expense related to the increase in the fair value of the March 2023 A1 Convertible Notes. The March 2023 A1 Convertible Notes were converted into shares of the Successor’s common stock at the Closing and was recorded “on the line” as part of the shares issued as consideration in the Merger (see Note 3 Forward Merger

Daewoong Convertible Notes (Pre

Daewoong Convertible Notes (Predecessor)	12 Months Ended
Daewoong Convertible Notes (Predecessor)	Dec. 31, 2023
Daewoong Convertible Notes (Predecessor)
Daewoong Convertible Notes (Predecessor)	Note 5. Daewoong Convertible Notes (Predecessor) In August 2020, the Predecessor entered into a Convertible Promissory Note Purchase Agreement with Daewoong (the “Daewoong Purchase Agreement”), pursuant to which the Predecessor issued Daewoong two subordinated convertible promissory notes (collectively, the “2020 Daewoong Convertible Notes”) with an aggregate principal amount of $25.0 million. The 2020 Daewoong Convertible Notes had similar terms, of which one was issued on August 27, 2020 with a principal amount of $10.0 million and the other was issued on September 18, 2020 with a principal amount of $15.0 million. The 2020 Daewoong Convertible Notes were unsecured and subordinated to the Predecessor’s 2019 Convertible Notes. The Predecessor’s payment and performance under the 2020 Daewoong Convertible Notes was guaranteed by ABP Sub Inc., the Predecessor’s wholly owned subsidiary prior to the Merger. The 2020 Daewoong Convertible Notes bore interest daily at 3% per annum with semiannual compounding. Interest is paid in-kind by adding the accrued amount thereof to the principal amount on a semi-annual basis on June 30th and December 31st of each calendar year for so long as any principal amount remained outstanding (such paid in-kind interest, in the aggregate at any time, the “PIK Principal”). The 2020 Daewoong Convertible Notes had a maturity date of September 18, 2025. Pursuant to the 2020 Daewoong Convertible Notes’ terms, Daewoong could have elected to convert all of the then outstanding principal amount and all accrued and unpaid interest into the Predecessor’s common stock at any time following the date that was 12 months after September 18, 2020, provided, that such election must have been made at the same time with respect to all notes issued to Daewoong. The number of shares issuable upon any conversion would have been equal to (i) the outstanding principal amount (excluding PIK Principal) divided by $25.0 million and (ii) multiplied by 9.99% of the aggregate of all of the shares of the Predecessor’s common stock then outstanding, the Predecessor’s common stock issuable upon conversion or exercise of all of the outstanding convertible or exercisable securities, all outstanding vested or unvested options or warrants to purchase the Predecessor’s capital stock, but excluding all out-of-the-money options, and all shares of common stock issuable upon conversion of any convertible debt (whether or not such debt would have been convertible at such time). Immediately prior to an initial public offering (“IPO”), all of the then outstanding principal amount and accrued and unpaid interest under the 2020 Daewoong Convertible Notes would have automatically converted into shares of the Predecessor’s common stock. The number of shares of common stock issuable upon conversion of the 2020 Daewoong Convertible Notes was equal to (i) the outstanding principal amount (excluding PIK Principal) divided by $25.0 million and (ii) multiplied by the greater of (A) 9.99% of the pre-IPO shares of the Predecessor, and (B) that number of shares having an aggregate value of $20.0 million immediately prior to the IPO based upon a price per share of such common stock issued to the public in the IPO; provided, however, that in no event was Daewoong’s ownership to exceed 15% of the pre-IPO shares of the Predecessor after taking into account conversion of the 2020 Daewoong Convertible Notes. In the event, and only in the event, that shares of the Predecessor were sold in the IPO whereby the pre-money valuation of the Predecessor was $200.0 million or greater, within five either in cash or by the issuance of additional shares of common stock at the price per share in the IPO, which payment method would have been be at the Predecessor’s sole election. In May 2021, the Daewoong Purchase Agreement was amended to provide for the issuance of an additional subordinated convertible promissory note by the Predecessor to Daewoong at an initial principal amount of $5.0 million. The subordinated convertible promissory note was issued with terms similar to the two subordinated convertible promissory notes issued in 2020 and had a maturity date of May 12, 2026 (all such convertible promissory notes, the “Daewoong Convertible Notes”). Pursuant to the terms of the amended Daewoong Purchase Agreement, Daewoong could have elected to convert all of the then outstanding principal amount and all accrued and unpaid interest into the Predecessor’s common stock at any time following the date that was 12 months after September 18, 2020, provided, that such election must have been made at the same time with respect to all notes issued to Daewoong. The number of shares of common stock issuable upon conversion would have been equal to (i) the outstanding principal amount (excluding PIK Principal) divided by $30.0 million and (ii) multiplied by 11.99% of the aggregate of all of the shares of the Predecessor’s common stock then outstanding, the Predecessor’s common stock issuable upon conversion or exercise of all of the outstanding convertible or exercisable securities, all outstanding vested or unvested options or warrants to purchase the Predecessor’s capital stock, but excluding all out-of-the-money options, and all shares of common stock issuable upon conversion of any convertible debt (whether or not such debt would have been convertible at such time). In addition, immediately prior to an initial public offering, all of the then outstanding principal amount and accrued and unpaid interest under the convertible notes would have automatically converted into shares of the Predecessor’s common stock. The number of shares of common stock issuable upon conversion of the convertible notes was equal to (i) the outstanding principal amount (excluding PIK Principal) divided by $30.0 million and (ii) multiplied by the greater of (A) 11.99% of the pre-IPO shares of the Predecessor, and (B) that number of shares having an aggregate value of $24.0 million immediately prior to the IPO based upon a price per share of such common stock issued to the public in the IPO; provided, however, that in no event was Daewoong’s ownership to exceed 18% of the pre-IPO shares of the Predecessor after taking into account conversion of the Daewoong Convertible Notes. Due to certain embedded features within the Daewoong Convertible Notes, the Predecessor elected to account for the Daewoong Convertible Notes, including the paid-in-kind principal and interest, and the embedded features at fair value at inception. Subsequent changes in fair value were recorded as a component of other (loss) income in the Predecessor’s consolidated statements of operations and comprehensive (loss) income or as a component of other comprehensive income (loss) for changes to instrument-specific credit risk. As a result of electing the fair value option, any direct costs and fees related to the Daewoong Convertible Notes were expensed as incurred. On July 29, 2022, the Predecessor entered into a Convertible Promissory Note Purchase Agreement (the “Agreement”) between the Predecessor and Daewoong Co., LTD. and received $30 million. The related note had a stated interest rate of 15.79% per annum. Such note was scheduled to mature on December 29, 2023 and had similar conversion terms to the Daewoong Convertible Notes. Such note could have been prepaid, in whole, without premium or penalty at any time prior to the maturity date. During the periods from January 1, 2023 to July 21, 2023 (Predecessor) and the year ended December 31, 2022, the Predecessor recognized $3.7 million and $(2.2) million, respectively, of income (expense) related to the decrease (increase) in the fair value of the Daewoong Convertible Notes. As of December 31, 2022, the principal amount outstanding (excluding the PIK Principal) under the Daewoong Convertible Notes was $60 million, with an estimated fair value of $53.5 million. The Daewoong Convertible Notes were converted into shares of the Successor’s common stock at the Closing.

Fair Value Measurements

Fair Value Measurements	12 Months Ended
Fair Value Measurements	Dec. 31, 2023
Fair Value Measurements
Fair Value Measurements	Note 6. Fair Value Measurements The Company measures fair value based on the prices that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The carrying value of cash, accounts payable, accrued liabilities and convertible notes approximate fair value because of the short-term nature of those instruments. There were no convertible notes outstanding at December 31, 2023. The following are other financial assets and liabilities that are measured at fair value on a recurring basis. Convertible Notes at Fair Value (Predecessor) Due to certain embedded features within the convertible notes, the Predecessor elected the fair value option to account for its convertible notes, including any paid-in-kind principal and interest, and the embedded features. During the periods from January 1, 2023 to July 21, 2023 (Predecessor) and the year ended December 31, 2022, the Predecessor recognized $19.4 million and $4.4 million, respectively, of expense related to the increase in the fair value of the convertible notes. As of December 31, 2022, the principal amount outstanding under the convertible notes was $111 million, with an estimated fair value of $131.3 million. The convertible notes were converted into shares of the Successor’s common stock at the Closing. See Note 4 Related Party Transactions (Predecessor) Note 5 Daewoong Convertible Notes (Predecessor) The fair value of the convertible notes was determined based on Level 3 inputs using a scenario-based analysis that estimated the fair value of the convertible notes based on the probability-weighted present value of expected future investment returns, considering each of the possible outcomes available to the noteholders, including various initial public offering, settlement, equity financing, corporate transaction and dissolution scenarios. The significant unobservable input assumptions that can significantly change the fair value included (i) the weighted average cost of capital, (ii) the timing of payments, (iii) the discount for lack of marketability, (iv) the probability of certain corporate scenarios, and (v) the long-term pretax operating margin. During the period from January 1, 2023 to July 21, 2023 (Predecessor), the Predecessor utilized discount Preferred Stock Warrant Liability (Predecessor) In 2016, in connection with an earlier debt issuance that has been subsequently settled, the Predecessor issued to one of its investors, Longitude Venture Partners II, L.P. (“Longitude”), warrants to purchase 342,011 shares of the Predecessor’s Series B convertible preferred stock at an exercise price of $7.3097 per share. The Predecessor accounted for the warrants as a liability, which were initially recorded at their fair value of $0.8 million on the date of issuance and are subject to remeasurement at each subsequent balance sheet date. Any change in fair value of the warrants as a result of the remeasurement was recognized as a component of other (loss) income, net in the accompanying Predecessor’s consolidated statements of operations and comprehensive (loss) income. The fair value of the warrant liability is determined based on Level 3 inputs using the Black-Scholes option-pricing model, which includes expected volatility, risk-free interest rate, expected life and expected dividend yield. The warrant liability was not material as of December 31, 2022 (Predecessor) and there were no material changes in fair value for the periods from January 1, 2023 to July 21, 2023 (Predecessor) and the year ended December 31, 2022 (Predecessor). The preferred stock warrants expired prior to the Closing. Forward Purchase Agreements (Successor) On June 29, 2023, Priveterra and Old AEON entered into the Forward Purchase Agreements with each of (i) ACM ARRT J LLC (“ACM”) and (ii) Polar Multi-Strategy Fund (“Polar”) (each of ACM and Polar, individually, a “Seller”, and together, the “Sellers”) for OTC Equity Prepaid Forward Transactions. For purposes of each Forward Purchase Agreement, Priveterra is referred to as the “Company” prior to the consummation of the Merger, while AEON is referred to as the “Company” after the consummation of the Merger. As described below in Note 12 Subsequent Events Pursuant to the terms of the Forward Purchase Agreements, the Sellers intended, but were not obligated, to purchase up to 7,500,000 shares of Priveterra Class A Common Stock in the aggregate concurrently with the Closing pursuant to each Seller’s respective FPA Funding Amount PIPE Subscription Agreement. No Seller would be required to purchase an amount of shares of Priveterra Class A Common Stock that would result in that Seller owning more than 9.9% of the total shares of Priveterra Class A Common Stock outstanding immediately after giving effect to such purchase, unless such Seller, at its sole discretion, waived such 9.9% ownership limitation. The Number of Shares subject to a Forward Purchase Agreement was subject to reduction following a termination of the Forward Purchase Agreements with respect to such shares as described under “Optional Early Termination” (“OET”) in the respective Forward Purchase Agreements. Each Forward Purchase Agreement provided that a Seller would be paid directly the Prepayment Amount which was equal to an aggregate of $66.7 million based on the product of (i) 6,275,000 shares of Priveterra Class A common stock (the “Additional Shares”) and (ii) the redemption price per share of $10.63. On July 21, 2023, the Company was obligated to pay each Seller separately the Prepayment Amount required under its respective Forward Purchase Agreement, except that since the Prepayment Amount payable to a Seller was to be paid from the purchase of the Additional Shares by such Seller pursuant to the terms of its respective FPA Funding Amount PIPE Subscription Agreement, such amount was netted against such proceeds, with such Seller being able to reduce the purchase price for the Additional Shares by the Prepayment Amount. For the avoidance of doubt, any Additional Shares purchased by a Seller were to be included in the Number of Shares for its respective Forward Purchase Agreement for all purposes, including for determining the Prepayment Amount. Therefore, the aggregate Prepayment Amount of $66.7 million was netted against the proceeds paid from the purchase of the Additional Shares in the aggregate by the Sellers pursuant to the FPA Funding Amount PIPE Subscription Agreements. We did not have access to the Prepayment Amount immediately following the Closing and, pursuant to the termination of the Forward Purchase Agreements as described below in Note 12 Subsequent Events Note 3 Forward Merger ). Prior to the termination of the Forward Purchase Agreements as described below in Note 12 Subsequent Events per shares. The maximum number of shares would have been reset to equal The Company did not have access to the Prepayment Amount immediately following the Closing and, depending on the manner From time to time and on any date following the Merger (any such date, an “OET Date”), any Seller had the option, in its absolute discretion, to terminate its Forward Purchase Agreement in whole or in part by providing written notice to the Company (the “OET Notice”), no later than the next Payment Date following the OET Date (which would have specified the quantity by which the Number of Shares was to be reduced (such quantity, the “Terminated Shares”)). The effect of an OET Notice would have been to reduce the Number of Shares by the number of Terminated Shares specified in such OET Notice with effect as of the related OET Date. As of each OET Date, the Company would have been entitled to an amount from the Seller, and the Seller would have been obligated to pay to the Company an amount, equal to the product of (x) the number of Terminated Shares and (y) the Reset Price in respect of such OET Date. Pursuant to the terms of the Forward Purchase Agreements, the “Valuation Date” would have been the earlier to occur of (a) the date that is two years after the Closing Date pursuant to the Business Combination Agreement; (b) the date specified by Seller in a written notice to be delivered to AEON at such Seller’s discretion (which Valuation Date would not be earlier than the day such notice is effective) after the occurrence of any of (w) a VWAP Trigger Event, (x) a Delisting Event, or (y) a Registration Failure (defined terms in each of clauses (b)(w) through (b)(y), as described in further detail below) and (c) 90 days after delivery by AEON of a written notice in the event that for any 20 trading days during a 30 consecutive trading day-period that occurred at least 6 months after the Closing Date, the VWAP Price was less than the current Reset Price Floor of $7.00 per share; provided, however, that the Reset Price would have been reduced immediately to any lower price at which the Company would have sold, issued or granted any shares or securities convertible or exchangeable into shares (other than, among other things, grants or issuances under the Company’s equity compensation plans, any securities issued in connection with the Merger or any securities issued in connection with the FPA Funding Amount PIPE Subscription Agreements), subject to certain exceptions, in which case the Reset Price Floor would be eliminated. On the Cash Settlement Payment Date, which would have been the tenth local business day following the last day of the valuation period commencing on the Valuation Date, a Seller was obligated to pay the Company a cash amount equal to (1) (A) a maximum of up to 7,500,000 shares of common stock (the “Number of Shares”) as of the Valuation Date less the number of Unregistered Shares, multiplied by (B) the volume-weighted daily VWAP Price over the Valuation Period less (2) if the Settlement Amount Adjustment was less than the cash amount to be paid, the Settlement Amount Adjustment. The Settlement Amount Adjustment was equal to (1) the Number of Shares as of the Valuation Date multiplied by (2) $2.00 per share, and the Settlement Amount Adjustment will be automatically netted from the Settlement Amount. Based on the applicable guidance in ASC 480, ASC 815, ASC 505 and SAB 4E, the Company has determined that each of its Forward Purchase Agreements entered in connection with the Merger was a freestanding hybrid financial instrument comprising a subscription receivable and embedded features, which have been bifurcated and accounted for separately as derivative instruments. The Company recorded the derivatives as liabilities and measured them at fair value with the initial value of the derivative of Note 3 Forward Merger ). Subsequent changes in the bifurcated derivatives are recorded in the Successor’s consolidated statements of operations and comprehensive (loss) income. derivatives December 31, July 21, 2023 2023 Stock Price $ 7.20 $ 10.84 Expected volatility 52.00% 55.00% Risk-free interest rate 4.48% 4.82% Expected life (in years) 1.56 2 Expected dividend yield — — New Money PIPE Subscription Agreements and Letter Agreements On June 29, 2023, Priveterra entered into separate subscription agreements (the “New Money PIPE Subscription Agreements”) with each of ACM ASOF VIII Secondary-C LP (“ACM Investor”), the Polar Affiliate and certain other investors (collectively, the “New Money PIPE Investors”). Pursuant to the New Money PIPE Subscription Agreements, the New Money PIPE Investors subscribed for and purchased, and Priveterra issued and sold to the New Money PIPE Investors, on the Closing Date, an aggregate of 1,001,000 shares of Priveterra Class A Common Stock for a purchase price of $7.00 per share, for aggregate gross proceeds of $7.0 million (the “New Money PIPE Investment”). Certain affiliates of ACM Investor purchased 236,236 shares from third parties through a broker in the open market prior to the Closing, for which all redemption rights were irrevocably waived. Such redeemed shares were freely tradeable shares prior to the Closing, and the proceeds to the Company provided by such redeemed shares were netted against the $3.5 million that ACM Investor was otherwise obligated to pay the Company under its New Money PIPE Subscription Agreement. Accordingly, Priveterra received $3.5 million from Polar and $0.9 million from ACM Investor (net of redeemed shares and fees) in connection with the New Money PIPE Subscription Agreements for the issuance of 1,001,000 shares. The Company recorded a loss of $6.4 million on the line in the Successor’s opening accumulated deficit related to issuance of common shares underlying the New Money PIPE Subscription Agreement equal to the market price of the stock on the Closing Date less the purchase price of $7.00 per share. On June 29, 2023, the Sponsor entered into separate letter agreements (each, “Letter Agreement” and collectively, the “Letter Agreements”) with each of ACM Investor and Polar. Pursuant to the Letter Agreements, in the event that the average price per share at which shares of common stock purchased pursuant to the New Money PIPE Subscription Agreements that are transferred during the period ending on the earliest of (A) June 21, 2025, (B) the date on which the applicable Forward Purchase Agreement terminates and (C) the date on which all such shares are sold (such price, the “Transfer VWAP”, and such period, the “Measurement Period”) is less than $7.00 per share, then (i) ACM Investor and Polar shall be entitled to receive from Sponsor a number of additional shares of common stock that have been registered for resale by us under an effective resale registration statement pursuant to the Securities Act, under which ACM Investor and Polar may sell or transfer such shares of common stock in an amount that is equal to the lesser of (A) a number of shares of common stock equal to the Make-Whole Amount divided by the VWAP (measured as of the date the additional shares are transferred to ACM Investor or Polar, as applicable) and (B) an aggregate of 400,000 shares of common stock (the “Additional Founder Shares”) and (ii) Sponsor shall promptly (but in any event within fifteen five Based on the terms of the Letter Agreements, and applicable guidance in ASC 815 and SAB 5.T, “Accounting for Expenses or Liabilities Paid by Principal Stockholder(s)”, the Company has determined that the make-whole provision in the Letter Agreements is a freestanding financial instrument and a derivative instrument. The Company has recorded the derivative liability and measured it at fair value with the initial value of the derivative of $0.4 million recorded as a loss “on the line” in the Successor’s opening accumulated deficit (see Note 3 Forward Merger Committed Financing In connection with the Merger, on January 6, 2023, Priveterra and Old AEON entered into separate subscription agreements for convertible notes with each of Alphaeon 1 LLC (“A1”) and Daewoong Pharmaceuticals Co., Ltd. (“Daewoong”) (collectively, the “Original Committed Financing Agreements”), pursuant to which A1 and Daewoong agreed to purchase, and Priveterra and Old AEON agreed to sell to each of them, up to $15 million and $5 million, respectively, aggregate of principal of interim convertible notes. Further, on June 8, 2023, Old AEON and Priveterra entered into a committed financing agreement with A1 (the “Additional Committed Financing Agreement”), pursuant to which A1 agreed to purchase, and Priveterra and Old AEON agreed to sell to A1, up to an additional $20 million aggregate principal of interim convertible notes. Pursuant to such agreement, the Company issued $14 million of interim convertible notes to A1 in the first and second quarters of 2023. The notes were subsequently measured at fair value under a fair value option election, with changes in fair value reported in earnings of the Predecessor (Old AEON). Conversion of the notes was contingent and automatically convertible on the Merger, and 2,226,182 shares of Priveterra Class A common stock were issued on the Closing Date in settlement of their conversion. The proceeds from the interim convertible notes were used to fund Old AEON’s operations through the consummation of the Merger. Additionally, approximately $25 million was received on the Closing Date in exchange for an aggregate of 3,571,429 shares of Priveterra Class A common stock at $7.00 per share that were issued under a committed financing agreement between Priveterra, Old AEON, and each of two investors, A1 and Daewoong. The Company recorded a loss of $13.7 million on the line in the Successor’s opening accumulated deficit related to issuance of common shares underlying the Committed Financing Agreements equal to the market price of the stock on the Closing Date less the purchase price of $7.00 per share. Contingent Consideration and Contingent Founder Shares (Successor) As part of the Merger, certain Founder Shares and Participating Stockholders shares (together, “Contingent Consideration Shares”), as further discussed below, contain certain contingent provisions. On April 27, 2023, Priveterra and Old AEON amended the Business Combination Agreement. Concurrently with the amendment to the Business Combination Agreement, Priveterra amended the Sponsor Support Agreement to include restriction and forfeiture provisions related to the Founder Shares. In addition following the Closing, certain AEON stockholders will be issued up to 16,000,000 additional shares of common stock. Pursuant to the terms of the Sponsor Support Agreement, as amended, effective immediately after the Closing, 50% of the Founder Shares (i.e., 3,450,000 Founder Shares) (the “Contingent Founder Shares”) were unvested and subject to the restrictions and forfeiture provisions set forth in this Sponsor Support Agreement. The remaining 50% of the Founder Shares and 100% of the Private Placement Warrants are not subject to such restrictions and forfeiture provisions. The Contingent Founder Shares shall vest, and shall become free of the provisions as follows: ● 1,000,000 of the Contingent Founder Shares (the “Migraine Phase 3 Contingent Founder Shares”) shall vest upon the achievement of the conditions for the issuance of the Migraine Phase 3 Contingent Consideration Shares on or prior to the Migraine Phase 3 Outside Date; ● 1,000,000 of the Contingent Founder Shares (the “CD BLA Contingent Founder Shares”) shall vest upon the achievement of the conditions for the issuance of the CD BLA Contingent Consideration Shares on or prior to the CD BLA Outside Date; and ● 1,450,000 of the Contingent Founder Shares (the “Episodic/Chronic Migraine Contingent Founder Shares”) shall vest upon the earlier of (x) the achievement of the conditions for the issuance of the Episodic Migraine Contingent Consideration Shares on or before the Episodic Migraine Outside Date and (y) the achievement of the conditions for the issuance of the Chronic Migraine Contingent Consideration Shares on or before the Chronic Migraine Outside Date. The Sponsor has agreed not to vote the Contingent Founder Shares during any period of time that such Contingent Founder Shares are subject to vesting. Following the Closing, in addition to the consideration received at the Closing and as part of the overall consideration paid in connection with the Merger, certain holders of common stock in Old AEON (the “Participating AEON Stockholders”) will be issued a portion of up to 16,000,000 additional shares of common stock, as follows: ● 1,000,000 shares of common stock, in the aggregate, if, on or before June 30, 2025 (as it may be extended, the “Migraine Phase 3 Outside Date”), the Company shall have commenced a Phase 3 clinical study for the treatment of chronic migraine or episodic migraine, which Phase 3 clinical study will have been deemed to commence upon the first subject having received a dose of any product candidate that is being researched, tested, developed or manufactured by or on behalf of the Company or any of its subsidiaries (any such product candidate, a “Company Product”) in connection with such Phase 3 clinical study (such 1,000,000 shares of common stock, the “Migraine Phase 3 Contingent Consideration Shares”); and ● 4,000,000 shares of common stock, in the aggregate, if, on or before November 30, 2026 (as it may be extended, the “CD BLA Outside Date”), the Company shall have received from the FDA acceptance for review of the BLA submitted by the Company for the treatment of cervical dystonia (such 4,000,000 shares of common stock, the “CD BLA Contingent Consideration Shares”); ● 4,000,000 shares of common stock, in the aggregate, if, on or before June 30, 2029 (as it may be extended, the “Episodic Migraine Outside Date”), the Company shall have received from the FDA acceptance for review of the BLA submitted by the Company for the treatment of episodic migraine (such 4,000,000 shares of common stock, the “Episodic Migraine Contingent Consideration Shares”); provided that in the event the satisfaction of the conditions for the issuance of the Episodic Migraine Contingent Consideration Shares occurs prior to the satisfaction of the conditions for the issuance of the Chronic Migraine Contingent Consideration Shares, then the number of Episodic Migraine Contingent Consideration Shares shall be increased to 11,000,000 shares of common stock; and ● 7,000,000 shares of common stock, in the aggregate, if, on or before June 30, 2028 (as it may be extended, the “Chronic Migraine Outside Date”, and together with the Migraine Phase 3 Outside Date, the CD BLA Outside Date and the Episodic Migraine Outside Date, the “Outside Dates”), the Company shall have received from the FDA acceptance for review of the BLA submitted by AEON for the treatment of chronic migraine (such ● In the event that the Company licenses any of its products (except in connection with migraine or cervical dystonia indications) to a third-party licensor for distribution in the U.S. market (a “Qualifying License”) prior to the satisfaction of (x) the conditions for the issuance of the Episodic Migraine Contingent Consideration Shares and (y) the conditions for the issuance of the Chronic Migraine Contingent Consideration Shares, then upon the entry of AEON into such Qualifying License, 2,000,000 shares of common stock shall become due and payable to Participating Stockholders and the number of Episodic Migraine Contingent Consideration Shares and (A) the number of Episodic Migraine Contingent Consideration Shares shall be reduced by 1,000,000 or by 2,000,000 and (B) the number of Chronic Migraine Contingent Consideration Shares shall be reduced by 1,000,000, but not below zero. The Company accounts for the Contingent Consideration Shares as either equity-classified or liability-classified instruments based on an assessment of the Contingent Consideration Shares specific terms and applicable authoritative guidance in ASC 480, Distinguishing Liabilities from Equity (“ASC 480”) and ASC 815, Derivatives and Hedging (“ASC 815”). Based on the appropriate guidance, the Company determined that the Contingent Consideration Shares would be classified as a liability on the Successor’s consolidated balance sheets and remeasured at each reporting period with changes to fair value recorded to the Successor’s consolidated statements of operations and comprehensive (loss) income, while the founder shares not subject to restrictions and forfeiture provisions were recorded to equity. As of December 31, 2023 (Successor), the contingent consideration liability was $104.4 million. The Company utilized the Probability-Weighted Expected Return Method (PWERM) model to value the contingent consideration based on earnout milestones, probability of forfeiture and success scenarios. For the successor period July 22, 2023 to December 31, 2023, the Company recognized $52.8 million in income related to the change in fair value of contingent consideration on the Successor’s consolidated statements of operations and comprehensive (loss) income. Warrants (Successor) Upon the Closing, 14,479,999 warrants initially issued by Priveterra in February 2021, consisting of 9,200,000 public warrants sold in the IPO and 5,279,999 warrants issued in a concurrent private placement, were outstanding. The terms of the warrants are governed by a Warrant Agreement dated February 8, 2021 between the Company (then known as Priveterra Acquisition Corp.) and Continental Stock Transfer & Trust Company (the “Warrant Agreement”). The warrants are accounted for as a liability at the Closing with changes in the fair value through December 31, 2023 recorded to the Successor’s consolidated statement of operations. The Company utilized the publicly reported market price of the public warrants to value the warrant liability at $1.4 million as of December 31, 2023 (Successor). For the Successor period from July 22, 2023 to December 31, 2023, the income from the change in fair value of warrants was $2.3 million. Public warrants Each whole public warrant entitles the holder to purchase one share of the Company’s common stock at a price of $11.50 per share. The public warrants became exercisable 30 days after the completion of the Merger, and The Company may call the public warrants for redemption for cash: ● in whole and not in part; ● at a price of $0.01 per warrant; ● upon not less than 30 days ’ prior written notice of redemption to each warrant holder (the “ 30-day redemption period ” ); ● if, and only if, there is an effective registration statement under the Securities Act of 1933 covering the issuance of the shares of common stock issuable upon exercise of the warrants, and a current prospectus relating thereto, available through the 30-day redemption period; and ● if, and only if, the closing price of the Company's common stock equals or exceeds $18.00 per share (as adjusted for stock splits, stock capitalizations, reorganizations, recapitalizations and the like) for any 20 trading days within a 30 -trading day period ending three business days before the Company sends to the notice of redemption to the warrant holders. The Company may also call the public warrants for redemption: ● in whole and not in part; ● at $0.10 per warrant upon a minimum of 30 days ’ prior written notice of redemption provided that holders will be able to exercise their warrants on a cashless basis prior to redemption and receive that number of shares to be determined by reference to a table in the Warrant Agreement, based on the redemption date and the “ fair market value ” (as defined in the Warrant Agreement ) of common stock except as otherwise described below; and ● if, and only if, the closing price of the Company’s common stock equals or exceeds $10.00 per share (as adjusted for stock splits, stock capitalizations, reorganizations, recapitalizations and the like) for any 20 trading days within a 30 -trading day period ending three business days before the Company sends to the notice of redemption to the warrant holders. Private placement warrants Each private placement warrant was identical to the public warrants initially sold by Priveterra in the IPO, except that the private placement warrants, so long as they are held by the Sponsor or its permitted transferees, (i) will not be redeemable by the Company and (ii) may be exercised by the holders on a cashless basis. Medytox Top-off Right The Predecessor entered into a settlement agreement with Medytox, Inc. (“Medytox”) (the “Settlement Agreement”), effective as of June 21, 2021, as amended on May 5, 2022. Pursuant to the Settlement Agreement, among other things, the Predecessor agreed to enter into a share issuance agreement with Medytox pursuant to which the Predecessor issued 26,680,511 shares of Old AEON common stock, par value $0.0001 per share, to Medytox. The Settlement Agreement stated that in the event the shares of Old AEON common stock the Predecessor issued to Medytox represent less than 10% of the Predecessor’s total outstanding shares immediately prior to the consummation of the Merger (the “Target Ownership”), the Company will issue additional shares of Old AEON common stock to Medytox sufficient to cause Medytox to achieve the Target Ownership (the “Top-off Right”). Because the shares of Old AEON common stock due to be issued to Medytox represented less than 10% of the Predecessor’s total outstanding shares immediately prior to consummation of the Merger, the Predecessor issued additional shares of Old AEON common stock (the “Top-off Shares”) to Medytox sufficient to cause Medytox to achieve the Target Ownership immediately prior to the Merger to the Top-off Right. Based on the terms of the Settlement Agreement, the Top-off Right is a freestanding financial instrument, and is accounted for as a derivative liability pursuant to ASC 815. Accordingly, the Company recognized a loss of $11.8 million in the Predecessor Note 3 Forward Merger Summary of Recurring Fair Value Measurements The following details the Company’s recurring measurements for assets and liabilities at fair value (in thousands): Convertible Notes Warrant Liabilities Contingent Consideration Embedded Forward Purchase Agreement and Make Whole Derivative (Level 3) (Level 1) (Level 3) (Level 3) Predecessor Balance, December 31, 2022 $ 131,292 $ - $ - $ - Issuance of convertible notes 14,000 - - - Change in fair value 19,359 - - - Conversion to common shares (164,651) - - - Balance, July 21, 2023 - - - - Successor Balance, July 22, 2023 - 3,765 157,100 32,677 Additions - - - - Change in fair value - (2,318) (52,750) 8,366 Balance, December 31, 2023 $ - $ 1,447 $ 104,350 $ 41,043

