Costco Wholesale (COST) 10-K2024 FY Annual report

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).

We offer merchandise and services in the following categories:

Warehouse ancillary operate primarily within or next to our warehouses, encouraging members to shop more frequently. The number of warehouses with gas stations varies significantly by country, and we have no gasoline business in Korea or Sweden. We operated 719 gas stations at the end of 2024. Our gasoline business represented approximately 12% of total net sales in 2024.

Our other businesses sell products and services that complement our warehouse operations. Our e-commerce operations give members convenience and a broader selection of goods and services. Net sales for e-commerce represented approximately 7% of total net sales in 2024. Digitally originated sales, which represents sales that a member initiates through a digitally enabled device, including e-commerce, business delivery, travel, and same-day grocery, represented approximately 9% of total net sales in 2024. Our business centers carry items tailored specifically for food services, convenience stores and offices, and offer walk-in shopping and deliveries. Business centers are included in our total warehouse count.

Costco Travel offers vacation packages, car rentals, cruises and other travel products exclusively for Costco members (offered in the U.S., Canada, and the U.K.).

We have direct relationships with many producers of brand-name merchandise. We do not obtain a significant portion of merchandise from any one supplier. When sources of supply become unavailable, we seek alternatives. To ensure sufficient product supply for future growth, we pursue diversification in our supply-chain management and seek to expand in-country production. We also purchase and manufacture private-label merchandise, as long as quality and member demand are high and the value to our members is significant.

Our members may utilize their memberships at all of our warehouses and e-commerce sites. Gold Star memberships are available to individuals; Business memberships are limited to businesses, including individuals with a business license, retail sales license, or comparable document. Business members may add additional cardholders (affiliates), to which the same annual fee applies. Affiliates are not available for Gold Star members. During fiscal 2024, our annual fee for these memberships was $60 in the U.S. and varies in other countries. All paid memberships include a free household card.

Paid members (except affiliates) were eligible to upgrade to an Executive membership in the U.S., for an additional annual fee of $60. Executive memberships are also available in Canada, Mexico, the U.K., Japan, Korea, Taiwan, and Australia, for which the additional fee varies. Executive members earn a 2% reward on qualified purchases (generally up to a maximum reward of $1,000 per year), redeemable at Costco warehouses. The sales penetration of Executive members represented approximately 73.3% of worldwide net sales in 2024.

Our member renewal rate was 92.9% in the U.S. and Canada and 90.5% worldwide at the end of 2024. The majority of members renew within six months following their renewal date. Our renewal rate, which excludes affiliates of Business members, is a trailing calculation that captures renewals during the period seven to eighteen months prior to the reporting date. Our membership counts include active memberships as well as memberships that have not renewed within the 12 months prior to the reporting date.

Our membership was made up of the following (in thousands):

Effective September 1, 2024, we increased our membership fees in the U.S. and Canada for Gold Star, Business, and Business affiliates to $65 per year. The Executive membership fee increased from $120 to $130 (membership fee of $65, plus Executive upgrade of $65), and the maximum annual 2% reward associated with the Executive Membership increased from $1,000 to $1,250.

“Take Care of Our Employees,” is a key component of our code of ethics and is fundamental to our commitment to “Take Care of Our Members.” We must also carefully control our selling, general and administrative (SG&A) expenses, so that we can sell high quality goods and services at low prices. Compensation and benefits for employees is our largest expense after the cost of merchandise and is carefully monitored.

At the end of 2024, we employed 333,000 employees worldwide. Approximately 95% are employed in our membership warehouses and distribution channels. Approximately 5% are represented by unions. We also utilize seasonal employees.

The total number of employees by segment was:

We believe that our warehouses are among the most productive in the retail industry, owing largely to the commitment and efficiency of our employees. We seek to provide them not merely with employment but careers. Many attributes of our business contribute to the objective. The more significant include: competitive compensation and benefits; a commitment to employee development and promoting from within; and a target ratio of at least 50% of our employee base being full-time employees. These attributes contribute to what we consider, especially for the industry, a high retention rate. In 2024, in the U.S. and Canada that rate was approximately 93% for employees who have been with us for at least one year.

The commitment to “Take Care of Our Employees” includes promoting diversity, equity and inclusion and creating an inclusive and respectful workplace. We strive for an environment where all employees feel that they belong, are accepted, included, respected and supported because of whom they are individually. We demonstrate leadership commitment to equity through consistent communication, employee development and education, support of diversity and inclusion initiatives within the organization, community involvement, and supplier inclusion. Costco continues its efforts to develop future leaders, including through our supervisor in training (SIT) programs in the U.S. and Canada. In 2024, over 7,500 hourly employees completed the 6-week course.

Costco strives to provide our employees with competitive wages and excellent benefits. In July 2024, we increased the starting wage to at least $19.50 for all entry-level positions in the U.S. and Canada. We also increased the top of wage scales by $1 per hour, and increased all other steps of the wage scales by $0.50 per hour, bringing our average hourly rate at the end of 2024 for hourly employees in the U.S. to approximately $31 per hour. We continue to offer expansive benefits in the U.S. that provide physical, emotional and financial well-being support for employees and their dependents at little cost to our employees. Costco remains committed to protecting the health and safety of our members and employees and to serving our communities.

For more detailed information regarding our programs and initiatives, see “Employees” within our Sustainability Commitment (located on our website). The Sustainability Commitment and other information on our website are not incorporated by reference into and do not form any part of this Annual Report.

Our industry is highly competitive, based on factors such as price, merchandise quality and selection, location, convenience, distribution strategy, and customer service. We compete on a worldwide basis with global, national, and regional wholesalers and retailers, including supermarkets, supercenters, online retailers, gasoline stations, hard discounters, department and specialty stores, and operators selling a single category or narrow range of merchandise. Walmart, Target, Kroger, and Amazon are among our significant general merchandise retail competitors in the U.S. We also compete with other warehouse clubs, including Walmart’s Sam’s Club and BJ’s Wholesale Club in the U.S. Many of the major metropolitan areas in the U.S. and certain of our Other International locations have multiple competing clubs.

We believe that, to varying degrees, our trademarks, trade names, copyrights, proprietary processes, trade secrets, trade dress, domain names and similar intellectual property add significant value to our business and are important to our success. We have invested significantly in the development and protection of our well-recognized brands, including the Costco Wholesale trademarks and our private-label brand, Kirkland Signature. We believe that Kirkland Signature products are high quality, offered at prices that are generally lower than national brands, and help lower costs, differentiate our merchandise offerings, and generally earn higher margins. We expect to continue to increase the sales penetration of our private-label items.

We rely on trademark and copyright laws, trade-secret protection, and confidentiality, license and other agreements with our suppliers, employees and others to protect our intellectual property. The availability and duration of trademark registrations vary by country; however, trademarks are generally valid and may be renewed indefinitely as long as they are in use and registrations are maintained.

Our U.S. website is www.costco.com. We make available through the Investor Relations section of that site, free of charge, our Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, Proxy Statements and Forms 3, 4 and 5, and any amendments to those reports, as soon as reasonably practicable after filing such materials with or furnishing such documents to the Securities and Exchange Commission (SEC). The information found on our website is not part of this or any other report filed with or furnished to the SEC. The SEC maintains a site that contains reports, proxy and information statements, and other information regarding issuers, such as the Company, that file electronically with the SEC at www.sec.gov.

We have a code of ethics for senior financial officers, pursuant to Section 406 of the Sarbanes-Oxley Act. Copies of the code are available free of charge by writing to Secretary, Costco Wholesale Corporation, 999 Lake Drive, Issaquah, WA 98027. If the Company makes any amendments to this code (other than technical, administrative, or non-substantive amendments) or grants any waivers, including implicit waivers, to the Chief Executive Officer, Chief Financial Officer or principal accounting officer and controller, we will disclose (on our website or in a Form 8-K report filed with the SEC) the nature of the amendment or waiver, its effective date, and to whom it applies.

The executive officers of Costco, their position, and ages are listed below. Most officers have over 25 years of service with the Company.

Our financial and operational performance is highly dependent on our U.S. and Canadian operations, which comprised 86% and 85% of net sales and operating income in 2024. Within the U.S., we are highly dependent on our California operations, which comprised 27% of U.S. net sales in 2024. Our California market, in general, has a larger percentage of higher volume warehouses as compared to our other domestic markets. Any substantial slowing or sustained decline in these operations could materially adversely affect our business and financial results. Declines in financial performance of our U.S. operations, particularly in California, and our Canadian operations could arise from, among other things: slow growth or declines in comparable warehouse sales (comparable sales); negative trends in operating expenses, including increased labor, healthcare and energy costs; failing to meet targets for warehouse openings; cannibalizing existing locations with new warehouses; shifts in sales mix toward lower gross margin products; changes or uncertainties in economic conditions in our markets, including higher levels of unemployment and depressed home values; and failing to consistently provide high quality and innovative new products.

