Form 8-K

8-K — COSTCO WHOLESALE CORP /NEW

Accession: 0000909832-26-000100

Filed: 2026-10-16

Period: 2026-10-13

CIK: 0000909832

SIC: 5331 (RETAIL-VARIETY STORES)

Item: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Item: Financial Statements and Exhibits

Documents

8-K — cost-20261013.htm (Primary)

EX-10.1 (costex1018-k101326.htm)

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8-K (Primary)

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FALSECOSTCO WHOLESALE CORP /NEW000090983200009098322026-10-132026-10-13

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): October 13, 2026

COSTCO WHOLESALE CORPORATION

(Exact name of registrant as specified in its charter)

Washington 0-20355 91-1223280

(State or other jurisdiction

of incorporation) (Commission

File No.) (I.R.S. Employer

Identification No.)

999 Lake Drive

Issaquah, WA 98027

(Address of principal executive offices and zip code)

Registrant’s telephone number, including area code: 425-313-8100

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock, par value $.005 per share COST NASDAQ

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR §230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 5.02. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

On October 13, 2026, the Compensation Committee of the Board of Directors approved the fiscal 2027 criteria for bonuses to executive officers, with the Nominating and Governance Committee of the Board also approving the environmental and social performance criteria. Executive officers other than the Chief Executive Officer are eligible to receive base bonuses of $400,000. The base amounts include $160,000 based on targets relating to sales and $160,000 based on targets relating to pre-tax income. The potential payment attributable to each goal may be from zero to up to 120% of the target amount, based on the level of achievement. In addition, up to $80,000 can be earned relating to environmental and social objectives based on quantitative performance metrics (including those concerning human capital and environmental-related areas).

For fiscal 2027, the Chief Executive Officer is eligible to receive a base bonus of $1.2 million. The base amount includes $500,000 based on targets relating to sales and $500,000 based on targets relating to pre-tax income. The potential payment attributable to each goal may be from zero to up to 120% of the target amount, based on the level of achievement. In addition, $200,000 can be earned relating to environmental and social metrics (as discussed above).

A copy of the Fiscal 2027 Executive Bonus Plan is attached as Exhibit 10.1.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits.

10.1. Fiscal 2027 Executive Bonus Plan.

104 Cover Page Interactive Data File (embedded within the Inline XBRL document).

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, hereunto duly authorized.

COSTCO WHOLESALE CORPORATION

Dated: October 16, 2026 By: /s/ John Sullivan

John Sullivan

Executive Vice President, General Counsel and Secretary

EX-10.1

Filename: costex1018-k101326.htm · Sequence: 2

Document

Exhibit 10.1

Costco Wholesale Corporation

Fiscal 2027 Executive Bonus Plan

For fiscal year 2027, executive officers other than the Chief Executive Officer and President are eligible for a base bonus of $400,000. The base amounts include $160,000 based on targets relating to sales and $160,000 based on targets relating to pre-tax income. The potential payment attributable to each goal may be from zero to up to 120% of the target amount, based on the level of achievement. In addition, up to $80,000 can be earned relating to environmental and social objectives based on quantitative performance metrics (including those concerning human capital and environmental-related areas).

For fiscal year 2027, the Chief Executive Officer and President is eligible to receive a base bonus of $1.2 million. The base amount includes $500,000 based on targets relating to sales and $500,000 based on targets relating to pre-tax income. The potential payment attributable to each goal may be from zero to up to 120% of the target amount, based on the level of achievement. In addition, $200,000 can be earned relating to environmental and social metrics (as discussed above).

Base bonus targets are exclusive of foreign currency changes and are subject to adjustment for certain factors consistent with applicable accounting standards. The final bonus amounts are subject to the approval of the Compensation Committee and the Nominating and Corporate Governance Committee as to the environmental and social bonuses. To be eligible for the annual bonus, an individual must be employed by the Company on October 22, 2027.

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