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
Commitments and Contingencies	Dec. 31, 2023
Commitments and Contingencies.
Commitments and Contingencies	Note 7. Commitments and Contingencies Operating Leases In December 2021, the Predecessor entered into a three-year non-cancellable lease for office space. The lease does not include variable or contingent lease payments. An operating lease asset and liability are recognized based on the present value of the remaining lease payments discounted using the Predecessor’s incremental borrowing rate. Lease expense is recognized on a straight-line basis over the lease term. The following table summarizes supplemental balance sheet information related to the operating lease as of December 31, 2023 (in thousands): Minimum lease payments by fiscal year 2024 $ 292 Total future minimum lease payments 292 Less: Imputed interest (14) Present value of lease payments 278 Less: Current portion (included in other accrued expenses) (278) Noncurrent operating lease liability $ — Operating lease right-of-use asset $ 262 Remaining lease term in years 0.9 Discount rate 10 % The following table summarizes supplemental disclosures of operating cost and cash flow information related to operating leases for the periods from January 1, 2023 to July 21, 2023 (Predecessor) and July 22, 2023 to December 31, 2023 (Successor), and the year ended December 31, 2022 (Predecessor) (in thousands). Year Ended December 31, 2023 2022 Predecessor January 1, 2023 to July 21, 2023 Successor July 22, 2023 to December 31, 2023 Predecessor Cost of operating leases $ 153 $ 122 $ 279 Cash paid for operating leases 180 129 248 Daewoong License and Supply Agreement On December 20, 2019, the Predecessor entered the Daewoong Agreement, pursuant to which Daewoong agreed to manufacture and supply ABP-450 and grant the Company an exclusive license for therapeutic indications to import, distribute, promote, market, develop, offer for sale and otherwise commercialize and exploit ABP-450 in the United States, the European Union, the United Kingdom, Canada, Australia, Russia, the Commonwealth of Independent States and South Africa (collectively the “covered territories”). Daewoong supplies the Company with ABP-450 at an agreed-upon transfer price, with no milestone or royalty payments and no minimum purchase requirements. Daewoong is responsible for all costs related to the manufacturing of ABP-450, including costs related to the operation and upkeep of its manufacturing facility, and the Company is responsible for all costs related to obtaining regulatory approval, including clinical expenses, and commercialization of ABP-450. The Company’s exclusivity is subject to its exercise of commercially reasonable efforts to: (i) achieve all regulatory approvals necessary for ABP-450 to be marketed in the territory for therapeutic indications and (ii) commercialize ABP-450 in the territory for therapeutic indications. During the term of the Daewoong Agreement, the Company cannot purchase, sell or distribute any competing products in a covered territory or sell ABP-450 outside a covered territory. The initial term of the Daewoong Agreement is from December 20, 2019 to the later of (i) the fifth anniversary of approval from the relevant governmental authority necessary to market and sell ABP-450 or (ii) December 20, 2029, and automatically renews for unlimited additional three-year terms, provided the Daewoong Agreement is not earlier terminated. The Daewoong Agreement will terminate upon written notice by either the Company or Daewoong upon a continuing default that remains uncured within 90 days (or 30 days for a payment default) by the other party, or without notice upon the bankruptcy or insolvency of the Company. The Company has accrued $0.2 million and a de minimus amount for ABP-450 supplies as of December 31, 2022 (Predecessor) and December 31, 2023 (Successor), respectively. Legal Proceedings The Company, from time to time, is involved in various litigation matters or regulatory encounters arising in the ordinary course of business that could result in unasserted or asserted claims or litigation. Other than as described below, the Company is not subject to any currently pending legal matters or claims that would have a material adverse effect on its accompanying financial position, results of operations or cash flows. On September 18, 2023, Odeon Capital Group LLC (“Odeon”) filed a lawsuit against the Company in the Supreme Court of the State of New York, alleging that the Company failed to pay Odeon’s deferred underwriting fee of $1.25 million. Odeon claims that it served as the underwriter for Priveterra Acquisition Corp., the special purpose acquisition company with which Old AEON merged with and into in July 2023. Odeon seeks monetary damages for the full amount of its claimed underwriting fee, punitive damages, attorneys’ fees and other amounts. On November 16, 2023, the Company filed a motion to dismiss certain claims included in Odeon’s complaint. In the normal course of business, the Company enters into contracts and agreements that contain a variety of representations and warranties and provide for general indemnifications. The Company’s exposure under these agreements is unknown because it involves claims that may be made against the Company in the future, but have not yet been made. The Company accrues a liability for such matters when it is probable that future expenditures will be made and such expenditures can be reasonably estimated. See Note 2 Summary of Significant Accounting Policies

Income Taxes

Income Taxes	12 Months Ended
Income Taxes	Dec. 31, 2023
Income Taxes
Income Taxes	Note 8. Income Taxes The Company’s loss before income taxes was entirely generated from its U.S. operations. As a result of its continuing losses, the Company had no provision income As of December 31, 2023 and 2022, the Company had federal net operating loss (“NOL”) carryforwards of $87.3 million and $67.5 million, respectively, which will begin to expire in 2036. The Company had state NOLs of $116.2 million and $67.4 million as of December 31, 2023 and 2022, respectively, which will begin to expire in 2034. As of December 31, 2023 and 2022, the Company has federal research and development (“R&D”) credit carryforwards of $6.1 million and $3.9 million, respectively, which will begin to expire in 2039. As of December 31, 2023 and 2022, the Company also has California R&D credit carryforwards of $4.4 million and $3.0 million, respectively, which have an indefinite carryforward period. In general, if the Company experiences a greater than 50 percentage point aggregate change in ownership of certain significant stockholders over a three-year period (a “Section 382 ownership change”), utilization of its pre-change NOL carryforwards and the R&D credit carryforwards is subject to an annual limitation under Sections 382 and 383 of the Internal Revenue Code of 1986, as amended, and similar state laws. The annual limitation generally is determined by multiplying the value of the Company’s stock at the time of such ownership change, subject to certain adjustments, by the applicable long-term tax-exempt rate. Such limitations may result in expiration of a portion of the NOL carryforwards and R&D credit carryforwards before utilization and may be material. As of December 31, 2023, the Company has not determined to what extent a potential ownership change will impact the annual limitation that may be placed on the Company’s utilization of its NOL carryovers and R&D credit carryforwards. Due to the existence of the valuation allowance, limitations created by ownership changes, if any, will not impact the Company’s effective tax rate. The components of deferred tax assets and liabilities were as follows (in thousands): December 31, 2023 2022 Deferred tax assets: Accrued compensation $ 271 $ 296 Accrued other expense — 123 Stock compensation 1,647 5,303 Start-up costs and other intangibles 12,230 13,727 Net operating losses 28,613 20,131 Lease liability 83 157 Other deferred assets 23 32 Capitalized Research and Development Expenses 11,264 6,387 54,131 46,156 Less: valuation allowance (53,978) (45,929) Total deferred tax assets 153 227 Deferred tax liabilities: Depreciation (75) (89) ROU Asset (78) (138) Total deferred tax liabilities (153) (227) Net deferred income taxes $ — $ — A reconciliation of the difference between the provision (benefit) for income taxes and income taxes at the statutory U.S. federal income tax rate is as follows: December 31, 2023 2022 Income tax at statutory rate 21.0 % 21.0 % Convertible notes (11.1) (1.8) Contingent consideration 30.2 — Forward purchase agreements (11.5) — Warrants 1.3 — Stock compensation (2.0) (0.5) Officers compensation (5.5) — Transaction costs (7.9) — Change in valuation allowance (14.5) (18.7) Effective tax rate 0.0 % 0.0 % A reconciliation of unrecognized tax benefits at the beginning and end of 2023 and 2022 is as follows (in thousands): December 31, 2023 2022 Balance, beginning of year $ 11,061 $ 7,270 Increases due to current year tax positions 3,609 3,791 Decreases due to prior year tax positions — — Balance, end of year $ 14,670 $ 11,061 The Company has considered the amounts and probabilities of the outcomes that can be realized upon ultimate settlement with the tax authorities and determined unrecognized tax benefits should be established of $14.7 million and $11.1 million as of December 31, 2023 and 2022, respectively. The Company’s effective income tax rate would not be impacted if the unrecognized tax benefits are recognized. The Company does not expect its unrecognized tax benefits to change significantly over the next 12 months. The Company’s policy is to recognize interest expense and penalties related to income tax matters as a component of income tax expense. There were no accrued interest and penalties associated with uncertain tax positions as of December 31, 2023. The Company’s tax returns for all years since inception are open for audit. The Company measures deferred tax assets and liabilities using enacted tax rates that will apply in the years in which the temporary differences are expected to be recovered or paid.