Our growth is dependent, in part, on our ability to acquire property and build or lease new warehouses and depots. We compete with other retailers and businesses for suitable locations. Local land use and other regulations restricting the construction and operation of our warehouses and depots, as well as local community actions opposed to the location of our warehouses or depots at specific sites and the adoption of local laws restricting our operations and environmental regulations, may impact our ability to find suitable locations and increase the cost of sites and of constructing, leasing and operating warehouses and depots. We also may have difficulty negotiating leases or purchase agreements on acceptable terms. In addition, certain jurisdictions have enacted or proposed laws and regulations that would prevent or restrict the operation or expansion plans of certain large retailers and warehouse clubs, including us. Failure to effectively manage these and other similar factors may affect our ability to timely build or lease and operate new warehouses and depots, which could have a material adverse effect on our future growth and profitability.

We seek to expand in existing markets to attain a greater overall market share. A new warehouse may draw members away from our existing warehouses and adversely affect their comparable sales performance, member traffic, and profitability.

We intend to continue to open warehouses in new markets. Associated risks include difficulties in attracting members due to a lack of familiarity with us, attracting members of other wholesale club operators, our lesser familiarity with local member preferences, and seasonal differences in the market. Entry into new markets may bring us into competition with new competitors or with existing competitors with a large, established market presence. We cannot ensure that new warehouses and new e-commerce sites will be profitable and future profitability could be delayed or otherwise materially adversely affected.

We have made and may continue to make investments and acquisitions to improve the speed, accuracy and efficiency of our supply chains and delivery channels. The effectiveness of these investments can be less predictable than opening new locations and might not provide the anticipated benefits or desired rates of return.

Membership loyalty and growth are essential to our business. The extent to which we achieve growth in our membership base, increase the penetration of Executive membership, and sustain high renewal rates materially influences our profitability. Damage to our brands or reputation may negatively impact comparable sales, diminish member trust, and reduce renewal rates and, accordingly, net sales and membership fee revenue, negatively impacting our results of operations.

We sell many products under our Kirkland Signature brand. Maintaining consistent product quality, competitive pricing, and availability of these products is essential to developing and maintaining member loyalty. These products also generally carry higher margins than national brand products and represent a growing portion of our overall sales. If the Kirkland Signature brand experiences a loss of member acceptance or confidence, our sales and gross margin results could be adversely affected.

We depend on the orderly operation of the merchandise receiving and distribution process, primarily through our depots. We also rely upon processing, packaging, manufacturing and other facilities to support our business, which includes the production of certain private-label items. Although we believe that our operations are efficient, disruptions due to extreme weather, pandemics or other catastrophic events, labor issues, work stoppage, or other shipping problems may result in delays in the production and delivery of merchandise to and the operation of our warehouses, which could adversely affect sales and the satisfaction of our members. Our e-commerce operations depend heavily on logistics providers, both internal and external, and are negatively affected when services are unable to be provided in a timely fashion.

It is difficult to consistently and successfully predict the products and services that our members will desire. Our success depends, in part, on our ability to identify and respond to trends in demographics and consumer preferences. Failure to identify timely or effectively respond to changing consumer tastes, preferences and spending patterns including those related to resource efficiency, environmental protection, human rights, and the transition to a low-carbon economy could negatively affect our relationship with our members, the demand for our products and services, and our market share. We sell a substantial amount of gasoline, the demand for which could be impacted by concerns and regulation about climate change.

If we are not successful at predicting our sales trends and adjusting our purchases accordingly, we may have excess inventory, which could result in additional markdowns, or we may experience out-of-stock positions and delivery delays, which could result in higher costs, both of which would reduce our operating performance. This could have an adverse effect on net sales, gross margin and operating income.

IT systems play a crucial role in conducting our business. These systems are utilized to process a very high volume of transactions, conduct payment transactions, track and value our inventory and produce reports critical for making business decisions. Failure or disruption of these systems could have an adverse impact on our ability to buy products and services from our suppliers, produce goods in our manufacturing plants, move the products in an efficient manner to our warehouses and sell products to our members. Given the high volume of transactions we process, it is important that we build strong digital resiliency to prevent disruption from events such as power outages, computer and telecommunications failures, viruses, internal or external security breaches and other cybersecurity incidents, errors by employees, extreme weather, and catastrophic events. Any debilitating failure of our critical IT systems, data centers and backup systems would require significant investments in resources to restore IT services and may cause serious impairment in our business operations including loss of business services, increased cost of moving merchandise and failure to provide service to our members. We are currently making substantial investments in technology and IT transformation projects, including maintaining and enhancing our digital resiliency, and failure or delay in these projects could be costly and harmful to our business. Failure to deliver IT transformation efforts efficiently and effectively could result in the loss of our competitive position and adversely impact our financial condition and results of operations. Insufficient IT capacity could also impact our capacity for timely, complete and accurate financial and non-financial reporting required by law.

Increased security threats and more sophisticated cyber misconduct pose a risk to our systems, networks, products and services. We rely upon IT systems and networks, some of which are managed by or belong to third parties, including suppliers, partners, vendors, and service providers. Additionally, we collect, store and process sensitive information relating to our business, members, employees, and other third parties. Operating these IT systems and networks, and processing and maintaining this data, in a secure manner, is critical to our business operations and strategy. Remote work has also expanded the possible attack surfaces. Attempts to gain unauthorized access to systems, networks and data, both ours and third parties with whom we work, are increasing in frequency and sophistication, and in some cases, these attempts are successful. Cybersecurity attacks may range from random attempts to coordinated and targeted attacks, including sophisticated computer crimes and advanced persistent threats. Phishing attacks have emerged as particularly prominent, including as vectors for ransomware attacks, which have increased in breadth and frequency. While we train our employees as part of our security efforts, that training cannot be completely effective. These threats pose a risk to the security of our systems and networks and the confidentiality, integrity, and availability of our data. Our IT systems and networks, or those managed by third parties such as cloud providers or suppliers that otherwise host or have access to confidential information, periodically have vulnerabilities, which may go unnoticed for a period of time. Our logging capabilities, or the logging capabilities of third parties, are also not always complete or sufficiently detailed, affecting our ability to fully investigate and understand the scope of security events. While our cybersecurity and compliance efforts seek to mitigate such risks, there can be no guarantee that the actions and controls we and our third-party service providers have implemented and are implementing, will be sufficient to protect our systems, information or other property.

The potential impacts of a cybersecurity attack include reputational damage, litigation, government enforcement actions, penalties, disruption to systems and operations, unauthorized release of confidential or otherwise protected information, corruption of data, diminution in the value of our investment in IT systems and increased cybersecurity protection and remediation costs. This could adversely affect our competitiveness, results of operations and financial condition and, critically in light of our business model, loss of member confidence. Further, the insurance coverage we maintain and indemnification arrangements with third parties may be inadequate to cover claims, costs, and liabilities relating to

cybersecurity incidents. In addition, data we collect, store and process is subject to a variety of U.S. and international laws and regulations (such as the European Union General Data Protection Regulation, California Consumer Privacy Act, Health Insurance Portability and Accountability Act, and China's Personal Information Protection Act), evolving rules concerning artificial intelligence, and other privacy and cybersecurity laws and restrictions on use of member information that may also impair our ability to utilize data, consistent with member consents and preferences, which may carry significant potential penalties for noncompliance.

We accept payments using a variety of methods, including select credit and debit cards, cash and checks, co-brand cardholder rebates, Executive member 2% reward certificates, and our shop card. As we offer new payment options to our members, we may be subject to additional rules, regulations, compliance requirements, and higher fraud losses. For certain payment methods, we pay interchange and other related acceptance fees, along with additional transaction processing fees. We rely on third parties to provide payment transaction processing services for credit and debit cards and our shop card. It could disrupt our business if these parties become unwilling or unable to provide these services to us. We are also subject to fee increases by these service providers.

We must comply with evolving payment card association and network operating rules, including data security rules, certification requirements and rules governing electronic funds transfers. For example, we are subject to Payment Card Industry Data Security Standards, which contain compliance guidelines and standards with regard to our security surrounding the physical and electronic storage, processing and transmission of individual cardholder data. If our internal systems are breached or compromised, we may be liable for card re-issuance costs, subject to fines and higher transaction fees and lose our ability to accept card payments from our members, and our business and operating results could be adversely affected. Our failure to offer payment methods desired by our members could create a competitive disadvantage.

Omnichannel retailing is rapidly evolving, and we must keep pace with changing member expectations and new developments by our competitors. Our members are increasingly using mobile phones, tablets, computers, and other devices to shop and to interact with us through social media. We are making

investments in our websites and mobile applications. If we are unable to make, improve, or develop relevant member-facing technology in a timely manner, our ability to compete and our results of operations could be adversely affected.

