11-K 1 a202211-k.htm 11-K Document








UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
 
 
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FORM 11-K
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ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
                    
For the fiscal year ended December 31, 2022

TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
                    
For the transition period from ______ to _____

Commission File Number 0-20355
A. Full title of the plan and the address of the plan, if different from that of the issuer named below:
Costco 401(k) Retirement Plan
B. Name of issuer of the securities held pursuant to the plan and the address of its principal executive office:

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Costco Wholesale Corporation
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999 Lake Drive
Issaquah, Washington 98027





COSTCO 401(k) RETIREMENT PLAN
Table of Contents



Report of Independent Registered Public Accounting Firm
To the Plan Administrator and Participants of
Costco 401(k) Retirement Plan:
Opinion on the Financial Statements
We have audited the accompanying statement of net assets available for benefits of Costco 401(k) Retirement Plan (the "Plan") as of December 31, 2022, the related statement of changes in net assets available for benefits for the year then ended, and the related notes (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the net assets available for benefits of the Plan as of December 31, 2022, and the changes in net assets available for benefits for the year then ended, in conformity with accounting principles generally accepted in the United States of America.
Basis for Opinion
These financial statements are the responsibility of the Plan's management. Our responsibility is to express an opinion on the Plan's financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) ("PCAOB") and are required to be independent with respect to the Plan 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 financial statements are free of material misstatement, whether due to error or fraud. The Plan is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Plan’s internal control over financial reporting. Accordingly, we express no such opinion.
Our audits included performing procedures to assess the risks of material misstatement of the 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 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 financial statements. We believe that our audits provide a reasonable basis for our opinion.
Supplemental Information
The supplemental Schedule H, Line 4i - Schedule of Assets (Held at End of Year) as of December 31, 2022, has been subjected to audit procedures performed in conjunction with the audit of Costco 401(k) Retirement Plan’s financial statements. The supplemental schedule is the responsibility of the Plan’s management. Our audit procedures included determining whether the information presented in the supplemental schedule reconciles to the financial statements or the underlying accounting and other records, as applicable, and performing procedures to test the completeness and accuracy of the information presented in the supplemental schedule. In forming our opinion on the supplemental schedule, we evaluated whether the supplemental schedule, including its form and content, is presented in conformity with the Department of Labor’s Rules and Regulations for Reporting and Disclosure under the Employee Retirement Income Security Act of 1974. In our opinion, the supplemental schedule is fairly stated in all material respects in relation to the financial statements as a whole.
/s/ Crowe LLP
Oak Brook, Illinois
June 29, 2023
We have served as the Plan's auditor since 2023.


1

Report of Independent Registered Public Accounting Firm

To the Plan Administrator and Participants of
Costco 401(k) Retirement Plan:
Opinion on the Financial Statement
We have audited the accompanying statement of net assets available for benefits of the Costco 401(k) Retirement Plan (the "Plan") as of December 31, 2021, and the related notes (collectively referred to as the "financial statement"). In our opinion, the financial statement presents fairly, in all material respects, the net assets available for benefits of the Plan as of December 31, 2021, in conformity with accounting principles generally accepted in the United States of America.
Basis for Opinion
This financial statement is the responsibility of the Plan’s management. Our responsibility is to express an opinion on the Plan’s financial statement based on our audit. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) ("PCAOB") and are required to be independent with respect to the Plan 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 audit 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 financial statement is free of material misstatement, whether due to error or fraud. The Plan is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audit we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Plan’s internal control over financial reporting. Accordingly, we express no such opinion.
Our audit included performing procedures to assess the risks of material misstatement of the financial statements whether due to error or fraud, and performing procedures to respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statement. Our audit also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statement. We believe that our audit provides a reasonable basis for our opinion.
/s/ Moss Adams LLP
Seattle, Washington
June 28, 2022
We served as the Plan’s auditor from 2020 through 2022.

2

COSTCO 401(k) RETIREMENT PLAN
Statements of Net Assets Available for Benefits
December 31, 2022 and 2021
(in thousands)

20222021
Assets:
Investments at fair value$23,048,193 $28,855,019 
Investments at contract value:
Fully benefit-responsive investment contracts1,849,278 1,618,026 
Total investments24,897,471 30,473,045 
Receivables:
Notes receivable from participants514,605 472,585 
Employer contributions499,820 442,793 
Total receivables1,014,425 915,378 
Non-interest bearing cash1,066 2,119 
Net assets available for benefits$25,912,962 $31,390,542 






























See accompanying notes to financial statements.
3

COSTCO 401(k) RETIREMENT PLAN
Statement of Changes in Net Assets Available for Benefits
Year Ended December 31, 2022
(in thousands)

2022
Net investment loss:
Net depreciation of investments$(5,657,120)
Interest35,775 
Dividends152,167 
Total net investment loss(5,469,178)
Interest on notes receivable from participants23,892 
Contributions to the Plan:
Employee965,106 
Employer579,044 
Total contributions1,544,150 
Distributions to participants and other(1,576,444)
Decrease in net assets(5,477,580)
Net assets available for benefits, beginning of year31,390,542 
Net assets available for benefits, end of year$25,912,962 
































See accompanying notes to financial statements.
4

COSTCO 401(k) RETIREMENT PLAN
Notes to Financial Statements
December 31, 2022 and 2021
(1)Plan Description
The following description of the Costco 401(k) Retirement Plan (the Plan) provides only general information. Participants should refer to the Plan document for a more complete description of the Plan. To participate in the Plan, an individual must be an employee of Costco Wholesale Corporation (the Company or Costco) or certain subsidiaries.
The Plan is a defined contribution plan for the benefit of eligible employees, established by the Company under Section 401(a) of the Internal Revenue Code (IRC). It includes a qualified cash or deferred arrangement as described in Section 401(k). The Plan is also subject to the provisions of the Employee Retirement Income Security Act of 1974 (ERISA), as amended.
(a)Employee Contributions
The Plan allows certain employees at least 18 years of age to make salary deferral contributions after completing 90 days of service within 12-consecutive months. Eligible employees may contribute from 1% to 50% of their compensation, subject to certain limitations set by the IRC and the Plan. Eligible employees may also contribute amounts representing certain distributions from other retirement plans (rollover contributions).
All newly-eligible participants entering the Plan after April 1, 2022, are automatically enrolled in the Plan at a salary contribution rate of 4%, up from 3%. On an active participant’s employment anniversary date and each anniversary date thereafter the percentage deferred into the Plan automatically increases by one percentage point, to a maximum of 20%. Employees may opt out of automatic enrollment and increases. Contributions are subject to regulatory requirements.
(b)Employer Contributions
Company contributions are invested in accordance with selections made by participants. If no selection has been made, the contribution defaults to the Retirement Trust Fund corresponding to the participant's age. Employer contributions are allocated based on an employee’s classification as either: covered by the collective bargaining agreements with the International Brotherhood of Teamsters; or other eligible employment.
(1)    Covered by the Teamsters Agreements
The Company matched 50% of each employee’s contribution up to a maximum of $250 during 2022. Eligible employees at least 18 years of age who have completed one year of service (12 consecutive months) are eligible for an annual employer contribution and Plan entry dates for the employer contribution are January 1 and July 1. The annual employer contribution is allocated only to the accounts of eligible Plan participants who are employed on the last day of the applicable Plan year. The allocation rate varies, based on years of service, ranging from $0.05 to $0.47 per straight-time hour worked during the Plan year, up to a maximum of 2,080 hours. This annual contribution was $6.2 million for the year ended December 31, 2022, and was deposited into the Plan and allocated to participant accounts in March 2023. Starting in 2023, the Company no longer matches employee's contribution.