Convertible Preferred Stock (Pr

Convertible Preferred Stock (Predecessor)	12 Months Ended
Convertible Preferred Stock (Predecessor)	Dec. 31, 2023
Convertible Preferred Stock (Predecessor)
Convertible Preferred Stock (Predecessor)	Note 9. Convertible Preferred Stock (Predecessor) As of December 31, 2022 (Predecessor), the Predecessor’s certificate of incorporation, as amended and restated, authorized the Predecessor to issue up to 44,666,035 shares of preferred stock at a par value of $0.0001 per share. The Predecessor’s convertible preferred stock was converted and exchanged into shares of the Company’s common stock at the Closing. The Predecessor had the following convertible preferred stock issued and outstanding at December 31, 2022: Preferential Carrying Value, Liquidation Net of Issuance Shares Shares Issued Per Share Value Costs Authorized and Outstanding Preference (in thousands) (in thousands) Series Series A 7,393,333 2,505,508 $ 5.4779 $ 13,725 $ 13,819 Series A-1 4,107,414 — 5.4779 — — Series A-2 4,846,750 4,846,750 5.4779 26,550 26,379 Series B 20,520,678 6,244,395 7.3097 45,645 43,896 Series B-1 136,805 — 7.3097 — — Series B-2 7,661,055 7,661,055 7.3097 56,000 53,855 44,666,035 21,257,708 $ 141,920 $ 137,949 The holders of the convertible preferred stock had various rights and preferences as follows: Voting Rights The holders of each share of convertible preferred stock, prior to the conversion of the preferred stock in connection with the Closing, previously had the right to one vote for each share of common stock into which such preferred stock could be converted, and with respect to such vote, such holder had full voting rights and powers equal to the voting rights and powers of the holders of common stock. Prior to the conversion of the preferred stock in connection with the Closing, each holder of the convertible preferred stock was entitled to vote, together with holders of common stock, with respect to any question upon which holders of common stock had the right to vote. Election of Directors The holders of Series A and Series A-2 convertible preferred stock, voting voting Dividends The holders of shares of Series B, Series B-1 and Series B-2 convertible preferred stock were entitled to non-cumulative dividends, out of any assets legally available therefore, on a pari passu basis and prior and in preference to any declaration or payment of any dividend on the Series A, Series A-1 and Series A-2 convertible preferred stock, or common stock of the Company, at the rate of $0.5847768 per calendar year for each share of Series B, Series B -1 -2 The holders of shares of Series A, Series A-1 and Series A-2 convertible preferred stock were entitled to non-cumulative dividends, out of any assets legally available therefore, on a pari passu basis and prior and in preference to any declaration or payment of any dividend on the common stock of the Company, at the rate of $0.4382 per calendar year for each share of Series A, Series A -1 -2 Declared but unpaid dividends with respect to a share of preferred stock shall, upon conversion of such share to common stock, be paid to the extent assets are legally available therefore in cash. There were no cash dividend declared through the Closing. Liquidation In the event of any liquidation event, the holders of Series B-2 convertible preferred stock would be entitled to receive, on a pari passu basis and prior and in preference to any distribution of the proceeds of such liquidation event (“Proceeds”) to the holders of Series A-2 convertible preferred stock, Series B convertible preferred stock, Series B-1 convertible preferred stock, Series A convertible preferred stock, Series A-1 convertible preferred stock and common stock, an amount per share equal to the Series B original issue price of $7.3097 per share, plus declared but unpaid dividends on each such share (the “Series B-2 Liquidation Preference”). Subject to the payments set forth above, in the event of any liquidation event, the holders of Series A-2 convertible preferred stock would be entitled to receive, on a pari passu basis and prior and in preference to any distribution of the Proceeds of such liquidation event to the holders of Series B convertible preferred stock, Series B-1 convertible preferred stock, Series A convertible preferred stock, Series A-1 convertible preferred stock and common stock, an amount per share equal to the Series A original issue price of $5.4779 per share, plus declared but unpaid dividends on each such share (the “Series A-2 Liquidation Preference”). Subject to the payments set forth above, in the event of any liquidation event, the holders of Series B convertible preferred stock and Series B-1 convertible preferred stock would be entitled to receive, on a pari passu basis and prior and in preference to any distribution of the Proceeds of such liquidation event to the holders of Series A convertible preferred stock, Series A-1 convertible preferred stock and common stock, an amount per share equal to the Series B original issue price of $7.3097 per share, plus declared but unpaid dividends on each such share (the “Series B Liquidation Preference”). Subject to the payments set forth above, the holders of Series A convertible preferred stock and Series A-1 convertible preferred stock would be entitled to receive, on a pari passu basis and prior and in preference to any distribution of the Proceeds of such Liquidation Event to the holders of common stock, an amount per share equal to the Series A issue price of $5.4779, plus declared but unpaid dividends on each such share (the “Series A Liquidation Preference”). Upon the completion of the distributions above, the remaining Proceeds available for distribution to stockholders, if any, would be distributed ratably among the holders of convertible preferred stock and common stock in proportion to the number of shares of common stock that would be held by each such holder if all shares of convertible preferred stock were converted into common stock at the then effective conversion price. Conversion Each share of convertible preferred stock can be converted, at the option of the holder thereof, at any time after the date of issuance of such share into such number of fully paid and non-assessable shares of common stock. The conversion rate is 1:1 initially. Each share of convertible preferred stock would automatically convert into shares of common stock based on the applicable conversion rate at the time in effect upon the earlier of (A) immediately prior to the closing, and conditioned upon such closing, of the sale of the Company’s common stock in an underwritten public offering at a public offering price per share of not less than (w) $7.3097 minus the sum of (x) the fair market value of the per unit membership interest of A1, as determined by the board of directors of the Company in good faith (the “A-1 Per Unit Price”) plus (y) the fair market value of the per unit membership interest of AC HoldCo, as determined by the board of directors of the Company in good faith (the “AC Per Unit Price”) plus (z) the fair market value of the per unit membership interest of Z HoldCo, as determined by the board of directors of the Company in good faith (together with the A-1 Per Unit Price and the AC Per Unit Price, the “Aggregate Spin-Out Value”), and yielding net proceeds (after discounts and commissions) to the Company of at least $50 million, or (B) on the date specified by affirmative vote at a meeting or by written consent from the holders of at least two-thirds In the event that the Preferred Supermajority enacts a conversion of the Series A Preferred Stock in conjunction with the consummation of an initial public offering of the common stock in which the public offering price per share of the common stock (the “IPO Per Share Price”) is less than 71.4286% of the then effective per share Series A-2 Liquidation Preference (the “Adjusted Series A-2 Preference Amount”), then the number of shares of common stock issuable with respect to each share of Series A convertible preferred stock, each share of Series A-1 convertible Preferred Stock and each share of Series A-2 convertible preferred stock will be equal to the greater of (A) the quotient obtained by dividing (x) the Adjusted Series A-2 Preference Amount by (y) the IPO Per Share Price, or (B) the quotient obtained by dividing the Series A original issue price of $5.4779 per share by the applicable conversion price for such series of the Series A Preferred Stock, each as in effect on the date of effective conversion. In the event of an automatic conversion in conjunction with the consummation of an initial public offering of the common stock in which the IPO Per Share Price is less than the Series B original issue price of $7.3097 per share, then the applicable conversion price for the Series B convertible preferred stock, the Series B-1 convertible preferred stock and the Series B-2 convertible preferred stock for purposes of the approved conversion will be the IPO Per Share Price, rounded to the nearest whole cent with one-half cent rounded up. Redemption The convertible preferred stock was not mandatorily redeemable. The Company classified the convertible preferred stock as temporary equity on the accompanying Predecessor’s consolidated balance sheets as these shares could be redeemed upon the occurrence of certain change in control events that are outside of the Company’s control. Convertible Preferred Stock Warrants Pursuant to the terms of the Company’s Bridge Note, in 2016 the Company issued Longitude warrants to purchase 342,011 shares of the Company’s Series B convertible preferred stock at an exercise price of $7.3097 per share. The warrants are exercisable, in whole or in part, from the date of issuance and expired on May 31, 2023.

Common Stock

Common Stock	12 Months Ended
Common Stock	Dec. 31, 2023
Common Stock
Common Stock	Note 10. Common Stock Predecessor As of December 31, 2022 (Predecessor), the Predecessor’s certificate of incorporation, as amended and restated, authorized the Predecessor to issue up to 207,450,050 shares of common stock at a par value of $0.0001 per share. As of December 31, 2022 (Predecessor), 138,848,177 shares were issued and 138,825,356 shares were outstanding. The holders of common stock were entitled to receive dividends whenever funds are legally available, when and if declared by the Predecessor’s board of directors, subject to the prior rights of the holders of the Predecessor’s convertible preferred stock. As of December 31, 2022 (Predecessor), no cash dividend had been declared to date. Each share of common stock was entitled to one vote. The number of authorized shares of common stock could be increased or decreased (but not below the number of shares thereof then outstanding) by the affirmative vote of the holders of shares of preferred stock and common stock, voting together as a single class. At the effective time of the Merger (the “Effective Time”), (i) each outstanding share of Old AEON common stock (on an as-converted basis after taking into effect the conversion of the outstanding warrants of Old AEON exercisable for shares of Old AEON preferred stock, the conversion of the shares of Old AEON preferred stock into Old AEON common stock in accordance with the governing documents of Old AEON as of the Effective Time, the conversion of the outstanding convertible notes of Old AEON into Old AEON common stock in accordance with the terms of such convertible notes and after giving effect to the issuance of Old AEON common stock in connection with the merger of ABP Sub, Inc. with and into Old AEON) issued and outstanding immediately prior to the Effective Time converted into the right to receive approximately 2.328 shares of the Company’s common stock. In addition, each share of Priveterra Class B common stock (“Founder Shares”), par value $0.0001 per share, issued and outstanding immediately prior to the Effective Time converted into one share of common stock (of which 3,450,000 Founder Shares are subject to certain vesting and forfeiture conditions). Successor As of December 31, 2023 (Successor), the Company’s certificate of incorporation, as amended and restated, authorized the Company to issue up to 500,000,000 shares of common stock at a par value of $0.0001 per share. As of December 31, 2023 (Successor), 37,159,600 shares were issued and outstanding Note 3 Forward Merger Common Stock Reserved The table below summarizes the Company’s reserved common stock for further issuance as of December 31, 2023 (Successor) and December 31, 2022 (Predecessor): December 31, 2023 2022 Conversion of convertible preferred stock — 21,257,708 Stock options issued and outstanding 3,846,972 9,694,890 Restricted stock units (unvested) 1,012,994 — Shares available for future issuance under the stock incentive plan 3,536,710 27,884,000 Warrants 14,479,999 — Contingent consideration 16,000,000 — Convertible preferred stock warrants outstanding — 342,011 Total common stock reserved 38,876,675 59,178,609

Share-based Compensation Stock

Share-based Compensation Stock Incentive Plans	12 Months Ended
Share-based Compensation Stock Incentive Plans	Dec. 31, 2023
Share-based Compensation Stock Incentive Plans
Share-based Compensation Stock Incentive Plans	Note 11. Share-based Compensation Stock Incentive Plans AEON 2013 Stock Incentive Plan (Predecessor) In 2013, the Predecessor established its 2013 Stock Incentive Plan (the “2013 Stock Incentive Plan”) as amended from time to time, that provides for the granting of nonqualified stock options, restricted stock and stock appreciation rights to employees, members of the board of directors and non-employee consultants. The 2013 Stock Incentive Plan provides for stock options to be granted with exercise prices not less than the estimated fair value of the Predecessor’s common stock, and incentive options to be granted to individuals owning more than 10% of the total combined voting power of all classes of stock of the Predecessor with exercise prices not less than 110% of the estimated fair value of the Predecessor’s common stock on the date of grant. Stock options granted generally expire ten years after their original date of grant and generally vest between three years to four years with 25% vesting on the first anniversary of the date of grant and then monthly vesting after that. Stock options granted to a 10% stockholder are exercisable up to five years from the date of grant. Restricted stock awards granted generally become fully vested between one As of December 31, 2022 (Predecessor), the aggregate number of shares available for future grant under the 2013 Stock Incentive Plan was 27,884,000 shares. Upon the Closing, the 2013 Stock Incentive Plan was terminated and the stock options were cancelled. The following table summarizes stock option activity under the Predecessor’s 2013 Stock Incentive Plan: Weighted Average Number of Exercise Shares Price Predecessor Outstanding, January 1, 2022 10,516,525 $ 1.51 Options granted — — Options forfeited (821,635) 1.23 Outstanding, December 31, 2022 9,694,890 1.53 Exercisable, December 31, 2022 9,694,890 $ 1.53 Outstanding, January 1, 2023 9,694,890 $ 1.53 Options granted — — Options forfeited — — Options cancelled in connection with Merger (9,694,890) 1.53 Outstanding, July 21, 2023 — — Exercisable, July 21, 2023 — $ — As of December 31, 2022 (Predecessor), the weighted average remaining contractual life of options outstanding and options exercisable were 2.5 years. The aggregate intrinsic value of options outstanding and options exercisable at December 31, 2022 (Predecessor) was $0.3 million. The aggregate intrinsic value was calculated as the difference between the exercise price of the underlying options and the estimated fair value of the Predecessor’s common stock at December 31, 2022 (Predecessor). All awards were vested prior to 2022. As such during the periods from January 1, 2023 to July 21, 2023 (Predecessor) and July 22, 2023 to December 31, 2023 (Successor), and the year ended December 31, 2022, the Company did not recognize share-based compensation expense related to stock options granted under the 2013 Stock Incentive Plan. As of December 31, 2022 and December 31, 2023, there was no unrecognized compensation expense related to non-vested stock options. 2019 Incentive Award Plan In June 2019, ABP Sub Inc., the Predecessor’s wholly owned subsidiary, established its 2019 Incentive Award Plan (the “2019 Incentive Award Plan”), as amended from time to time, that provides for the granting of incentive and nonqualified stock options, restricted stock units, restricted stock and stock appreciation rights to its employees, members of the board of directors and non-employee consultants. The 2019 Incentive Award Plan has similar grant terms as the Company’s 2013 Stock Incentive Plan. In connection with the Merger, the Successor assumed the 2019 Incentive Award Plan and all options and RSU awards that were outstanding immediately prior to the Merger were converted into substantially similar awards covering shares of the Successor’s common stock based on a conversion ratio of approximately 77.65 to 1 share. Additionally, the exercise price for the awards were repriced to $10.00 for all options. The options and RSU awards have lock-up provisions of one year from the Closing. The fair value of the replacement awards that were vested, based on the value immediately prior to the Merger, of $13.3 million were included as purchase consideration (see Note 3 Forward Merger Prior to the consummation of the Merger, a total of 237,500 shares of ABP Sub Inc. common stock were available for issuance under the 2019 Incentive Award Plan. Following the effective date of the 2023 Plan, in the event that an outstanding award expires or is cancelled for any reason, the shares allocable to the unexercised or cancelled portion of such award from the 2019 Incentive Award Plan will be added back to the shares of common stock available for issuance under the 2023 Incentive Award Plan. At the Closing, ABP had granted options to purchase a total of 45,130 ABP Sub options which converted into options to purchase 3,515,219 shares of the Company’s common stock, and a total of 15,059 RSU awards, which converted into RSU awards covering 1,169,366 shares of the Company’s common stock. Of such RSU awards, 127,801 RSUs accelerated vesting concurrently with the Merger. As such, the Company included an additional $1.8 million in purchase consideration (see Note 3 Forward Merger Note 6 Fair Value Measurements The following table summarizes stock option activity under 2019 Incentive Award Plan: Weighted Average Number of Exercise Shares Price Predecessor Outstanding, January 1, 2022 38,172 $ 986.36 Options granted 16,437 898.58 Options forfeited (9,075) 965.92 Outstanding, December 31, 2022 45,534 958.75 Exercisable, December 31, 2022 23,155 $ 958.86 Outstanding, January 1, 2023 45,534 $ 958.75 Options granted — — Options forfeited (404) 1,021.98 Outstanding, July 21, 2023 45,130 959.06 Exercisable, July 21, 2023 30,968 $ 956.64 Successor Outstanding, July 22, 2023 (converted) 3,515,219 $ 10.00 Options granted — — Options forfeited — — Outstanding, December 31, 2023 3,515,219 10.00 Exercisable, December 31, 2023 — $ — There were no options granted in the 2019 Incentive Plan during 2023. The weighted average fair value of options granted during the year ended December 31, 2022 was $488.02. There were no options granted in 2023. As of December 31, 2022 and December 31, 2023, the weighted average remaining contractual life of options outstanding and options exercisable was 8.1 years and 7.1 years. During the periods from January 1, 2023 to July 21, 2023 (Predecessor) and July 22, 2023 to December 31, 2023 (Successor), and the twelve months ended December 31, 2022 (Predecessor), the Company recognized $2.7 million, $2.4 million and $5.9 million, respectively, of share-based compensation expense related to stock options granted. As of December 31, 2022 and December 31, 2023, total unrecognized compensation expense related to nonvested stock options was $12.3 million and $4.9 million, respectively, which is expected to be recognized over the weighted-average remaining requisite service period of 24 months and 10 months, respectively. The following table summarizes restricted stock units activity under the 2019 Incentive Award Plan: Weighted Average Number of Grant Date Shares Fair Value Successor Outstanding, July 22, 2023 — $ — Granted 1,169,366 10.84 Vested (127,801) 10.84 Forfeited (28,571) 10.84 Outstanding, December 31, 2023 1,012,994 $ 10.84 During the periods from January 1, 2023 to July 21, 2023 (Predecessor) and July 22, 2023 to December 31, 2023 (Successor), the Company recognized $0.5 million and $0.8 million, respectively, of share-based compensation expense related to restricted stock units granted. As of December 31, 2023, total unrecognized compensation expense related to nonvested restricted stock units was $9.6 million, which is expected to be recognized over the weighted-average remaining requisite service period of 31 months. AEON Biopharma Inc 2023 Incentive Award Plan In connection with the Merger, the Company’s Board adopted, and its stockholders approved, the 2023 Plan, which became effective upon the consummation of the Merger, that provides for the granting of nonqualified stock options, restricted stock and stock appreciation rights to employees, members of the Board and non-employee consultants. The 2023 Plan will remain in effect until July 3, 2033, the tenth anniversary of the date the Company’s stockholders approved the 2023 Plan, unless earlier terminated. Stock options granted generally expire ten years after their original date of grant and generally vest between three years The initial aggregate number of shares of the Company’s common stock available for issuance under the 2023 Plan is equal to (a) 3,839,892 shares of common stock and (b) any shares which, as of the effective date of the 2023 Plan, are subject to an award outstanding under the ABP 2019 Plan (each, a “Prior Plan Award”), and which, on or following the effective date of the 2023 Plan, become available for issuance under the 2023 Plan as provided in the 2023 Plan. In addition, the number of shares of common stock available for issuance under the 2023 Plan will be annually increased on January 1 of each calendar year beginning in 2024 and ending in 2033 by an amount equal to the lesser of (i) 4% of the number of fully-diluted number of shares outstanding on the final day of the immediately preceding calendar year or (ii) such other number of shares as is determined by the Board. Any shares issued pursuant to the 2023 Plan may consist, in whole or in part, of authorized and unissued common stock, treasury common stock or common stock purchased on the open market. Weighted Average Number of Exercise Shares Price Outstanding, July 22, 2023 — $ — Options granted 331,753 5.47 Options forfeited — — Outstanding, December 31, 2023 331,753 $ 5.47 Exercisable, December 31, 2023 — $ — The weighted average fair value of options granted in 2023 was $3.18. The weighted average remaining contractual life of options outstanding and options exercisable was 9.6 years. During the periods from July 22, 2023 to December 31, 2023 (Successor), the Company recognized $0.1 million of share-based compensation expense related to stock options granted. As of December 31, 2023, total unrecognized compensation expense related to nonvested stock options was $0.9 million, which is expected to be recognized over the weighted-average remaining requisite service period of 35 months. Share-based Compensation Expense and Valuation Information The Company accounts for the measurement and recognition of compensation expense for all share-based awards based on the estimated fair value of the awards. The fair value of share-based awards is amortized on a straight-line basis over the requisite service period. The Company records share-based compensation expense net of actual forfeitures. During the periods from January 1, 2023 to July 21, 2023 (Predecessor) and July 22, 2023 to December 31, 2023 (Successor), and the twelve months ended December 31, 2022 (Predecessor), the Company recognized $2.8 million, $3.1 million and $5.9 million, respectively, of share-based compensation expense in selling, general and administrative expenses, respectively, and $0.4 million, $0.8 million and $1.3 million, respectively, in research and development expenses in the accompanying consolidated statements of operations and comprehensive (loss) income. The fair value of stock options under the 2019 Stock Incentive Award Plan was estimated using the following assumptions: December 31, 2023 2022 Expected volatility 57% 47% – 61% Risk-free interest rate 4.1% – 4.4% 1.87% – 3.92% Expected life (in years) 3.00-6.25 5.75 – 6.25 Expected dividend yield — — Fair Value of the Underlying Common Stock. Expected Life Expected Volatility Risk-free Interest Rate Expected Dividend Yield