Our success depends on the continued contributions of our employees, including members of our senior management and other key operations, IT, merchandising and administrative personnel. Failure to identify and implement a succession plan for senior management could negatively impact our business. We must attract, train and retain a large and growing number of qualified employees, while controlling related labor costs and maintaining our core values. Our ability to control labor and benefit costs is subject to numerous internal and external factors, including regulatory changes, prevailing wage rates, union relations and healthcare and other insurance costs. We compete with other retail and non-retail businesses for these employees and invest significant resources in training and motivating them. There is no assurance that we will be able to attract or retain highly qualified employees in the future, which could have a material adverse effect on our business, financial condition and results of operations.

Claims for employee health care benefits, workers’ compensation, general liability, property damage, directors’ and officers’ liability, vehicle liability, inventory loss, and other exposures are funded predominantly through self-insurance. Insurance coverage is maintained for certain risks to limit exposures arising from very large losses. The types and amounts of insurance may vary from time to time based on our decisions with respect to risk retention and regulatory requirements. Significant claims or events, regulatory changes, a substantial rise in costs of health care or costs to maintain our insurance or the failure to maintain adequate insurance coverage could have an adverse impact on our financial condition and results of operations.

Although we maintain specific coverages for catastrophic property losses, we still bear a significant portion of the risk of losses incurred as a result of any physical damage to, or the destruction of, any warehouses, depots, manufacturing or home office facilities, loss or spoilage of inventory, and business interruption. Such losses could materially impact our cash flows and results of operations.

The retail business is highly competitive. We compete for members, employees, sites, products and services and in other important respects with a wide range of local, regional and national wholesalers and retailers, both in the United States and in foreign countries, including other warehouse-club operators, supermarkets, supercenters, online retailers, gasoline stations, hard discounters, department and specialty stores and operators selling a single category or narrow range of merchandise. Such retailers and warehouse club operators compete vigorously and in a variety of ways, including pricing, selection and availability, services, location, convenience, store hours, and the attractiveness and ease of use of websites and mobile applications. The evolution of retailing in online and mobile channels has improved the ability of customers to comparison shop, which has enhanced competition. Some competitors have greater financial resources and technology capabilities, including the faster adoption of artificial intelligence, better access to merchandise, and greater market penetration than we do. Our inability to respond effectively to competitive pressures, changes in the retail markets or customer expectations could result in lost market share and negatively affect our financial results.

Higher energy and gasoline costs, inflation, levels of unemployment, healthcare costs, consumer debt levels, foreign-currency exchange rates, unsettled financial markets, weaknesses in housing and real estate markets, reduced consumer confidence, changes and uncertainties related to government fiscal, monetary and tax policies including changes in interest rates, tax rates, duties, tariffs, or other restrictions, sovereign debt crises, pandemics and other health crises, and other economic factors could adversely affect demand for our products and services, require a change in product mix, or impact the cost of or ability to purchase inventory. Additionally, trade-related actions in various countries, particularly China and the United States, have affected the costs of some of our merchandise. The degree of our exposure is dependent on (among other things) the type of goods, rates imposed, and timing of the tariffs. The impact to our net sales and gross margin is influenced in part by our merchandising and pricing strategies in response to potential cost increases. Higher tariffs could adversely impact our results.

Prices of certain commodities, including gasoline and consumable goods used in manufacturing and our warehouse retail operations, are historically volatile and are subject to fluctuations arising from changes in domestic and international supply and demand, inflationary pressures, labor costs, competition, market speculation, government regulations, taxes and periodic delays in delivery. Rapid and significant changes in commodity prices and our ability and desire to pass them through to our members may affect our sales and profit margins. These factors could also increase our merchandise costs and selling, general and administrative expenses, and otherwise adversely affect our operations and financial results. General economic conditions can also be affected by events like the outbreak of hostilities or acts of terrorism.

Inflationary factors such as increases in merchandise costs may adversely affect our business, financial condition and results of operations. We may not be able to adjust prices to sufficiently offset the effect of cost increases without negatively impacting consumer demand.

We depend heavily on our ability to purchase quality merchandise in sufficient quantities at competitive prices. As the quantities we require continue to grow, we have no assurances of continued supply, appropriate pricing or access to new products, and any supplier has the ability to change the terms upon which they sell to us or discontinue selling to us. Member demands may lead to out-of-stock positions causing a loss of sales and profits.

We buy from numerous domestic and foreign suppliers and importers. Our inability to acquire suitable merchandise on acceptable terms or the loss of key suppliers could negatively affect us. We may not be able to develop relationships with new suppliers, and products from alternative sources, if any, may be of a lesser quality or more expensive. Because of our efforts to adhere to high-quality standards for which available supply may be limited, particularly for certain food items, the large volumes we demand may not be consistently available. Our efforts to secure supply could lead to commitments that prove to be unsuccessful in the short and long-term.

Our suppliers (and those they depend upon for materials and services) are subject to risks, including labor disputes, union organizing activities, human and animal rights violations, financial liquidity, climate change, natural disasters, extreme weather conditions, environmental degradation, public health emergencies, supply constraints and general economic and political conditions and other risks similar to those we face that could limit their ability to timely provide us with acceptable merchandise. One or more of our suppliers might not adhere to our quality control, packaging, legal, regulatory, labor, human rights, environmental or animal welfare standards. These deficiencies may delay or preclude delivery of merchandise to us and might not be identified before we sell such merchandise to our members. This

failure could lead to recalls and litigation and otherwise damage our reputation and our brands, increase costs, and otherwise adversely impact our business.

During 2024, our international operations, including Canada, generated 28% and 33% of our net sales and operating income. Our international operations have accounted for an increasing portion of our warehouses, and we plan to continue international growth. To prepare our consolidated financial statements, we translate the financial statements of our international operations from local currencies into U.S. dollars using current exchange rates. Future fluctuations in exchange rates that are unfavorable to us may adversely affect the financial performance of our Canadian and Other International operations and have a corresponding adverse period-over-period effect on our results of operations. As we continue to expand internationally, our exposure to fluctuations in foreign exchange rates may increase.

A portion of the products we purchase is paid for in a currency other than the local currency of the country in which the goods are sold. Currency fluctuations may increase our merchandise costs and may not be passed on to members and thus may adversely affect our results of operations.

Natural disasters and extreme weather conditions, including those impacted by climate change, such as extreme temperatures, hurricanes, typhoons, floods, earthquakes, wildfires, droughts; acts of terrorism or violence, including active shooter situations; and energy shortages; particularly in California or Washington state, where our centralized operating systems and administrative personnel are located, could negatively affect our operations and financial performance. Such events could result in physical damage to our properties, additional heating, cooling, and refrigeration costs, limitations on store operating hours, less frequent visits by members to physical locations, the temporary closure of warehouses, depots, manufacturing or home office facilities, the temporary lack of an adequate work force, disruptions to our IT systems, the temporary or long-term disruption in the supply of products from some local or overseas suppliers, the temporary disruption in the transport of goods to or from overseas, damage to buildings or inventory, delays in the delivery of goods to our warehouses or depots, the temporary reduction in the availability of products in our warehouses, and long-term disruption or threats to the habitability of key markets in which we operate. These events could also reduce demand for our products or make it difficult or impossible to procure products. We may be required to suspend operations in some or all of our locations, which could have a material adverse effect on our business, financial condition and results of operations.

The emergence, severity, magnitude and duration of global or regional health crises are uncertain and difficult to predict. A pandemic could affect certain business operations, demand for our products and services, in-stock positions, costs of doing business, availability of labor, access to inventory, supply chain operations, our ability to predict future performance, exposure to litigation, and our financial performance, among other things. Other factors and uncertainties include, but are not limited to:

We believe that the price of our stock currently reflects high market expectations for our future operating results. Any failure to meet or delay in meeting these expectations, including our warehouse and e-commerce comparable sales growth rates, membership renewal rates, new member sign-ups, gross margin, earnings, earnings per share, new warehouse openings, or dividend or stock repurchase policies could cause the price of our stock to decline.

At the end of 2024, we operated 276 warehouses outside of the U.S. (31% of all warehouse locations), and we plan to continue expanding our international operations. Future operating results internationally could be negatively affected by a variety of factors, many similar to those we face in the U.S., certain of which are beyond our control. These factors include political and economic conditions, regulatory constraints, currency regulations, policy changes, and other matters in any of the countries or regions in which we operate, now or in the future. Other factors that may impact international operations include foreign trade (including tariffs and trade sanctions), monetary and fiscal policies and the laws and regulations of the U.S. and foreign governments, agencies and similar organizations, and risks associated with having major facilities in locations which have been historically less stable than the U.S. Risks inherent in international operations also include, among others, the costs and difficulties of managing international operations, adverse tax consequences, and difficulty in enforcing intellectual property rights. New reporting obligations globally are increasing the cost and complexity of doing business.