5

COSTCO 401(k) RETIREMENT PLAN
Notes to Financial Statements (Continued)
December 31, 2022 and 2021
(2)    Other eligible employment
The Company matches 50% of each employee’s contribution up to a maximum of $500 per year. In addition, eligible employees at least 18 years of age who have completed one year of service (12 consecutive months) are eligible for an annual discretionary employer contribution and Plan entry dates for the discretionary contribution are January 1 and July 1. The discretionary contribution is allocated only to the accounts of eligible Plan participants who are employed on the last day of the applicable Plan year. The allocation rate varies, based on years of service, ranging from 4% to 9% of the participant's compensation. This discretionary contribution was $493.6 million for the year ended December 31, 2022, and was deposited into the Plan and allocated to participant accounts in March 2023.
(c)Participants’ Accounts
Each participant’s account is credited or debited with the participant’s contributions, the Company’s contributions, earnings and losses, fees, expenses, and changes in underlying account assets. The benefit to which a participant is entitled is the vested account balance.
(d)Vesting
Participants are immediately vested in their deferral contributions and in certain other contributions as defined in the Plan document, adjusted for investment experience, fees and expenses. Vesting in any form of employer contribution is based on the following schedule:
Years of servicePercentage vested
Under 2 years0%
2 years20%
3 years40%
4 years60%
5 years100%
(e)Forfeitures
If a participant terminates employment, the non-vested portion of the account balance is forfeited. Forfeited amounts are used to reduce future employer contributions or to pay administrative expenses. Forfeitures were immaterial during 2022. There were no unallocated forfeitures as of December 31, 2022 and 2021, after consideration of forfeitures used to reduce the employer contributions funded subsequent to each year. Forfeitures are restored to a participant’s account if within five years the participant is re-hired and repays the vested account balance distributed upon termination.
(f)Investment Options
Participants may direct funds in their account to the Plan's available options. Participants may transfer amounts between investment options daily, subject to certain trading restrictions. Before 2016, participants could invest 100% of their account in Costco stock; starting January 2016, the Plan has a 50% limit on investment in Costco stock, applied prospectively.
Amounts may be temporarily invested in a cash account prior to investment in the Plan’s investment accounts. See Notes 2, 3 and 4 for additional information regarding the Plan's investments.

6

COSTCO 401(k) RETIREMENT PLAN
Notes to Financial Statements (Continued)
December 31, 2022 and 2021
(g)Distributions
Upon termination of employment, total disability, reaching age 59-1/2 or death, a participant (or participant's beneficiary in the case of death) can request a full, partial or, in certain circumstances, installment or rollover distribution for the vested portion of the account. Participants are also eligible to withdraw a portion of the salary-deferral contribution account in the event of certain financial hardships.
Dividends on the Company's stock are reinvested in the participant’s Company stock account unless a distribution is requested by the participant. These dividends are reported on a gross basis, with total dividends reported as "Dividends" and the amounts distributed reported as "Distributions to participants and other" in the statement of changes in net assets available for benefits.
(h)Notes Receivable from Participants
A participant may borrow between $1,000 up to the lesser of $50,000 or 45% of their vested account balance, reduced by the highest outstanding balance in the previous 12 months minus the outstanding balance of all loans on the date on which the loan is made, provided this amount is available in the participant's pre-tax and rollover accounts. Loans are repaid through payroll deductions over a period ranging up to four years or, if for the purchase of a principal residence, up to 15 years. The bi-weekly re-payment amount cannot exceed 25% of the participant's net pay. The interest rate is determined by the Plan Administrator from time-to-time and is comparable to rates charged by commercial lenders. At December 31, 2022, interest rates on loans outstanding ranged from 4.25% to 10.25%, with various maturities through December 2037. Participant accounts with loans are charged an application fee at initiation and an annual maintenance fee.
(i)Trustee and Plan Administrator
T. Rowe Price Trust Company is the trustee and recordkeeper for the Plan, and the Costco Benefits Committee is the Plan Administrator.
(j)Administrative and Investment Expenses
Certain administrative expenses, including investment management and transaction fees, are paid by the Plan, subject to subparagraph (e) above. All other administrative expenses are paid by the Company.
(2)Summary of Significant Accounting Policies
(a)Basis of Accounting
The financial statements of the Plan are prepared under the accrual method of accounting. As required under U.S. generally accepted accounting principles (U.S. GAAP), fully benefit-responsive investment contracts (FBRIC) are reported at contract value (see Note 3), while all other investments in the Plan are reported at fair value (see Note 4). A benefit-responsive investment contract is a contract with a financial institution or an insurance company that provides for a stated return on principal invested over a specified period and permits withdrawals at contract value for benefit payments, loans, or transfers to other investment options offered to the participant by the Plan. Contract value is the amount participants would receive if they were to initiate permitted transactions under the terms of the Plan.
7

COSTCO 401(k) RETIREMENT PLAN
Notes to Financial Statements (Continued)
December 31, 2022 and 2021
(b)Use of Estimates
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 income and expenses during the reporting period. Actual results could differ from those estimates and assumptions.
(c)Investment Valuation and Income Recognition
The Plan invests in the Company’s common stock, common commingled trust funds and other exchange-traded equity securities held in separately managed accounts, as well as registered investment companies and a FBRIC.
Investments, other than the FBRIC, are reported at fair value. If available, quoted market prices are used to value investments. The FBRIC consists of the Capital Preservation Portfolio (CPP), which is invested in synthetic guaranteed investment contracts and is recorded at contract value. Contract value represents contributions made under each contract, plus earnings, less participant withdrawals and administrative expenses.
There are no reserves against contract value for credit risk of the contract issuer or otherwise. The crediting interest rate is based on a formula agreed upon with the issuer, but may not be less than zero. Such interest rates are reviewed on a quarterly basis for resetting. Certain events may limit the ability of the Plan to transact at contract value with the issuer. Events may include, but are not limited to, Plan termination, bankruptcy of the Company, or defunction of the trustee. In addition, certain events allow the issuer to terminate the contract with the Plan and settle at an amount different from contract value. Examples of such events include the following: (1) an uncured violation of the Plan’s investment guidelines, (2) a breach of material obligation under the contract, (3) a material misrepresentation, or (4) a material amendment to the agreements without the consent of the issuer. The Plan Administrator believes at this time that any events that would limit the Plan’s ability to transact at contract value with participants or that allow the issuer to terminate the contract with the Plan are not probable.
Purchases and sales of securities are recorded on a trade-date basis. Interest income is recorded on an accrual basis. Dividends are recorded on the ex-dividend date. Net appreciation or depreciation of investments includes the change in the fair value of assets from one period to the next, plus realized gains and losses.
Investment securities are exposed to various risks, such as interest rate, credit, and overall market volatility. Changes in the values of investment securities could occur, and those changes could materially affect the amounts reported in the statements of net assets available for benefits and participant account balances.
(d)Notes Receivable from Participants
Participant loans are classified as notes receivable from participants, which are segregated from Plan investments and measured at their unpaid principal balance plus any accrued but unpaid interest. Delinquent notes receivable are reclassified as distributions based upon the terms of the Plan document.
(e)Distribution of Benefits
Distributions of benefits are recorded when paid.