Subsequent Events

Subsequent Events	12 Months Ended
Subsequent Events	Dec. 31, 2023
Subsequent Events
Subsequent Events	Note 12. Subsequent Events The Company has further evaluated subsequent events for recognition and remeasurement purposes as of and for the twelve months ended December 31, 2023. After review and evaluation, management has concluded that there were no material subsequent events as of the date that the financial statements were available to be issued, except as discussed below. Termination of Forward Purchase Agreements On March 18, 2024, the Company and ACM ARRT J LLC (“ACM”) entered into a termination agreement (the “ACM Termination Agreement”) terminating that certain Forward Purchase Agreement, dated June 29, 2023, by and among the Company and ACM (the “ACM FPA”). The ACM Termination Agreement provides that (i) ACM will retain 3,100,000 previously issued shares of Common Stock held by ACM pursuant to the ACM FPA and its respective subscription agreement (the “ACM Retained Shares”) and (ii) the Company will be subject to up to $1,500,000 in liquidated damages if it fails to meet certain registration requirements for the ACM Retained Shares, subject to certain conditions set forth in the ACM Termination Agreement. ACM did not pay any cash to the Company for the ACM Retained Shares and retained all portions of the Prepayment Amount associated with the ACM Retained Shares. On March 18, 2024, the Company and Polar entered into a termination agreement (the “Polar Termination Agreement”) terminating that certain Forward Purchase Agreement, dated June 29, 2023, by and among the Company and Polar (the “Polar FPA”). The Polar Termination Agreement provides that (i) Polar will retain 3,175,000 previously issued shares of Common Stock held by Polar pursuant to the Polar FPA and its respective subscription agreement (the “Polar Retained Shares”) and (ii) the Company will be subject to up to $1,500,000 in liquidated damages if it fails to meet certain registration requirements for the Polar Retained Shares, subject to certain conditions set forth in the Polar Termination Agreement. Polar did not pay any cash to the Company for the Polar Retained Shares and retained all portions of the Prepayment Amount associated with the Polar Retained Shares. As a result of the ACM Termination Agreement and Polar Termination Agreement, the Company expects to record a charge to the consolidated statement of operations of approximately $20.3 million during the quarter ended March 31, 2024 to reverse the related subscription receivable and derivative liability on the accompanying consolidated balance sheet. Convertible Note Subscription and License Agreement Amendment On March 19, 2024, the Company entered into a subscription agreement with Daewoong (the “Subscription Agreement”) relating to the sale and issuance by the Company of senior secured convertible notes (each, a “Convertible Note” and together, the “Convertible Notes”) in the principal amount of up to $15.0 million, which are convertible into shares of the Company’s common stock, subject to certain conditions and limitations set forth in each Convertible Note. Each Convertible Note will contain customary events of default, will accrue interest at an annual rate of 15.79% and will have a maturity date that is three years from the funding date, unless earlier repurchased, converted or redeemed in accordance with its terms prior to such date. The Company will use the net proceeds from each Convertible Note to support the late-stage clinical development of its lead product candidate ABP-450 and for general working capital purposes. Pursuant to the terms of the Subscription Agreement, on March 24, 2024, the Company issued and sold to Daewoong one Convertible Note in the principal amount of $5.0 million. The Subscription Agreement further provides that the Company will issue and sell to Daewoong a second Convertible Note in the principal amount of $10.0 million no later than thirty On March 19, 2024, the Company entered into a Fourth Amendment to the License Agreement (the “License Agreement Amendment”) with Daewoong, which amends the License Agreement. Pursuant to the terms of the License Agreement Amendment, the License Agreement will terminate if, over any six month period, (a) the Company ceases to commercialize ABP-450 in certain territories specified in the License Agreement and (b) the Company ceases to advance any clinical studies of ABP-450 in such territories. The License Agreement Amendment also provides that, in the event that the License Agreement is terminated for the foregoing reasons, Daewoong will have the right to purchase all Know-How (as defined in the License Agreement) related to ABP-450 for a price of $1.00 (the “Termination Purchase Right”). The Termination Purchase Right will terminate and expire upon Daewoong’s sale of 50% of its common stock, including common stock held by its affiliates and common stock that would be issued upon an Automatic Conversion or Optional Conversion (as defined in the Convertible Notes).

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
Summary of Significant Accounting Policies (Policies)	Dec. 31, 2023
Summary of Significant Accounting Policies
Basis of Presentation	Basis of Presentation The accompanying consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America (“U.S. GAAP”). The consolidated financial statements include the accounts of the Company and its controlled subsidiaries. On July 21, 2023, AEON completed the Merger with Old AEON, with Old AEON surviving the merger as a wholly-owned subsidiary of the Company, the accounting acquirer. The transaction was accounted for as a forward merger asset acquisition. Unless the context otherwise requires, the “Company,” for periods prior to the Closing, refers to Old AEON, AEON Biopharma Sub, Inc. (“Predecessor”), and for the periods after the Closing, refers to AEON Biopharma, Inc., including AEON Biopharma Sub, Inc. (“Successor”). As a result of the Merger, the results of operations, financial position and cash flows of the Predecessor and Successor are not directly comparable. AEON Biopharma Sub, Inc. was deemed to be the predecessor entity. Accordingly, the historical financial statements of AEON Biopharma Sub, Inc. became the historical financial statements of the combined Company, upon the consummation of the Merger. As a result, the financial statements included in this report reflect (i) the historical operating results of AEON Biopharma Sub, Inc. prior to the Merger and (ii) the combined results of the Company, including AEON Biopharma Sub, Inc., following the Closing. The accompanying financial statements include a Predecessor period, which includes the period through July 21, 2023 concurrent with the Merger, and a Successor period from July 22, 2023 through December 31, 2023. A black line between the Successor and Predecessor periods has been placed in the consolidated financial statements and in the tables to the notes to the consolidated financial statements to highlight the lack of comparability between these two periods.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates, judgments and assumptions that affect the amounts reported in the financial statements and disclosures made in the accompanying notes. The Company’s most significant estimates relate to the research and development accruals, valuation of common stock and related stock-based compensation, and the fair values of the contingent consideration, forward purchase agreements, in-process research and development, warrant liabilities, convertible notes, among others. Although the Company bases estimates on historical experience, knowledge of current events and actions it may undertake in the future, and on various other assumptions that are believed to be reasonable, the results of which form the basis for making judgments over the carrying values of assets and liabilities, this process may result in actual results differing materially from those estimated amounts used in the preparation of the financial statements.
Segment Reporting	Segment Reporting Operating segments are identified as components of an enterprise about which separate discrete financial information is available for evaluation by the chief operating decision-maker in making decisions regarding resource allocation and assessing performance. The Company provides segment financial information and results for its segments based on the segregation of revenues and expenses that its chief operating decision makers review for purposes of allocating resources and evaluating its financial performance. As of December 31, 2023 and December 31, 2022, the Company operates and manages its business as one operating and reportable segment.
Risk and Uncertainties	Risk and Uncertainties The Company is subject to risks common to early-stage companies in the pharmaceutical industry including, but not limited to, dependency on the clinical and commercial success of its current and any future product candidates, ability to obtain regulatory approval of its current and any future product candidates, the need for substantial additional financing to achieve its goals, uncertainty of broad adoption of its approved products, if any, by physicians and patients and significant competition. The Company relies on Daewoong Pharmaceutical Co., Ltd. (“Daewoong”), a South Korean pharmaceutical manufacturer, as an exclusive and sole supplier to manufacture the Company’s source material for product candidates. Any termination or loss of significant rights, including exclusivity, under the Company’s license and supply agreement with Daewoong (the “Daewoong Agreement”) would materially and adversely affect the Company’s commercialization of its products. See Note 7 Commitments and Contingencies
Property and Equipment	Property and Equipment Property and equipment are carried at cost less accumulated depreciation and amortization. The cost of property and equipment is depreciated over the estimated useful lives of the respective assets. The Company’s furniture and fixtures are depreciated on a straight-line basis over a period of seven years. Equipment is depreciated over a useful life of five years. Leasehold improvements are amortized over the lesser of the estimated useful life of the asset or the related lease term. Property and equipment, net, as of December 31, 2022 and December 31, 2023 are as follows (in thousands): Successor Predecessor December 31, December 31, 2023 2022 Furniture and fixtures $ 199 $ 199 Equipment 237 237 Leasehold improvements 66 66 Property and equipment 502 502 Accumulated depreciation (170) (71) Property and equipment, net $ 332 $ 431
Other Accrued Expenses	Other Accrued Expenses December 31, 2023 2022 Successor Predecessor Legal expenses $ 1,867 $ — Excise tax liability 569 — Operating lease liability - short term portion 278 257 Daewoong vial usage 33 202 Remaining other accrued expenses 843 281 Total other accrued expenses $ 3,590 $ 740
Convertible Notes (Predecessor)	Convertible Notes (Predecessor) The Company elected to account for its Predecessor convertible promissory notes at fair value at inception and at each subsequent reporting date. Subsequent changes in fair value were recorded as a component of non-operating loss in the Predecessor’s consolidated statements of operations and comprehensive (loss) income or as a component of other comprehensive (loss) income for changes related to instrument-specific credit risk. As a result of electing the fair value option, direct costs and fees related to the convertible promissory notes are expensed as incurred. The convertible promissory notes were converted into shares of the Company’s common stock at the Closing.
Contingent Consideration (Successor)	Contingent Consideration (Successor) The Company accounts for its contingent consideration as either equity-classified or liability-classified instruments based on an assessment of the Contingent Consideration Shares specific terms (as further defined in Note 6) and applicable authoritative guidance in ASC 480, Distinguishing Liabilities from Equity (“ASC 480”) and ASC 815, Derivatives and Hedging (“ASC 815”). Based on the appropriate guidance, the Company determined that the Contingent Consideration Shares would be classified as a liability on the Successor’s consolidated balance sheets and remeasured at each reporting period with changes to fair value recorded to the Successor’s consolidated statements of operations and comprehensive (loss) income.
Forward Purchase Agreements (Successor)	Forward Purchase Agreements (Successor) Based on the applicable guidance in ASC 480, ASC 815, ASC 505, Equity (“ASC 505”) and Staff Accounting Bulletin Topic 4.E, Receivables from Sale of Stock (“SAB 4E”), the Company has determined that each of its forward purchase agreements entered in connection with the Merger is a freestanding hybrid financial instrument comprising a subscription receivable and embedded features, which have been bifurcated and accounted for separately as derivative instruments. The Company has recorded the derivatives as liabilities and measured them at fair value with the initial value of the derivative recorded as a loss “on the line” in the Successor’s opening accumulated deficit. On the line describes those transactions triggered by the consummation of the Merger that are not recognized in the consolidated financial statements of the Predecessor or the Successor as they are not directly attributable to either period but instead were contingent on the Merger. For more information, see Note 3 Forward Merger
Warrants (Successor)	Warrants (Successor) The Company accounts for warrants as either equity-classified or liability-classified instruments based on an assessment of the warrant’s specific terms and applicable authoritative guidance in ASC 480 and ASC 815. The assessment considers whether the warrants are freestanding financial instruments and meet all of the requirements for equity classification, including whether the warrants are indexed to the Company’s own shares of common stock, among other conditions for equity classification. This assessment is conducted at the time of warrant issuance and as of each subsequent quarterly period end date while the warrants are outstanding. For issued or modified warrants that meet all of the criteria for equity classification, the warrants are required to be recorded as a component of additional paid-in capital at the time of issuance. For issued or modified warrants that do not meet all the criteria for equity classification, the warrants are required to be recorded at their initial fair value on the date of issuance, and each balance sheet date thereafter until settlement. Changes in the estimated fair value of the warrants are recognized in the consolidated statements of operations and comprehensive (loss) income.
Convertible Preferred Stock (Predecessor)	Convertible Preferred Stock (Predecessor) The Company recorded its Predecessor convertible preferred stock at their respective issuance price, less issuance costs on the dates of issuance. The convertible preferred stock is classified outside of permanent equity as temporary equity in the accompanying Predecessor’s consolidated balance sheets. Although the convertible preferred stock is not redeemable at the holder’s option, upon certain change in control events that are outside of the Company’s control, including liquidation, sale or transfer of control of the Company, holders of the convertible preferred stock may have the right to receive their liquidation preference to any distribution of the proceeds under the terms of the Company’s amended and restated certificate of incorporation. The Company has not adjusted the carrying values of the convertible preferred stock to the liquidation preferences of such shares since it is uncertain whether or when a redemption event will occur. Subsequent adjustments to increase the carrying values to the redemption values will be made only when it becomes probable that such redemption will occur. As part of the Merger, each share of Old AEON common stock issued with respect to the Old AEON convertible preferred stock was converted into approximately 2.328 shares of common stock and the right to receive a pro-rata portion of the contingent consideration.
Fair Value of Financial Instruments	Fair Value of Financial Instruments Fair value is defined as the exchange price that would be received for an asset or an exit price paid to transfer a liability in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Valuation techniques used to measure fair value must maximize the use of observable inputs and minimize the use of unobservable inputs. Fair value measurements are based on a three-tiered valuation hierarchy, which is classified and disclosed by the Company in one of the three categories as follows: · Level 1 — Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities; · Level 2 — Inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities in active markets; quoted prices in markets that are not active; or other inputs that are observable, either directly or indirectly, or can be corroborated by observable market data for substantially the full term of the asset or liability; and · Level 3 — Prices or valuation techniques that require unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. The categorization of a financial instrument within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement.
Leases	Leases The Company determines whether a contract is, or contains, a lease at inception. Right-of-use (“ROU”) assets represent the Company’s right to use an underlying asset during the lease term, and lease liabilities represent the Company’s obligation to make lease payments arising from the lease. ROU assets and lease liabilities are recognized at lease commencement based upon the estimated present value of unpaid lease payments over the lease term using the Company’s incremental borrowing rate applicable to the underlying asset unless the implicit rate is readily determinable. The Company determines the lease term as the noncancellable period of the lease, and may include options to extend or terminate the lease when it is reasonably certain that the Company will exercise that option. Leases with a term of 12 months or less are not recognized on the balance sheets.
Research and Development Expenses	Research and Development Expenses Research and development costs are expensed as incurred. Research and development expenses consist primarily of costs associated with clinical studies including clinical trial design, clinical site reimbursement, data management, travel expenses and the cost of products used for clinical trials and internal and external costs associated with the Company’s regulatory compliance and quality assurance functions, including the costs of outside consultants and contractors that assist in the process of submitting and maintaining regulatory filings, and overhead costs. Additionally, research and development expenses include employee compensation, including stock-based compensation, supplies, consulting, prototyping, testing, materials, travel expenses and an allocation of facility overhead expenses. Costs incurred in obtaining technology licenses are charged to acquired in-process research and development (“IPR&D”) if the technology licensed has not reached technological feasibility and has no alternative future use. The acquired IPR&D recorded at the Closing was recorded “on the line” in the Successor’s opening accumulated deficit. The Company accrues the expenses for its clinical trial activities performed by third parties, including clinical research organizations and other service providers, based upon estimates of the work completed over the life of the individual study in accordance with associated agreements. The Company determines these estimates through discussion with internal personnel and outside service providers as to progress or stage of completion of trials or services pursuant to contracts with clinical research organizations and other service providers and the agreed-upon fee to be paid for such services. Payments made to outside service providers in advance of the performance of the related services are recorded as prepaid expenses and other current assets until the services are rendered. There have been no material adjustments to the Company’s estimates for clinical trial expenses through December 31, 2022 (Predecessor) and December 31, 2023 (Successor).
Stock-Based Compensation	Stock-Based Compensation The Company recognizes compensation expense for all share-based awards. The Company accounts for stock-based compensation as measured at grant date, based on the fair value of the award. The Company measures the fair value of awards granted using the Black-Scholes option pricing model, which requires the input of subjective assumptions, including the estimated fair value of common stock, the expected volatility of the Company’s common stock, expected risk-free interest rate, and the option’s expected life. The Company also evaluates the impact of modifications made to the original terms of equity awards when they occur. The fair value of equity awards that are expected to vest is amortized on a straight-line basis over the requisite service period. Stock-based compensation expense is recognized net of actual forfeitures when they occur, as an increase to additional paid-in capital or noncontrolling interest in the consolidated balance sheets and in selling, general and administrative or research and development expenses in the consolidated statements of operations and comprehensive (loss) income. All stock-based compensation costs are recorded in the consolidated statements of operations and comprehensive (loss) income based upon the underlying employee’s role within the Company.
Noncontrolling Interest (Predecessor)	Noncontrolling Interest (Predecessor) ABP Sub Inc., the Predecessor’s wholly owned subsidiary, granted stock options to certain employees and nonemployee consultants of ABP Sub Inc. The Company accounts for stock-based compensation expense recognized by ABP Sub Inc. as an increase in noncontrolling interest in the accompanying consolidated financial statements. At the Closing, all such shares were either canceled or converted into AEON shares. See Note 11 Share-based Compensation
Income Taxes	Income Taxes The Company accounts for income taxes under the asset and liability method, which requires, among other things, that deferred income taxes be provided for temporary differences between the tax basis of the Company’s assets and liabilities and their financial statement reported amounts. In addition, deferred tax assets are recorded for the future benefit of utilizing net operating losses and research and development credit carryforwards and are measured using the enacted tax rates and laws that will be in effect when such items are expected to reverse. A valuation allowance is provided against deferred tax assets unless it is more likely than not that they will be realized. The Company records uncertain tax positions on the basis of a two-step process whereby (i) it determines whether it is more likely than not that the tax positions will be sustained on the basis of the technical merits of the position and (ii) for those tax positions that meet the more-likely-than-not recognition threshold, it recognizes the largest amount of tax benefit that is more than 50 percent likely to be realized upon ultimate settlement with the related tax authority. The Company recognizes interest and penalties related to unrecognized tax benefits within the income tax expense line in the accompanying consolidated statements of operations and comprehensive (loss) income. Any accrued interest and penalties related to uncertain tax positions will be reflected as a liability in the consolidated balance sheets.
Net Loss Per Share Attributable to Common Stockholders	Net Loss Per Share Attributable to Common Stockholders Prior to the Merger, the Predecessor calculated basic and diluted net loss per share to common stockholders in conformity with the two-class method required for companies with participating securities. The Company considered all series of convertible preferred stock to be participating securities as they participate in any dividends declared by the Company. Under the two-class method, undistributed earnings allocated to these participating stockholders were subtracted from net income in determining net income attributable to common stockholders. Net loss attributable to common stockholders was not allocated to convertible preferred stock as the holders of convertible preferred stock did not have a contractual obligation to share in losses. Subsequent to the Merger, the Company only has one class of shares. Basic net loss per share is computed by dividing the net loss attributable to common stockholders by the weighted average number of shares of common stock outstanding during the period, without consideration for potentially dilutive shares of common stock in Predecessor periods. For Predecessor periods, diluted net loss per share was computed by dividing the net loss attributable to common stockholders by the weighted average number of shares of common stock and potentially dilutive securities outstanding for the period using the “treasury stock,” “if converted” or “two-class” method unless their inclusion would have been anti-dilutive. For purposes of the diluted net loss per share calculation, convertible preferred stock, warrants, convertible notes and common stock options were considered as potentially dilutive securities. Since the Company was in a loss position for the periods from January 1, 2023 to July 21, 2023 (Predecessor) and for the twelve months ended December 31, 2022, basic net loss per share is the same as diluted net loss per share as the inclusion of all potentially dilutive common shares was anti-dilutive. For the periods from July 22, 2023 to December 31, 2023 (Successor), the impact of the options and non-vested RSU’s were anti-dilutive, and as such, there was no difference between the weighted-average number of shares used to calculate basic and diluted earnings per share for the periods presented. Basic and diluted net loss per share for the year ended December 31, 2022 was calculated as follows (in thousands, except share and per share amounts): Year ended December 31, 2022 (Predecessor) Net loss available to common stockholders $ (52,556) Weighted average common shares outstanding, basic and diluted 138,848,177 Net loss per share attributable to common stockholders, basic and diluted $ (0.38) Basic and diluted net loss per share for the periods from January 1, 2023 to July 21, 2023 (Predecessor) and July 22, 2023 to December 31, 2023 (Successor) were calculated as follows (in thousands, except share and per share amounts): Period from January 1, 2023 to July 21, 2023 (Predecessor) Net loss available to common stockholders $ (60,678) Weighted average common shares outstanding, basic and diluted 138,848,177 Net loss per share attributable to common stockholders, basic and diluted $ (0.44) Period from July 22, 2023 to December 31, 2023 (Successor) Net income available to common stockholders $ 24,046 Weighted average common shares outstanding, basic and diluted 37,159,600 Net income per share attributable to common stockholders, basic and diluted $ 0.65 The following potentially dilutive securities outstanding have been excluded from the computation of diluted weighted average shares outstanding because such securities have an anti-dilutive impact: December 31, 2023 2022 Successor Predecessor Warrants 14,479,999 — Contingent consideration 16,000,000 — Contingent founder shares 3,450,000 — Convertible preferred stock outstanding — 21,257,708 Convertible preferred stock warrants outstanding — 342,011 Common stock options and restricted stock units 4,888,537 9,694,890 38,818,536 31,294,609
Contingencies	Contingencies The Company may be, from time to time, a party to various disputes and claims arising from normal business activities. The Company continually assesses litigation to determine if an unfavorable outcome would lead to a probable loss or reasonably possible loss which could be estimated. The Company accrues for all contingencies at the earliest date at which the Company deems it probable that a liability has been incurred and the amount of such liability can be reasonably estimated. If the estimate of a probable loss is a range and no amount within the range is more likely than another, the Company accrues the minimum of the range. In the cases where the Company believes that a reasonably possible loss exists, the Company discloses the facts and circumstances of the litigation, including an estimable range, if possible.
Recently Adopted Accounting Standards	Recently Adopted Accounting Standards In June 2016, the FASB issued an accounting standards update (ASU 2016-13) that amended the guidance on the measurement of credit losses on financial instruments. The guidance amended the impairment model by requiring entities to use a forward-looking approach based on expected losses to estimate credit losses on certain financial instruments. In November 2019, the FASB issued an update to the guidance to defer the effective date for all entities except SEC filers that are not smaller reporting companies to fiscal years beginning after December 15, 2022, including interim periods within those years. The Predecessor adopted this standard in the first quarter of 2023. The adoption of this standard did not have an impact on the Company’s consolidated financial statements or related disclosures. In August 2020, the FASB issued an accounting standards update that simplified the accounting for certain financial instruments with characteristics of liabilities and equity by reducing the number of accounting models for convertible debt and convertible preferred stock instruments. It also amended the accounting for certain contracts in an entity’s own equity that are currently accounted for as derivatives because of specific settlement provisions. In addition, the new guidance modified how particular convertible instruments and certain contracts that may be settled in cash or shares impact the diluted EPS computation. The guidance will be effective for the Company for fiscal years beginning after December 15, 2023, including interim periods within those fiscal years, with early adoption permitted for fiscal years beginning after December 15, 2020 but only if the adoption is as of the beginning of a fiscal year. The Predecessor adopted this standard on January 1, 2023. The adoption of this standard did not have an impact on the Company’s consolidated financial statements or related disclosures. Other recent accounting pronouncements issued by the FASB, the American Institute of Certified Public Accountants, and the Securities and Exchange Commission (the “SEC”) did not, or are not believed by management to, have a material impact on the Company’s financial position, results of operations or cash flows.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	12 Months Ended
Summary of Significant Accounting Policies (Tables)	Dec. 31, 2023
Summary of Significant Accounting Policies
Schedule of property and equipment, net	Successor Predecessor December 31, December 31, 2023 2022 Furniture and fixtures $ 199 $ 199 Equipment 237 237 Leasehold improvements 66 66 Property and equipment 502 502 Accumulated depreciation (170) (71) Property and equipment, net $ 332 $ 431
Schedule of other accrued expenses	December 31, 2023 2022 Successor Predecessor Legal expenses $ 1,867 $ — Excise tax liability 569 — Operating lease liability - short term portion 278 257 Daewoong vial usage 33 202 Remaining other accrued expenses 843 281 Total other accrued expenses $ 3,590 $ 740
Schedule of basic and diluted net loss per share	Year ended December 31, 2022 (Predecessor) Net loss available to common stockholders $ (52,556) Weighted average common shares outstanding, basic and diluted 138,848,177 Net loss per share attributable to common stockholders, basic and diluted $ (0.38) Period from January 1, 2023 to July 21, 2023 (Predecessor) Net loss available to common stockholders $ (60,678) Weighted average common shares outstanding, basic and diluted 138,848,177 Net loss per share attributable to common stockholders, basic and diluted $ (0.44) Period from July 22, 2023 to December 31, 2023 (Successor) Net income available to common stockholders $ 24,046 Weighted average common shares outstanding, basic and diluted 37,159,600 Net income per share attributable to common stockholders, basic and diluted $ 0.65
Schedule of potentially dilutive securities outstanding have been excluded from the computation of diluted weighted average shares outstanding because such securities have an anti-dilutive impact	December 31, 2023 2022 Successor Predecessor Warrants 14,479,999 — Contingent consideration 16,000,000 — Contingent founder shares 3,450,000 — Convertible preferred stock outstanding — 21,257,708 Convertible preferred stock warrants outstanding — 342,011 Common stock options and restricted stock units 4,888,537 9,694,890 38,818,536 31,294,609

Forward Merger (Tables)

Forward Merger (Tables)	12 Months Ended
Forward Merger (Tables)	Dec. 31, 2023
Forward Merger
Schedule of purchase price calculation	The following is a summary of the purchase price calculation (in thousands except share and per share data) . Number of shares issued as consideration in the Merger 16,500,000 Shares issued for interim convertible notes related to Committed Financing 2,226,182 Total number of shares of common stock of the combined company 18,726,182 Multiplied by the Priveterra share price, as of the Closing $ 10.84 Total $ 202,992 Fair value of contingent consideration 125,699 Replacement of share-based payment awards 13,331 Assumed liabilities 125 Total purchase price $ 342,147
Schedule of allocation of purchase price	The allocation of the purchase price was as follows (in thousands). Cash $ 2,001 Net working capital (excluding cash) (16,182) Other assets and liabilities 775 Acquired in-process research and development 348,000 Net assets acquired 334,594 Loss on consolidation of VIE 7,553 Total purchase price $ 342,147
Schedule of number of shares of common stock issued and amounts recorded on the line to arrive at the opening consolidated balance sheet of the Successor	Common shares Common stock amount Subscription Receivable APIC Accumulated Deficit Priveterra closing equity as of July 21, 2023 557,160 $ — $ — $ 5,937 $ (12,897) Shares issued as Consideration in the Merger Note 1 16,500,000 2 — 192,189 — Merger Consideration - Shares issued for Interim Convertible Notes related to Committed Financing Note 5 2,226,182 — — 24,132 — Stock-Compensation for Class B Founder Shares Note 3 6,900,000 1 — 68,972 (68,972) Forward Purchase Agreements Note 6 6,275,000 1 (60,710) 66,714 (38,255) Issuance of Make-Whole derivative Note 6 — — — — (427) Shares issued in New Money PIPE Subscription Agreements Note 6 1,001,000 — — 10,844 (6,433) Shares issued for Committed Financing Note 6 3,571,429 — — 38,714 (13,714) Contingent Founder Shares Note 6 — — — (31,401) — Acquired IPR&D and Loss on Consolidation of VIE Note 3 — — — — (355,553) Other Miscellaneous 128,829 — — 1,397 (1,397) Total 37,159,600 $ 4 $ (60,710) $ 377,498 $ (497,648)

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
Fair Value Measurements (Tables)	Dec. 31, 2023
Fair Value Measurements
Summary of recurring measurements for assets and liabilities at fair value	The following details the Company’s recurring measurements for assets and liabilities at fair value (in thousands): Convertible Notes Warrant Liabilities Contingent Consideration Embedded Forward Purchase Agreement and Make Whole Derivative (Level 3) (Level 1) (Level 3) (Level 3) Predecessor Balance, December 31, 2022 $ 131,292 $ - $ - $ - Issuance of convertible notes 14,000 - - - Change in fair value 19,359 - - - Conversion to common shares (164,651) - - - Balance, July 21, 2023 - - - - Successor Balance, July 22, 2023 - 3,765 157,100 32,677 Additions - - - - Change in fair value - (2,318) (52,750) 8,366 Balance, December 31, 2023 $ - $ 1,447 $ 104,350 $ 41,043
Forward Purchase Agreements
Fair Value Measurements
Summary of significant inputs as of the valuation dates	December 31, July 21, 2023 2023 Stock Price $ 7.20 $ 10.84 Expected volatility 52.00% 55.00% Risk-free interest rate 4.48% 4.82% Expected life (in years) 1.56 2 Expected dividend yield — —

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
Commitments and Contingencies (Tables)	Dec. 31, 2023
Commitments and Contingencies.
Schedule of supplemental balance sheet information related to the operating lease	The following table summarizes supplemental balance sheet information related to the operating lease as of December 31, 2023 (in thousands): Minimum lease payments by fiscal year 2024 $ 292 Total future minimum lease payments 292 Less: Imputed interest (14) Present value of lease payments 278 Less: Current portion (included in other accrued expenses) (278) Noncurrent operating lease liability $ — Operating lease right-of-use asset $ 262 Remaining lease term in years 0.9 Discount rate 10 %
Schedule of supplemental disclosures of operating cost and cash flow information related to operating leases	Year Ended December 31, 2023 2022 Predecessor January 1, 2023 to July 21, 2023 Successor July 22, 2023 to December 31, 2023 Predecessor Cost of operating leases $ 153 $ 122 $ 279 Cash paid for operating leases 180 129 248

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
Income Taxes (Tables)	Dec. 31, 2023
Income Taxes
Schedule of components of deferred tax assets and liabilities	The components of deferred tax assets and liabilities were as follows (in thousands): December 31, 2023 2022 Deferred tax assets: Accrued compensation $ 271 $ 296 Accrued other expense — 123 Stock compensation 1,647 5,303 Start-up costs and other intangibles 12,230 13,727 Net operating losses 28,613 20,131 Lease liability 83 157 Other deferred assets 23 32 Capitalized Research and Development Expenses 11,264 6,387 54,131 46,156 Less: valuation allowance (53,978) (45,929) Total deferred tax assets 153 227 Deferred tax liabilities: Depreciation (75) (89) ROU Asset (78) (138) Total deferred tax liabilities (153) (227) Net deferred income taxes $ — $ —
Schedule of reconciliation of the difference between the provision (benefit) for income taxes and income taxes at the statutory U.S. federal income tax rate	December 31, 2023 2022 Income tax at statutory rate 21.0 % 21.0 % Convertible notes (11.1) (1.8) Contingent consideration 30.2 — Forward purchase agreements (11.5) — Warrants 1.3 — Stock compensation (2.0) (0.5) Officers compensation (5.5) — Transaction costs (7.9) — Change in valuation allowance (14.5) (18.7) Effective tax rate 0.0 % 0.0 %
Schedule of reconciliation of unrecognized tax benefits	A reconciliation of unrecognized tax benefits at the beginning and end of 2023 and 2022 is as follows (in thousands): December 31, 2023 2022 Balance, beginning of year $ 11,061 $ 7,270 Increases due to current year tax positions 3,609 3,791 Decreases due to prior year tax positions — — Balance, end of year $ 14,670 $ 11,061

Convertible Preferred Stock (_2

Convertible Preferred Stock (Predecessor) (Tables)	12 Months Ended
Convertible Preferred Stock (Predecessor) (Tables)	Dec. 31, 2023
Convertible Preferred Stock (Predecessor)
Schedule of convertible preferred stock issued and outstanding	The Predecessor had the following convertible preferred stock issued and outstanding at December 31, 2022: Preferential Carrying Value, Liquidation Net of Issuance Shares Shares Issued Per Share Value Costs Authorized and Outstanding Preference (in thousands) (in thousands) Series Series A 7,393,333 2,505,508 $ 5.4779 $ 13,725 $ 13,819 Series A-1 4,107,414 — 5.4779 — — Series A-2 4,846,750 4,846,750 5.4779 26,550 26,379 Series B 20,520,678 6,244,395 7.3097 45,645 43,896 Series B-1 136,805 — 7.3097 — — Series B-2 7,661,055 7,661,055 7.3097 56,000 53,855 44,666,035 21,257,708 $ 141,920 $ 137,949

Common Stock (Tables)

Common Stock (Tables)	12 Months Ended
Common Stock (Tables)	Dec. 31, 2023
Common Stock
Schedule of common stock reserved for future issuance	December 31, 2023 2022 Conversion of convertible preferred stock — 21,257,708 Stock options issued and outstanding 3,846,972 9,694,890 Restricted stock units (unvested) 1,012,994 — Shares available for future issuance under the stock incentive plan 3,536,710 27,884,000 Warrants 14,479,999 — Contingent consideration 16,000,000 — Convertible preferred stock warrants outstanding — 342,011 Total common stock reserved 38,876,675 59,178,609

Share-based Compensation Stoc_2

Share-based Compensation Stock Incentive Plans (Tables)	12 Months Ended
Share-based Compensation Stock Incentive Plans (Tables)	Dec. 31, 2023
AEON 2013 Stock Incentive Plan
Share-based Compensation Stock Incentive Plans
Schedule of stock option activity	Weighted Average Number of Exercise Shares Price Predecessor Outstanding, January 1, 2022 10,516,525 $ 1.51 Options granted — — Options forfeited (821,635) 1.23 Outstanding, December 31, 2022 9,694,890 1.53 Exercisable, December 31, 2022 9,694,890 $ 1.53 Outstanding, January 1, 2023 9,694,890 $ 1.53 Options granted — — Options forfeited — — Options cancelled in connection with Merger (9,694,890) 1.53 Outstanding, July 21, 2023 — — Exercisable, July 21, 2023 — $ —
Summary of restricted stock units activity	Weighted Average Number of Exercise Shares Price Outstanding, July 22, 2023 — $ — Options granted 331,753 5.47 Options forfeited — — Outstanding, December 31, 2023 331,753 $ 5.47 Exercisable, December 31, 2023 — $ —
ABP Sub Inc. 2019 Incentive Award Plan
Share-based Compensation Stock Incentive Plans
Schedule of stock option activity	Weighted Average Number of Exercise Shares Price Predecessor Outstanding, January 1, 2022 38,172 $ 986.36 Options granted 16,437 898.58 Options forfeited (9,075) 965.92 Outstanding, December 31, 2022 45,534 958.75 Exercisable, December 31, 2022 23,155 $ 958.86 Outstanding, January 1, 2023 45,534 $ 958.75 Options granted — — Options forfeited (404) 1,021.98 Outstanding, July 21, 2023 45,130 959.06 Exercisable, July 21, 2023 30,968 $ 956.64 Successor Outstanding, July 22, 2023 (converted) 3,515,219 $ 10.00 Options granted — — Options forfeited — — Outstanding, December 31, 2023 3,515,219 10.00 Exercisable, December 31, 2023 — $ —
Schedule of assumptions used in estimating the fair value of stock options	December 31, 2023 2022 Expected volatility 57% 47% – 61% Risk-free interest rate 4.1% – 4.4% 1.87% – 3.92% Expected life (in years) 3.00-6.25 5.75 – 6.25 Expected dividend yield — —
Summary of restricted stock units activity	Weighted Average Number of Grant Date Shares Fair Value Successor Outstanding, July 22, 2023 — $ — Granted 1,169,366 10.84 Vested (127,801) 10.84 Forfeited (28,571) 10.84 Outstanding, December 31, 2023 1,012,994 $ 10.84

Organization (Details)

Organization (Details) - USD ($) $ / shares in Units, $ in Thousands	Dec. 31, 2023	Jul. 21, 2023	Jan. 06, 2023	Dec. 31, 2022
Organization
Shares Outstanding				21,257,708
Common stock, par value	$ 0.0001			$ 0.0001
Cash	$ 5,158		$ 31,200	$ 9,746
Accumulated deficit	$ (473,602)			$ (474,839)
Priveterra
Organization
Cash			29,200
Intangible Assets Acquired
Organization
Cash			2,000
Intangible Assets Acquired \| Priveterra
Organization
Shares Outstanding		16,500,000
Common stock, par value		$ 0.0001
Cash			$ 2,001
Additional shares of common stock		16,000,000

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Segment Reporting (Details) - segment	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Summary of Significant Accounting Policies
Number of operating segments	1	1
Number of reportable segments	1	1

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Property and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Property and Equipment
Property and equipment	$ 502	$ 502
Accumulated depreciation	(170)	(71)
Property and equipment, net	$ 332	431
Furniture and fixtures
Property and Equipment
Useful life (in years)	7 years
Property and equipment	$ 199	199
Equipment
Property and Equipment
Useful life (in years)	5 years
Property and equipment	$ 237	237
Leasehold improvements
Property and Equipment
Property and equipment	$ 66	$ 66

Summary of Significant Accoun_6

Summary of Significant Accounting Policies - Other Accrued Expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Summary of Significant Accounting Policies
Legal expenses	$ 1,867
Excise tax liability	569
Operating lease liability - short term portion	$ 278	$ 257
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Total other accrued expenses	Total other accrued expenses
Daewoong vial usage	$ 33	$ 202
Remaining other accrued expenses	843	281
Total other accrued expenses	$ 3,590	$ 740

Summary of Significant Accoun_7

Summary of Significant Accounting Policies - Convertible Preferred Stock (Details) - shares	Jul. 21, 2023	Dec. 12, 2022
Summary of Significant Accounting Policies
Number of shares to be received prior to merger	2.328
Old Aeon
Summary of Significant Accounting Policies
Number of shares to be received prior to merger		2.328

Summary of Significant Accoun_8

Summary of Significant Accounting Policies - Net Loss Per Share Attributable to Common Stockholders (Details) - USD ($) $ / shares in Units, $ in Thousands	5 Months Ended	7 Months Ended	12 Months Ended
	Dec. 31, 2023	Jul. 21, 2023	Dec. 31, 2022
Summary of Significant Accounting Policies
Net income (loss) available to common stockholders, basic	$ 24,046	$ (60,678)	$ (52,556)
Net income (loss) available to common stockholders, diluted	$ 24,046	$ (60,678)	$ (52,556)
Weighted average shares of common stock outstanding, basic	37,159,600	138,848,177	138,848,177
Weighted average shares of common stock outstanding, diluted	37,159,600	138,848,177	138,848,177
Net income (loss) share attributable to common stockholders, basic	$ 0.65	$ (0.44)	$ (0.38)
Net income (loss) share attributable to common stockholders, diluted	$ 0.65	$ (0.44)	$ (0.38)

Summary of Significant Accoun_9

Summary of Significant Accounting Policies - Potentially Dilutive Securities Outstanding (Details) - shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Potentially dilutive securities outstanding have been excluded from the computation of diluted weighted average shares outstanding because such securities have an anti-dilutive impact
Potentially dilutive securities outstanding have been excluded from the computation of diluted weighted average shares outstanding because such securities have an anti-dilutive impact	38,818,536	31,294,609
Warrants
Potentially dilutive securities outstanding have been excluded from the computation of diluted weighted average shares outstanding because such securities have an anti-dilutive impact
Potentially dilutive securities outstanding have been excluded from the computation of diluted weighted average shares outstanding because such securities have an anti-dilutive impact	14,479,999
Contingent consideration
Potentially dilutive securities outstanding have been excluded from the computation of diluted weighted average shares outstanding because such securities have an anti-dilutive impact
Potentially dilutive securities outstanding have been excluded from the computation of diluted weighted average shares outstanding because such securities have an anti-dilutive impact	16,000,000
Contingent founder shares
Potentially dilutive securities outstanding have been excluded from the computation of diluted weighted average shares outstanding because such securities have an anti-dilutive impact
Potentially dilutive securities outstanding have been excluded from the computation of diluted weighted average shares outstanding because such securities have an anti-dilutive impact	3,450,000
Convertible preferred stock outstanding
Potentially dilutive securities outstanding have been excluded from the computation of diluted weighted average shares outstanding because such securities have an anti-dilutive impact
Potentially dilutive securities outstanding have been excluded from the computation of diluted weighted average shares outstanding because such securities have an anti-dilutive impact		21,257,708
Convertible preferred stock warrants outstanding
Potentially dilutive securities outstanding have been excluded from the computation of diluted weighted average shares outstanding because such securities have an anti-dilutive impact
Potentially dilutive securities outstanding have been excluded from the computation of diluted weighted average shares outstanding because such securities have an anti-dilutive impact		342,011
Common stock options and restricted stock units
Potentially dilutive securities outstanding have been excluded from the computation of diluted weighted average shares outstanding because such securities have an anti-dilutive impact
Potentially dilutive securities outstanding have been excluded from the computation of diluted weighted average shares outstanding because such securities have an anti-dilutive impact	4,888,537	9,694,890

Forward Merger - Narratives (De

Forward Merger - Narratives (Details) - USD ($) $ / shares in Units, $ in Thousands					6 Months Ended
	Jul. 21, 2023	Apr. 27, 2023	Jan. 06, 2023	Feb. 08, 2021	Jun. 30, 2023	Dec. 31, 2023	Jun. 08, 2023	Dec. 31, 2022	Dec. 12, 2022
Summary of Significant Accounting Policies
Number of shares to be received prior to merger	2.328
Common stock, par value						$ 0.0001		$ 0.0001
Common stock, shares outstanding						37,159,600		138,825,356
Number of common stock issued on conversion	1
Founder Shares
Summary of Significant Accounting Policies
Common stock, par value	$ 0.0001
Common stock, shares outstanding	6,900,000
Number of common stock issued on conversion	1
Number of founder shares subject to vesting and forfeiture conditions.	3,450,000	3,450,000
Value of shares				$ 0
Percentage of shares subject to vesting and forfeiture conditions	50%
Remaining shares without vesting conditions	3,450,000
Grante date fair value of remaining shares without vesting conditions expensed	$ 31,400
Founder Shares \| Sponsor
Summary of Significant Accounting Policies
Shares purchased				6,900,000
Value of shares				$ 69,000
Proceeds from IPO				$ 25,000
Share price				$ 0.004
Committed Financing Arrangements \| Class A member
Summary of Significant Accounting Policies
Number of shares issued upon conversion					3,571,429
Conversion price of convertible debt					$ 7
Priveterra \| Additional Committed Financing Agreement with A1 \| Class A member
Summary of Significant Accounting Policies
Number of shares issued upon conversion					2,226,182
Intangible Assets Acquired
Summary of Significant Accounting Policies
Number of shares to be received prior to merger									2.328
Intangible Assets Acquired \| Additional Committed Financing Agreement with A1
Summary of Significant Accounting Policies
Number of shares issued upon conversion					3,571,429
Conversion price of convertible debt					$ 7
Intangible Assets Acquired \| Committed Financing Arrangements
Summary of Significant Accounting Policies
Conversion price of convertible debt					$ 7
Intangible Assets Acquired \| Priveterra
Summary of Significant Accounting Policies
Common stock, par value	$ 0.0001
Number of shares issued upon conversion			2,226,182
Fair value of contingent consideration		$ 125,700	$ 125,699
Fair value of the replacement awards	$ 13,300	13,300	$ 13,331
Voting interest acquired (as a percent)			100%
Share price			$ 10.84
Intangible Assets Acquired \| Priveterra \| Employee Stock Option
Summary of Significant Accounting Policies
Fair value of the replacement awards		11,500
Intangible Assets Acquired \| Priveterra \| RSU
Summary of Significant Accounting Policies
Fair value of the replacement awards		$ 1,800
Intangible Assets Acquired \| Priveterra \| Additional Committed Financing Agreement with A1
Summary of Significant Accounting Policies
Aggregate principal amount							$ 20,000
Notes issued					$ 14,000
Shares issued for Committed Financing (in shares)					2,226,182
Proceeds from issuance of convertible notes					$ 25,000
Intangible Assets Acquired \| Priveterra \| A1 and Daewoong
Summary of Significant Accounting Policies
Aggregate principal amount			$ 15,000
Intangible Assets Acquired \| Priveterra \| Priveterra and Old AEON
Summary of Significant Accounting Policies
Aggregate principal amount			5,000
Intangible Assets Acquired \| Operating expenses
Summary of Significant Accounting Policies
Acquired in-process research and development			$ 348,000
Discount rate used in determining the value of the acquired IPR&D			25%
Implied internal rate used in determining the value of the acquired IPR&D			24.80%
Long-term growth rate used in determining the value of the acquired IPR&D			4%

Forward Merger - Summary of the

Forward Merger - Summary of the purchase price calculation (Details) - USD ($) $ / shares in Units, $ in Thousands	Jul. 21, 2023	Apr. 27, 2023	Jan. 06, 2023	Dec. 31, 2023	Dec. 31, 2022
Summary of Significant Accounting Policies
Assumed liabilities				$ 159,889	$ 143,242
Intangible Assets Acquired \| Priveterra
Summary of Significant Accounting Policies
Number of shares issued as consideration in the Merger			16,500,000
Number of shares issued upon conversion			2,226,182
Total number of shares of common stock of the combined company			18,726,182
Multiplied by the Priveterra share price, as of the close of the Merger			$ 10.84
Total			$ 202,992
Fair value of contingent consideration		$ 125,700	125,699
Replacement of share-based payment awards	$ 13,300	$ 13,300	13,331
Assumed liabilities			125
Total purchase price			$ 342,147

Forward Merger - Allocation of

Forward Merger - Allocation of the purchase price (Details) - USD ($) $ in Thousands	Jan. 06, 2023	Dec. 31, 2023	Dec. 31, 2022
Summary of Significant Accounting Policies
Cash	$ 31,200	$ 5,158	$ 9,746
Priveterra
Summary of Significant Accounting Policies
Cash	29,200
Intangible Assets Acquired
Summary of Significant Accounting Policies
Cash	2,000
Intangible Assets Acquired \| Priveterra
Summary of Significant Accounting Policies
Cash	2,001
Net working capital (excluding cash)	(16,182)
Other assets and liabilities	775
Acquired in-process research and development	348,000
Net assets acquired	334,594
Loss on consolidation of VIE	7,553
Total purchase price	$ 342,147

Forward Merger - Number of shar

Forward Merger - Number of shares of common stock issued and amounts recorded to arrive at the opening consolidated balance sheet of the Successor (Details) - USD ($) $ in Thousands		6 Months Ended
	Jul. 21, 2023	Jun. 30, 2023
Number of shares of common stock issued and amounts recorded to arrive at the opening consolidated balance sheet of the Successor
Balance at the beginning		$ (287,500)
Balance at the beginning (in shares)		138,825,356
Common Stock \| Intangible Assets Acquired
Number of shares of common stock issued and amounts recorded to arrive at the opening consolidated balance sheet of the Successor
Balance at the beginning (in shares)	557,160
Shares issued in connection with the Merger	$ 2
Shares issued in connection with the Merger (in shares)	16,500,000
Merger Consideration - Shares issued for Interim Convertible Notes related to Committed Financing (in shares)	2,226,182
Stock-compensation for Class B Founder Shares into common shares	$ 1
Stock-compensation for Class B Founder Shares into common shares (in shares)	6,900,000
Shares issued in Forward Purchase Agreements	$ 1
Shares issued in Forward Purchase Agreements (in shares)	6,275,000
Shares issued in New Money PIPE Subscription Agreements (in shares)	1,001,000
Shares issued for Committed Financing (in shares)	3,571,429
Other miscellaneous (in shares)	128,829
Balance at the ending	$ 4
Balance at the ending (in shares)	37,159,600
Subscription Receivables \| Intangible Assets Acquired
Number of shares of common stock issued and amounts recorded to arrive at the opening consolidated balance sheet of the Successor
Shares issued in Forward Purchase Agreements	$ (60,710)
Balance at the ending	(60,710)
Additional Paid-in Capital \| Intangible Assets Acquired
Number of shares of common stock issued and amounts recorded to arrive at the opening consolidated balance sheet of the Successor
Balance at the beginning	5,937
Shares issued in connection with the Merger	192,189
Merger Consideration - Shares issued for Interim Convertible Notes related to Committed Financing	24,132
Stock-compensation for Class B Founder Shares into common shares	68,972
Shares issued in Forward Purchase Agreements	66,714
Shares issued in New Money PIPE Subscription Agreements	10,844
Shares issued for Committed Financing	38,714
Founder contingent shares	(31,401)
Other miscellaneous	1,397
Balance at the ending	377,498
Accumulated Deficit \| Intangible Assets Acquired
Number of shares of common stock issued and amounts recorded to arrive at the opening consolidated balance sheet of the Successor
Balance at the beginning	(12,897)
Stock-compensation for Class B Founder Shares into common shares	(68,972)
Shares issued in Forward Purchase Agreements	(38,255)
Issuance of Make-Whole derivative	(427)
Shares issued in New Money PIPE Subscription Agreements	(6,433)
Shares issued for Committed Financing	(13,714)
Acquired IPR&D and Loss on consolidation of VIE	(355,553)
Other miscellaneous	(1,397)
Balance at the ending	$ (497,648)

Related Party Transactions (P_2

Related Party Transactions (Predecessor) - 2019 Debt Financings (Details) $ in Thousands					1 Months Ended	7 Months Ended	12 Months Ended
	Dec. 18, 2022 USD ($)	Dec. 12, 2022 USD ($)	Nov. 01, 2022 USD ($)	Jun. 19, 2022 USD ($)	Dec. 31, 2019 USD ($) item	Jul. 21, 2023 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Jul. 22, 2022 USD ($)	Jun. 30, 2019 USD ($)
Related Party Transactions
Debt extinguishment due to warrant modification						$ 17,036
Estimated fair value of convertible notes								$ 131,300
Convertible Notes 2019
Related Party Transactions
Percentage of repayment of principal amount					175%
Percentage of the shares the holders would have been entitled to receive via the previous warrant agreement							85%
Percentage of Convertible Notes automatically convert into number of shares of Company's common stock, of principal amount					175%
Income (expense) related to decrease (increase) in fair value						1,600		1,700
Increase in additional paid in capital from debt extinguishment due to warrant modification						17,000
Principal amount outstanding								6,000
Estimated fair value of convertible notes								$ 16,200
Additional promissory note
Related Party Transactions
Principal amount					$ 5,000					$ 5,000
Number of additional convertible promissory notes sold \| item					5
Additional promissory note \| Board of directors \| Convertible Notes 2019
Related Party Transactions
Principal amount					$ 1,000
Number of additional convertible promissory notes sold \| item					1
Convertible notes
Related Party Transactions
Principal amount									$ 1,000
Interest rate (as a percent)								10%	0%
Convertible notes \| Simhambhatla
Related Party Transactions
Principal amount									$ 1,000
Repayable amount		$ 1,700	$ 1,000
Percentage of repayment of principal amount		175%
Principal amount outstanding		$ 700	700						700
Additional amount repayable to the principal amount	$ 700		700
Repayment of notes			$ 1,000
Convertible notes \| Jaywin
Related Party Transactions
Principal amount									1,000
Repayable amount		$ 1,700
Percentage of repayment of principal amount		175%	175%
Principal amount outstanding		$ 700							700
Additional amount repayable to the principal amount		700
Repayment of notes		1,000
Convertible notes \| Willis
Related Party Transactions
Principal amount									1,000
Repayable amount		$ 1,700
Percentage of repayment of principal amount		175%
Principal amount outstanding		$ 700							700
Additional amount repayable to the principal amount		700
Repayment of notes		1,000
Convertible notes \| Malik
Related Party Transactions
Principal amount									1,000
Repayable amount	$ 1,700	$ 1,700
Percentage of repayment of principal amount	175%
Principal amount outstanding	$ 700								700
Additional amount repayable to the principal amount	700
Repayment of notes	$ 1,000
Convertible Notes 2019
Related Party Transactions
Debt extinguishment due to warrant modification						5,200
Additional Paid-in Capital [Member]
Related Party Transactions
Debt extinguishment due to warrant modification						17,036
Additional Paid-in Capital [Member] \| Convertible Notes 2019
Related Party Transactions
Debt extinguishment due to warrant modification						$ 17,000
Dental Innovations \| Additional promissory note \| Convertible Notes 2019
Related Party Transactions
Percentage of repayment of principal amount	175%
Dental Innovations \| Original 2019 Note Purchase Agreement
Related Party Transactions
Principal amount									5,000	5,000
Repayable amount				$ 8,700					$ 8,700	8,750
Percentage of repayment of principal amount				175%
Additional amount repayable to the principal amount				$ 3,700
Interest rate (as a percent)				0%					15.79%
Dental Innovations \| Original 2019 Note Purchase Agreement \| Additional promissory note
Related Party Transactions
Principal amount					$ 5,000					$ 5,000
Dental Innovations \| Original 2019 Note Purchase Agreement \| Convertible notes
Related Party Transactions
Principal amount of convertible promissory note					5,000
Strathspey Crown Holdings Group, LLC ("SCH") \| Additional promissory note \| Convertible Notes 2019
Related Party Transactions
Principal amount	$ 1,700				$ 1,000		$ 1,700		$ 1,000
Number of additional convertible promissory notes sold \| item					1
Interest rate (as a percent)	0%						15.79%

Related Party Transactions (P_3

Related Party Transactions (Predecessor) - SCH Convertible Note (Details) - USD ($) $ in Thousands		7 Months Ended	12 Months Ended
	Jan. 02, 2020	Jul. 21, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2020
Related Party Transactions
Estimated fair value of convertible notes				$ 131,300
Debt extinguishment due to warrant modification		$ 17,036
Additional Paid-in Capital [Member]
Related Party Transactions
Debt extinguishment due to warrant modification		17,036
Strathspey Crown Holdings Group, LLC ("SCH") \| SCH Convertible Note
Related Party Transactions
Amount Attributable to Contingent Warrants Due To Warrant Modification		11,800
SCH Convertible Note \| Strathspey Crown Holdings Group, LLC ("SCH")
Related Party Transactions
Increase in additional paid in capital from debt extinguishment due to warrant modification		17,000
Debt extinguishment due to warrant modification		17,000
Income (expense) related to decrease (increase) in fair value		$ 4,200		2,100
SCH Convertible Note \| Strathspey Crown Holdings Group, LLC ("SCH")
Related Party Transactions
Estimated fair value of convertible notes				25,100
Percentage of the shares the holders would have been entitled to receive via the previous warrant agreement			85%
Outstanding amount				17,500
Percentage of repayment of principal amount	175%
Percentage of Convertible Notes automatically convert into number of shares of Company's common stock, of principal amount	175%
Strathspey Crown note 2020 \| Strathspey Crown Holdings Group, LLC ("SCH")
Related Party Transactions
Aggregate principal amount	$ 17,500
Outstanding amount				$ 30,600	$ 30,600
Interest rate (as a percent)	0%			15.79%

Related Party Transactions (P_4

Related Party Transactions (Predecessor) - A1 Convertible Notes (Details) $ in Millions

1 Months Ended

9 Months Ended

12 Months Ended

Dec. 15, 2021 USD ($) item

Dec. 08, 2021 USD ($) item

Jul. 21, 2023 USD ($)

Dec. 31, 2021 USD ($)

Sep. 30, 2023 USD ($)

Dec. 31, 2022 USD ($) item

Mar. 06, 2023 USD ($)

Jul. 01, 2022 USD ($)

Jun. 03, 2022 USD ($)

Apr. 14, 2022 USD ($)

Mar. 09, 2022 USD ($)

Feb. 18, 2022 USD ($)

Related Party Transactions

Estimated fair value of convertible notes

$ 131.3

Alphaeon 1 LLC (A1) | 2023 A1 Convertible Notes

Related Party Transactions

Aggregate principal amount

$ 6

Alphaeon 1 LLC (A1) | A1 Purchase Agreement

Related Party Transactions

Aggregate principal amount

$ 25

Alphaeon 1 LLC (A1) | A1 Purchase Agreement | 2021 A1 Convertible Notes

Related Party Transactions

Aggregate principal amount

$ 10

Percentage of discount rate if number of days between execution date and conversion date are between zero and 90

10%

Percentage of discount rate if number of days between execution date and conversion date are between 91 and 180

15%

Percentage of discount rate if number of days between execution date and conversion date is grated than 180 days

20%

Income (expense) related to change in fair value

$ (3)

0.6

Principal amount outstanding

Estimated fair value of convertible notes

8.7

Alphaeon 1 LLC (A1) | A1 Purchase Agreement | A1 Convertible Notes issued on December 8, 2021

Related Party Transactions

Aggregate principal amount

$ 5

Number of convertible notes issued | item

Alphaeon 1 LLC (A1) | A1 Purchase Agreement | A1 Convertible Notes issued on December 15, 2021

Related Party Transactions

Aggregate principal amount

$ 5

Alphaeon 1 LLC (A1) | A1 Purchase Agreement | 2022 A1 Convertible Notes

Related Party Transactions

Aggregate principal amount

14.5

Interest rate (as a percent)

10%

Income (expense) related to change in fair value

$ 4.2

Principal amount outstanding

14.5

Estimated fair value of convertible notes

$ 12.2

Number of additional tranches of subordinated convertible promissory notes issued | item

Alphaeon 1 LLC (A1) | A1 Purchase Agreement | A1 Convertible Notes, Issued on February 18, 2022

Related Party Transactions

Aggregate principal amount

$ 3

Alphaeon 1 LLC (A1) | A1 Purchase Agreement | A1 Convertible Notes, Issued on 9th March, 2022

Related Party Transactions

Aggregate principal amount

$ 3

Alphaeon 1 LLC (A1) | A1 Purchase Agreement | A1 Convertible Notes, Issued on April 14, 2022

Related Party Transactions

Aggregate principal amount

$ 3

Alphaeon 1 LLC (A1) | A1 Purchase Agreement | A1 Convertible Notes, Issued on June 3, 2022

Related Party Transactions

Aggregate principal amount

$ 3

Alphaeon 1 LLC (A1) | A1 Purchase Agreement | A1 Convertible Notes, Issued on July 1, 2022

Related Party Transactions

Aggregate principal amount

$ 2.5

Alphaeon 1 LLC (A1) | A1 Purchase Agreement | 2023 A1 Convertible Notes

Related Party Transactions

Interest rate (as a percent)

15.79%

Alphaeon 1 LLC (A1) | A1 Purchase Agreement | March 2023 A1 Convertible Notes

Related Party Transactions

Income (expense) related to change in fair value

$ 10.1

Daewoong Convertible Notes (P_2

Daewoong Convertible Notes (Predecessor) (Details) $ in Thousands		1 Months Ended		7 Months Ended	12 Months Ended
	Jul. 29, 2022 USD ($)	May 31, 2021 USD ($) item	Aug. 31, 2020 USD ($) item	Jul. 21, 2023 USD ($)	Dec. 31, 2022 USD ($)	Jul. 22, 2022 USD ($)	Sep. 18, 2020 USD ($)	Aug. 27, 2020 USD ($)
Daewoong Convertible Notes
Proceeds from issuance of convertible notes				$ 14,000	$ 44,500
Subordinated convertible promissory notes
Daewoong Convertible Notes
Aggregate principal amount						$ 1,000
Interest rate (as a percent)					10%	0%
Subordinated convertible promissory notes \| Daewoong
Daewoong Convertible Notes
Principal amount outstanding					$ 60,000
Estimated fair value					53,500
Subordinated convertible promissory notes \| Daewoong \| Convertible promissory note purchase agreement
Daewoong Convertible Notes
Number of promissory notes \| item		2	2
Aggregate principal amount			$ 25,000
Interest rate (as a percent)	15.79%		3%
Amount of denominator used to calculate number of shares issued upon conversion of debt instrument			$ 25,000
Percentage multiplied calculated on outstanding common stock used in number of shares issued upon conversion of debt instrument			9.99%
Aggregate value of shares immediately prior to IPO			$ 20,000
Minimum percentage of ownership interest pre-IPO after conversion of debt instrument			15%
Minimum pre-money valuation of the Company			$ 200,000
Threshold business days for pre-money valuation after conversion of notes			5 days
Proceeds from issuance of convertible notes	$ 30,000
Income (expense) related to decrease (increase) in fair value				$ 3,700	$ (2,200)
Subordinated convertible promissory notes \| Daewoong \| Amended convertible promissory note purchase agreement
Daewoong Convertible Notes
Aggregate principal amount		$ 5,000
Amount of denominator used to calculate number of shares issued upon conversion of debt instrument		$ 30,000
Percentage multiplied calculated on outstanding common stock used in number of shares issued upon conversion of debt instrument		11.99%
Aggregate value of shares immediately prior to IPO		$ 24,000
Minimum percentage of ownership interest pre-IPO after conversion of debt instrument		18%
Convertible Notes issued on August 27, 2020 \| Daewoong \| Convertible promissory note purchase agreement
Daewoong Convertible Notes
Aggregate principal amount								$ 10,000
Convertible Notes issued on September 18, 2020 \| Daewoong \| Convertible promissory note purchase agreement
Daewoong Convertible Notes
Aggregate principal amount							$ 15,000
Percentage multiplied calculated on outstanding common stock used in number of shares issued upon conversion of debt instrument			9.99%

Fair Value Measurements - Conve

Fair Value Measurements - Convertible Notes at Fair Value (Details) $ in Millions	7 Months Ended	12 Months Ended
	Jul. 21, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2023
Fair Value Measurements
Increase decrease in fair value of convertible notes	$ 19.4	$ 4.4
Principal amount outstanding under the convertible notes		111
Estimated fair value of convertible notes		$ 131.3
Convertible notes, measurement input, extensible enumeration			Discount rate
Minimum \| Discount rate \| Predecessor period, July 1, 2023, to July 21, 2023
Fair Value Measurements
Convertible notes, measurement input	0.15
Minimum \| Discount rate \| Predecessor period, January 1, 2023, to July 21, 2023
Fair Value Measurements
Convertible notes, measurement input	0.15
Maximum \| Discount rate \| Predecessor period, July 1, 2023, to July 21, 2023
Fair Value Measurements
Convertible notes, measurement input	0.40
Maximum \| Discount rate \| Predecessor period, January 1, 2023, to July 21, 2023
Fair Value Measurements
Convertible notes, measurement input	0.45

Fair Value Measurements - Prefe

Fair Value Measurements - Preferred Stock Warrant Liability (Details) - USD ($) $ / shares in Units, $ in Thousands	Dec. 31, 2023	Dec. 31, 2016
Fair Value Measurements
Warrants to purchase shares of convertible preferred stock		342,011
Exercise price		$ 7.3097
Warrants liability at fair value	$ 1,447	$ 800

Fair Value Measurements - Forwa

Fair Value Measurements - Forward Purchase Agreements (Details) $ / shares in Units, $ in Thousands				5 Months Ended	7 Months Ended
	Jul. 21, 2023 USD ($) $ / shares shares	Jun. 29, 2023 USD ($) D $ / shares shares	Apr. 27, 2023 shares	Dec. 31, 2023 USD ($)	Jul. 21, 2023 USD ($)
Fair Value Measurements
Number of additional shares to be issued \| shares			16,000,000
Forward purchase agreement liability				$ 41,043
Loss on issuance of financing arrangements related to the forward purchase agreement derivative contract				$ (8,400)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]				Fair Value Adjustment of Warrants
Change in fair value of embedded forward purchase agreements and derivative liabilities				$ 8,366	$ 11,789
Forward Purchase Agreements
Fair Value Measurements
Derivative Liability, Notional Amount	$ 32,300				32,300
Initial value of derivative	32,300				32,300
Loss on issuance	6,000
Forward Purchase Agreements \| Priveterra
Fair Value Measurements
Present value of prepayment amount	$ 60,700				60,700
Loss on issuance of financing arrangements				$ 6,000
Maximum number of shares of common stock to be issued on the cash settlement payment date \| shares	7,500,000
Price per share on the cash settlement payment date \| $ / shares	$ 2
Forward Purchase Agreements \| Priveterra \| Common Class A [Member]
Fair Value Measurements
Number of shares to be issued \| shares		7,500,000
Maximum allowed seller's ownership (as a percent)		9.90%
Prepayment amount to be paid to seller	$ 66,700	$ 66,700			$ 66,700
Number of additional shares to be issued \| shares		6,275,000
Redemption price per share \| $ / shares		$ 10.63
Period after which reset price becomes subject to monthly resets		90 days
Volume weighted average period		30 days
Period after closing date of business combination agreement		2 years
Period after delivery of written notice		90 days
Consecutive trading days \| D		30
Reset price floor \| $ / shares		$ 7
Threshold share price \| $ / shares		$ 10

Fair Value Measurements - Signi

Fair Value Measurements - Significant inputs as of the valuation dates (Details) - Forward Purchase Agreements	Dec. 31, 2023 Y $ / shares	Jul. 21, 2023 $ / shares Y
Stock Price
Fair Value Measurements
Forward purchase agreements, measurement input \| $ / shares	7.20	10.84
Expected volatility
Fair Value Measurements
Forward purchase agreements, measurement input	0.5200	0.5500
Risk-free interest rate
Fair Value Measurements
Forward purchase agreements, measurement input	0.0448	0.0482
Expected life (in years)
Fair Value Measurements
Forward purchase agreements, measurement input \| Y	1.56	2

Fair Value Measurements - New M

Fair Value Measurements - New Money PIPE Subscription Agreements and Letter Agreements, Warrants (Details) $ / shares in Units, $ in Thousands		5 Months Ended	7 Months Ended	12 Months Ended
	Jun. 29, 2023 USD ($) $ / shares shares	Dec. 31, 2023 USD ($) $ / shares shares	Jul. 21, 2023 USD ($)	Dec. 31, 2023 USD ($) D $ / shares shares	Dec. 31, 2016 USD ($) $ / shares
Fair Value Measurements
Loss on issuance of forward purchase agreement derivative contract		$ (8,400)
Embedded forward purchase agreements and derivative liabilities		41,043		$ 41,043
Change in fair value of embedded forward purchase agreements and derivative liabilities		(8,366)	$ (11,789)
Exercise price per warrant \| $ / shares					$ 7.3097
Warrants liability at fair value		1,447		$ 1,447	$ 800
Change in fair value of warrants		$ (2,318)
Warrants Exercised on Cashless Basis [Member] \| Maximum
Fair Value Measurements
Number of common stock per warrant \| shares		0.361		0.361
Priveterra
Fair Value Measurements
Number of warrants issued \| shares		14,479,999
Warrants liability at fair value		$ 1,400		$ 1,400
Change in fair value of warrants		$ 2,300
Public warrants
Fair Value Measurements
Number of common stock per warrant \| shares		1		1
Exercise price per warrant \| $ / shares		$ 11.50		$ 11.50
Warrants exercisable term				30 days
Warrants expiration term		5 years		5 years
Redemption price per warrant \| $ / shares				$ 0.01
Redemption period				30 days
Public warrants \| if the closing price of the Company's common stock equals or exceeds $18.00 per share
Fair Value Measurements
Share price \| $ / shares		$ 18		$ 18
Threshold trading days for redemption of warrants \| D				20
Threshold consecutive trading days for redemption of warrants \| D				30
Number of business days before the entity send notice of redemption, considered for trading period term \| D				3
Public warrants \| if the closing price of the Company's common stock equals or exceeds $10.00 per share
Fair Value Measurements
Redemption price per warrant \| $ / shares				$ 0.10
Redemption period				30 days
Share price \| $ / shares		$ 10		$ 10
Threshold trading days for redemption of warrants \| D				20
Threshold consecutive trading days for redemption of warrants \| D				30
Number of business days before the entity send notice of redemption, considered for trading period term \| D				3
Public warrants \| Priveterra
Fair Value Measurements
Number of warrants issued \| shares		9,200,000
Private placement warrants \| Priveterra
Fair Value Measurements
Number of warrants issued \| shares		5,279,999
New Money PIPE Subscription Agreements \| ACM Investor
Fair Value Measurements
Amount Obligated to Pay to Entity	$ 3,500
Obligated to pay	$ 3,500
New Money PIPE Subscription Agreements \| Common Class A [Member]
Fair Value Measurements
Number of shares purchased by seller from third-parties through a broker in the open market \| shares	236,236
Number of shares purchased by seller from third-parties through a broker in the open market \| shares	236,236
New Money PIPE Subscription Agreements \| Priveterra \| ACM Investor
Fair Value Measurements
Proceeds from Issuance of Common Stock	$ 900
New Money PIPE Subscription Agreements \| Priveterra \| Polar [Member]
Fair Value Measurements
Proceeds from Issuance of Common Stock	$ 3,500
New Money PIPE Subscription Agreements \| Priveterra \| Common Class A [Member]
Fair Value Measurements
Stock Issued During Period, Shares, New Issues \| shares	1,001,000
Proceeds from Issuance of Common Stock	$ 7,000
Loss on issuance of common stock shares	$ 6,400
Share price \| $ / shares	$ 7
Letter Agreement \| Sponsor
Fair Value Measurements
Loss on issuance of forward purchase agreement derivative contract	$ (400)
Number of shares to be transferred by sponsor \| shares	400,000
Threshold business days for transfer of shares	15 days
Threshold consecutive trading days ending on the trading day immediately prior to the Measurement Date	5 days
Embedded forward purchase agreements and derivative liabilities		$ 700		$ 700
Change in fair value of embedded forward purchase agreements and derivative liabilities		$ 300
Share price \| $ / shares	$ 7

Fair Value Measurements - Conti

Fair Value Measurements - Contingent Consideration and Contingent Founder Shares (Successor) (Details) - USD ($) $ in Thousands			5 Months Ended
	Jul. 21, 2023	Apr. 27, 2023	Dec. 31, 2023
Class of Stock [Line Items]
Number Of Additional Shares To Be Issued		16,000,000
Threshold increase in Episodic Migraine Contingent Consideration Shares		11,000,000
Number of Chronic Migraine Contingent Consideration Shares by increase in Episodic Migraine Contingent Consideration Shares		0
Number of Contingent Consideration Shares to be issued upon Threshold Increase in Episodic Migraine Contingent Consideration Shares		0
Reduction in number of Chronic Migraine Contingent Consideration Shares		1,000,000
Minimum number of Chronic Migraine Contingent Consideration Shares after Reduction		0
Contingent consideration liability			$ 104,350
Income related to the change in fair value of contingent consideration			(52,750)
Maximum
Class of Stock [Line Items]
Number Of Additional Shares To Be Issued		16,000,000
Reduction in Episodic Migraine Contingent Consideration Shares		1,000,000
Successor [Member]
Class of Stock [Line Items]
Contingent consideration liability			$ 104,400
Founder Shares
Class of Stock [Line Items]
Number of founder shares subject to vesting and forfeiture conditions.	3,450,000	3,450,000
Percentage of shares unvested and subject to the restrictions and forfeiture provisions		50%
Percentage of shares not subject to restrictions and forfeiture provisions		50%
Percentage of warrants not subject to restrictions and forfeiture provisions		100%
Migraine Phase 3 Contingent Founder Shares \| Upon the achievement of the conditions for the issuance of the Migraine Phase 3 Contingent Consideration Shares on or prior to the Migraine Phase 3 Outside Date
Class of Stock [Line Items]
Number Of Additional Shares To Be Issued		1,000,000
Number of founder shares subject to vesting and forfeiture conditions.		1,000,000
Migraine Phase 3 Contingent Founder Shares \| Upon the achievement of the conditions for the issuance of the CD BLA Contingent Consideration Shares on or prior to the CD BLA Outside Date
Class of Stock [Line Items]
Number of founder shares subject to vesting and forfeiture conditions.		1,000,000
Migraine Phase 3 Contingent Founder Shares \| Upon the earlier of (x) the achievement of the conditions for the issuance of the Episodic Migraine Contingent Consideration Shares on or before the Episodic Migraine Outside Date and (y) the achievement of the conditions for the issuance of the Chronic Migraine Contingent Consideration Shares on or before the Chronic Migraine Outside Date
Class of Stock [Line Items]
Number of founder shares subject to vesting and forfeiture conditions.		1,450,000
CD BLA Contingent Founder Shares
Class of Stock [Line Items]
Number Of Additional Shares To Be Issued		4,000,000
Episodic/Chronic Migraine Contingent Founder Shares
Class of Stock [Line Items]
Number Of Additional Shares To Be Issued		11,000,000
Number of common shares become due and payable		2,000,000
Episodic/Chronic Migraine Contingent Founder Shares \| Maximum
Class of Stock [Line Items]
Reduction in Episodic Migraine Contingent Consideration Shares		2,000,000
Episodic Migraine Contingent Consideration Shares
Class of Stock [Line Items]
Number Of Additional Shares To Be Issued		4,000,000
Chronic Migraine Contingent Consideration Shares
Class of Stock [Line Items]
Number Of Additional Shares To Be Issued		7,000,000

Fair Value Measurements - Medyt

Fair Value Measurements - Medytox Top-off Right (Details) - USD ($) $ / shares in Units, $ in Millions	May 05, 2022	May 02, 2022	Dec. 31, 2023	Dec. 31, 2022
Fair Value Measurements
Common stock, par value per share			$ 0.0001	$ 0.0001
Derivative, Loss, Statement of Income or Comprehensive Income [Extensible Enumeration]		Change in Fair Value of Forward Purchase Agreement and Derivative
Settlement Agreement with Medytox [Member]
Fair Value Measurements
Threshold target ownership percentage	10%
Loss due to change in fair value through the closing date of the merger	$ 11.8
Settlement Agreement with Medytox [Member] \| Old AEON Common Stock [Member]
Fair Value Measurements
Shares issued in New Money PIPE Subscription Agreements (in shares)	26,680,511
Common stock, par value per share	$ 0.0001

Fair Value Measurements - Commi

Fair Value Measurements - Committed Financing (Details) - USD ($) $ / shares in Units, $ in Millions		6 Months Ended
	Jan. 06, 2023	Jun. 30, 2023	Jun. 08, 2023
Priveterra \| Intangible Assets of Old Aeon Acquired [Member]
Fair Value Measurements
Number of shares issued upon conversion	2,226,182
Additional Committed Financing Agreement with A1 \| Intangible Assets of Old Aeon Acquired [Member]
Fair Value Measurements
Number of shares issued upon conversion		3,571,429
Conversion price of convertible debt		$ 7
Additional Committed Financing Agreement with A1 \| Priveterra \| Intangible Assets of Old Aeon Acquired [Member]
Fair Value Measurements
Aggregate principal amount			$ 20
Notes Issued		$ 14
Shares issued for Committed Financing (in shares)		2,226,182
Proceeds from issuance of convertible notes		$ 25
Additional Committed Financing Agreement with A1 \| Class A member \| Priveterra
Fair Value Measurements
Number of shares issued upon conversion		2,226,182
Committed Financing Arrangements \| Intangible Assets of Old Aeon Acquired [Member]
Fair Value Measurements
Conversion price of convertible debt		$ 7
Loss on issuance of common stock shares		$ 13.7
Committed Financing Arrangements \| Class A member
Fair Value Measurements
Number of shares issued upon conversion		3,571,429
Conversion price of convertible debt		$ 7
A1 and Daewoong \| Priveterra \| Intangible Assets of Old Aeon Acquired [Member]
Fair Value Measurements
Aggregate principal amount	$ 15
Priveterra and Old AEON \| Priveterra \| Intangible Assets of Old Aeon Acquired [Member]
Fair Value Measurements
Aggregate principal amount	$ 5

Fair Value Measurements - Compa

Fair Value Measurements - Company's recurring measurements for assets and liabilities at fair value (Details) - USD ($) $ in Thousands		5 Months Ended	7 Months Ended
	Jul. 22, 2023	Dec. 31, 2023	Jul. 21, 2023
Convertible notes
Recurring measurements for assets and liabilities at fair value
Balance at the beginning			$ 131,292
Issuance of convertible notes / Additions			14,000
Change in fair value			19,359
Conversion to common shares			$ (164,651)
Warrant Liabilities
Recurring measurements for assets and liabilities at fair value
Issuance of convertible notes / Additions	$ 3,765
Change in fair value		$ (2,318)
Balance at the end		1,447
Contingent consideration
Recurring measurements for assets and liabilities at fair value
Issuance of convertible notes / Additions	157,100
Change in fair value		(52,750)
Balance at the end		104,350
Forward Purchase Agreement and Make Whole Derivative
Recurring measurements for assets and liabilities at fair value
Issuance of convertible notes / Additions	$ 32,677
Change in fair value		8,366
Balance at the end		$ 41,043

Commitments and Contingencies -

Commitments and Contingencies - Supplemental balance sheet information related to the operating lease (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Commitments and Contingencies.
Term of operating leases			3 years
Minimum lease payments by fiscal year
2023	$ 292
Total future minimum lease payments	292
Less: Imputed interest	(14)
Present value of lease payments	278
Less: Current portion (included in other accrued expenses)	(278)	$ (257)
Noncurrent operating lease liability		242
Operating lease right-of-use asset	$ 262	$ 475
Remaining lease term in years	10 months 24 days
Discount rate	10%

Commitments and Contingencies_2

Commitments and Contingencies - Supplemental disclosures of operating cost and cash flow information related to operating leases (Details) - USD ($) $ in Thousands	5 Months Ended	7 Months Ended	12 Months Ended
	Dec. 31, 2023	Jul. 21, 2023	Dec. 31, 2022
Commitments and Contingencies.
Cost of operating leases	$ 122	$ 153	$ 279
Cash paid for operating leases	$ 129	$ 180	$ 248

Commitments and Contingencies_3

Commitments and Contingencies - Daewoong License and Supply Agreement (Details) - Daewoong License and Supply Agreement - USD ($) $ in Millions	Dec. 20, 2019	Dec. 31, 2022
Commitments and Contingencies
Automatic renewal for unlimited additional term	3 years
Termination upon a continuing default term	90 days
Termination upon a payment default term	30 days
Amount accrued		$ 0.2

Commitments and Contingencies_4

Commitments and Contingencies - Legal Proceedings (Details) $ in Thousands	Sep. 18, 2023 USD ($)
Commitments and Contingencies.
Deferred underwriting fee	$ 1,250

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Millions	5 Months Ended	7 Months Ended	12 Months Ended
Income Taxes (Details) - USD ($) $ in Millions	Dec. 31, 2023	Jul. 21, 2023	Dec. 31, 2022
Operating loss carryforward and credit carryforwards
Provision for income tax	$ 0	$ 0	$ 0
Federal
Operating loss carryforward and credit carryforwards
Net operating loss ("NOL") carryforwards	87.3		67.5
Federal \| Research and development
Operating loss carryforward and credit carryforwards
Credit carryforwards	6.1		3.9
State
Operating loss carryforward and credit carryforwards
Net operating loss ("NOL") carryforwards	116.2		67.4
State \| Research and development
Operating loss carryforward and credit carryforwards
Credit carryforwards	$ 4.4		$ 3

Income Taxes - components of de

Income Taxes - components of deferred tax assets and liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Deferred tax assets:
Accrued compensation	$ 271	$ 296
Accrued other expense		123
Stock compensation	1,647	5,303
Start-up costs and other intangibles	12,230	13,727
Lease liability	83	157
Net operating losses	28,613	20,131
Capitalized Research and Development Expenses	11,264	6,387
Other	23	32
Deferred tax assets, gross	54,131	46,156
Less: valuation allowance	(53,978)	(45,929)
Total deferred tax assets	153	227
Deferred tax liabilities:
Depreciation	(75)	(89)
ROU Asset	(78)	(138)
Total deferred tax liabilities	$ (153)	$ (227)

Income Taxes - reconciliation o

Income Taxes - reconciliation of the difference between the provision (benefit) for income taxes and income taxes at the statutory U.S. federal income tax rate (Details)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Reconciliation of the difference between the provision (benefit) for income taxes and income taxes at the statutory U.S. federal income tax rate
Income tax at statutory rate	21%	21%
Convertible notes	(11.10%)	(1.80%)
Contingent consideration	30.20%
Forward purchase agreements	(11.50%)
Warrants	1.30%
Stock compensation	(2.00%)	(0.50%)
Officers compensation	(5.50%)
Transaction costs	(7.90%)
Change in valuation allowance	(14.50%)	(18.70%)
Effective tax rate	0%	0%

Income Taxes - reconciliation_2

Income Taxes - reconciliation of unrecognized tax benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Reconciliation of unrecognized tax benefits
Balance, beginning of year	$ 11,061	$ 7,270
Increases due to current year tax positions	3,609	3,791
Balance, end of year	$ 14,670	$ 11,061

Income Taxes - narratives (Deta

Income Taxes - narratives (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Taxes
Unrecognized tax benefits	$ 14,670	$ 11,061	$ 7,270
Accrued interest associated with uncertain tax	0	0
Accrued penalties associated with uncertain tax	$ 0	$ 0

Convertible Preferred Stock (_3

Convertible Preferred Stock (Predecessor) (Details) - $ / shares	Dec. 31, 2023	Dec. 31, 2022
Convertible Preferred Stock (Predecessor)
Convertible preferred stock issuable in series, shares authorized		44,666,035
Convertible preferred stock issuable in series, par value	$ 0.0001	$ 0.0001

Convertible Preferred Stock (_4

Convertible Preferred Stock (Predecessor) - Tabular (Details) - USD ($) $ / shares in Units, $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Convertible Preferred Stock
Shares Authorized		44,666,035
Shares Issued		21,257,708
Shares Outstanding		21,257,708
Per Share Preference	$ 7.3097
Preferential Liquidation Value		$ 141,920
Carrying Value, Net of Issuance Costs		$ 137,949
Series A
Convertible Preferred Stock
Shares Authorized		7,393,333
Shares Issued		2,505,508
Shares Outstanding		2,505,508
Per Share Preference	5.4779	$ 5.4779
Preferential Liquidation Value		$ 13,725
Carrying Value, Net of Issuance Costs		$ 13,819
Series A-1
Convertible Preferred Stock
Shares Authorized		4,107,414
Per Share Preference		$ 5.4779
Series A-2
Convertible Preferred Stock
Shares Authorized		4,846,750
Shares Issued		4,846,750
Shares Outstanding		4,846,750
Per Share Preference		$ 5.4779
Preferential Liquidation Value		$ 26,550
Carrying Value, Net of Issuance Costs		$ 26,379
Series B
Convertible Preferred Stock
Shares Authorized		20,520,678
Shares Issued		6,244,395
Shares Outstanding		6,244,395
Per Share Preference	$ 7.3097	$ 7.3097
Preferential Liquidation Value		$ 45,645
Carrying Value, Net of Issuance Costs		$ 43,896
Series B-1
Convertible Preferred Stock
Shares Authorized		136,805
Per Share Preference		$ 7.3097
Series B-2
Convertible Preferred Stock
Shares Authorized		7,661,055
Shares Issued		7,661,055
Shares Outstanding		7,661,055
Per Share Preference		$ 7.3097
Preferential Liquidation Value		$ 56,000
Carrying Value, Net of Issuance Costs		$ 53,855

Convertible Preferred Stock (_5

Convertible Preferred Stock (Predecessor) - Voting Rights, Election of Directors (Details)	12 Months Ended
	Dec. 31, 2023 Vote director
Convertible Preferred Stock
Number of votes for each share of common stock into which preferred stock could be converted \| Vote	1
Series A
Convertible Preferred Stock
Number of director to be elected by preferred stock holders	1
Series A-2
Convertible Preferred Stock
Number of director to be elected by preferred stock holders	1
Series B
Convertible Preferred Stock
Number of director to be elected by preferred stock holders	1
Series B-2
Convertible Preferred Stock
Number of director to be elected by preferred stock holders	1

Convertible Preferred Stock (_6

Convertible Preferred Stock (Predecessor) - Dividends, Liquidation and Conversion (Details) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($) $ / shares	Dec. 31, 2022 $ / shares
Convertible Preferred Stock
Per Share Preference	$ 7.3097
Conversion rate	1
Minimum net proceeds from sale of common stock in an underwritten public offering for automatic conversion of convertible preferred stock \| $	$ 50
Minimum percentage of voting for automatic conversion of convertible preferred stock	0.66%
Public offering price per share as percentage of then effective per share	71.4286%
Series A
Convertible Preferred Stock
Dividend rate	$ 0.4382
Per Share Preference	5.4779	$ 5.4779
Original issue price	5.4779
Series A-1
Convertible Preferred Stock
Dividend rate	0.4382
Per Share Preference		5.4779
Series A-2
Convertible Preferred Stock
Dividend rate	0.4382
Per Share Preference		5.4779
Series B
Convertible Preferred Stock
Dividend rate	0.5847768
Per Share Preference	7.3097	7.3097
Minimum sale price of common stock in an underwritten public offering for automatic conversion of convertible preferred stock	7.3097
Original issue price	7.3097
Series B-1
Convertible Preferred Stock
Dividend rate	0.5847768
Per Share Preference		7.3097
Series B-2
Convertible Preferred Stock
Dividend rate	$ 0.5847768
Per Share Preference		$ 7.3097

Convertible Preferred Stock (_7

Convertible Preferred Stock (Predecessor) - Convertible Preferred Stock Warrants (Details)	Dec. 31, 2016 $ / shares shares
Convertible Preferred Stock (Predecessor)
Warrants to purchase shares of Company's Series B convertible preferred stock \| shares	342,011
Exercise price \| $ / shares	$ 7.3097

Common Stock (Details)

Common Stock (Details) - USD ($)			12 Months Ended
Common Stock (Details) - USD ($)	Jul. 21, 2023	Apr. 27, 2023	Dec. 31, 2023	Dec. 31, 2022
Common Stock
Number of shares of common stock authorized			500,000,000	207,450,050
Common stock, par value per share			$ 0.0001	$ 0.0001
Common stock, shares issued			37,159,600	138,848,177
Priveterra common stock, outstanding prior to the Merger			37,159,600	138,825,356
Amount of cash dividend has been declared			$ 0	$ 0
Number of votes per share			one	one
Number of shares to be received prior to merger	2.328
Number of common stock issued on conversion	1
Total common stock reserved			38,876,675	59,178,609
Employee Stock Option
Common Stock
Total common stock reserved			3,846,972	9,694,890
Shares available for future issuance under the stock incentive plan
Common Stock
Total common stock reserved			3,536,710	27,884,000
Convertible preferred stock warrants outstanding
Common Stock
Total common stock reserved				342,011
Founder Shares
Common Stock
Common stock, par value per share	$ 0.0001
Priveterra common stock, outstanding prior to the Merger	6,900,000
Number of common stock issued on conversion	1
Number of founder shares subject to vesting and forfeiture conditions.	3,450,000	3,450,000

Common Stock - Common stock res

Common Stock - Common stock reserved for future issuance (Details) - shares	Dec. 31, 2023	Dec. 31, 2022
Common Stock
Total common stock reserved	38,876,675	59,178,609
Conversion of convertible preferred stock
Common Stock
Total common stock reserved		21,257,708
Employee Stock Option
Common Stock
Total common stock reserved	3,846,972	9,694,890
Restricted stock units (unvested)
Common Stock
Total common stock reserved	1,012,994
Shares available for future issuance under the stock incentive plan
Common Stock
Total common stock reserved	3,536,710	27,884,000
Warrants
Common Stock
Total common stock reserved	14,479,999
Contingent consideration
Common Stock
Total common stock reserved	16,000,000
Convertible preferred stock warrants outstanding
Common Stock
Total common stock reserved		342,011

Share-based Compensation Stoc_3

Share-based Compensation Stock Incentive Plans - Stock Incentive Plans (Details) - shares	12 Months Ended
	Dec. 31, 2023	Jul. 21, 2023	Dec. 31, 2022
AEON 2013 Stock Incentive Plan
Share-based Compensation Stock Incentive Plans
Aggregate number of shares available for future grant			27,884,000
Minimum shareholding as a percentage of total combined voting power of all classes of stock of the Company	10%
Exercise price of options as a percentage of the estimated fair value of the Company's common stock, maximum	110%
AEON 2013 Stock Incentive Plan \| Employee Stock Option
Share-based Compensation Stock Incentive Plans
Expiration term of awards	10 years
Percentage of vesting on the first anniversary of the date of grant	25%
AEON 2013 Stock Incentive Plan \| Employee Stock Option \| Minimum
Share-based Compensation Stock Incentive Plans
Vesting period	3 years
AEON 2013 Stock Incentive Plan \| Employee Stock Option \| Maximum
Share-based Compensation Stock Incentive Plans
Vesting period	4 years
AEON 2013 Stock Incentive Plan \| Stock options granted to a 10% stockholder
Share-based Compensation Stock Incentive Plans
Expiration term of awards	5 years
AEON 2013 Stock Incentive Plan \| Restricted stock awards \| Minimum
Share-based Compensation Stock Incentive Plans
Vesting period	1 year
AEON 2013 Stock Incentive Plan \| Restricted stock awards \| Maximum
Share-based Compensation Stock Incentive Plans
Vesting period	3 years
ABP Sub Inc. 2019 Incentive Award Plan
Share-based Compensation Stock Incentive Plans
Aggregate number of shares available for future grant	0	237,500
AEON Biopharma Inc 2023 Incentive Award Plan
Share-based Compensation Stock Incentive Plans
Aggregate number of shares available for future grant		3,839,892

Share-based Compensation Stoc_4

Share-based Compensation Stock Incentive Plans - Share-based Award Activity (Details) $ / shares in Units, $ in Thousands				5 Months Ended		7 Months Ended	12 Months Ended
	Jul. 21, 2023 USD ($) $ / shares shares	Apr. 27, 2023 USD ($)	Jan. 06, 2023 USD ($)	Dec. 31, 2023 USD ($) $ / shares shares	Dec. 31, 2023 USD ($) $ / shares shares	Jul. 21, 2023 USD ($) $ / shares shares	Dec. 31, 2023 USD ($) $ / shares shares	Dec. 31, 2022 USD ($) $ / shares shares
Other than options, Weighted Average Exercise Price
Lock up term	1 year
Common stock, shares outstanding				37,159,600	37,159,600		37,159,600	138,825,356
Priveterra \| Intangible Assets Acquired
Other than options, Weighted Average Exercise Price
Fair value of the replacement awards \| $	$ 13,300	$ 13,300	$ 13,331
Priveterra \| Intangible Assets Acquired \| Employee Stock Option
Other than options, Weighted Average Exercise Price
Fair value of the replacement awards \| $		11,500
Priveterra \| Intangible Assets Acquired \| Restricted stock units (unvested)
Other than options, Weighted Average Exercise Price
Fair value of the replacement awards \| $		$ 1,800
AEON 2013 Stock Incentive Plan
Options, Number of Shares
Outstanding, beginning of period						9,694,890	9,694,890	10,516,525
Options forfeited								(821,635)
Options cancelled in connection with Merger						(9,694,890)
Outstanding, end of period								9,694,890
Exercisable, end of period								9,694,890
Options, Weighted Average Exercise Price
Outstanding, beginning of period \| $ / shares						$ 1.53	$ 1.53	$ 1.51
Options forfeited \| $ / shares								1.23
Options cancelled in connection with Merger \| $ / shares						$ 1.53
Outstanding, end of period \| $ / shares								1.53
Exercisable, end of period \| $ / shares								$ 1.53
Other than options, Weighted Average Exercise Price
Weighted average remaining contractual life of options outstanding								2 years 6 months
Aggregate intrinsic value of options outstanding \| $								$ 300
Unrecognized compensation expense related to non-vested stock options \| $				$ 0	$ 0		$ 0	$ 0
Aggregate number of shares available for future grant								27,884,000
ABP Sub Inc. 2019 Incentive Award Plan
Options, Weighted Average Exercise Price
Options granted \| $ / shares	$ 10
Other than options, Weighted Average Exercise Price
Weighted average fair value of options granted per share \| $ / shares								$ 488.02
Weighted average remaining contractual life of options outstanding							7 years 1 month 6 days	8 years 1 month 6 days
Share-based compensation expense \| $	$ 1,000
Unrecognized compensation expense related to non-vested stock options \| $				$ 4,900	$ 4,900		$ 4,900	$ 12,300
Weighted-average remaining requisite service period for which unrecognized compensation expense related to nonvested stock options expected to be recognized							10 months	24 months
Conversion ratio of options and RSU awards that were outstanding immediately prior to the Merger to common stock	77.65
Aggregate number of shares available for future grant	237,500			0	0	237,500	0
Options granted to purchase number of sub options	45,130					45,130
Options to purchase number of shares of common stock	3,515,219					3,515,219
Options to purchase number of RSU awards	15,059					15,059
RSU awards covering number of shares of common stock	1,169,366					1,169,366
Common stock, shares outstanding	127,801					127,801
ABP Sub Inc. 2019 Incentive Award Plan \| Employee Stock Option
Options, Number of Shares
Outstanding, beginning of period				45,130	3,515,219	45,534	45,534	38,172
Options granted					0			16,437
Options forfeited					0	(404)		(9,075)
Outstanding, end of period	45,130			3,515,219	3,515,219	45,130	3,515,219	45,534
Exercisable, end of period	30,968					30,968		23,155
Options, Weighted Average Exercise Price
Outstanding, beginning of period \| $ / shares				$ 959.06	$ 10	$ 958.75	$ 958.75	$ 986.36
Options granted \| $ / shares					0			898.58
Options forfeited \| $ / shares					0	1,021.98		965.92
Outstanding, end of period \| $ / shares	$ 959.06			$ 10	$ 10	959.06	$ 10	958.75
Exercisable, end of period \| $ / shares	$ 956.64					$ 956.64		$ 958.86
Other than options, Weighted Average Exercise Price
Share-based compensation expense \| $				$ 2,400		$ 2,700		$ 5,900
ABP Sub Inc. 2019 Incentive Award Plan \| Restricted stock units (unvested)
Other than options, Number of Shares
Granted				1,169,366
Vested				(127,801)
Forfeited				(28,571)
Outstanding, ending of period				1,012,994	1,012,994		1,012,994
Other than options, Weighted Average Exercise Price
Granted \| $ / shares				$ 10.84
Vested \| $ / shares				10.84
Forfeited \| $ / shares				10.84
Outstanding, ending of period \| $ / shares				$ 10.84	$ 10.84		$ 10.84
Number of awards contained vesting criteria	466,468
Amount of awards inlcuded in purchase consideration \| $	$ 1,800
Share-based compensation expense \| $				$ 800		$ 500
Unrecognized compensation expense related to non-vested stock options \| $				$ 9,600	$ 9,600		$ 9,600
Weighted-average remaining requisite service period for which unrecognized compensation expense related to nonvested stock options expected to be recognized							31 months
AEON Biopharma Inc 2023 Incentive Award Plan
Options, Number of Shares
Options granted				331,753
Outstanding, end of period				331,753	331,753		331,753
Options, Weighted Average Exercise Price
Options granted \| $ / shares				$ 5.47
Outstanding, end of period \| $ / shares				$ 5.47	$ 5.47		$ 5.47
Other than options, Weighted Average Exercise Price
Aggregate number of shares available for future grant	3,839,892					3,839,892
Percentage of fully-diluted shares outstanding considered for annual increase of shares available for issuance	4%
AEON Biopharma Inc 2023 Incentive Award Plan \| Employee Stock Option
Other than options, Weighted Average Exercise Price
Weighted average fair value of options granted per share \| $ / shares							$ 3.18
Weighted average remaining contractual life of options exercisable							9 years 7 months 6 days
Share-based compensation expense \| $				$ 100
Unrecognized compensation expense related to non-vested stock options \| $				$ 900	$ 900		$ 900
Weighted-average remaining requisite service period for which unrecognized compensation expense related to nonvested stock options expected to be recognized							35 months

Share-based Compensation Stoc_5

Share-based Compensation Stock Incentive Plans - Share-based Compensation Expense and Valuation Information (Details) - USD ($) $ in Millions		5 Months Ended	7 Months Ended	12 Months Ended
	Jul. 21, 2023	Dec. 31, 2023	Jul. 21, 2023	Dec. 31, 2023	Dec. 31, 2022
Assumptions
Expected volatility				57%
Expected volatility, minimum					47%
Expected volatility, maximum					61%
Risk-free interest rate, minimum				4.10%	1.87%
Risk-free interest rate, maximum				4.40%	3.92%
Minimum
Assumptions
Expected life (in years)				3 years	5 years 9 months
Maximum
Assumptions
Expected life (in years)				6 years 3 months	6 years 3 months
ABP Sub Inc. 2019 Incentive Award Plan
Share-based Compensation Expense
Share-based compensation expense	$ 1
Assumptions
Expected dividend yield				0%	0%
Selling, general and administrative expenses
Share-based Compensation Expense
Share-based compensation expense		$ 3.1	$ 2.8		$ 5.9
Selling, general and administrative expenses \| ABP Sub Inc. 2019 Incentive Award Plan \| Successor period, July 22, 2023, to September 30, 2023
Share-based Compensation Expense
Share-based compensation expense		0.4
Research and development expenses
Share-based Compensation Expense
Share-based compensation expense		$ 0.8	$ 0.4		$ 1.3

Subsequent Events - Termination

Subsequent Events - Termination of Forward Purchase Agreements (Details) - Subsequent Events - USD ($)		3 Months Ended
	Mar. 18, 2024	Mar. 31, 2024
Subsequent Events
Subscription receivable and derivative liability		$ 20,300,000
ACM ARRT J LLC
Subsequent Events
Number of shares retained upon termination agreement	3,100,000
Liquidated damages if it fails to meet requirements subject to termination agreement	$ 1,500,000
Polar
Subsequent Events
Number of shares retained upon termination agreement	3,175,000
Liquidated damages if it fails to meet requirements subject to termination agreement	$ 1,500,000

Subsequent Events - Convertible

Subsequent Events - Convertible Note Subscription Agreement (Details) - Convertible notes $ in Millions	Mar. 24, 2024 USD ($) item	Mar. 19, 2024 USD ($)	Jul. 22, 2022 USD ($)
Subsequent Events
Principal amount			$ 1
Subsequent events \| Subscription Agreement \| Daewoong
Subsequent Events
Principal amount of debt issuable	$ 10	$ 15
Annual rate of interest (as a percent)		15.79%
Term of debt		3 years
Number of convertible note sold \| item	1
Principal amount	$ 5
Term for issuance of convertible note following the compliance with certain conditions	30 days

Subsequent Events - License Agr

Subsequent Events - License Agreement Amendment (Details) - Subsequent events - Daewoong License and Supply Agreement	Mar. 19, 2024 $ / shares
Subsequent Event [Line Items]
License termination term upon satisfaction of certain conditions	6 months
Price of know how in the event of termination	$ 1
Percentage of common stock to be issued for termination of Termination Purchase Right	50%

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	5 Months Ended	7 Months Ended	12 Months Ended
Pay vs Performance Disclosure - USD ($) $ in Thousands	Dec. 31, 2023	Jul. 21, 2023	Dec. 31, 2022
Pay vs Performance Disclosure
Net Income (Loss)	$ 24,046	$ (60,678)	$ (52,556)

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
Insider Trading Arrangements	Dec. 31, 2023
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false