Accounting principles and related pronouncements, implementation guidelines, and interpretations we apply to a wide range of matters that are relevant to our business, including self-insurance liabilities, are highly complex and involve subjective assumptions, estimates and judgments by our management. Changes in rules or interpretation or changes in underlying assumptions, estimates or judgments by our management could significantly change our reported or expected financial performance and have a material impact on our consolidated financial statements.

Section 404 of the Sarbanes-Oxley Act of 2002 requires management assessments of the effectiveness of internal control over financial reporting and disclosure controls and procedures. If we are unable to maintain effective internal control over financial reporting or disclosure controls and procedures, our ability to record, process and report financial information accurately and to prepare financial statements within required time periods could be adversely affected, which could subject us to litigation or investigations requiring management resources and payment of legal and other expenses, negatively affect investor confidence in our financial statements and adversely impact our stock price. Uncertainties around our developing systems concerning controls for non-financial reporting also create risks.

We are subject to a variety of taxes and tax collection and remittance obligations in the U.S. and numerous foreign jurisdictions. Additionally, at any point in time, we may be under examination for value

added, sales-based, payroll, product, import or other non-income taxes. We may recognize additional tax expense, be subject to additional tax liabilities, or incur losses and penalties, due to changes in laws, regulations, administrative practices, principles, assessments by authorities and interpretations related to tax, including tax rules in various jurisdictions. We compute our income tax provision based on enacted tax rates in the countries in which we operate. As tax rates vary among countries, a change in earnings attributable to the various jurisdictions in which we operate could result in an unfavorable change in our overall tax provision. Additionally, changes in the enacted tax rates or adverse outcomes in tax audits, including transfer pricing disputes, could have a material adverse effect on our financial condition and results of operations.

We are subject to a wide and increasingly broad array of laws and regulations globally relating to ESG matters, including disclosure and compliance requirements. These laws and regulations, along with expanding voluntary reporting, are expanding the scope and complexity of matters that we are required to regulate, assess, and disclose and potentially limit our sourcing flexibility. Failure to comply with these laws could result in harm to our members, employees, workers in the value chain or others, significant costs to satisfy environmental compliance, remediation or compensatory requirements, or the imposition of severe penalties or restrictions on operations by governmental agencies or courts that could adversely affect our business, financial condition and results of operations.

Operations at our facilities require the treatment and disposal of wastewater, stormwater and agricultural and food processing wastes, the use and maintenance of refrigeration systems, including ammonia-based chillers, noise, odor and dust management, the operation of mechanized processing equipment, and other operations that potentially could affect the environment and public health and safety. Failure to comply with current and future environmental, health and safety standards could result in the imposition of fines and penalties, illness or injury of our employees, and claims or lawsuits related to such illnesses or injuries, and temporary closures or limits on the operations of facilities.

Natural gas, diesel fuel, gasoline, and electricity are used in our operations, distribution channels, and value chain. Government regulations limiting carbon dioxide and other greenhouse gas emissions and other environmental restrictions may increase compliance, operations, and merchandise costs, and other regulations affecting energy inputs could materially affect our profitability.

We undertake a bi-annual NIST CSF and CIS 18 Critical Security Controls assessment, conducted by a third-party, to measure our program maturity. We have implemented a variety of technologies, leveraging third-party security providers for some, and engage in multiple activities to seek to identify and mitigate vulnerabilities and risks in systems. These include, among other activities, scanning for common vulnerabilities and exposures, penetration tests on internal and external networks, code scans on applications, allowed application listing, configuration management tools, employee awareness and training, and internal and external audits. We also review, with various frequencies, on a risk-based priority select third parties with whom we do business, in an effort to reduce the likelihood of security incidents or business interruptions. We maintain cybersecurity insurance that would apply to certain losses arising from significant security incidents.

We maintain a security operations center, supported by external providers and our employees, which provides threat detection and incident response capabilities. We maintain cyber incident response plans and related playbooks, for execution by our information security team, in coordination with stakeholders (including legal counsel). Significant incidents will be escalated to a Cybersecurity Materiality Committee to assess materiality based on qualitative and quantitative factors. The Committee is composed of a cross-divisional group of executives representing the core business functions of Information Technology and Security, Operations, Administration, Finance and Accounting, and Legal. We conduct periodic tabletop exercises, including at the executive level, to test our response processes and incident management procedures.

Our Board of Directors has delegated certain responsibilities to the Audit Committee of the Board. The Audit Committee reviews and discusses with management the identification and mitigation of cybersecurity risks, including (among other things) the effectiveness of risk-management policies and practices designed to help safeguard our operations, financial systems, and data. Our Vice President of Information Security and Chief Information Security Officer (CISO) presents cybersecurity-related topics, including program maturity progress, regularly to the Audit Committee. The Internal Audit team, in its periodic compliance and risk assessment updates to the Audit Committee, also reports on its reviews of certain of our cybersecurity risk exposures, controls, and management actions. The full Board also receives cybersecurity evaluations from time to time.

Our information security organization is led by our CISO, who has over eighteen years of relevant experience, serving in leadership roles across the retail and technology sectors. The CISO is responsible for all aspects of our cybersecurity program, including cybersecurity engineering and architecture, cybersecurity operations, incident response, threat intelligence, identity and access management, cybersecurity risk and compliance, and vulnerability management. Our CISO reports to our Chief Information and Digital Officer (CIDO), who has more than thirty years' experience in which he has led global digital responsibilities, including leading global cyber teams. Our CIDO reports to the Chief Executive Officer.

At September 1, 2024, we operated 890 membership warehouses:

At the end of 2024, our warehouses contained approximately 130.9 million square feet of operating floor space: 91.1 million in the U.S.; 15.5 million in Canada; and 24.3 million in Other International. Total square feet associated with distribution and logistics facilities were approximately 31.9 million. Additionally, we operate various processing, packaging, manufacturing and other facilities to support our business, which includes the production of certain private-label items.

Not applicable.

Our common stock is traded on the NASDAQ Global Select Market under the symbol “COST.” On October 1, 2024, we had 10,471 stockholders of record.

Payment of dividends is subject to declaration by the Board of Directors. Factors considered in determining dividends include our profitability and expected capital needs. Subject to these qualifications, we presently expect to continue to pay dividends on a quarterly basis.

The following table sets forth information on our common stock repurchase activity for the fourth quarter of 2024 (dollars in millions, except per share data):

The following graph compares the cumulative total shareholder return assuming reinvestment of dividends on an investment of $100 in Costco common stock, S&P 500 Index, and the S&P Retail Select Index over the five years from September 1, 2019, through September 1, 2024. The S&P Retail Select Index comprises stocks in the S&P Total Market Index that are classified in the GICS Apparel Retail, Automotive Retail, Broadline Retail, Computer & Electronic Retail, Consumer Staples Merchandise Retail, Drug Retail, Food Retailers and Other Specialty Retail sub-industries.

The following graph provides information concerning average sales per warehouse over a 10-year period.

We believe that the most important driver of our profitability is increasing net sales, particularly comparable sales. Net sales includes our core merchandise categories (foods and sundries, non-foods, and fresh foods), warehouse ancillary (gasoline, pharmacy, optical, food court, hearing aids, and tire installation) and other businesses (e-commerce, business centers, travel and other). E-commerce and business center sales are allocated to the appropriate merchandise categories in the Net Sales discussion. Comparable sales is defined as net sales from warehouses open for more than one year, including remodels, relocations and expansions, and sales related to e-commerce sites operating for more than one year. The measure is intended as supplemental information and is not a substitute for net sales presented in accordance with U.S. generally accepted accounting principles (U.S. GAAP) and should be reviewed in conjunction with results reported in accordance with U.S. GAAP. Comparable sales growth is achieved through increasing shopping frequency from new and existing members and the amount they spend on each visit (average ticket). Sales comparisons can also be particularly influenced by certain factors that are beyond our control: fluctuations in currency exchange rates (with respect to our international operations) and inflation or deflation in the cost of gasoline and associated competitive conditions. The higher our comparable sales exclusive of these items, the more we can leverage our SG&A expenses, reducing them as a percentage of sales and enhancing profitability. Generating comparable sales growth is foremost a question of making available the right merchandise at the right prices, a skill that we believe we have repeatedly demonstrated over the long-term. Another substantial factor in net sales growth is the health of the economies in which we do business, including the effects of inflation or deflation, especially the United States. Net sales growth and gross margins are also impacted by our competition, which is vigorous and widespread, across a wide range of global, national and regional wholesalers and retailers, including those with e-commerce operations. While we cannot control or reliably predict general economic health or changes in competition, we believe that we have been successful historically in adapting our business to these changes, such as through adjustments to our pricing and merchandise mix, including increasing the penetration of our private-label items, and through online offerings.