8

COSTCO 401(k) RETIREMENT PLAN
Notes to Financial Statements (Continued)
December 31, 2022 and 2021
(f)     Subsequent Events
The Plan monitors significant events occurring after the statement of net assets available for benefits date and prior to the issuance of the financial statements to determine the impacts, if any, on the financial statements to be issued. The Plan has evaluated subsequent events through the date which the financial statements are issued.
(3)Fully Benefit-Responsive Investment Contract
The CPP is invested in synthetic guaranteed investment contracts, which consist of a portfolio of underlying assets owned by the Plan and wrap contracts issued by an insurance company and a financial institution. The issuers of the wrap contracts provide for unscheduled withdrawals from the contracts at contract value, regardless of the value of the underlying assets, in order to fund routine withdrawals.
(4)Fair Value Measurement
U.S. GAAP defines fair value 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. The three levels of inputs are:
Level 1: Quoted market prices in active markets for identical assets or liabilities.
Level 2: Observable market-based inputs or unobservable inputs that are corroborated by market data.
Level 3: Significant unobservable inputs that are not corroborated by market data.
The asset or liability's fair value measurement level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement. Valuation techniques maximize the use of relevant observable inputs and minimize the use of unobservable inputs. Valuation techniques utilized during the reporting period were not changed from previous practice. The following is a description of the valuation methodologies used for assets measured at fair value.
Common stock, underlying securities in separately managed accounts, and registered investment company funds: These investments are deemed to be actively traded and are valued at the closing price reported in the active market in which the individual securities are traded. These assets are valued using Level 1 inputs. Mutual funds held by the Plan are open-end mutual funds that are registered with the U.S. Securities and Exchange Commission. Separately managed accounts largely consist of common stock and a collective trust as of December 31, 2022.
Common commingled trust funds: The valuation techniques used to measure the fair value of common commingled trust funds are based on quoted market prices, such as quoted net asset values (NAV) published by the fund as supported in an active market. Plan participant transactions of investment or withdrawals may occur on a daily basis in these trusts. These assets are valued using Level 1 inputs.
9

COSTCO 401(k) RETIREMENT PLAN
Notes to Financial Statements (Continued)
December 31, 2022 and 2021
The tables below present information regarding investments that are measured at fair value on a recurring basis and indicate the level within the hierarchy reflecting the valuation techniques utilized to determine fair value as of December 31, 2022 and 2021.
December 31, 2022:Level 1
(in 000's)
Investments, at fair value:
Costco Wholesale Corporation common stock$11,486,680 
Common commingled trust funds7,865,744 
Separately managed accounts2,171,053 
Registered investment company funds1,524,716 
Total investments in fair value hierarchy$23,048,193 
December 31, 2021:Level 1
(in 000's)
Investments, at fair value:
Costco Wholesale Corporation common stock$14,917,808 
Common commingled trust funds7,798,371 
Separately managed accounts3,810,457 
Registered investment company funds2,328,383 
Total investments in fair value hierarchy$28,855,019 
(5)Plan Termination
Although it has no present intent to do so, the Company has the right under the Plan to discontinue its contributions at any time and to terminate the Plan, subject to ERISA and the requirements of the collective bargaining agreements with the International Brotherhood of Teamsters. In the event of termination, participants will become 100% vested in their accounts.
(6)Commitments and Contingencies
On June 23, 2020, a putative class action was filed against the Company, the "Board of Directors," the "Costco Benefits Committee" and others under the Employee Retirement Income Security Act, in the United States District Court for the Eastern District of Wisconsin. Dustin S. Soulek v. Costco Wholesale, et al., Case No. 20-cv-937. The class was alleged to be beneficiaries of the Costco 401(k) plan from June 23, 2014, and the claims were that the defendants breached their fiduciary duties in the operation and oversight of the plan. The complaint sought injunctive relief, damages, interest, costs, and attorneys' fees. On September 11, 2020, the defendants filed a motion to dismiss the complaint, and on September 21, 2020, the plaintiffs filed an amended complaint, which the defendants moved to dismiss. On March 17, 2022, the court granted preliminary approval of a class-wide settlement, under which the Company would pay an immaterial amount. On July 18, 2022, the Court granted final approval of the settlement.
10

COSTCO 401(k) RETIREMENT PLAN
Notes to Financial Statements (Continued)
December 31, 2022 and 2021
(7)Tax Status
In a determination letter dated June 9, 2017, the IRS informed the Company that the Plan is designed in accordance with applicable sections of the IRC. The Plan has been restated and amended since receiving the determination letter. The Plan Administrator believes that the Plan is designed and is being operated in compliance with the IRC.
U.S. GAAP requires the Plan Administrator to evaluate tax positions taken by the Plan and recognize a tax liability (or asset) if the Plan has taken an uncertain position that more likely than not would not be sustained upon examination by the IRS. The Plan Administrator has concluded that as of December 31, 2022, there are no uncertain positions taken or expected to be taken that would require recognition of a liability (or asset) or disclosure in the financial statements. The Plan is subject to routine audits by taxing jurisdictions; there are currently no audits in progress.
(8)Party-in-Interest and Related Party Transactions
Certain Plan investments are shares of registered investment companies, fully benefit-responsive investment contracts, and common commingled trust funds managed by T. Rowe Price Trust Company. T. Rowe Price is also the trustee and recordkeeper as defined by the Plan, therefore these transactions qualify as exempt party-in-interest transactions.
As the Plan sponsor, the Company is a party-in-interest with respect to the Plan. As of December 31, 2022 and 2021, the Plan held 25,162,000 and 26,278,000 shares of Costco common stock. During 2022, 515,000 shares were purchased and 1,631,000 shares were sold.


11

COSTCO 401(k) RETIREMENT PLAN
Schedule H, Line 4i - Schedule of Assets (Held at End of Year)
EIN: 91-1223280 Plan #: 002
December 31, 2022
(in thousands)
(a) (b) Identity of issuer, borrower,
lessor, or similar party
(c) Description of investment(d) Cost(e) Current value
Registered investment company and common commingled trust funds:
Capital GroupNew Perspective Trust U3**$394,619 
PIMCOIncome Institutional **449,412 
* T. Rowe PriceRetirement Balanced Trust J**29,890 
* T. Rowe PriceTRP Ret 2005 Active Trust J**19,819 
* T. Rowe PriceTRP Ret 2010 Active Trust J**35,787 
* T. Rowe PriceTRP Ret 2015 Active Trust J**113,260 
* T. Rowe PriceTRP Ret 2020 Active Trust J**352,052 
* T. Rowe PriceTRP Ret 2025 Active Trust J**689,157 
* T. Rowe PriceTRP Ret 2030 Active Trust J**890,204 
* T. Rowe PriceTRP Ret 2035 Active Trust J**823,832 
* T. Rowe PriceTRP Ret 2040 Active Trust J**937,873 
* T. Rowe PriceTRP Ret 2045 Active Trust J**1,057,983 
* T. Rowe PriceTRP Ret 2050 Active Trust J**697,718 
* T. Rowe PriceTRP Ret 2055 Active Trust J**825,060 
* T. Rowe PriceTRP Ret 2060 Active Trust J**351,739 
* T. Rowe PriceTRP Ret 2065 Active Trust J**39,146 
* T. Rowe PriceTRP Ret 2020 Active Trust-Income J**3,277 
VanguardExtended Market Index Institutional**51,114 
VanguardTotal International Stock Index Institutional **56,479 
VanguardTotal Bond Market Index Fund Institutional **112,186 
VanguardInstitutional Index, Plus **855,525 
WellingtonCIF II Growth S5**604,328 
Total registered investment company and common commingled trust funds9,390,460 
Separately managed accounts:
Mid-Cap Growth Portfolio:
Acadia Healthcare Co Inc.Common Stock**14,237 
Agilent Technologies Inc.Common Stock**29,571 
Agilon Health Inc.Common Stock**911 
Alnylam Pharmaceuticals Inc.Common Stock**16,421 
Amphenol Corp - Class ACommon Stock**8,994 
Apellis Pharmaceuticals Inc.Common Stock**2,238 
Assurant Inc.Common Stock**11,913 
Atlassian Corp - Class ACommon Stock**4,459 
Avantor Inc.Common Stock**16,198 
Avery Dennison Corp.Common Stock**14,820 
Ball Corp.Common Stock**16,561 
Bath & Body Works Inc.Common Stock**7,284 
Bill Holdings Inc.Common Stock**3,525 
Black Knight Inc.Common Stock**10,360 
Boston Beer Company Inc - Class ACommon Stock**5,212 
Bright Horizons Family Solutions Inc.Common Stock**4,637 
Broadridge Financial Solutions, Inc.Common Stock**6,375 
Bruker Corp.Common Stock**20,270 
Burlington Stores Inc.Common Stock**24,315 
BWX Technologies Inc.Common Stock**4,349 
12