Our philosophy is to provide our members with quality goods and services at competitive prices. We do not focus in the short-term on maximizing prices charged, but instead seek to maintain what we believe is a perception among our members of our “pricing authority” – consistently providing the most competitive values. Our net sales and gross margin are influenced in part by our merchandising and pricing strategies in response to cost increases. Those strategies can include, but are not limited to, working with our suppliers to share in absorbing cost increases, earlier-than-usual purchasing and in greater volumes, as well as passing cost increases on to our members. Our investments in merchandise pricing may include reducing prices on merchandise to drive sales or meet competition and holding prices steady despite cost increases instead of passing the increases on to our members, negatively impacting gross margin and gross margin as a percentage of net sales (gross margin percentage) in the near term.

We believe our gasoline business enhances traffic in our warehouses; it generally has a lower gross margin percentage and lower SG&A expense relative to our non-gasoline businesses. A higher penetration of gasoline sales will generally lower our gross margin percentage. Generally, rising gasoline prices benefit net sales growth which, given the higher sales base, negatively impacts our gross margin percentage but decreases our SG&A expenses as a percentage of net sales. A decline in gasoline prices has the inverse effect.

Government actions in various countries relating to tariffs, particularly China and the United States, have affected the costs of some of our merchandise. The degree of our exposure is dependent on (among other things) the type of goods, rates imposed, and timing of the tariffs. Higher tariffs could adversely impact our results.

We also achieve net sales growth by opening new warehouses. As our warehouse base grows, available and desirable sites become more difficult to secure, and square footage growth becomes a comparatively less substantial component of growth. Negative aspects of such growth include lower initial operating profitability relative to existing warehouses and cannibalization of sales at existing warehouses when openings occur in existing markets. Our rate of square footage growth is generally higher in foreign markets, due to the smaller base in those markets, and we expect that to continue. Our e-commerce business, domestically and internationally, has a lower gross-margin percentage than our warehouse operations.

The membership format is an integral part of our business and profitability. This format is designed to reinforce member loyalty and provide continuing fee revenue. The extent to which we achieve growth in our membership base, increase the penetration of Executive memberships, and sustain high renewal rates materially influences our profitability. Our paid-membership growth rate may be adversely impacted when warehouse openings occur in existing markets as compared to new markets. Our worldwide renewal rate may be adversely impacted by lower renewal rates in newer markets.

Our financial performance depends heavily on controlling costs. While we believe that we have achieved successes in this area, some significant costs are partially outside our control, particularly health care and utility expenses. With respect to the compensation of our employees, our philosophy is not to seek to minimize their wages and benefits. Rather, we believe that achieving our longer-term objectives of reducing employee turnover, increasing productivity and enhancing employee satisfaction requires maintaining compensation levels that are better than the industry average for much of our workforce. This may cause us, for example, to absorb costs that other employers might seek to pass through to their workforces. Because our business operates on very low margins, modest changes in various items in the consolidated statements of income, particularly merchandise costs and SG&A expenses, can have substantial impacts on net income.

In discussions of our consolidated operating results, we refer to the impact of changes in foreign currencies relative to the U.S. dollar, which are differences between the foreign exchange rates we use to convert the financial results of our international operations from local currencies into U.S. dollars. This impact is calculated based on the difference between the current and prior period's exchange rates. The impact of changes in gasoline prices on net sales is calculated based on the difference between the current and prior period's average price per gallon sold. Results expressed excluding the impacts of foreign exchange and gasoline prices are intended as supplemental information and are not a substitute for net sales presented in accordance with U.S. GAAP and should be reviewed in conjunction with results reported in accordance with U.S. GAAP.

Our fiscal year ends on the Sunday closest to August 31. References to 2024 and 2022 relate to the 52-week fiscal years ended September 1, 2024 and August 28, 2022. References to 2023 relate to the 53-week fiscal year ended September 3, 2023. Certain percentages presented are calculated using actual results prior to rounding.

Net sales increased $11,915 or 5% during 2024. The improvement was attributable to an increase in comparable sales and sales at new warehouses opened in 2023 and 2024, partially offset by the impact of one less week of sales in 2024. Sales increased $10,639, or 6% in core merchandise categories, increasing in all categories. Sales increased $1,276, or 3% in warehouse ancillary and other businesses, led by pharmacy, partially offset by a decrease in gasoline.

During 2024, the volume of gasoline sold increased approximately 1%, positively impacting net sales by $400, or 17 basis points, which includes the impact of one less week of sales in 2024. Lower gasoline prices negatively impacted net sales by $917, or 39 basis points, compared to 2023, with a 3% decrease in the average price per gallon. Changes in foreign currencies relative to the U.S. dollar negatively impacted net sales by approximately $474, 20 basis points, compared to 2023, attributable to our Canadian and Other International operations.

Comparable sales increased 5% during 2024 and were positively impacted by an increase in shopping frequency, partially offset by a slight decrease in average ticket.

Membership fee revenue increased 5% in 2024, driven by new member sign-ups and upgrades to Executive Membership. These increases were partially offset by one less week of membership fee income in 2024. At the end of 2024, our member renewal rates were 92.9% in the U.S. and Canada and 90.5% worldwide. Renewal rates benefited from higher penetration of Executive members. Our renewal rate, which excludes affiliates of Business members, is a trailing calculation that captures renewals during the period seven to eighteen months prior to the reporting date.

Effective September 1, 2024, we increased our membership fees in the U.S. and Canada for Gold Star (individual), Business, and Business affiliates to $65 per year. The Executive membership fee increased from $120 to $130 (membership fee of $65, plus Executive upgrade of $65), and the maximum annual 2% reward associated with the Executive Membership increased from $1,000 to $1,250. We account for membership fee revenue on a deferred basis, recognized ratably over one year. We expect these fee changes to increase revenues approximately $370 over the next two years, $190 of which will benefit fiscal 2025, primarily in the latter half of the year.

Gross margin percentage increased 35 basis points. Excluding the impact of gasoline price deflation on net sales, gross margin percentage was 10.88%, an increase of 31 basis points. This increase was positively impacted by: 19 basis points due to warehouse ancillary and other businesses, primarily e-commerce and gasoline; 16 basis points due to the absence of charges related to the discontinuation of our charter shipping activities that were recorded in the first and third quarters of 2023; and three basis points due to a LIFO benefit. This increase was partially offset by four basis points in our core merchandise categories and three basis points due to increased 2% rewards.

The gross margin in core merchandise categories, when expressed as a percentage of core merchandise sales (rather than total net sales), increased 11 basis points. The increase was primarily due to non-foods, partially offset by fresh foods and foods and sundries. This measure eliminates the impact of changes in sales penetration and gross margins from our warehouse ancillary and other businesses.

The following table summarizes our significant sources and uses of cash and cash equivalents:

Our primary sources of liquidity are cash flows from operations, cash and cash equivalents, and short-term investments. Cash and cash equivalents and short-term investments were $11,144 and $15,234 at September 1, 2024, and September 3, 2023. Of these balances, unsettled credit and debit card receivables represented approximately $2,519 and $2,282. These receivables generally settle within four days. Changes in foreign exchange rates impacted cash and cash equivalents positively by $40 and $15 in 2024 and 2023, and negatively by $249 in 2022.

Purchase obligations consist of contracts primarily related to merchandise, equipment, and third-party services, the majority of which are due in the next 12 months. Construction and land-purchase obligations consist of contracts primarily related to the development and opening of new and relocated warehouses, the majority of which (other than leases) are due in the next 12 months.

Net cash provided by operating activities totaled $11,339 in 2024, compared to $11,068 in 2023. Our cash flow provided by operations is primarily from net sales and membership fees. Cash flow used in operations generally consists of payments to merchandise suppliers, warehouse operating costs, including wages and employee benefits, utilities, credit and debit card processing fees, and operating leases. Cash used in operations also includes payments for income taxes. Changes in our net investment in merchandise inventories (the difference between merchandise inventories and accounts payable) is impacted by several factors, including inventory levels and turnover, payment terms with suppliers, and early payments to obtain discounts.

open up to 29 additional new warehouses, including three relocations, in 2025. There can be no assurance that current expectations will be realized, and plans are subject to change upon further review of our capital expenditure needs and the economic environment.

Net cash used in financing activities totaled $10,764 in 2024, compared to $2,614 in 2023. Cash flow used in financing activities primarily related to the payment of dividends, repayments of long-term debt and short-term borrowings, repurchases of common stock, and withholding taxes on stock-based awards. On May 18, 2024, we paid the $1,000 outstanding principal balance on the 2.750% Senior Notes, using cash and cash equivalents and short-term investments. Cash flow provided by financing activities included proceeds from short-term borrowings and four Guaranteed Senior Notes totaling approximately $500, at fixed interest rates ranging from 1.400% to 2.120%, issued by our Japan subsidiary.