COSTCO 401(k) RETIREMENT PLAN
Schedule H, Line 4i – Schedule of Assets (Held at End of Year) (Continued)
December 31, 2022
(in thousands)

(a) (b) Identity of issuer, borrower,
lessor, or similar party
(c) Description of investment(d) Cost(e) Current value
Casey's General Stores Inc.Common Stock**12,119 
Catalent Inc.Common Stock**10,030 
Cboe Global Markets Inc.Common Stock**3,796 
CCC Intelligent Solutions Holdings Inc.Common Stock**5,595 
Cheniere Energy Inc.Common Stock**7,786 
Chipotle Mexican Grill Inc.Common Stock**5,957 
Clear Secure Inc - Class ACommon Stock**1,999 
Cognex Corp.Common Stock**5,061 
Confluent Inc - Class ACommon Stock**955 
Cooper Cos Inc/TheCommon Stock**17,169 
Corning Inc.Common Stock**3,435 
Costar Group Inc.Common Stock**12,362 
Coterra Energy Inc.Common Stock**4,821 
Crowdstrike Holdings Inc - Class ACommon Stock**8,433 
Dentsply Sirona Inc.Common Stock**3,443 
Devon Energy Corp.Common Stock**3,995 
Dollar General Corp.Common Stock**15,441 
Dollar Tree Inc.Common Stock**12,259 
Domino's Pizza Inc.Common Stock**11,241 
Doximity Inc - Class ACommon Stock**2,879 
Enovis Corp.Common Stock**6,852 
Equifax Inc.Common Stock**16,942 
Esab Corp.Common Stock**6,484 
Exact Sciences Corp.Common Stock**3,110 
Fair Isaac Corp.Common Stock**11,774 
Five BelowCommon Stock**8,424 
Fleetcor Technologies Inc.Common Stock**13,884 
Fortinet Inc.Common Stock**16,886 
Fortive Corp.Common Stock**16,783 
Hashicorp Inc - Class ACommon Stock**587 
Hilton Worldwide Holdings Inc.Common Stock**18,270 
Hologic Inc.Common Stock**37,222 
Hunt (JB) Transport Services, Inc.Common Stock**18,733 
ICU Medical Inc.Common Stock**5,928 
Idex Corp.Common Stock**9,804 
Ingersoll-Rand Inc.Common Stock**26,952 
Intercontinental Exchange Inc.Common Stock**9,004 
Ionis Pharmaceuticals Inc.Common Stock**6,875 
Karuna Therapeutics Inc.Common Stock**2,118 
Kemper Corp.Common Stock**2,525 
Keysight Technologies Inc.Common Stock**19,319 
KKR & Co Inc.Common Stock**13,196 
KLA Corp.Common Stock**17,947 
Lattice Semiconductor Corp.Common Stock**6,692 
Leidos Holdings Inc.Common Stock**3,393 
Liberty Media Corp., Series CCommon Stock**12,290 
Littelfuse Inc.Common Stock**2,001 
13

COSTCO 401(k) RETIREMENT PLAN
Schedule H, Line 4i – Schedule of Assets (Held at End of Year) (Continued)
December 31, 2022
(in thousands)

(a) (b) Identity of issuer, borrower,
lessor, or similar party
(c) Description of investment(d) Cost(e) Current value
Lululemon Athletica Inc.Common Stock**2,527 
Marketaxess Holdings Inc.Common Stock**11,974 
Martin Marietta MaterialsCommon Stock**12,860 
Marvell Technology Inc.Common Stock**19,625 
Match Group Inc.Common Stock**2,229 
MGM Resorts InternationalCommon Stock**15,225 
Microchip Technology Inc.Common Stock**33,985 
Mobileye Global Inc - Class ACommon Stock**741 
Molina Healthcare Inc.Common Stock**7,254 
MongoDB Inc.Common Stock**2,103 
National Instruments Corp.Common Stock**6,433 
O'Reilly Automotive Inc.Common Stock**10,872 
Palo Alto Networks Inc.Common Stock**1,811 
Paylocity Holding Corp.Common Stock**7,138 
Pioneer Natural Resources Co.Common Stock**13,851 
PTC Inc.Common Stock**9,026 
Quidelortho Corp.Common Stock**7,464 
Raymond James Financial Inc.Common Stock**4,566 
Reynolds Consumer Products Inc.Common Stock**5,143 
Rivian Automotive Inc - Class ACommon Stock**1,774 
Roper Technologies Inc.Common Stock**12,210 
Ross Stores Inc.Common Stock**6,548 
RPM International Inc.Common Stock**8,553 
Seagen Inc.Common Stock**4,401 
Sealed Air Corp.Common Stock**11,475 
Shoals Technologies Group - Class ACommon Stock**2,653 
Southwest Airlines Co.Common Stock**13,105 
Synopsys Inc.Common Stock**14,713 
Teleflex Inc.Common Stock**28,029 
Textron Inc.Common Stock**28,461 
Trade Desk Inc/The - Class ACommon Stock**12,798 
Tradeweb Markets Inc - Class ACommon Stock**10,166 
TransunionCommon Stock**8,579 
Treehouse Foods Inc.Common Stock**5,939 
United Rentals Inc.Common Stock**6,104 
Vail Resorts Inc.Common Stock**5,664 
Veeva Systems Inc - Class ACommon Stock**13,986 
Venture Global LNG, Inc., Series BCommon Stock**650 
Venture Global LNG, Inc., Series CCommon Stock**4,314 
Verisk Analytics Inc.Common Stock**10,728 
West Pharmaceutical ServicesCommon Stock**8,169 
Yum! Brands Inc.Common Stock**4,310 
Alcon Inc.Foreign Stock**9,329 
Argenx SE - ADRForeign Stock**5,722 
Ascendis Pharma A/S - ADRForeign Stock**3,134 
Axis Capital Holdings Ltd.Foreign Stock**8,389 
Crispr Therapeutics AGForeign Stock**1,669 
14

COSTCO 401(k) RETIREMENT PLAN
Schedule H, Line 4i – Schedule of Assets (Held at End of Year) (Continued)
December 31, 2022
(in thousands)