Cash dividends declared in 2024 totaled $8,589 or $19.36 per share, as compared to $1,703 or $3.84 per share in 2023. Dividends in 2024 included a special dividend of $15 per share, resulting in a payment of approximately $6,655. In April 2024, the Board of Directors increased our quarterly cash dividend from $1.02 to $1.16 per share.

On January 19, 2023, the Board of Directors authorized a share repurchase program in the amount of $4,000, which expires in January 2027. During 2024 and 2023, we repurchased 1,004,000 and 1,341,000 shares of common stock, at an average price per share of $695.29 and $504.68, totaling approximately $698 and $677. These amounts may differ from the accompanying consolidated statements of cash flows due to changes in unsettled repurchases at the end of each fiscal year. Purchases are made from time to time, as conditions warrant, in the open market or in block purchases, pursuant to plans under SEC Rule 10b5-1. Repurchased shares are retired, in accordance with the Washington Business Corporation Act. The remaining amount available to be purchased under our approved plan was $2,865 at the end of 2024.

We maintain bank credit facilities for working capital and general corporate purposes. At September 1, 2024, we had borrowing capacity under these facilities of $1,198. Our international operations maintain $710 of this capacity under bank credit facilities, of which $167 is guaranteed by the Company. Short-term borrowings outstanding under the bank credit facilities, which are included in other current liabilities on the consolidated balance sheets, were immaterial at the end of 2024 and 2023.

We have letter of credit facilities, for commercial and standby letters of credit, totaling $214. The outstanding commitments under these facilities at the end of 2024 totaled $193, most of which were standby letters of credit that do not expire or have expiration dates within one year. The bank credit facilities have various expiration dates, most within one year, and we generally intend to renew these facilities. The amount of borrowings available at any time under our bank credit facilities is reduced by the amount of standby and commercial letters of credit outstanding.

In the opinion of management, we have no off-balance sheet arrangements that have had or are reasonably likely to have a material current or future effect on our financial condition or financial statements.

Claims for employee health-care benefits, workers’ compensation, general liability, property damage, directors’ and officers’ liability, vehicle liability, inventory loss, and other exposures are funded predominantly through self-insurance. Insurance coverage is maintained for certain risks to limit exposures to very large losses. We use various risk management mechanisms, including a wholly-owned captive insurance subsidiary, and participate in a reinsurance program. Liabilities associated with the risks that we retain are not discounted and are estimated using historical claims experience, demographic factors, severity factors, and other actuarial assumptions. The costs of claims are highly unpredictable and can fluctuate as a result of inflation rates, regulatory or legal changes, and unforeseen developments in claims. While we believe our estimates are reasonable, actual claims and costs could differ significantly from recorded liabilities. Historically, adjustments to our estimates have been immaterial.

Our exposure to financial market risk results from fluctuations in interest rates and foreign currency exchange rates. We do not engage in speculative or leveraged transactions or hold or issue financial instruments for trading purposes.

Our policy limits investments in the U.S. to direct U.S. government and government agency obligations, repurchase agreements collateralized by U.S. government and government agency obligations, U.S. government and government agency money market funds, and insured bank balances. Our wholly-owned captive insurance subsidiary invests in U.S. government and government agency obligations and U.S. government and government agency money market funds. Our Canadian and Other International subsidiaries’ investments are primarily in money market funds, bankers’ acceptances, and bank certificates of deposit, generally denominated in local currencies.

A 100 basis point change in interest rates as of the end of 2024 would have had an immaterial incremental change in fair market value. For those investments that are classified as available-for-sale, the unrealized gains or losses related to fluctuations in market volatility and interest rates are reflected

within stockholders’ equity in accumulated other comprehensive income in the consolidated balance sheets.

We are exposed to fluctuations in prices for energy, particularly electricity and natural gas, and other commodities used in retail and manufacturing operations, which we seek to partially mitigate through fixed-price contracts for certain of our warehouses and other facilities, predominantly in the U.S. and Canada. We also enter into variable-priced contracts for some purchases of electricity and natural gas, in addition to some of the fuel for our gas stations, on an index basis. These contracts meet the characteristics of derivative instruments, but generally qualify for the “normal purchases and normal sales” exception under authoritative guidance and require no mark-to-market adjustment.

To the Stockholders and Board of Directors

Costco Wholesale Corporation:

We have audited the accompanying consolidated balance sheets of Costco Wholesale Corporation and subsidiaries (the Company) as of September 1, 2024 and September 3, 2023, the related consolidated statements of income, comprehensive income, equity, and cash flows for each of the fiscal years in the three-year period ended September 1, 2024, and the related notes (collectively, the consolidated financial statements). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company as of September 1, 2024 and September 3, 2023, and the results of its operations and its cash flows for each of the fiscal years in the three-year period ended September 1, 2024, in conformity with U.S. generally accepted accounting principles.

These consolidated financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on these consolidated financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the consolidated financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the consolidated financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the consolidated financial statements. We believe that our audits provide a reasonable basis for our opinion.

The critical audit matter communicated below is a matter arising from the current period audit of the consolidated financial statements that was communicated or required to be communicated to the audit committee and that: (1) relates to accounts or disclosures that are material to the consolidated financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of a critical audit matter does not alter in any way our opinion on the consolidated financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.

/s/ KPMG LLP

Seattle, Washington

Basis for Opinion

Definition and Limitations of Internal Control Over Financial Reporting

Costco Wholesale Corporation (Costco or the Company), a Washington corporation, and its subsidiaries operate membership warehouses based on the concept that offering members low prices on a limited selection of nationally-branded and private-label products in a wide range of merchandise categories will produce high sales volumes and rapid inventory turnover. At September 1, 2024, Costco operated 890 warehouses worldwide: 614 in the United States (U.S.) located in 47 states, Washington, D.C., and Puerto Rico, 108 in Canada, 40 in Mexico, 35 in Japan, 29 in the U.K., 19 in Korea, 15 in Australia, 14 in Taiwan, seven in China, four in Spain, two in France, and one each in Iceland, New Zealand, and Sweden. The Company operates e-commerce sites in the U.S., Canada, the U.K., Mexico, Korea, Taiwan, Japan, and Australia.

The consolidated financial statements include the accounts of Costco and its subsidiaries. The Company reports noncontrolling interests in consolidated entities as a component of equity separate from the Company’s equity. All material inter-company transactions between and among the Company and its consolidated subsidiaries have been eliminated in consolidation. Unless otherwise noted, references to net income relate to net income attributable to Costco.

The Company operates on a 52/53-week fiscal year basis with the year ending on the Sunday closest to August 31. References to 2024 and 2022 relate to the 52-week fiscal years ended September 1, 2024 and August 28, 2022. References to 2023 relate to the 53-week fiscal year ended September 3, 2023.

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. These estimates and assumptions take into account historical and forward-looking factors that the Company believes are reasonable. Actual results could differ from those estimates and assumptions.

Reclassifications were made to the 2023 and 2022 consolidated statements of cash flows to conform with current year presentation.

The Company considers as cash and cash equivalents all cash on deposit, highly liquid investments with a maturity of three months or less at the date of purchase, and proceeds due from credit and debit card transactions with settlement terms of up to four days. Credit and debit card receivables were $2,519 and $2,282 at the end of 2024 and 2023.

Short-term investments generally consist of debt securities (U.S. government and agency securities), with maturities at the date of purchase of three months to five years. Investments with maturities beyond five

years may be classified, based on the Company’s determination, as short-term based on their highly liquid nature and because they represent the investment of cash that is available for current operations. Short-term investments classified as available-for-sale are recorded at fair value using the specific identification method with the unrealized gains and losses reflected in accumulated other comprehensive income (loss) until realized. Realized gains and losses from the sale of available-for-sale securities, if any, are determined on a specific identification basis and are recorded in interest income and other, net in the consolidated statements of income. These available-for-sale investments have a low level of inherent credit risk given they are issued by the U.S. government and agencies. Changes in their fair value are primarily attributable to changes in interest rates and market liquidity. Short-term investments classified as held-to-maturity are financial instruments that the Company has the intent and ability to hold to maturity and are reported net of any related amortization and are not remeasured to fair value on a recurring basis.

The Company periodically evaluates unrealized losses in its investment securities for credit impairment, using both qualitative and quantitative criteria. In the event a security is deemed to be impaired as the result of a credit loss, the Company recognizes the loss in interest income and other, net in the consolidated statements of income.