(a) (b) Identity of issuer, borrower,
lessor, or similar party
(c) Description of investment(d) Cost(e) Current value
Horizon Therapeutics PLCForeign Stock**9,772 
NXP Semiconductors N.V.Foreign Stock**1,704 
On Holding AG - Class AForeign Stock**1,100 
Spotify Technology SAForeign Stock**4,588 
Waste Connections Inc.Foreign Stock**4,593 
Databricks, Series H ConvertiblePreferred Stock**592 
Caris Life, Series D ConvertiblePreferred Stock**836 
Maplebear Dba Instacart, Series E ConvertiblePreferred Stock**1,082 
Nuro, Series D ConvertiblePreferred Stock**472 
Redwood Materials, Series C ConvertiblePreferred Stock**1,254 
Sila Nanotechnologies, Inc., Series F ConvertiblePreferred Stock**1,065 
Collective US Govt Short-Term Investment Fund 5 BpsBond**1,053 
Canadian DollarCurrency**36 
* T. Rowe Price Treasury Reserve FundMoney Market Securities**24,866 
Large Cap Value Portfolio:
Abbvie Inc.Common Stock**4,732 
Activision Blizzard Inc.Common Stock**1,631 
Allstate Corp.Common Stock**3,162 
Alphabet Inc - Class CCommon Stock**8,525 
Ameren CorporationCommon Stock**1,481 
American Electric PowerCommon Stock**2,512 
American International GroupCommon Stock**2,457 
AmerisourceBergen Corp.Common Stock**2,270 
Ametek Inc.Common Stock**1,019 
Amgen Inc.Common Stock**2,144 
Applied Materials Inc.Common Stock**2,036 
Bank of America Corp.Common Stock**11,719 
Becton, Dickinson and Co.Common Stock**10,706 
Berkshire Hathaway Inc - Class BCommon Stock**7,472 
Booking Holdings Inc.Common Stock**48 
Booz Allen Hamilton HoldingsCommon Stock**177 
Boston Properties Inc.Common Stock**397 
Broadcom Inc.Common Stock**5,461 
Centene Corp.Common Stock**4,178 
Chevron Corp.Common Stock**6,255 
Citigroup Inc.Common Stock**1,734 
Coca-Cola Co/TheCommon Stock**1,678 
ConocophillipsCommon Stock**834 
Constellation Brands Inc - Class ACommon Stock**614 
Corebridge Financial Inc.Common Stock**1,013 
CSX Corp.Common Stock**4,514 
Cummins Inc.Common Stock**362 
Danaher Corp.Common Stock**2,198 
Dollar General Corp.Common Stock**3,068 
Dominion Energy Inc.Common Stock**1,256 
15

COSTCO 401(k) RETIREMENT PLAN
Schedule H, Line 4i – Schedule of Assets (Held at End of Year) (Continued)
December 31, 2022
(in thousands)

(a) (b) Identity of issuer, borrower,
lessor, or similar party
(c) Description of investment(d) Cost(e) Current value
Dover Corp.Common Stock**728 
DTE Energy CompanyCommon Stock**1,491 
Elevance Health Inc.Common Stock**14,340 
Equity Lifestyle PropertiesCommon Stock**831 
Exxon Mobil Corp.Common Stock**11,513 
Fidelity National Information Services, Inc.Common Stock**1,182 
Firstenergy Corp.Common Stock**2,121 
Fiserv Inc.Common Stock**5,722 
GE Healthcare TechnologyCommon Stock**419 
General Electric Co.Common Stock**6,457 
Goldman Sachs Group Inc.Common Stock**2,598 
Hartford Financial Service Group, Inc.Common Stock**2,503 
HCA Healthcare Inc.Common Stock**4,408 
Home Depot Inc.Common Stock**3,616 
Honeywell International Inc.Common Stock**3,754 
Hubbell Inc.Common Stock**1,751 
Humana Inc.Common Stock**2,193 
International Flavors & Fragrances, Inc.Common Stock**1,879 
Johnson & JohnsonCommon Stock**12,862 
JPMorgan Chase & Co.Common Stock**9,917 
Keurig Dr Pepper Inc.Common Stock**2,405 
Kimberly-Clark Corp.Common Stock**1,527 
Kinder Morgan Inc.Common Stock**3,776 
Kraft Heinz Co/TheCommon Stock**4,187 
KLA Corp.Common Stock**5,921 
L3Harris Technologies Inc.Common Stock**6,104 
Lam Research Corp.Common Stock**2,176 
McDonald's Corp.Common Stock**6,624 
Merck & Co., Inc.Common Stock**3,137 
MetLife Inc.Common Stock**6,255 
Micron Technology Inc.Common Stock**2,139 
Microsoft Corp.Common Stock**1,633 
Mondelez International Inc - Class ACommon Stock**6,799 
Norfolk Southern Corp.Common Stock**3,097 
Northrop Grumman Corp.Common Stock**1,901 
Perkinelmer Inc.Common Stock**1,717 
Philip Morris InternationalCommon Stock**9,545 
Procter & Gamble Co/TheCommon Stock**6,815 
Progressive Corp.Common Stock**6,892 
Prologis Inc.Common Stock**3,879 
Republic Services Inc.Common Stock**1,524 
Ross Stores Inc.Common Stock**1,356 
Sempra EnergyCommon Stock**3,773 
Sherwin-Williams Co/TheCommon Stock**1,748 
Southern Co/TheCommon Stock**12,028 
Texas Instruments Inc.Common Stock**3,141 
The Cigna GroupCommon Stock**1,684 
16

COSTCO 401(k) RETIREMENT PLAN
Schedule H, Line 4i – Schedule of Assets (Held at End of Year) (Continued)
December 31, 2022
(in thousands)

(a) (b) Identity of issuer, borrower,
lessor, or similar party
(c) Description of investment(d) Cost(e) Current value
Thermo Fisher Scientific Inc.Common Stock**4,127 
TJX Companies Inc.Common Stock**1,950 
Travelers Cos Inc/TheCommon Stock**8,449 
Ulta Beauty Inc. Common Stock**2,288 
Union Pacific Corp.Common Stock**2,082 
UnitedHealth Group Inc.Common Stock**1,347 
U.S. BancorpCommon Stock**3,734 
Verizon Communications Inc.Common Stock**3,918 
Walmart Inc.Common Stock**6,556 
Walt Disney Co/TheCommon Stock**2,525 
WEC Energy Group Inc.Common Stock**532 
Wells Fargo & Co.Common Stock**6,532 
Weyerhaeuser Co.Common Stock**1,854 
Xcel Energy Inc.Common Stock**1,041 
Yum! Brands Inc.Common Stock**1,833 
Accenture PLC - Class AForeign Stock**1,381 
Astrazeneca PLC - Sponsored ADRForeign Stock**5,480 
Chubb Ltd.Foreign Stock**7,668 
Eaton Corporation PLCForeign Stock**6,089 
Nutrien Ltd.Foreign Stock**3,809 
Siemens AGForeign Stock**1,811 
TE Connectivity Ltd.Foreign Stock**1,063 
Collective US Govt Short-Term Investment Fund 5 BpsBond**811 
CashCash**
* T. Rowe Price Government Reserve Fund
Money Market Securities**5,312 
Small-Cap Core Portfolio:
Adaptive BiotechnologiesCommon Stock**124 
Agilysys Inc.Common Stock**1,798 
Agios Pharmaceuticals Inc.Common Stock**668 
Air Lease Corp.Common Stock**1,891 
Alignment Healthcare Inc.Common Stock**1,077 
Allegiant Travel Co.Common Stock**1,371 
Amplitude Inc - Class ACommon Stock**640 
Apellis Pharmaceuticals Inc.Common Stock**2,840 
Arvinas Inc.Common Stock**428 
Assurant Inc.Common Stock**3,339 
Atricure Inc.Common Stock**1,324 
Avid Bioservices Inc.Common Stock**1,203 
AZZ Inc.Common Stock**2,393 
Bankunited Inc.Common Stock**2,534 
Beacon Roofing Supply Inc.Common Stock**1,774 
Bellring Brands Inc.Common Stock**3,040 
BJ's Restaurants Inc.Common Stock**1,588 
Blackline Inc.Common Stock**2,102 
Blue Foundry Bancorp.Common Stock**510 
Blueprint Medicines Corp.Common Stock**1,612 
17

COSTCO 401(k) RETIREMENT PLAN
Schedule H, Line 4i – Schedule of Assets (Held at End of Year) (Continued)
December 31, 2022
(in thousands)

(a) (b) Identity of issuer, borrower,
lessor, or similar party
(c) Description of investment(d) Cost(e) Current value
Booz Allen Hamilton HoldingsCommon Stock**1,214 
Boston Beer Company Inc - Class ACommon Stock**3,889 
Bright Horizons Family SolutionsCommon Stock**2,208 
Bruker Corp.Common Stock**4,234 
Bumble Inc - Class ACommon Stock**1,030 
Burlington Stores Inc.Common Stock**5,541 
Cactus Inc - Class ACommon Stock**1,438 
Cadence BankCommon Stock**2,036 
Cadre Holdings Inc.Common Stock**581 
California Water Service GroupCommon Stock**1,735 
Cal-Maine Foods Inc.Common Stock**564 
Capitol Federal Financial Inc.Common Stock**807 
Catalent Inc.Common Stock**1,898 
Cboe Global Markets Inc.Common Stock**2,896 
Cerevel Therapeutics HoldingCommon Stock**961 
Ceridian HCM Holding Inc.Common Stock**376 
Certara Inc.Common Stock**238 
Checkr Inc.Common Stock**193 
Chesapeake Utilities Corp.Common Stock**3,046 
Chuy's Holdings Inc.Common Stock**1,692 
Cinemark Holdings Inc.Common Stock**553 
Clear Secure Inc - Class ACommon Stock**3,310 
Clearfield Inc.Common Stock**505 
Clearwater Analytics Holdings - Class ACommon Stock**525 
Coca-Cola Consolidated Inc.Common Stock**1,301 
Community Healthcare Trust Inc.Common Stock**992 
Conyers Park III AcquisitionCommon Stock**597 
CRB Group Inc.Common Stock**101 
Crossfirst Bankshares Inc.Common Stock**846 
CSW Industrials Inc.Common Stock**1,649 
CTS Corp.Common Stock**2,844 
CubesmartCommon Stock**2,935 
CVRx Inc.Common Stock**266 
Cytokinetics Inc.Common Stock**482 
Definitive Healthcare Corp.Common Stock**343 
Devon Energy Corp.Common Stock**2,919 
Diamondback Energy Inc.Common Stock**3,910 
Digitalbridge Group Inc.Common Stock**652 
Dime Community Bancshares Inc.Common Stock**1,830 
Dogwood State Bank, Non-VotingCommon Stock**237 
Dogwood State Bank, VotingCommon Stock**116 
Doubleverify Holdings Inc.Common Stock**2,757 
Doximity Inc - Class ACommon Stock**1,045 
Duolingo Inc.Common Stock**1,725 
Dutch Bros Inc - Class ACommon Stock**343 
East West Bancorp Inc.Common Stock**3,032 
Eastgroup Properties Inc.Common Stock**4,706 
18

COSTCO 401(k) RETIREMENT PLAN
Schedule H, Line 4i – Schedule of Assets (Held at End of Year) (Continued)
December 31, 2022
(in thousands)

(a) (b) Identity of issuer, borrower,
lessor, or similar party
(c) Description of investment(d) Cost(e) Current value
Element Solutions Inc.Common Stock**4,610 
Embecta Corp.Common Stock**1,041 
Encore Capital Group Inc.Common Stock**1,250 
Enerpac Tool Group Corp.Common Stock**2,850 
Enpro Industries Inc.Common Stock**971 
Entegris Inc.Common Stock**3,333 
Equity Bancshares Inc - Class ACommon Stock**1,208 
ESAB Corp.Common Stock**1,014 
ESCO Technologies Inc.Common Stock**2,921 
FB Financial Corp.Common Stock**2,105 
Federal Signal Corp.Common Stock**2,869 
Fiesta Restaurant GroupCommon Stock**843 
First American FinancialCommon Stock**1,215 
First Bancshares Inc/MsCommon Stock**1,423 
First Industrial Realty Trust Inc.Common Stock**610 
Five BelowCommon Stock**1,622 
Five Star BancorpCommon Stock**951 
Five9 Inc.Common Stock**2,826 
Flame Biosciences, Inc.Common Stock**75 
Floor & Decor Holdings Inc - Class ACommon Stock**486 
Fresh Market Escrow SharesCommon Stock**— 
Generation Bio Co.Common Stock**231 
Gibraltar Industries Inc.Common Stock**1,624 
Graco Inc.Common Stock**2,248 
Grasshopper Bancorp, VotingCommon Stock**86 
H.B. Fuller Co.Common Stock**866 
Hanover Insurance Group Inc/TheCommon Stock**2,835 
Haul Hub, Series C ConvertibleCommon Stock**97 
Haynes International Inc.Common Stock**1,697 
Helios Technologies Inc.Common Stock**1,851 
Heritage Commerce Corp.Common Stock**1,872 
Hillevax Inc.Common Stock**247 
Home Bancshares Inc.Common Stock**1,839 
Huron Consulting Group Inc.Common Stock**1,327 
IAA Inc.Common Stock**1,196 
Icosavax Inc.Common Stock**315 
ICU Medical IncCommon Stock**2,617 
Idacorp Inc.Common Stock**3,208 
Independence Realty Trust Inc.Common Stock**1,704 
Infinera Corp.Common Stock**318 
Ingersoll-Rand Inc.Common Stock**5,744 
Insmed Inc.Common Stock**2,354 
Intellia Therapeutics Inc.Common Stock**458 
Ionis Pharmaceuticals Inc.Common Stock**1,349 
John Bean Technologies Corp.Common Stock**1,998 
Karuna Therapeutics Inc.Common Stock**1,766 
Kearny Financial Corp/MdCommon Stock**755 
19

COSTCO 401(k) RETIREMENT PLAN
Schedule H, Line 4i – Schedule of Assets (Held at End of Year) (Continued)
December 31, 2022
(in thousands)

(a) (b) Identity of issuer, borrower,
lessor, or similar party
(c) Description of investment(d) Cost(e) Current value
Kemper Corp.Common Stock**1,524 
Kimbell Royalty Partners, LPCommon Stock**429 
Kura Oncology Inc.Common Stock**457 
Kymera Therapeutics Inc.Common Stock**295 
Landstar System Inc.Common Stock**1,621 
Lattice Semiconductor Corp.Common Stock**6,390 
Legalzoomcom Inc.Common Stock**401 
Liberty Energy Inc.Common Stock**2,556 
Littelfuse Inc.Common Stock**2,448 
Live Oak Bancshares Inc.Common Stock**1,734 
Magnolia Oil & Gas Corp - Class ACommon Stock**4,496 
Manhattan Associates Inc.Common Stock**2,158 
Marriott Vacations WorldCommon Stock**1,113 
Masimo Corp.Common Stock**1,938 
MGE Energy Inc.Common Stock**1,083 
Modivcare Inc.Common Stock**2,466 
Molina Healthcare Inc.Common Stock**5,626 
Monro Inc.Common Stock**2,585 
Monte Rosa Therapeutics Inc.Common Stock**180 
Morphic Holding Inc.Common Stock**460 
MSA Safety Inc.Common Stock**724 
Mueller Water Products Inc - Class ACommon Stock**1,543 
nCino Inc.Common Stock**312 
Neogen Corp.Common Stock**1,263 
Neogenomics Inc.Common Stock**652 
NextEra Energy Partners, LPCommon Stock**1,911 
Nextier Oilfield Solutions Inc.Common Stock**2,312 
Nkarta Inc.Common Stock**267 
Nurix Therapeutics Inc.Common Stock**138 
Ollie's Bargain Outlet Holdings Inc.Common Stock**3,910 
One Gas Inc.Common Stock**1,188 
Onto Innovation Inc.Common Stock**1,975 
Option Care Health Inc.Common Stock**2,265 
Origin Bancorp Inc.Common Stock**1,837 
Outset Medical Inc.Common Stock**2,064 
P10 Inc - Class ACommon Stock**1,159 
Pacific Biosciences of California, Inc.Common Stock**958 
Pacific Premier Bancorp Inc.Common Stock**1,777 
Papa John's International, Inc.Common Stock**4,520 
PAR Technology Corp/DelCommon Stock**1,470 
Parsons Corp.Common Stock**2,752 
Pax Labs - Class ACommon Stock**109 
Paycom Software Inc.Common Stock**998 
Paycor HCM Inc.Common Stock**1,612 
Payoneer Global Inc.Common Stock**1,913 
Pennant Group Inc/TheCommon Stock**487 
Pennymac Financial ServicesCommon Stock**3,862 
20