Fair value is defined as the price 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. Fair value is estimated by applying a fair value hierarchy, which requires maximizing the use of observable inputs when measuring fair value. The three levels of inputs are:

The Company’s valuation techniques used to measure the fair value of money market mutual funds, which are included in cash and cash equivalents, are based on quoted market prices, such as quoted net asset values published by the fund as supported in an active market. Valuation methodologies used to measure the fair value of all other non-derivative financial instruments are based on independent external valuation information. The pricing process uses data from a variety of independent external valuation information providers, including trades, bid price or spread, two-sided markets, quotes, benchmark curves including but not limited to treasury benchmarks, Secured Overnight Financing Rate and swap curves, discount rates, and market data feeds. All are observable in the market or can be derived principally from or corroborated by observable market data. The Company reports transfers in and out of Levels 1, 2, and 3, as applicable, using the fair value of the individual securities as of the beginning of the reporting period in which the transfer(s) occurred.

Current financial liabilities have fair values that approximate their carrying values. Long-term financial liabilities include the Company's long-term debt, which are recorded on the balance sheet at issuance price and adjusted for unamortized discounts or premiums and debt issuance costs. Discounts, premiums and debt issuance costs are amortized to interest expense over the term of the loan. The estimated fair value of the Company's long-term debt is based primarily on reported market values, recently completed market transactions, and estimates based upon interest rates, maturities, and credit.

Receivables consist primarily of vendor, reinsurance, credit card incentive, third-party pharmacy and other receivables. Vendor receivables include discounts and volume rebates. Balances are generally presented on a gross basis, separate from any related payable due. In certain circumstances, these receivables may be settled against the related payable to that vendor, in which case the receivables are presented on a net basis. Reinsurance receivables are held by the Company’s wholly-owned captive insurance subsidiary and primarily represent amounts ceded through reinsurance arrangements gross of the amounts assumed under reinsurance, which are presented within other current liabilities in the consolidated balance sheets. Credit card incentive receivables primarily represent amounts earned under co-branded credit card arrangements. Third-party pharmacy receivables generally relate to amounts due from members’ insurers. Other receivables primarily consist of amounts due from governmental entities, mostly tax-related items.

The valuation allowance related to receivables was immaterial to the Company's consolidated financial statements at the end of 2024 and 2023.

Merchandise inventories are stated at the lower of cost or market. U.S. merchandise inventories are valued by the cost method of accounting, using the last-in, first-out (LIFO) basis. The Company believes the LIFO method more fairly presents the results of operations by more closely matching current costs with current revenues. The Company records an adjustment each quarter, if necessary, for the projected annual effect of inflation or deflation, and these estimates are adjusted to actual results determined at year-end, after actual inflation or deflation rates and inventory levels have been determined. An immaterial LIFO benefit was recorded in 2024 and an immaterial charge was recorded in 2023. Due to inflation in 2022, a $438 charge was recorded to merchandise costs to increase the cumulative LIFO valuation on merchandise inventories at August 28, 2022. Canadian and Other International merchandise inventories are predominantly valued using the cost and retail inventory methods, respectively, using the first-in, first-out (FIFO) basis.

The Company initially provides for estimated inventory losses between physical inventory counts using estimates based on experience. The provision is adjusted periodically to reflect physical inventory counts, which generally occur in the second and fourth fiscal quarters. Inventory cost, where appropriate, is reduced by estimates of vendor rebates when earned or as the Company progresses towards earning those rebates, provided that they are probable and reasonably estimable.

Property and equipment are stated at cost. Depreciation and amortization expense is computed primarily using the straight-line method over estimated useful lives. Leasehold improvements made after the beginning of the initial lease term are depreciated over the shorter of the estimated useful life of the asset or the remaining term of the initial lease plus any renewals that are reasonably certain at the date the leasehold improvements are made.

The Company capitalizes certain computer software and costs incurred in developing or obtaining software for internal use. During development, these costs are included in construction in progress. To the

extent that the assets become ready for their intended use, these costs are included in equipment and fixtures and amortized on a straight-line basis over estimated useful lives.

Repair and maintenance costs are expensed when incurred. Expenditures for remodels, refurbishments and improvements that add to or change asset function or useful life are capitalized. Assets removed during the remodel, refurbishment or improvement are retired. Assets classified as held-for-sale at the end of 2024 and 2023 were immaterial.

The following table summarizes the Company's property and equipment balances at the end of 2024 and 2023:

The Company leases land, buildings, and/or equipment at warehouses and certain other office and distribution facilities. Leases generally contain one or more of the following options, which the Company can exercise at the end of the initial term: (a) renew the lease for a defined number of years at the then-fair market rental rate or rate stipulated in the lease agreement; (b) purchase the property at the then-fair market value or purchase price stated in the agreement; (c) a right of first refusal in the event of a third-party offer; or (d) a right of first offer if the landlord intends to sell.

Some leases include free-rent periods and step-rent provisions, which are recognized on a straight-line basis over the original term of the lease and any extension options that the Company is reasonably certain to exercise from the date the Company has control of the property. Certain leases provide for periodic rent increases based on price indices or the greater of minimum guaranteed amounts or sales volume, which are recognized as variable lease payments. The Company's leases do not contain any material residual value guarantees or material restrictive covenants.

The Company determines at inception whether a contract is or contains a lease. Non-lease components and the lease components to which they relate are accounted for together as a single lease component for all asset classes. The Company initially records right-of-use (ROU) assets and lease obligations for its

finance and operating leases based on the discounted future minimum lease payments over the term. The lease term is defined as the noncancelable period of the lease plus any options to extend when it is reasonably certain that the Company will exercise the option. As the rate implicit in the Company's leases is not easily determinable, the present value of the sum of the lease payments is calculated using the Company's incremental borrowing rate. The rate is determined using a portfolio approach based on the rate of interest the Company would pay to borrow an amount equal to the lease payments on a collateralized basis over a similar term. The Company uses quoted interest rates from financial institutions to derive the incremental borrowing rate. Impairment of ROU assets is evaluated in a similar manner as described in Property and Equipment, Net above. During 2023, the Company recognized charges totaling $391, primarily related to the impairment of certain leased assets associated with charter shipping activities. This charge is included in merchandise costs.

The Company's asset retirement obligations (ARO) primarily relate to leasehold improvements that must be removed at the end of a lease. These obligations are generally recorded as a discounted liability, with an offsetting asset at the inception of the lease term, based upon the estimated fair value of the costs to remove the improvements. These liabilities are accreted over time to the projected future value of the obligation. The ARO assets are depreciated using the same depreciation method as the leasehold improvement assets and are included in buildings and improvements. Estimated ARO liabilities associated with these leases are included in other liabilities in the consolidated balance sheet.

Goodwill represents the excess of acquisition cost over the fair value of the net assets acquired and is not subject to amortization. The Company reviews goodwill annually in the fourth quarter for impairment or when circumstances indicate carrying value may exceed the fair value. This evaluation is performed at the reporting unit level. If a qualitative assessment indicates that it is more likely than not that the fair value is less than carrying value, a quantitative analysis is completed using either the income or market approach, or a combination of both. The income approach estimates fair value based on expected discounted future cash flows, while the market approach uses comparable public companies and transactions to develop metrics to be applied to historical and expected future operating results.

Claims for employee health-care benefits, workers’ compensation, general liability, property damage, directors’ and officers’ liability, vehicle liability, inventory loss, and other exposures are funded predominantly through self-insurance. Insurance coverage is maintained for certain risks to limit exposures to very large losses. The Company uses various risk management mechanisms, including a wholly-owned captive insurance subsidiary (the captive) and participates in a reinsurance program. Liabilities associated with the risks that are retained by the Company are not discounted and are

estimated using historical claims experience, demographic factors, severity factors, and other actuarial assumptions. The estimated accruals for these liabilities could be significantly affected if future occurrences, claims, or expenses differ from these assumptions and historical trends. At the end of 2024 and 2023, these insurance liabilities were $1,612 and $1,513 in the aggregate, and were included in accrued salaries and benefits and other current liabilities in the consolidated balance sheets, classified based on their nature.

The captive receives direct premiums, which are netted against the Company’s premium costs in SG&A expenses in the consolidated statements of income. The captive participates in a reinsurance program that includes third-party participants. The participant agreements and practices of the reinsurance program are designed to limit a participating members’ individual risk. Income statement adjustments related to the reinsurance program and related impacts to the consolidated balance sheets are recognized as information becomes known. In the event the Company leaves the reinsurance program, the Company retains its primary obligation to the participants for prior activity.

The Company is exposed to fluctuations in prices for energy, particularly electricity and natural gas, and other commodity products used in retail and manufacturing operations, which it seeks to partially mitigate through the use of fixed-price contracts for certain of its warehouses and other facilities, primarily in the U.S. and Canada. The Company also enters into variable-priced contracts for some purchases of natural gas, in addition to fuel for its gas stations, on an index basis. These contracts meet the characteristics of derivative instruments, but generally qualify for the “normal purchases and normal sales” exception under authoritative guidance and require no mark-to-market adjustment.