COSTCO 401(k) RETIREMENT PLAN
Schedule H, Line 4i – Schedule of Assets (Held at End of Year) (Continued)
December 31, 2022
(in thousands)

(a) (b) Identity of issuer, borrower,
lessor, or similar party
(c) Description of investment(d) Cost(e) Current value
Penumbra Inc.Common Stock**2,200 
Pinnacle Financial PartnersCommon Stock**2,532 
Post Holdings Inc.Common Stock**2,643 
Post Holdings Partnering Corp.Common Stock**420 
PRA Group Inc.Common Stock**1,648 
Privia Health Group Inc.Common Stock**1,528 
Procept Biorobotics Corp.Common Stock**2,627 
Prometheus Biosciences Inc.Common Stock**1,582 
Quaker Chemical CorporationCommon Stock**2,544 
Quidelortho Corp.Common Stock**2,349 
Rapid Micro Biosystems Inc - Class ACommon Stock**70 
Rapt Therapeutics Inc.Common Stock**532 
RBC Bearings Inc.Common Stock**1,814 
Reata Pharmaceuticals Inc - Class ACommon Stock**444 
Red Robin Gourmet BurgersCommon Stock**142 
Red Rock Resorts Inc - Class ACommon Stock**722 
Relay Therapeutics Inc.Common Stock**372 
Replimune Group Inc.Common Stock**389 
Rexford Industrial Realty Inc.Common Stock**3,115 
RHCommon Stock**997 
Rivian Automotive Inc - Class ACommon Stock**2,446 
Rover Group Earnout Shares 16.00Common Stock**
Rush Enterprises Inc - Class ACommon Stock**1,652 
Ruth'S Hospitality Group Inc.Common Stock**740 
Saia Inc.Common Stock**2,698 
Scholar Rock Holding Corp.Common Stock**557 
Seer Inc.Common Stock**136 
Selective Insurance GroupCommon Stock**5,156 
Service Titan Inc.Common Stock**70 
Shoals Technologies Group - Class ACommon Stock**924 
Signature BankCommon Stock**2,658 
Simply Good Foods Co/TheCommon Stock**1,034 
Siteone Landscape Supply Inc.Common Stock**3,134 
SJW GroupCommon Stock**2,300 
Skechers U.S.A. Inc - Class ACommon Stock**2,650 
Skyline Champion Corp.Common Stock**2,324 
SouthState Corp.Common Stock**2,306 
Southwest Gas Holdings Inc.Common Stock**3,110 
SPX Technologies Inc.Common Stock**3,175 
SS&C Technologies HoldingsCommon Stock**2,747 
Stepstone Group Inc - Class ACommon Stock**1,687 
Stericycle Inc.Common Stock**2,423 
Strategic Education Inc.Common Stock**303 
Teledyne Technologies Inc.Common Stock**5,177 
Tenaya Therapeutics Inc.Common Stock**18 
Terreno Realty Corp.Common Stock**1,314 
Tetra Tech Inc.Common Stock**1,466 
21

COSTCO 401(k) RETIREMENT PLAN
Schedule H, Line 4i – Schedule of Assets (Held at End of Year) (Continued)
December 31, 2022
(in thousands)

(a) (b) Identity of issuer, borrower,
lessor, or similar party
(c) Description of investment(d) Cost(e) Current value
Texas Capital Bancshares Inc.Common Stock**2,332 
Themis Sol (Clio), Series E ConvertibleCommon Stock**322 
Themis Solutions Inc.Common Stock**113 
Thermon Group Holdings Inc.Common Stock**586 
Toast Inc - Class ACommon Stock**3,025 
Toro Co.Common Stock**1,887 
Treehouse Foods Inc.Common Stock**1,328 
U.S. Physical Therapy Inc.Common Stock**1,566 
Ultragenyx Pharmaceutical Inc.Common Stock**607 
Upwork Inc.Common Stock**481 
Utz Brands Inc.Common Stock**1,720 
Vaxcyte Inc.Common Stock**544 
Venture Global LNG, Inc., Series BCommon Stock**235 
Venture Global LNG, Inc., Series CCommon Stock**3,083 
Veritex Holdings Inc.Common Stock**1,470 
Verve Therapeutics Inc.Common Stock**401 
Vimeo Inc.Common Stock**504 
Vontier Corp.Common Stock**1,097 
Warby Parker Inc - Class ACommon Stock**1,680 
Western Alliance BancorporationCommon Stock**3,320 
Willscot Mobile Mini Holdings Corp.Common Stock**865 
Workiva Inc.Common Stock**3,108 
Wyndham Hotels & Resorts Inc.Common Stock**1,594 
Xencor Inc.Common Stock**1,062 
Xometry Inc - Class ACommon Stock**1,198 
Zentalis Pharmaceuticals Inc.Common Stock**478 
Abcam PLC - Sponsored ADRForeign Stock**2,340 
Altus Group Ltd.Foreign Stock**750 
Argenx SE - ADRForeign Stock**4,444 
Ascendis Pharma A/S - ADRForeign Stock**3,307 
Axis Capital Holdings Ltd.Foreign Stock**3,596 
Clarivate PLCForeign Stock**1,500 
Constellium SEForeign Stock**2,182 
Credo Technology Group Holding Ltd.Foreign Stock**717 
Crispr Therapeutics AGForeign Stock**485 
dentalcorp Holdings Ltd.Foreign Stock**645 
Descartes Systems Group/TheForeign Stock**3,359 
Ero Copper Corp.Foreign Stock**959 
Essent Group Ltd.Foreign Stock**1,064 
Farfetch Ltd - Class AForeign Stock**629 
Firstservice Corp.Foreign Stock**4,963 
Flagship Communities REIT UTForeign Stock**338 
Franco-Nevada Corp.Foreign Stock**625 
MorphoSys AG - ADRForeign Stock**427 
Nomad Foods Ltd.Foreign Stock**1,768 
Novanta Inc.Foreign Stock**1,802 
Olink Holding AB - ADRForeign Stock**1,205 
22

COSTCO 401(k) RETIREMENT PLAN
Schedule H, Line 4i – Schedule of Assets (Held at End of Year) (Continued)
December 31, 2022
(in thousands)

(a) (b) Identity of issuer, borrower,
lessor, or similar party
(c) Description of investment(d) Cost(e) Current value
Popular Inc.Foreign Stock**1,267 
Prothena Corp PLCForeign Stock**1,073 
Rentokil Initial PLCForeign Stock**1,822 
Repare Therapeutics Inc.Foreign Stock**347 
TMX Group Ltd.Foreign Stock**2,009 
Tricon Residential Inc.Foreign Stock**1,444 
West Fraser Timber Co. Ltd.Foreign Stock**1,190 
1661 Inc D/B/A Goat, Series F ConvertiblePreferred Stock**178 
ABL Space Systems, Series B ConvertiblePreferred Stock**280 
Caris Life Sciences, Series C ConvertiblePreferred Stock**508 
Caris Life Sciences, Series D ConvertiblePreferred Stock**340 
Cava Group, Series E ConvertiblePreferred Stock**1,106 
Cava Group, Series F ConvertiblePreferred Stock**567 
Cellink, Inc., Series D ConvertiblePreferred Stock**298 
Checker Inc., Series D ConvertiblePreferred Stock**414 
Checker, Inc., Series C ConvertiblePreferred Stock**265 
Cleerly, Series C ConvertiblePreferred Stock**252 
Convoy, Series C ConvertiblePreferred Stock**254 
Convoy, Series D ConvertiblePreferred Stock**176 
CTB Group, Series D ConvertiblePreferred Stock**354 
Farmers Business NetworkPreferred Stock**1,495 
Flexe, Series C ConvertiblePreferred Stock**408 
Flexe, Series D ConvertiblePreferred Stock**161 
Haul Hub, Series B ConvertiblePreferred Stock**269 
Honor Technology, Series D ConvertiblePreferred Stock**430 
Inscripta, Series E ConvertiblePreferred Stock**188 
Kardium Inc., Series D-6 ConvertiblePreferred Stock**258 
Kobold Metals, Series B-1 ConvertiblePreferred Stock**311 
National Resilence, Series C ConvertiblePreferred Stock**833 
National Resilience, Series B ConvertiblePreferred Stock**1,443 
Nuro, Series C ConvertiblePreferred Stock**591 
Nuro, Series D ConvertiblePreferred Stock**188 
Pirus Inc., Series C-2 ConvertiblePreferred Stock**608 
Redwood Materials, Series C ConvertiblePreferred Stock**608 
SecurityScorecard Inc., Series E ConvertiblePreferred Stock**263 
Seismic Software, Series F ConvertiblePreferred Stock**39 
Seismic Software, Series E ConvertiblePreferred Stock**498 
ServiceTitan Inc., Series A-1 ConvertiblePreferred Stock**
ServiceTitan, Inc., Series F ConvertiblePreferred Stock**30 
ServiceTitan, Inc., Series D ConvertiblePreferred Stock**498 
Sila Nanotechnologies, Inc., Series F ConvertiblePreferred Stock**351 
Socure Inc.Preferred Stock**49 
Socure Inc., Series A ConvertiblePreferred Stock**60 
Socure Inc., Series A-1 ConvertiblePreferred Stock**49 
Socure Inc., Series B ConvertiblePreferred Stock**
Socure Inc., Series E ConvertiblePreferred Stock**113 
23

COSTCO 401(k) RETIREMENT PLAN
Schedule H, Line 4i – Schedule of Assets (Held at End of Year) (Continued)
December 31, 2022
(in thousands)

(a) (b) Identity of issuer, borrower,
lessor, or similar party
(c) Description of investment(d) Cost(e) Current value
Themis Sol (Clio), Series Aa ConvertiblePreferred Stock**26 
Themis Sol (Clio), Series Ab ConvertiblePreferred Stock**
Themis Sol (Clio), Series B ConvertiblePreferred Stock**
Collective US Govt Short-Term Investment Fund 5 BpsBond**1,588 
CashCash**(4)
Canadian DollarCurrency**14 
* T. Rowe Price Treasury Reserve FundMoney Market Securities**13,135 
Dogwood State BankWarrants**16 
Grasshopper Bancorp, Inc.Warrants**
KKR Acquisition Holdings I Corp - Class AWarrants**
Scholar RockWarrants**23 
International Equity Portfolio:
CashCash**(14)
Federated Government Obligations FundMoney Market Securities**19 
Capital Group International All Country Equity TrustCommon Trust**166,902 
Total separately managed accounts2,171,053 
Fully Benefit-Responsive Contracts:
Capital Preservation Portfolio:
* T. Rowe Price Cash Reserve TrustCommon Trust**116,950 
* T. Rowe Price Short Term Common Trust:
American General Life Insurance CompanyCollective Trust Fund**73,544 
Lincoln National Life InsuranceCollective Trust Fund**83,570 
Massachusetts Mutual Life Insurance CompanyCollective Trust Fund**92,600 
Met Tower Life InsuranceCollective Trust Fund**87,241 
Monumental Life(Trasamerica)Collective Trust Fund**75,417 
New York LifeCollective Trust Fund**92,614 
Pacific Life Insurance CompanyCollective Trust Fund**91,500 
Prudential Insurance Company of AmericaCollective Trust Fund**91,505 
Royal Bank of CanadaCollective Trust Fund**74,606 
State Street Bank & Trust CompanyCollective Trust Fund**81,228 
* T. Rowe Price Intermediate Term Common Trust:
American General Life Insurance CompanyCollective Trust Fund**48,807 
Lincoln National Life InsuranceCollective Trust Fund**55,627 
Massachusetts Mutual Life Insurance CompanyCollective Trust Fund**83,864 
Met Tower Life InsuranceCollective Trust Fund**107,334 
Monumental Life(Trasamerica)Collective Trust Fund**50,050 
New York LifeCollective Trust Fund**83,876 
Pacific Life Insurance CompanyCollective Trust Fund**82,867 
Prudential Insurance Company of AmericaCollective Trust Fund**82,871 
Royal Bank of CanadaCollective Trust Fund**49,512 
State Street Bank & Trust CompanyCollective Trust Fund**99,935 
* T. Rowe Price Managed Bond Trust:
American General Life Insurance CompanyCollective Trust Fund**11,074 
24

COSTCO 401(k) RETIREMENT PLAN
Schedule H, Line 4i – Schedule of Assets (Held at End of Year) (Continued)
December 31, 2022
(in thousands)

(a) (b) Identity of issuer, borrower,
lessor, or similar party
(c) Description of investment(d) Cost(e) Current value
Lincoln National Life InsuranceCollective Trust Fund**12,583 
Massachusetts Mutual Life Insurance CompanyCollective Trust Fund**15,972 
Met Tower Life InsuranceCollective Trust Fund**17,607 
Monumental Life(Trasamerica)Collective Trust Fund**11,356 
New York LifeCollective Trust Fund**15,975 
Pacific Life Insurance CompanyCollective Trust Fund**15,782 
Prudential Insurance Company of AmericaCollective Trust Fund**15,783 
Royal Bank of CanadaCollective Trust Fund**11,234 
State Street Bank & Trust CompanyCollective Trust Fund**16,394 
Total fully benefit-responsive contracts1,849,278 
* Costco Wholesale CorporationCommon stock **11,486,680 
Total investments24,897,471 
* Participant loansInterest rates of 4.25% to 10.25% maturing through 2037__514,605 
Total$25,412,076 
_________________________
* Indicates a party-in-interest
** Information is not required as investments are participant directed



See accompanying report of independent registered public accounting firm.
25


SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the trustees (or other persons who administer the employee benefit plan) have duly caused this annual report to be signed on its behalf by the undersigned hereunto duly authorized.
COSTCO 401(k) RETIREMENT PLAN
June 29, 2023By:
/s/ PATRICK J. CALLANS
Date
Patrick J. Callans
Executive Vice President
Costco Wholesale Corporation

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