The functional currencies of the Company’s international subsidiaries are their local currencies. Assets and liabilities recorded in foreign currencies are translated at the exchange rate on the balance sheet date. Translation adjustments are recorded in accumulated other comprehensive loss. Revenues and expenses of the Company’s consolidated foreign operations are translated at average exchange rates prevailing during the year.

The Company recognizes foreign-currency transaction gains and losses related to revaluing or settling monetary assets and liabilities denominated in currencies other than the functional currency in interest income and other, net in the consolidated statements of income. Generally, these include the U.S. dollar cash and cash equivalents and the U.S. dollar payables of consolidated subsidiaries revalued to their

functional currency. Also included are realized foreign-currency gains or losses from settlements of forward foreign-exchange contracts. These items were $64, $46 and $84 in 2024, 2023, and 2022.

The Company recognizes sales for the amount of consideration collected from the member, which includes gross shipping fees where applicable, and is net of sales taxes collected and remitted to government agencies and member returns. The Company reserves for estimated returns based on historical trends in merchandise returns and reduces sales and merchandise costs accordingly. The Company records, on a gross basis, a refund liability and an asset for recovery, which are included in other current liabilities and other current assets, respectively, in the consolidated balance sheets.

The Company offers merchandise in the following core merchandise categories: foods and sundries, non-foods, and fresh foods. The Company also provides expanded products and services through warehouse ancillary and other businesses. The Company is the principal for the majority of its transactions and recognizes revenue on a gross basis. The Company is the principal when it has control of the merchandise or service before it is transferred to the member. The majority of revenue from merchandise sales is recognized at the point of sale. Revenue generated through e-commerce or special orders is generally recognized upon shipment to the member. For merchandise shipped directly to the member, shipping and handling costs are expensed as incurred as fulfillment costs and included in merchandise costs in the consolidated statements of income. In certain ancillary businesses, revenue is deferred until the member picks up merchandise at the warehouse. Deferred sales are included in other current liabilities in the consolidated balance sheets.

The Company accounts for membership fee revenue, net of refunds, on a deferred basis, ratably over the one-year membership period. Deferred membership fees at the end of 2024 and 2023 were $2,501 and $2,337.

In most countries, the Company's Executive members qualify for a 2% reward on qualified purchases, subject to an annual maximum value, which does not expire and is redeemable at Costco warehouses. The Company accounts for this reward as a reduction in sales, net of the estimated impact of non-redemptions (breakage), with the corresponding liability classified as accrued member rewards in the consolidated balance sheets. Estimated breakage is computed based on redemption data. For 2024, 2023, and 2022, the net reduction in sales was $2,804, $2,576, and $2,307.

The Company sells and otherwise provides proprietary shop cards that do not expire and are redeemable at the warehouse or online for merchandise or membership. Revenue from shop cards is recognized upon redemption, and estimated breakage is recognized based on redemption data. The Company accounts for outstanding shop card balances as a shop card liability, net of estimated breakage. Shop card liabilities are included in other current liabilities in the consolidated balance sheets.

Citibank, N.A. is the exclusive issuer of co-branded credit cards to U.S. members. The Company receives various forms of consideration from Citibank, including a royalty on purchases made on the card outside of Costco. A portion of the royalty is used to fund the rebate that cardholders receive, after taking into consideration breakage, which is calculated based on rebate redemption data. The rebates are issued in February and expire on December 31. The Company also maintains co-branded credit card arrangements in Canada and certain other International subsidiaries.

Merchandise costs consist of the purchase price or manufacturing costs of inventory sold, inbound and outbound shipping charges and all costs related to the Company’s depot, fulfillment and manufacturing operations, and are reduced by vendor consideration. Merchandise costs also include salaries, benefits, depreciation, and utilities in fresh foods departments and certain ancillary businesses.

The Company receives funds from vendors for discounts and a variety of other programs. These programs are evidenced by agreements that are reflected in the carrying value of the inventory when earned or as the Company progresses towards earning the rebate or discount, and as a component of merchandise costs as the merchandise is sold. Other vendor consideration is generally recorded as a reduction of merchandise costs upon completion of contractual milestones, agreement terms or another systematic approach.

Selling, general and administrative expenses consist primarily of salaries, benefits and workers’ compensation costs for warehouse employees (other than fresh foods departments and certain ancillary businesses, which are reflected in merchandise costs) as well as all regional and home office employees, including buying personnel. Selling, general and administrative expenses also include substantially all building and equipment depreciation, stock compensation expense, credit and debit card processing fees, utilities, preopening, as well as other operating costs incurred to support warehouse and e-commerce operations.

The Company's 401(k) retirement plan is available to all U.S. employees over the age of 18 who have completed 90 days of employment. The plan allows participants to make wage deferral contributions, a portion of which the Company matches. In addition, the Company provides each eligible participant an annual discretionary contribution. The Company also has a defined contribution plan for employees in Canada and contributes a percentage of each employee's wages. Certain subsidiaries in the Company's Other International operations have defined benefit and defined contribution plans, which are immaterial. Amounts expensed under all plans were $963, $914, and $824 for 2024, 2023, and 2022, and are predominantly included in SG&A expenses in the consolidated statements of income.

Compensation expense for awards is predominantly recognized using the straight-line method over the requisite service period for the entire award. The terms of the RSUs, including performance-based awards, provide for accelerated vesting for employees and non-employee directors. Recipients are not entitled to vote or receive dividends on unvested and undelivered shares. Compensation expense for the accelerated shares is recognized upon achievement of the long-service term. The cumulative amount of compensation cost recognized at any point in time equals at least the portion of the grant-date fair value of the award that is vested at that date. The fair value of RSUs is calculated as the market value of the common stock on the measurement date less the present value of the expected dividends forgone during the vesting period.

The Company accounts for income taxes using the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributed to differences between the financial statement carrying amounts of existing assets and liabilities and their tax bases, credits and loss carry-forwards. Deferred tax assets and liabilities are measured using tax rates expected to apply to taxable income in the years in which those temporary differences and carry-forwards are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. A valuation allowance is established when necessary to reduce deferred tax assets to amounts that are more likely than not expected to be realized.

The timing and amounts of deductible and taxable items and the probability of sustaining uncertain tax positions requires significant judgment. The benefits of uncertain tax positions are recorded in the Company’s consolidated financial statements only after determining a more-likely-than-not probability that the uncertain tax positions will withstand challenge from tax authorities. When facts and circumstances change, the Company reassesses these probabilities and records changes as appropriate.

The computation of basic net income per share uses the weighted average number of shares that were outstanding during the period. The computation of diluted net income per share uses the weighted average number of shares in the basic net income per share calculation plus the number of common shares that would be issued assuming vesting of all potentially dilutive common shares outstanding using the treasury stock method for shares subject to RSUs.

The Company’s investments were as follows:

Gross unrecognized holding gains and losses on available-for-sale securities were immaterial for the years ended September 1, 2024, and September 3, 2023. At those dates, there were no available-for-sale securities in a material continuous unrealized-loss position. There were no sales of available-for-sale securities during 2024 or 2023.

The maturities of available-for-sale and held-to-maturity securities at the end of 2024 are as follows:

The table below presents information regarding the Company’s financial assets and liabilities that are measured at fair value on a recurring basis and indicate the level within the hierarchy reflecting the valuation techniques utilized to determine such fair value.

The Company's long-term debt consists primarily of Senior Notes, described below. The Company at its option may redeem the Senior Notes at any time, in whole or in part, at a redemption price plus accrued interest. The redemption price is equal to the greater of 100% of the principal amount or the sum of the present value of the remaining scheduled payments of principal and interest to maturity. Additionally, upon certain events, a holder has the right to require a repurchase at a price of 101% of the principal amount plus accrued and unpaid interest. Interest on all outstanding long-term debt is payable semi-annually. The estimated fair value of Senior Notes is valued using Level 2 inputs.

Other long-term debt consists of Guaranteed Senior Notes issued by the Company's Japanese subsidiary, valued using Level 3 inputs. In November 2023, the Company’s Japan subsidiary issued four Guaranteed Senior Notes, totaling approximately $500, at fixed interest rates ranging from 1.400% to 2.120%. Interest is payable semi-annually, and maturity dates range from November 7, 2033, to November 7, 2043. In July 2024, the Japanese subsidiary repaid $77 of its Guaranteed Senior Notes.

On May 18, 2024, the Company paid the $1,000 outstanding principal balance and interest on the 2.750% Senior Notes using cash and cash equivalents and short-term investments.

At the end of 2024 and 2023, the fair value of the Company's long-term debt, including the current portion, was approximately $5,412 and $5,738. The carrying value of long-term debt consisted of the following: