COST / Costco Wholesale Corporation - Pengajuan SECLaporan Tahunan, Pernyataan Proksi

Costco Wholesale Corporation
US ˙ NasdaqGS ˙ US22160K1051

Mga Batayang Estadistika
LEI 29DX7H14B9S6O3FD6V18
CIK 909832
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to Costco Wholesale Corporation
SEC Filings (Chronological Order)
Halaman ini menyediakan daftar lengkap dan kronologis dari Pengajuan SEC, tidak termasuk pengajuan kepemilikan yang kami sediakan di tempat lain.
August 7, 2025 8-K

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): August 4, 2025 COSTCO WHOLESALE C

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): August 4, 2025 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Commis

July 16, 2025 EX-99.1

COSTCO WHOLESALE CORPORATION ANNOUNCES QUARTERLY CASH DIVIDEND

Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION ANNOUNCES QUARTERLY CASH DIVIDEND ISSAQUAH, Wash., July 16, 2025 - Costco Wholesale Corporation (“Costco” or the “Company”) (Nasdaq: COST) today announced that its Board of Directors has declared a quarterly cash dividend on Costco common stock of $1.30 per share. The quarterly dividend is payable August 15, 2025, to shareholders of record at

July 16, 2025 8-K

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): July 15, 2025 COSTCO WHOLESALE CO

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): July 15, 2025 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Commiss

June 27, 2025 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K ☒ ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 ☐ TRANSITION REPORT PURSUANT TO SECTION 15(

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 ——————————————————— FORM 11-K ——————————————————— ☒ ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 ☐ TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File

June 11, 2025 8-K

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): June 10, 2025 COSTCO WHOLESALE CO

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): June 10, 2025 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Commiss

June 5, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended May 11, 2025 or ☐ TRANSITION REPORT PURSUANT TO

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended May 11, 2025 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 0-20355 Costco Wholesale Corporation (Exact name

May 29, 2025 EX-99.1

COSTCO WHOLESALE CORPORATION REPORTS THIRD QUARTER AND YEAR-TO-DATE OPERATING RESULTS FOR FISCAL 2025

Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION REPORTS THIRD QUARTER AND YEAR-TO-DATE OPERATING RESULTS FOR FISCAL 2025 ISSAQUAH, Wash., May 29, 2025 - Costco Wholesale Corporation (“Costco” or the “Company”) (Nasdaq: COST) today announced its operating results for the third quarter (twelve weeks) and the first 36 weeks of fiscal 2025, ended May 11, 2025. Net sales for the quarter increas

May 29, 2025 8-K

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): May 29, 2025 COSTCO WHOLESALE COR

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): May 29, 2025 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Commissi

May 29, 2025 EX-99.2

3rd Quarter FY 2025 Supplemental Information 1 Exhibit 99.2 $62.0B Net Sales +8.0% Growth +5.7% Comparable Sales +8.0% Adjusted Comparable Sales1 +5.2% Comparable Traffic +14.8% E-Comm Comparable Sales +15.7% Adjusted E-Comm Comparable Sales2 Q3 High

costex9928-k52925 3rd Quarter FY 2025 Supplemental Information 1 Exhibit 99.2 $62.0B Net Sales +8.0% Growth +5.7% Comparable Sales +8.0% Adjusted Comparable Sales1 +5.2% Comparable Traffic +14.8% E-Comm Comparable Sales +15.7% Adjusted E-Comm Comparable Sales2 Q3 Highlights - Sales 1 - Excluding impacts from changes in gasoline prices and foreign exchange 2 - E-commerce Comparable Sales excluding

May 15, 2025 EX-1.01

Exhibit 1.01 - Conflict Minerals Report

Conflict Minerals Report of Costco Wholesale Corporation Reporting Year 2024 This Conflict Mineral Report (CMR) of Costco Wholesale Corporation (Costco or the Company) is made for calendar year 2024.

May 15, 2025 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT Costco Wholesale Corporation (Exact name of the registrant as specified in its charter) Washington 000-20355 91-1223280 (State or other juri

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT Costco Wholesale Corporation (Exact name of the registrant as specified in its charter) Washington 000-20355 91-1223280 (State or other jurisdiction of incorporation or organization) (Commission File Number) (I.R.S. Employer Identification No.) 999 Lake Drive, Issaquah, WA 98027 (Address o

May 15, 2025 CORRESP

May 15, 2025

Writer’s Direct Number: (425) 313-2060 Fax: (425) 313-6800 May 15, 2025 BY EDGAR Patrick Kuhn and Lyn Shenk Division of Corporation Finance Office of Trade & Services Securities and Exchange Commission 100 F Street N.

April 21, 2025 CORRESP

FOIA CONFIDENTIAL TREATMENT REQUESTED

Writer’s Direct Number: (425) 313-2060 Fax: (425) 313-6800 FOIA CONFIDENTIAL TREATMENT REQUESTED April 21, 2025 BY EDGAR Patrick Kuhn and Lyn Shenk Division of Corporation Finance Office of Trade & Services Securities and Exchange Commission 100 F Street N.

April 16, 2025 EX-99.1

COSTCO WHOLESALE CORPORATION ANNOUNCES AN INCREASE IN ITS QUARTERLY CASH DIVIDEND

Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION ANNOUNCES AN INCREASE IN ITS QUARTERLY CASH DIVIDEND ISSAQUAH, Wash., April 16, 2025 - Costco Wholesale Corporation (“Costco” or the “Company”) (Nasdaq: COST) today announced that its Board of Directors has declared a quarterly cash dividend on Costco common stock and approved a quarterly increase from $1.16 to $1.30 per share, $5.20 on an an

April 16, 2025 8-K

Financial Statements and Exhibits, Other Events

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): April 16, 2025 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Commis

April 15, 2025 CORRESP

999 Lake Drive ∙ Issaquah, WA 98027 ∙ (425) 313-8100 ∙ www.costco.com

Writer’s Direct Number: (425) 313-8792 VIA EDGAR April 15, 2025 Mr. Lyn Shenk Division of Corporate Finance Office of Trade & Services U.S. Securities and Exchange Commission 100 F Street N.E. Washington, DC 20549 Re: Costco Wholesale Corporation 10-K for Fiscal Year Ended September 1, 2024 File No. 000-20355 Dear Mr. Shenk: Thank you for our call this morning. Per our call, Costco Wholesale Corpo

March 21, 2025 CORRESP

VIA EDGAR

Writer’s Direct Number: (425) 313-8792 VIA EDGAR March 21, 2025 Mr. Patrick Kuhn Division of Corporation Finance Office of Trade & Services U.S. Securities and Exchange Commission 100 F Street N.E. Washington, D.C. 20549 Re: Costco Wholesale Corporation 10-K for Fiscal Year Ended September 1, 2024 File No. 000-20355 Dear Mr. Kuhn: Thank you for our call this morning. Per our call, Costco Wholesale

March 13, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended February 16, 2025 or ☐ TRANSITION REPORT PURSUA

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended February 16, 2025 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 0-20355 Costco Wholesale Corporation (Exact

March 13, 2025 EX-10.2

Citibank, N.A. Co-Branded Credit Card Agreement and amendments 1 through 13

Exhibit 10.2 Certain confidential information contained in this document, indicated by the mark “[*]”, has been omitted because it is both (i) not material and (ii) customarily and actually treated as private or confidential Execution Copy CO-BRANDED CREDIT CARD PROGRAM AGREEMENT This Agreement is made this 27th day of February, 2015 by and between CITIBANK, N.A. (“Bank”), and COSTCO WHOLESALE COR

March 6, 2025 EX-99.1

COSTCO WHOLESALE CORPORATION REPORTS SECOND QUARTER AND YEAR-TO-DATE OPERATING RESULTS FOR FISCAL 2025 AND FEBRUARY SALES RESULTS

Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION REPORTS SECOND QUARTER AND YEAR-TO-DATE OPERATING RESULTS FOR FISCAL 2025 AND FEBRUARY SALES RESULTS ISSAQUAH, Wash., March 6, 2025 - Costco Wholesale Corporation (“Costco” or the “Company”) (Nasdaq: COST) today announced its operating results for the second quarter (twelve weeks) and the first 24 weeks of fiscal 2025, ended February 16, 2025

March 6, 2025 8-K

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): March 6, 2025 COSTCO WHOLESALE CO

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): March 6, 2025 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Commiss

March 6, 2025 EX-99.2

2nd Quarter FY 2025 Supplemental Information 1 $62.5B Net Sales +9.1% Growth +6.8% Comparable Sales +9.1% Adjusted Comparable Sales1 +5.7% Comparable Traffic +20.9% E-Comm Comparable Sales +22.2% Adjusted E-Comm Comparable Sales2 Q2 Highlights - Sale

costex9928-k3625 2nd Quarter FY 2025 Supplemental Information 1 $62.5B Net Sales +9.1% Growth +6.8% Comparable Sales +9.1% Adjusted Comparable Sales1 +5.7% Comparable Traffic +20.9% E-Comm Comparable Sales +22.2% Adjusted E-Comm Comparable Sales2 Q2 Highlights - Sales 1 - Excluding impacts from changes in gasoline prices and foreign exchange 2 - E-commerce Comparable Sales excluding impacts from F

February 3, 2025 8-K

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

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): January 30, 2025 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Comm

January 27, 2025 EX-99.1

COSTCO WHOLESALE CORPORATION ANNOUNCES QUARTERLY CASH DIVIDEND

Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION ANNOUNCES QUARTERLY CASH DIVIDEND ISSAQUAH, Wash., Jan. 23, 2025 - Costco Wholesale Corporation (“Costco” or the “Company”) (Nasdaq: COST) today announced that its Board of Directors has declared a quarterly cash dividend on Costco common stock of $1.16 per share. The quarterly dividend is payable February 21, 2025, to shareholders of record

January 27, 2025 8-K

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): January 23, 2025 COSTCO WHOLESALE

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): January 23, 2025 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Comm

January 17, 2025 PX14A6G

United States Securities and Exchange Commission Washington, D.C. 20549 NOTICE OF EXEMPT SOLICITATION Pursuant to Rule 14a-103

United States Securities and Exchange Commission Washington, D.C. 20549 NOTICE OF EXEMPT SOLICITATION Pursuant to Rule 14a-103 Name of the Registrant: Costco Wholesale Corporation Name of persons relying on exemption: National Center for Public Policy Research Address of persons relying on exemption: 2005 Massachusetts Ave. N.W., Washington, D.C 20036 Written materials are submitted pursuant to Ru

January 17, 2025 PX14A6G

United States Securities and Exchange Commission Washington, D.C. 20549 NOTICE OF EXEMPT SOLICITATION Pursuant to Rule 14a-103

United States Securities and Exchange Commission Washington, D.C. 20549 NOTICE OF EXEMPT SOLICITATION Pursuant to Rule 14a-103 Name of the Registrant: Costco Wholesale Corporation Name of persons relying on exemption: National Center for Public Policy Research Address of persons relying on exemption: 2005 Massachusetts Ave. N.W., Washington, D.C 20036 Written materials are submitted pursuant to Ru

December 19, 2024 EX-10.3

Thirteenth Amendment to Citi, N.A. Co-Branded Credit Card Agreement

Exhibit 10.3 Certain confidential information contained in this document, indicated by the mark “[*]”, has been omitted because it is both (i) not material and (ii) customarily and actually treated as private or confidential THIRTEENTH AMENDMENT TO THE CO-BRANDED CREDIT CARD PROGRAM AGREEMENT This Thirteenth Amendment (“Amendment”) is between Citibank, N.A. (“Bank”) and Costco Wholesale Corporatio

December 19, 2024 EX-10.2

Executive Employment Agreement effective January 1, 2025, between Ron Vachris and Costco Wholesale Corporation

Exhibit 10.2 EXECUTIVE EMPLOYMENT AGREEMENT THIS EXECUTIVE EMPLOYMENT AGREEMENT (this “Agreement”), effective January 1, 2025 (the “Effective Date”), is made between Costco Wholesale Corporation, a Washington corporation (the “Company”), and Ron Vachris (“Executive”). WHEREAS, Executive will be employed as the Company’s President and Chief Executive Officer effective January 1, 2025 and is expecte

December 19, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended November 24, 2024 or ☐ TRANSITION REPORT PURSUA

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended November 24, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 0-20355 Costco Wholesale Corporation (Exact

December 12, 2024 EX-99.2

1st Quarter FY 2025 Supplemental Information 1 Exhibit 99.2 $61.0B Net Sales +7.5% Growth +5.2% Comparable Sales +7.1% Adjusted Comparable Sales1 +5.1% Comparable Traffic +0.1% Comparable Ticket +13.0% E-Comm Comparable Sales +13.2% Adjusted E-Comm C

1st Quarter FY 2025 Supplemental Information 1 Exhibit 99.2 $61.0B Net Sales +7.5% Growth +5.2% Comparable Sales +7.1% Adjusted Comparable Sales1 +5.1% Comparable Traffic +0.1% Comparable Ticket +13.0% E-Comm Comparable Sales +13.2% Adjusted E-Comm Comparable Sales2 Q1 Highlights - Sales 1 - Comparable Sales excluding impacts from gas inflation/deflation and FX 2 - E-commerce Comparable Sales excl

December 12, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): December 12, 2024 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Com

December 12, 2024 EX-99.1

COSTCO WHOLESALE CORPORATION REPORTS FIRST QUARTER FISCAL YEAR 2025 OPERATING RESULTS

Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION REPORTS FIRST QUARTER FISCAL YEAR 2025 OPERATING RESULTS ISSAQUAH, Wash., December 12, 2024 - Costco Wholesale Corporation (“Costco” or the “Company”) (Nasdaq: COST) today announced its operating results for the first quarter of fiscal 2025 (twelve weeks), ended November 24, 2024. Net sales for the first quarter increased 7.5 percent, to $60.

December 11, 2024 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as Permitted by Rule 14a-6(e)(2)) ☒ Defin

December 11, 2024 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as Permitted by Rule 14a-6(e)(2)) ☐ Defin

November 7, 2024 EX-10.1

Fiscal 2025 Executive Bonus Plan

Exhibit 10.1 Costco Wholesale Corporation Fiscal 2025 Executive Bonus Plan For fiscal year 2025, executive officers other than the Chief Executive Officer and the President are eligible for a total bonus of up to $232,000. This amount includes $80,000 based on targets relating to sales and $80,000 based on targets relating to pre-tax income. The potential payment attributable to each of these perf

November 7, 2024 8-K

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): November 4, 2024 COSTCO WHOLESALE

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): November 4, 2024 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Comm

October 17, 2024 EX-99.1

COSTCO WHOLESALE CORPORATION ANNOUNCES QUARTERLY CASH DIVIDEND

Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION ANNOUNCES QUARTERLY CASH DIVIDEND ISSAQUAH, Wash., October 16, 2024 - Costco Wholesale Corporation (“Costco” or the “Company”) (Nasdaq: COST) today announced that its Board of Directors has declared a quarterly cash dividend on Costco common stock of $1.16 per share. The quarterly dividend is payable November 15, 2024, to shareholders of reco

October 17, 2024 8-K

Financial Statements and Exhibits, Other Events

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 16, 2024 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Comm

October 9, 2024 EX-21.1

Subsidiaries of the Company

Exhibit 21.1 SUBSIDIARIES OF THE COMPANY The following is a list of subsidiaries of the Company as of September 1, 2024, omitting subsidiaries which, considered in the aggregate, would not constitute a significant subsidiary. Subsidiaries State or Other Jurisdiction of Incorporation or Organization Name under Which Subsidiary Does Business Costco Wholesale Membership, Inc. California Costco Wholes

October 9, 2024 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended September 1, 2024 ☐ TRANSITION REPORT PURSUANT TO SECTI

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended September 1, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 0-20355 Costco Wholesale Corporation (Exact name of

October 9, 2024 EX-19.1

Insider Trading Policy

Exhibit 19.1 Insider Trading Policy A. General Insider Trading Policy Applicable to All Employees. While in possession of material information about the Company that is not public and could affect the trading price of its securities no employee shall: purchase or sell Costco securities; or tip a third party concerning that information. No employee shall trade in the securities of another company i

October 9, 2024 EX-97.1

Costco Wholesale Corporation Incentive Compensation Clawback Policy

Exhibit 97.1 COSTCO WHOLESALE CORPORATION Rule 10D-1 Policy on Recovery of Incentive Compensation 1.Purpose This Policy on Recovery of Incentive Compensation is to provide for the recovery of certain Incentive-Based Compensation in the event of an Accounting Restatement. Unless otherwise defined in this Policy, capitalized terms shall have the meanings set forth in Section 9. This Policy is intend

September 26, 2024 EX-99.2

4th Quarter FY 2024 Supplemental Information 1 Exhibit 99.2 $78.2B Net Sales +1.0% Growth1 +5.4% Comparable Sales +6.9% Adjusted Comparable Sales2 +6.4% Comparable Traffic -0.9% Comparable Ticket +18.9% E-Comm Comparable Sales +19.5% Adjusted E-Comm

4th Quarter FY 2024 Supplemental Information 1 Exhibit 99.2 $78.2B Net Sales +1.0% Growth1 +5.4% Comparable Sales +6.9% Adjusted Comparable Sales2 +6.4% Comparable Traffic -0.9% Comparable Ticket +18.9% E-Comm Comparable Sales +19.5% Adjusted E-Comm Comparable Sales3 Q4 Highlights - Sales 1 - Last year’s results included 17 reporting weeks for the quarter. Normalizing for the additional week net s

September 26, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): September 26, 2024 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Co

September 26, 2024 EX-99.1

COSTCO WHOLESALE CORPORATION REPORTS FOURTH QUARTER AND FISCAL YEAR 2024 OPERATING RESULTS

Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION REPORTS FOURTH QUARTER AND FISCAL YEAR 2024 OPERATING RESULTS ISSAQUAH, Wash., September 26, 2024 - Costco Wholesale Corporation (“Costco” or the “Company”) (Nasdaq: COST) today announced its operating results for the 16-week fourth quarter and the 52-week fiscal year ended September 1, 2024. For the 16-week fourth quarter, the Company report

September 20, 2024 8-K

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits

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): September 16, 2024 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Co

September 20, 2024 EX-3.2

Bylaws as amended of Costco Wholesale Corporation

Exhibit 3.2 BYLAWS OF COSTCO WHOLESALE CORPORATION TABLE OF CONTENTS Page ARTICLE 1 OFFICES 1 1.1 REGISTERED OFFICE AND REGISTERED AGENT 1 1.2 OFFICES 1 ARTICLE 2 SHAREHOLDERS 1 2.1 ANNUAL MEETING 1 2.2 SPECIAL MEETINGS 6 2.3 NOTICE OF MEETINGS 7 (a) NOTICE OF SPECIAL MEETING 8 (b) PROPOSED ARTICLES OF AMENDMENT OR DISSOLUTION 8 (c) PROPOSED MERGER, CONSOLIDATION, EXCHANGE, SALE, LEASE OR DISPOSIT

July 10, 2024 8-K

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): July 10, 2024 COSTCO WHOLESALE CO

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): July 10, 2024 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Commiss

July 10, 2024 EX-99.1

COSTCO WHOLESALE CORPORATION REPORTS JUNE SALES RESULTS AND ANNOUNCES QUARTERLY CASH DIVIDEND AND PLANS FOR MEMBERSHIP FEE INCREASE

Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION REPORTS JUNE SALES RESULTS AND ANNOUNCES QUARTERLY CASH DIVIDEND AND PLANS FOR MEMBERSHIP FEE INCREASE ISSAQUAH, Wash., July 10, 2024 – Costco Wholesale Corporation (“Costco” or the “Company”) (Nasdaq: COST) today reported net sales of $24.48 billion for the retail month of June, the five weeks ended July 7, 2024, an increase of 7.4 percent f

June 20, 2024 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K ☒ ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 ☐ TRANSITION REPORT PURSUANT TO SECTION 15(

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 ——————————————————— FORM 11-K ——————————————————— ☒ ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 ☐ TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File

June 6, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended May 12, 2024 or ☐ TRANSITION REPORT PURSUANT TO

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended May 12, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 0-20355 Costco Wholesale Corporation (Exact name

May 30, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): May 30, 2024 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Commissi

May 30, 2024 EX-99.1

COSTCO WHOLESALE CORPORATION REPORTS THIRD QUARTER AND YEAR-TO-DATE OPERATING RESULTS FOR FISCAL 2024

Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION REPORTS THIRD QUARTER AND YEAR-TO-DATE OPERATING RESULTS FOR FISCAL 2024 ISSAQUAH, Wash., May 30, 2024 - Costco Wholesale Corporation (“Costco” or the “Company”) (Nasdaq: COST) today announced its operating results for the third quarter (twelve weeks) and the first 36 weeks of fiscal 2024, ended May 12, 2024. Net sales for the quarter increas

May 30, 2024 EX-99.2

3rd Quarter FY 2024 Supplemental Information 1 Exhibit 99.2 $57.4B Net Sales +9.1% Growth +6.6% Comparable Sales +6.5% Adjusted Comparable Sales1 +6.1% Comparable Traffic +0.5% Comparable Ticket +20.7% E-Comm Comparable Sales +20.7% Adjusted E-Comm C

3rd Quarter FY 2024 Supplemental Information 1 Exhibit 99.2 $57.4B Net Sales +9.1% Growth +6.6% Comparable Sales +6.5% Adjusted Comparable Sales1 +6.1% Comparable Traffic +0.5% Comparable Ticket +20.7% E-Comm Comparable Sales +20.7% Adjusted E-Comm Comparable Sales2 Q3 Highlights - Sales 1 - Comparable Sales excluding impacts from gas inflation/deflation and FX 2 - E-commerce comparable Sales excl

May 22, 2024 EX-1.01

Exhibit 1.01 - Conflict Minerals Report

Conflict Minerals Report of Costco Wholesale Corporation Reporting Year 2023 This Conflict Mineral Report (CMR) of Costco Wholesale Corporation (Costco or the Company) is made for calendar year 2023.

May 22, 2024 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT Costco Wholesale Corporation (Exact name of the registrant as specified in its charter) Washington 000-20355 (State or other jurisdiction of

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT Costco Wholesale Corporation (Exact name of the registrant as specified in its charter) Washington 000-20355 (State or other jurisdiction of incorporation or organization) (Commission File Number) 999 Lake Drive, Issaquah, WA 98027 (Address of principal executive offices) (Zip Code) John S

April 10, 2024 8-K

Financial Statements and Exhibits, Other Events

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): April 10, 2024 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Commis

April 10, 2024 EX-99.1

COSTCO WHOLESALE CORPORATION REPORTS MARCH SALES RESULTS AND ANNOUNCES AN INCREASE IN ITS QUARTERLY CASH DIVIDEND

Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION REPORTS MARCH SALES RESULTS AND ANNOUNCES AN INCREASE IN ITS QUARTERLY CASH DIVIDEND ISSAQUAH, Wash., April 10, 2024 – Costco Wholesale Corporation (“Costco” or the “Company”) (Nasdaq: COST) today reported net sales of $23.48 billion for the retail month of March, the five weeks ended April 7, 2024, an increase of 9.4 percent from $21.46 bill

March 13, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended February 18, 2024 or ☐ TRANSITION REPORT PURSUA

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended February 18, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 0-20355 Costco Wholesale Corporation (Exact

March 7, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): March 7, 2024 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Commiss

March 7, 2024 EX-99.1

COSTCO WHOLESALE CORPORATION REPORTS SECOND QUARTER AND YEAR-TO-DATE OPERATING RESULTS FOR FISCAL 2024 AND FEBRUARY SALES RESULTS

Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION REPORTS SECOND QUARTER AND YEAR-TO-DATE OPERATING RESULTS FOR FISCAL 2024 AND FEBRUARY SALES RESULTS ISSAQUAH, Wash., March 7, 2024 - Costco Wholesale Corporation (“Costco” or the “Company”) (Nasdaq: COST) today announced its operating results for the second quarter (twelve weeks) and the first 24 weeks of fiscal 2024, ended February 18, 2024

February 13, 2024 SC 13G/A

COST / Costco Wholesale Corporation / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv0691-costcowholesalecorp.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 9)* Name of issuer: Costco Wholesale Corp Title of Class of Securities: Common Stock CUSIP Number: 22160K105 Date of Event Which Requires Filing of this Statement: December 29, 2023 Check the appropriate box to des

February 9, 2024 8-K

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): February 5, 2024 COSTCO WHOLESALE

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): February 5, 2024 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Comm

February 9, 2024 EX-99.1

COSTCO WHOLESALE CORPORATION ANNOUNCES RICHARD GALANTI WILL STEP DOWN AS CFO, NAMES GARY MILLERCHIP NEW CFO

Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION ANNOUNCES RICHARD GALANTI WILL STEP DOWN AS CFO, NAMES GARY MILLERCHIP NEW CFO ISSAQUAH, Wash., Feb. 06, 2024 (GLOBE NEWSWIRE) - Costco Wholesale Corporation (“Costco” or the “Company”) (Nasdaq: COST) announced today that Richard Galanti has confirmed his intention to step down as Chief Financial Officer, effective March 15, 2024. The Board o

January 22, 2024 8-K

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): January 18, 2024 COSTCO WHOLESALE

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): January 18, 2024 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Comm

January 22, 2024 8-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 16, 2023 COSTCO WHOLESAL

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 16, 2023 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Com

January 22, 2024 EX-99.1

COSTCO WHOLESALE CORPORATION ANNOUNCES QUARTERLY CASH DIVIDEND

Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION ANNOUNCES QUARTERLY CASH DIVIDEND ISSAQUAH, Wash., Jan. 18, 2024 (GLOBE NEWSWIRE) - Costco Wholesale Corporation (“Costco” or the “Company”) (Nasdaq: COST) today announced that its Board of Directors has declared a quarterly cash dividend on Costco common stock of $1.02 per share. The quarterly dividend is payable February 16, 2024, to shareh

January 19, 2024 S-8

As filed with the Securities and Exchange Commission on January 19, 2024

S-8 As filed with the Securities and Exchange Commission on January 19, 2024 Registration No.

January 19, 2024 EX-FILING FEES

Filing Fee Table.

Exhibit 107 Calculation of Filing Fee Table Form S-8 (Form Type) Costco Wholesale Corporation (Exact Name of Registrant as Specified in its Charter) Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Equity Common Stock, $0.

January 17, 2024 PX14A6G

Bowyer Research urges shareholders to vote FOR Proposal 4, on the 2024 proxy ballot of Costco Wholesale (“Costco” or the “Company”). The “Resolved” clause of Proposal No. 4 states:

Summary Bowyer Research urges shareholders to vote FOR Proposal 4, on the 2024 proxy ballot of Costco Wholesale (“Costco” or the “Company”).

December 20, 2023 EX-10.2

Executive Employment Agreement effective January 1, 2024, between Ron Vachris and Costco Wholesale Corporation

Exhibit 10.2 EXECUTIVE EMPLOYMENT AGREEMENT THIS EXECUTIVE EMPLOYMENT AGREEMENT (this “Agreement”), effective January 1, 2024 (the “Effective Date”), is made between Costco Wholesale Corporation, a Washington corporation (the “Company”), and Ron Vachris (“Executive”). WHEREAS, Executive will be employed as the Company’s President and Chief Executive Officer effective January 1, 2024 and is expecte

December 20, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended November 26, 2023 or ☐ TRANSITION REPORT PURSUA

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended November 26, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 0-20355 Costco Wholesale Corporation (Exact

December 14, 2023 EX-99.1

COSTCO WHOLESALE CORPORATION REPORTS FIRST QUARTER FISCAL YEAR 2024 OPERATING RESULTS AND ANNOUNCES A SPECIAL CASH DIVIDEND OF $15 PER SHARE

Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION REPORTS FIRST QUARTER FISCAL YEAR 2024 OPERATING RESULTS AND ANNOUNCES A SPECIAL CASH DIVIDEND OF $15 PER SHARE ISSAQUAH, Wash., December 14, 2023 - Costco Wholesale Corporation (“Costco” or the “Company”) (Nasdaq: COST) today announced its operating results for the first quarter (twelve weeks) of fiscal 2024, ended November 26, 2023. For the

December 14, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition, Other Events

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): December 13, 2023 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Com

December 7, 2023 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as Permitted by Rule 14a-6(e)(2)) ☒ Defin

December 7, 2023 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as Permitted by Rule 14a-6(e)(2)) ☐ Defin

November 24, 2023 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

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): November 17, 2023 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Com

November 24, 2023 EX-99.1

Costco Wholesale Corporation Executive Bonus Plan

Exhibit 10.1 Costco Wholesale Corporation Executive Bonus Plan For fiscal year 2024, executive officers other than the Chief Executive Officer and the President are eligible for a total bonus of up to $232,000. This amount includes $80,000 based on the achievement of targets relating to sales and $80,000 based on the achievement of targets relating to pre-tax income. The potential payment attribut

October 20, 2023 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Other Events

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 18, 2023 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Comm

October 20, 2023 EX-99.1

COSTCO WHOLESALE CORPORATION ANNOUNCES CRAIG JELINEK WILL STEP DOWN AS CEO, RON VACHRIS ELECTED AS NEW CEO; AND QUARTERLY CASH DIVIDEND DECLARED

Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION ANNOUNCES CRAIG JELINEK WILL STEP DOWN AS CEO, RON VACHRIS ELECTED AS NEW CEO; AND QUARTERLY CASH DIVIDEND DECLARED ISSAQUAH, Wash., October 18, 2023 - Costco Wholesale Corporation (“Costco” or the “Company”) (Nasdaq: COST) announced today that Craig Jelinek has confirmed his intention to step down as Chief Executive Officer, effective Januar

October 11, 2023 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended September 3, 2023 ☐ TRANSITION REPORT PURSUANT TO SECTI

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended September 3, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 0-20355 Costco Wholesale Corporation (Exact name of

October 11, 2023 EX-21.1

Subsidiaries of the Company

Exhibit 21.1 SUBSIDIARIES OF THE COMPANY The following is a list of subsidiaries of the Company as of September 3, 2023, omitting subsidiaries which, considered in the aggregate, would not constitute a significant subsidiary. Subsidiaries State or Other Jurisdiction of Incorporation or Organization Name under Which Subsidiary Does Business Costco Wholesale Membership, Inc. California Costco Wholes

October 11, 2023 EX-10.8

Twelfth Amendment to Citi, N.A. Co-Branded Credit Card Agreement

Exhibit 10.8.12 Certain confidential information contained in this document, indicated by the mark “[*]”, has been omitted because it is both (i) not material and (ii) customarily and actually treated as private or confidential TWELFTH AMENDMENT TO THE CO-BRANDED CREDIT CARD PROGRAM AGREEMENT This Twelfth Amendment ("Amendment") is between Citibank, N.A. ("Bank") and Costco Wholesale Corporation (

September 26, 2023 8-K

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): September 26, 2023 COSTCO WHOLESA

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): September 26, 2023 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Co

September 26, 2023 EX-99.1

COSTCO WHOLESALE CORPORATION REPORTS FOURTH QUARTER AND FISCAL YEAR 2023 OPERATING RESULTS

Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION REPORTS FOURTH QUARTER AND FISCAL YEAR 2023 OPERATING RESULTS ISSAQUAH, Wash., September 26, 2023 - Costco Wholesale Corporation (“Costco” or the “Company”) (Nasdaq: COST) today announced its operating results for the 17-week fourth quarter and the 53-week fiscal year ended September 3, 2023. Net sales for the 17-week fourth quarter were $77.

August 17, 2023 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

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): August 16, 2023 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Commi

August 17, 2023 EX-99.1

COSTCO WHOLESALE CORPORATION ANNOUNCES NEW BOARD MEMBER

Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION ANNOUNCES NEW BOARD MEMBER ISSAQUAH, Wash., August 16, 2023 - Costco Wholesale Corporation (“Costco” or the “Company”) (Nasdaq: COST) today announced the election to its Board of Directors of Helena Buonanno Foulkes. Most recently, Ms. Foulkes was CEO of Hudson's Bay Company. Previously she spent 25 years at CVS Health, including as President

August 10, 2023 8-K

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): August 9, 2023 COSTCO WHOLESALE C

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): August 9, 2023 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Commis

August 10, 2023 EX-99.1

COSTCO WHOLESALE CORPORATION ANNOUNCES QUARTERLY CASH DIVIDEND

Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION ANNOUNCES QUARTERLY CASH DIVIDEND ISSAQUAH, Wash., August 9, 2023 - Costco Wholesale Corporation (“Costco” or the “Company”) (Nasdaq: COST) today announced that its Board of Directors has declared a quarterly cash dividend on Costco common stock of $1.02 per share. The quarterly dividend is payable September 8, 2023, to shareholders of record

August 10, 2023 EX-3.2

Bylaws as amended of Costco Wholesale Corporation

Exhibit 3.2 BYLAWS OF COSTCO WHOLESALE CORPORATION TABLE OF CONTENTS Page ARTICLE 1 OFFICES 1 1.1 REGISTERED OFFICE AND REGISTERED AGENT 1 1.2 OFFICES 1 ARTICLE 2 SHAREHOLDERS 1 2.1 ANNUAL MEETING 1 2.2 SPECIAL MEETINGS 5 2.3 NOTICE OF MEETINGS 6 (a) NOTICE OF SPECIAL MEETING 7 (b) PROPOSED ARTICLES OF AMENDMENT OR DISSOLUTION 7 (c) PROPOSED MERGER, CONSOLIDATION, EXCHANGE, SALE, LEASE OR DISPOSIT

June 29, 2023 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K ☒ 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(

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 ——————————————————— FORM 11-K ——————————————————— ☒ 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

June 1, 2023 EX-25.1

Statement of Eligibility of Trustee.

EX-25.1 Exhibit 25.1 SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE ☐ Check if an Application to Determine Eligibility of a Trustee Pursuant to Section 305(b)(2) U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION (Exact name of Trustee as specified in its charter) 91-1821036

June 1, 2023 S-3ASR

As filed with the Securities and Exchange Commission on June 1, 2023

S-3ASR Table of Contents As filed with the Securities and Exchange Commission on June 1, 2023 Registration No.

June 1, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended May 7, 2023 or ☐ TRANSITION REPORT PURSUANT TO

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended May 7, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 0-20355 Costco Wholesale Corporation (Exact name o

June 1, 2023 EX-FILING FEES

Filing Fee Table

EX-FILING FEES Exhibit 107 Calculation of Filing Fee Tables Form S-3 (Form Type) COSTCO WHOLESALE CORPORATION (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule (1) Amount Registered (2) Proposed Maximum Offering Price Per Unit (2) Maximum Aggregate Offering Price (2)

May 25, 2023 8-K

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): May 25, 2023 COSTCO WHOLESALE COR

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): May 25, 2023 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Commissi

May 25, 2023 EX-99.1

COSTCO WHOLESALE CORPORATION REPORTS THIRD QUARTER AND YEAR-TO-DATE OPERATING RESULTS FOR FISCAL YEAR 2023

Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION REPORTS THIRD QUARTER AND YEAR-TO-DATE OPERATING RESULTS FOR FISCAL YEAR 2023 ISSAQUAH, Wash., May 25, 2023 - Costco Wholesale Corporation (“Costco” or the “Company”) (Nasdaq: COST) today announced its operating results for the third quarter (twelve weeks) and the first 36 weeks of fiscal 2023, ended May 7, 2023. Net sales for the quarter inc

May 24, 2023 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT Costco Wholesale Corporation (Exact name of the registrant as specified in its charter) Washington 000-20355 (State or other jurisdiction of

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT Costco Wholesale Corporation (Exact name of the registrant as specified in its charter) Washington 000-20355 (State or other jurisdiction of incorporation or organization) (Commission File Number) 999 Lake Drive, Issaquah, WA 98027 (Address of principal executive offices) (Zip code) John S

May 24, 2023 EX-1.01

Exhibit 1.01 - Conflict Min

Conflict Minerals Report of Costco Wholesale Corporation Reporting Year 2022 This Conflict Mineral Report (CMR) of Costco Wholesale Corporation (Costco or the Company) is made for calendar year 2022.

April 19, 2023 8-K

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): April 19, 2023 COSTCO WHOLESALE C

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): April 19, 2023 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Commis

April 19, 2023 EX-99.1

COSTCO WHOLESALE CORPORATION ANNOUNCES AN INCREASE IN ITS QUARTERLY CASH DIVIDEND

Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION ANNOUNCES AN INCREASE IN ITS QUARTERLY CASH DIVIDEND ISSAQUAH, Wash., April 19, 2023 - Costco Wholesale Corporation (“Costco” or the “Company”) (Nasdaq: COST) today announced that its Board of Directors has declared a quarterly cash dividend on Costco common stock and approved a quarterly increase from 90 cents to $1.02 per share, $4.08 on an

March 9, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended February 12, 2023 or ☐ TRANSITION REPORT PURSUA

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended February 12, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 0-20355 Costco Wholesale Corporation (Exact

March 9, 2023 EX-10.1

Eleventh Amendment to Citi, N.A. Co-Branded Credit Card Agreement

Exhibit 10.1 ELEVENTH AMENDMENT TO THE CO-BRANDED CREDIT CARD PROGRAM AGREEMENT This Eleventh Amendment ("Amendment") is between Citibank, N.A. ("Bank") and Costco Wholesale Corporation ("Costco"), is effective as of February 6, 2023, and amends that certain Co-Branded Credit Card Program Agreement, by and between Bank and Costco, dated February 27, 2015 (the "Agreement"). Pursuant to Section 16.1

March 3, 2023 8-K

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): March 2, 2023 COSTCO WHOLESALE CO

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): March 2, 2023 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Commiss

March 3, 2023 EX-99.1

COSTCO WHOLESALE CORPORATION REPORTS SECOND QUARTER AND YEAR-TO-DATE OPERATING RESULTS FOR FISCAL YEAR 2023 AND FEBRUARY SALES RESULTS

Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION REPORTS SECOND QUARTER AND YEAR-TO-DATE OPERATING RESULTS FOR FISCAL YEAR 2023 AND FEBRUARY SALES RESULTS ISSAQUAH, Wash., March 2, 2023 - Costco Wholesale Corporation (“Costco” or the “Company”) (Nasdaq: COST) today announced its operating results for the second quarter (twelve weeks) and the first 24 weeks of fiscal 2023, ended February 12,

February 9, 2023 SC 13G/A

COST / Costco Wholesale Corporation / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 8)* Name of issuer: Costco Wholesale Corp. Title of Class of Securities: Common Stock CUSIP Number: 22160K105 Date of Event Which Requires Filing of this Statement: December 30, 2022 Check the appropriate box to designate the rule pursuant to which this Schedule is filed

January 25, 2023 8-K

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): January 19, 2023 COSTCO WHOLESALE

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): January 19, 2023 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Comm

January 19, 2023 EX-99.1

COSTCO WHOLESALE CORPORATION ANNOUNCES REAUTHORIZATION OF STOCK REPURCHASE PROGRAM AND QUARTERLY CASH DIVIDEND

Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION ANNOUNCES REAUTHORIZATION OF STOCK REPURCHASE PROGRAM AND QUARTERLY CASH DIVIDEND ISSAQUAH, Wash., January 19, 2023 - Costco Wholesale Corporation (“Costco” or the “Company”) (Nasdaq: COST) today announced that its Board of Directors has reauthorized a common stock repurchase program of up to $4 billion. This program will expire in January 20

January 19, 2023 8-K

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): January 19, 2023 COSTCO WHOLESALE

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): January 19, 2023 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Comm

December 29, 2022 EX-10.4

Tenth Amendment to Citi, N.A. Co-Branded Credit Card Agreement

Exhibit 10.4 TENTH AMENDMENT TO THE CO-BRANDED CREDIT CARD PROGRAM AGREEMENT This Tenth Amendment ("Amendment") is between Citibank, N.A. ("Bank") and Costco Wholesale Corporation ("Costco"), is effective as of November 11, 2022, and amends that certain Co-Branded Credit Card Program Agreement, by and between Bank and Costco, dated February 27, 2015 (the "Agreement"). Pursuant to Section 16.10 of

December 29, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended November 20, 2022 or ☐ TRANSITION REPORT PURSUA

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended November 20, 2022 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 0-20355 Costco Wholesale Corporation (Exact

December 29, 2022 EX-10.2

Extension of the Term of the Executive Employment Agreement, effective January 1, 2023, between W. Craig Jelinek and Costco Wholesale Corporation

Exhibit 10.2 December 14, 2022 Hamilton E. James Chairman of the Board Costco Wholesale Corporation RE: Executive Employment Agreement Dear Tony: As provided for under section 7(b) of the Executive Employment Agreement, effective January 1, 2017, between Costco Wholesale Corporation and me, this letter will confirm an extension of the term through and including December 31, 2023. Consistent with t

December 29, 2022 EX-10.3

Ninth Amendment to Citi, N.A. Co-Branded Credit Card Agreement

Exhibit 10.3 NINTH AMENDMENT TO THE CO-BRANDED CREDIT CARD PROGRAM AGREEMENT This Ninth Amendment ("Amendment") is between Citibank, N.A. ("Bank") and Costco Wholesale Corporation ("Costco"), is effective as of August 13, 2022, and amends that certain Co-Branded Credit Card Program Agreement, by and between Bank and Costco, dated February 27, 2015 (the "Agreement"). Pursuant to Section 16.10 of th

December 13, 2022 PX14A6G

Notice of Exempt Solicitation

Notice of Exempt Solicitation NAME OF REGISTRANT: Costco Wholesale Corporation NAME OF PERSONS RELYING ON EXEMPTION: Arjuna Capital ADDRESS OF PERSON RELYING ON EXEMPTION: 13 Elm St.

December 9, 2022 EX-99.1

COSTCO WHOLESALE CORPORATION REPORTS FIRST QUARTER FISCAL YEAR 2023 OPERATING RESULTS

Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION REPORTS FIRST QUARTER FISCAL YEAR 2023 OPERATING RESULTS ISSAQUAH, Wash., December 8, 2022 - Costco Wholesale Corporation (?Costco? or the ?Company?) (Nasdaq: COST) today announced its operating results for the first quarter (twelve weeks) of fiscal 2023, ended November 20, 2022. Net sales for the first quarter increased 8.1 percent, to $53.4

December 9, 2022 8-K

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): December 8, 2022 COSTCO WHOLESALE

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): December 8, 2022 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Comm

December 6, 2022 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as Permitted by Rule 14a-6(e)(2)) ☐ Defin

December 6, 2022 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as Permitted by Rule 14a-6(e)(2)) ☒ Defin

November 9, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

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): November 7, 2022 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Comm

November 9, 2022 EX-10.1

Fiscal 2023 Executive Bonus Plan

Exhibit 10.1 Costco Wholesale Corporation Executive Bonus Plan For fiscal year 2023, executive officers other than the Chief Executive Officer and the President are eligible for a bonus of up to approximately $232,000. This amount includes $80,000 based on the achievement of specified targets relating to sales and $80,000 based on the achievement of specified targets relating to pre-tax income. Th

October 12, 2022 8-K

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 12, 2022 COSTCO WHOLESALE

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 12, 2022 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Comm

October 12, 2022 EX-99.1

COSTCO WHOLESALE CORPORATION ANNOUNCES QUARTERLY CASH DIVIDEND

EX-99.1 Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION ANNOUNCES QUARTERLY CASH DIVIDEND ISSAQUAH, Wash., October 12, 2022—Costco Wholesale Corporation (“Costco” or the “Company”) (Nasdaq: COST) today announced that its Board of Directors has declared a quarterly cash dividend on Costco common stock of 90 cents per share. The quarterly dividend is payable November 10, 2022, to shareholder

October 5, 2022 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended August 28, 2022 ☐ TRANSITION REPORT PURSUANT TO SECTION

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended August 28, 2022 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 0-20355 Costco Wholesale Corporation (Exact name of re

October 5, 2022 EX-4.8

Description of Common Stock

Exhibit 4.8 DESCRIPTION OF THE REGISTRANT?S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 The following description of the Company?s common stock is based upon the Company?s Articles of Incorporation, as amended (?Articles?), the Company?s Bylaws, as amended (?Bylaws?), and applicable provisions of law. We have summarized certain portions of our Articles and B

October 5, 2022 EX-21.1

Subsidiaries of the Company

Exhibit 21.1 SUBSIDIARIES OF THE COMPANY The following is a list of subsidiaries of the Company as of August 28, 2022, omitting subsidiaries which, considered in the aggregate, would not constitute a significant subsidiary. Subsidiaries State or Other Jurisdiction of Incorporation or Organization Name under Which Subsidiary Does Business Costco Wholesale Membership, Inc. California Costco Wholesal

October 5, 2022 EX-3.1

Articles of Incorporation as amended of Costco Wholesale Corporation

Exhibit 3.1 ARTICLES OF AMENDMENT AND RESTATEMENT OF THE ARTICLES OF INCORPORATION OF COSTCO WHOLESALE CORPORATION ARTICLE I The name of this corporation is: COSTCO WHOLESALE CORPORATION ARTICLE II 2.1 Classes. The total number of shares of all classes of stock which this corporation shall have authority to issue is one billion (1,000,000,000), consisting of: (a) Nine hundred million (900,000,000)

September 23, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): September 22, 2022 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Co

September 23, 2022 EX-99.1

COSTCO WHOLESALE CORPORATION REPORTS FOURTH QUARTER AND FISCAL YEAR 2022 OPERATING RESULTS

Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION REPORTS FOURTH QUARTER AND FISCAL YEAR 2022 OPERATING RESULTS ISSAQUAH, Wash., September 22, 2022 - Costco Wholesale Corporation (?Costco? or the ?Company?) (Nasdaq: COST) today announced its operating results for the 16-week fourth quarter and the 52-week fiscal year, ended August 28, 2022. Net sales for the quarter increased 15.2 percent, t

July 13, 2022 8-K

Other Events

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): July 13, 2022 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Commiss

July 13, 2022 EX-99.1

COSTCO WHOLESALE CORPORATION ANNOUNCES QUARTERLY CASH DIVIDEND

Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION ANNOUNCES QUARTERLY CASH DIVIDEND ISSAQUAH, Wash., July 13, 2022 - Costco Wholesale Corporation (?Costco? or the ?Company?) (Nasdaq: COST) today announced that its Board of Directors has declared a quarterly cash dividend on Costco common stock of 90 cents per share. The quarterly dividend is payable August 12, 2022, to shareholders of record

June 29, 2022 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K ☒ ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 ☐ TRANSITION REPORT PURSUANT TO SECTION 15(

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 ??????????????????? FORM 11-K ??????????????????? ? ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 ? TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File

June 2, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended May 8, 2022 or ☐ TRANSITION REPORT PURSUANT TO

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended May 8, 2022 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 0-20355 Costco Wholesale Corporation (Exact name o

June 2, 2022 EX-3.2

Bylaws as amended of Costco Wholesale Corporation

Exhibit 3.2 BYLAWS OF COSTCO WHOLESALE CORPORATION Article 1 Offices 1 1.1 Principal Office 1 1.2 Registered Office and Registered Agent 1 1.3 Other Offices 1 Article 2 Shareholders 1 2.1 Annual Meeting 1 2.2 Special Meetings 4 2.3 Notice of Meetings 5 (a) Notice of Special Meeting 6 (b) Proposed Articles of Amendment or Dissolution 6 (c) Proposed Merger, Consolidation, Exchange, Sale, Lease or Di

May 26, 2022 EX-99.1

COSTCO WHOLESALE CORPORATION REPORTS THIRD QUARTER AND YEAR-TO-DATE OPERATING RESULTS FOR FISCAL 2022

Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION REPORTS THIRD QUARTER AND YEAR-TO-DATE OPERATING RESULTS FOR FISCAL 2022 ISSAQUAH, Wash., May 26, 2022?Costco Wholesale Corporation (?Costco? or the ?Company?) (Nasdaq: COST) today announced its operating results for the third quarter (twelve weeks) and the first 36 weeks of fiscal 2022, ended May 8, 2022. Net sales for the quarter increased

May 26, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): May 26, 2022 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Commissi

May 18, 2022 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT Costco Wholesale Corporation (Exact name of the registrant as specified in its charter) Washington 000-20355 (State or other jurisdiction of

SD 1 a2021formsd.htm SD UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT Costco Wholesale Corporation (Exact name of the registrant as specified in its charter) Washington 000-20355 (State or other jurisdiction of incorporation or organization) (Commission File Number) 999 Lake Drive, Issaquah, WA 98027 (Address of principal executive of

May 6, 2022 8-K

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

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): May 4, 2022 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Commissio

April 22, 2022 CORRESP

April 22, 2022

Writer?s Direct Number: (425) 313-8203 Fax: (425) 313-6593 April 22, 2022 BY EDGAR Robert Shapiro and Theresa Brillant Division of Corporation Finance Office of Trade & Services Securities and Exchange Commission 100 F Street N.

April 13, 2022 EX-99.1

COSTCO WHOLESALE CORPORATION ANNOUNCES AN INCREASE IN ITS QUARTERLY CASH DIVIDEND

Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION ANNOUNCES AN INCREASE IN ITS QUARTERLY CASH DIVIDEND ISSAQUAH, Wash., April 13, 2022?Costco Wholesale Corporation (?Costco? or the ?Company?) (Nasdaq: COST) today announced that its Board of Directors has declared a quarterly cash dividend on Costco common stock and approved a quarterly increase from 79 to 90 cents per share, $3.60 on an annu

April 13, 2022 8-K

Other Events

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): April 13, 2022 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Commis

March 10, 2022 EX-10.1

Eighth Amendment to Citi, N.A. Co-Branded Credit Card Agreement

Exhibit 10.1 EIGHTH AMENDMENT TO THE CO-BRANDED CREDIT CARD PROGRAM AGREEMENT This Eighth Amendment ("Amendment") is between Citibank, N.A. ("Bank") and Costco Wholesale Corporation ("Costco"), is effective as of December 1, 2021, and amends that certain Co-Branded Credit Card Program Agreement, by and between Bank and Costco, dated February 27, 2015 (the "Agreement"). Pursuant to Section 16.10 of

March 10, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended February 13, 2022 or ☐ TRANSITION REPORT PURSUA

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended February 13, 2022 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 0-20355 Costco Wholesale Corporation (Exact

March 9, 2022 8-K

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

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): March 7, 2022 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Commiss

March 4, 2022 EX-99.1

COSTCO WHOLESALE CORPORATION REPORTS SECOND QUARTER AND YEAR-TO-DATE OPERATING RESULTS FOR FISCAL 2022 AND FEBRUARY SALES RESULTS

Exhibit 99.1 COSTCO WHOLESALE CORPORATION REPORTS SECOND QUARTER AND YEAR-TO-DATE OPERATING RESULTS FOR FISCAL 2022 AND FEBRUARY SALES RESULTS ISSAQUAH, Wash., March 3, 2022 - Costco Wholesale Corporation (?Costco? or the ?Company?) (Nasdaq: COST) today announced its operating results for the second quarter (twelve weeks) and the first 24 weeks of fiscal 2022, ended February 13, 2022. Net sales fo

March 4, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): March 3, 2022 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Commiss

February 9, 2022 SC 13G/A

COST / Costco Wholesale Corporation / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 7)* Name of issuer: Costco Wholesale Corp. Title of Class of Securities: Common Stock CUSIP Number: 22160K105 Date of Event Which Requires Filing of this Statement: December 31, 2021 Check the appropriate box to designate the rule pursuant to which this Schedule is filed

February 3, 2022 8-K

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

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): February 2, 2022 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Comm

January 25, 2022 8-K

Submission of Matters to a Vote of Security Holders

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): January 20, 2022 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Comm

January 20, 2022 EX-99.1

COSTCO WHOLESALE CORPORATION ANNOUNCES QUARTERLY CASH DIVIDEND

Exhibit 99.1 COSTCO WHOLESALE CORPORATION ANNOUNCES QUARTERLY CASH DIVIDEND ISSAQUAH, Wash., January 20, 2022 - Costco Wholesale Corporation (?Costco? or the ?Company?) (Nasdaq: COST) today announced that its Board of Directors has declared a quarterly cash dividend on Costco common stock of 79 cents per share. The quarterly dividend is payable February 18, 2022, to shareholders of record at the c

January 20, 2022 8-K

Other Events

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): January 20, 2022 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Comm

January 14, 2022 PX14A6G

United States Securities and Exchange Commission Washington, D.C. 20549 Notice of Exempt Solicitation Pursuant to Rule 14a-103

United States Securities and Exchange Commission Washington, D.C. 20549 Notice of Exempt Solicitation Pursuant to Rule 14a-103 Name of the Registrant: Costco Wholesale Corporation Name of persons relying on exemption: American Baptist Home Mission Society, Franciscan Sisters of Perpetual Adoration, and Trinity Health Address of persons relying on exemption: Investor Advocates for Social Justice (f

January 13, 2022 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ? Filed by a party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as Permitted by Rule 14a-6(e)(2)) ? Defin

December 22, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended November 21, 2021 or ☐ TRANSITION REPORT PURSUA

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended November 21, 2021 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 0-20355 Costco Wholesale Corporation (Exact

December 22, 2021 EX-10.2

Extension of the Term of the Executive Employment Agreement effective January 1, 2022, between W. Craig Jelinek and Costco Wholesale Corporation

Exhibit 10.2 November 22, 2021 Hamilton E. James Chairman of the Board Costco Wholesale Corporation RE: Executive Employment Agreement Dear Tony: As provided for under section 7(b) of the Executive Employment Agreement, effective January 1, 2017, between Costco Wholesale Corporation and me, this letter will confirm an extension of the term through and including December 31, 2022. Consistent with t

December 15, 2021 PX14A6G

Shareholder Proposal No. 5 on Costco Wholesale Corporation’s 2022 Proxy Statement: Adopt GHG Emissions Reduction Targets Costco Wholesale Corporation Symbol: COST Filed by: Green Century Balanced Fund

NAME OF REGISTRANT: Costco Wholesale Corporation NAME OF PERSON RELYING ON EXEMPTION: Green Century Balanced Fund ADDRESS OF PERSON RELYING ON EXEMPTION: 114 State Street, Suite 200, Boston, MA 02109 Written materials are submitted pursuant to Rule 14a-6(g)(1) promulgated under the Securities Exchange Act of 1934.

December 10, 2021 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

DEFA14A 1 costdefproxy2021additional.htm DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commissio

December 10, 2021 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ? Filed by a party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as Permitted by Rule 14a-6(e)(2)) ? Defin

December 9, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): December 9, 2021 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Comm

December 9, 2021 EX-99.1

COSTCO WHOLESALE CORPORATION REPORTS FIRST QUARTER FISCAL YEAR 2022 OPERATING RESULTS

Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION REPORTS FIRST QUARTER FISCAL YEAR 2022 OPERATING RESULTS ISSAQUAH, Wash., December 9, 2021 - Costco Wholesale Corporation (?Costco? or the ?Company?) (Nasdaq: COST) today announced its operating results for the first quarter (twelve weeks) of fiscal 2022, ended November 21, 2021. Net sales for the first quarter increased 16.7 percent, to $49.

November 10, 2021 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

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): November 8, 2021 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Comm

November 10, 2021 EX-10.1

Fiscal 2021 Executive Bonus Plan

Exhibit 10.1 Costco Wholesale Corporation Executive Bonus Plan For fiscal year 2022, executive officers other than the Chief Executive Officer are eligible for a bonus of up to approximately $232,000. This amount includes $80,000 based on the achievement of specified targets relating to sales and $80,000 based on the achievement of specified targets relating to pre-tax income. The potential paymen

October 13, 2021 EX-99.1

COSTCO WHOLESALE CORPORATION ANNOUNCES QUARTERLY CASH DIVIDEND

Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION ANNOUNCES QUARTERLY CASH DIVIDEND ISSAQUAH, Wash., October 13, 2021 - Costco Wholesale Corporation (?Costco? or the ?Company?) (Nasdaq: COST) today announced that its Board of Directors has declared a quarterly cash dividend on Costco common stock of 79 cents per share. The quarterly dividend is payable November 12, 2021, to shareholders of r

October 13, 2021 8-K

Other Events

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, 2021 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Comm

October 6, 2021 EX-21.1

Subsidiaries of the Company

Exhibit 21.1 SUBSIDIARIES OF THE COMPANY The following is a list of subsidiaries of the Company as of August 29, 2021, omitting subsidiaries which, considered in the aggregate, would not constitute a significant subsidiary. Subsidiaries State or Other Jurisdiction of Incorporation or Organization Name under Which Subsidiary Does Business Costco Wholesale Membership, Inc. California Costco Wholesal

October 6, 2021 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended August 29, 2021 ☐ TRANSITION REPORT PURSUANT TO SECTION

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended August 29, 2021 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 0-20355 Costco Wholesale Corporation (Exact name of re

September 23, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): September 23, 2021 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Co

September 23, 2021 EX-99.1

COSTCO WHOLESALE CORPORATION REPORTS FOURTH QUARTER AND FISCAL YEAR 2021 OPERATING RESULTS

Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION REPORTS FOURTH QUARTER AND FISCAL YEAR 2021 OPERATING RESULTS ISSAQUAH, Wash., September 23, 2021 - Costco Wholesale Corporation (?Costco? or the ?Company?) (Nasdaq: COST) today announced its operating results for the 16-week fourth quarter and the 52-week fiscal year, ended August 29, 2021. Net sales for the quarter increased 17.5 percent, t

September 3, 2021 8-K

Current Report

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): August 30, 2021 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Commi

July 14, 2021 EX-99.1

COSTCO WHOLESALE CORPORATION ANNOUNCES QUARTERLY CASH DIVIDEND

Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION ANNOUNCES QUARTERLY CASH DIVIDEND ISSAQUAH, Wash., July 13, 2021 - Costco Wholesale Corporation (?Costco? or the ?Company?) (Nasdaq: COST) today announced that its Board of Directors has declared a quarterly cash dividend on Costco common stock of 79 cents per share. The quarterly dividend is payable August 13, 2021, to shareholders of record

July 14, 2021 8-K

Financial Statements and Exhibits, Other Events

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): July 13, 2021 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Commiss

June 25, 2021 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K ☒ ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 ☐ TRANSITION REPORT PURSUANT TO SECTION 15(

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 ??????????????????? FORM 11-K ??????????????????? ? ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 ? TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File

June 3, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended May 9, 2021 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 0-20355 Costco Wholesale Corporation (Exact name o

May 27, 2021 EX-99.1

COSTCO WHOLESALE CORPORATION REPORTS THIRD QUARTER AND YEAR-TO-DATE OPERATING RESULTS FOR FISCAL 2021

Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION REPORTS THIRD QUARTER AND YEAR-TO-DATE OPERATING RESULTS FOR FISCAL 2021 ISSAQUAH, Wash., May 27, 2021 - Costco Wholesale Corporation (?Costco? or the ?Company?) (Nasdaq: COST) today announced its operating results for the third quarter (twelve weeks) and the first 36 weeks of fiscal 2021, ended May 9, 2021. Net sales for the quarter increase

May 27, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): May 27, 2021 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Commissi

May 12, 2021 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT Costco Wholesale Corporation (Exact name of the registrant as specified in its charter) Washington 000-20355 91-1223280 (State or other juri

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT Costco Wholesale Corporation (Exact name of the registrant as specified in its charter) Washington 000-20355 91-1223280 (State or other jurisdiction of incorporation or organization) (Commission File Number) (IRS Employer Identification No) 999 Lake Drive, Issaquah, WA 98027 (Address of pr

April 14, 2021 EX-99.1

COSTCO WHOLESALE CORPORATION ANNOUNCES AN INCREASE IN ITS QUARTERLY CASH DIVIDEND

EX-99.1 Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION ANNOUNCES AN INCREASE IN ITS QUARTERLY CASH DIVIDEND ISSAQUAH, Wash., April 14, 2021 - Costco Wholesale Corporation (“Costco” or the “Company”) (Nasdaq: COST) today announced that its Board of Directors has declared a quarterly cash dividend on Costco common stock and approved a quarterly increase from 70 to 79 cents per share, or $3.

April 14, 2021 8-K

Financial Statements and Exhibits, Other Events

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): April 14, 2021 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Commis

March 10, 2021 EX-10.1

Seventh Amendment to Citi, N.A. Co-Branded Credit Card Agreement

Exhibit 10.1 SEVENTH AMENDMENT TO THE CO-BRANDED CREDIT CARD PROGRAM AGREEMENT This Seventh Amendment (?Amendment?) is between Citibank, N.A. (?Bank?) and Costco Wholesale Corporation (?Costco?), is effective as of January 4th, 2021, and amends that certain Co-Branded Credit Card Program Agreement, by and between Bank and Costco, dated February 27, 2015 (the ?Agreement?). Pursuant to Section 16.10

March 10, 2021 10-Q

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended February 14, 2021 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 0-20355 Costco Wholesale Corporation (Exact

March 4, 2021 EX-99.1

COSTCO WHOLESALE CORPORATION REPORTS SECOND QUARTER AND YEAR-TO-DATE OPERATING RESULTS FOR FISCAL 2021 AND FEBRUARY SALES RESULTS

EX-99.1 Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION REPORTS SECOND QUARTER AND YEAR-TO-DATE OPERATING RESULTS FOR FISCAL 2021 AND FEBRUARY SALES RESULTS ISSAQUAH, Wash., March 4, 2021—Costco Wholesale Corporation (“Costco” or the “Company”) (Nasdaq: COST) today announced its operating results for the second quarter (twelve weeks) and the first 24 weeks of fiscal 2021, ended February 14

March 4, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): March 4, 2021 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Commiss

February 10, 2021 SC 13G/A

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 6)*

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 6)* Name of issuer: Costco Wholesale Corp. Title of Class of Securities: Common Stock CUSIP Number: 22160K105 Date of Event Which Requires Filing of this Statement: December 31, 2020 Check the appropriate box to designate the rule pursuant to which this Schedule is filed

January 26, 2021 8-K

Submission of Matters to a Vote of Security Holders - 8-K

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): January 21, 2021 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Comm

January 26, 2021 EX-99.1

COSTCO WHOLESALE CORPORATION ANNOUNCES QUARTERLY CASH DIVIDEND

EX-99.1 Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION ANNOUNCES QUARTERLY CASH DIVIDEND ISSAQUAH, Wash., January 21, 2021 - Costco Wholesale Corporation (“Costco” or the “Company”) (Nasdaq: COST) today announced that its Board of Directors has declared a quarterly cash dividend on Costco common stock of 70 cents per share. The quarterly dividend is payable February 19, 2021, to sharehold

January 25, 2021 8-K

Financial Statements and Exhibits, Other Events - 8-K

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): January 21, 2021 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Comm

December 16, 2020 S-8

- S-8

S-8 As filed with the Securities and Exchange Commission on December 16, 2020 Registration No.

December 16, 2020 10-Q

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended November 22, 2020 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 0-20355 Costco Wholesale Corporation (Exact

December 16, 2020 EX-10.2

Extension of the Term of the Executive Employment Agreement, effective January 1, 2021, between W. Craig Jelinek and Costco Wholesale Corporation

Exhibit 10.2 December 3, 2020 Hamilton E. James Chairman of the Board Costco Wholesale Corporation RE: Executive Employment Agreement Dear Tony: As provided for under section 7(b) of the Executive Employment Agreement, effective January 1, 2017, between Costco Wholesale Corporation and me, this letter will confirm an extension of the term through and including December 31, 2021. Consistent with th

December 10, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition - 8-K

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): December 10, 2020 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Com

December 10, 2020 EX-99.1

COSTCO WHOLESALE CORPORATION REPORTS FIRST QUARTER FISCAL YEAR 2021 OPERATING RESULTS

EX-99.1 Exhibit 99.1 COSTCO WHOLESALE CORPORATION REPORTS FIRST QUARTER FISCAL YEAR 2021 OPERATING RESULTS ISSAQUAH, Wash., December 10, 2020 - Costco Wholesale Corporation (“Costco” or the “Company”) (Nasdaq: COST) today announced its operating results for the first quarter (twelve weeks) of fiscal 2021, ended November 22, 2020. Net sales for the first quarter increased 16.9 percent, to $42.35 bi

December 10, 2020 DEF 14A

- DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as Permitted by Rule 14a-6(e)(2)) ☒ Defin

December 10, 2020 DEFA14A

- DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as Permitted by Rule 14a-6(e)(2)) ☐ Defin

November 18, 2020 EX-99.1

COSTCO WHOLESALE CORPORATION DECLARES SPECIAL CASH DIVIDEND OF $10 PER SHARE

EX-99.1 Exhibit 99.1 COSTCO WHOLESALE CORPORATION DECLARES SPECIAL CASH DIVIDEND OF $10 PER SHARE ISSAQUAH, Wash., Nov. 16, 2020 - Costco Wholesale Corporation (“Costco” or the “Company”) (Nasdaq: COST) announced today that its Board of Directors has declared a special cash dividend on Costco common stock of $10 per share, payable December 11, 2020, to shareholders of record as of the close of bus

November 18, 2020 8-K

- 8-K

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): November 16, 2020 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Com

October 15, 2020 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits - 8-K

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, 2020 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Comm

October 15, 2020 EX-10.1

Executive Bonus Plan

EX-10.1 Exhibit 10.1 Costco Wholesale Corporation Executive Bonus Plan For fiscal year 2021, executive officers other than the Chief Executive Officer are eligible for a bonus of up to approximately $80,000. The final bonus amounts are subject to the approval of the Compensation Committee. Eligibility for up to 50% of the bonus amount is determined by whether the Company has met its pre-tax income

October 14, 2020 8-K

Financial Statements and Exhibits, Other Events - 8-K

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 14, 2020 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Comm

October 14, 2020 EX-99.1

COSTCO WHOLESALE CORPORATION ANNOUNCES QUARTERLY CASH DIVIDEND

EX-99.1 Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION ANNOUNCES QUARTERLY CASH DIVIDEND ISSAQUAH, Wash., October 14, 2020—Costco Wholesale Corporation (“Costco” or the “Company”) (Nasdaq: COST) today announced that its Board of Directors has declared a quarterly cash dividend on Costco common stock of 70 cents per share. The quarterly dividend is payable November 13, 2020, to shareholder

October 7, 2020 EX-4.8

Description of Common Stock

Exhibit 4.8 DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 The following description of the Company’s common stock is based upon the Company’s Articles of Incorporation, as amended (“Articles”), the Company’s Bylaws, as amended (“Bylaws”), and applicable provisions of law. We have summarized certain portions of our Articles and B

October 7, 2020 EX-21.1

Subsidiaries of the Company

Exhibit 21.1 SUBSIDIARIES OF THE COMPANY The following is a list of subsidiaries of the Company as of August 30, 2020, omitting subsidiaries which, considered in the aggregate, would not constitute a significant subsidiary. Subsidiaries State or Other Jurisdiction of Incorporation or Organization Name under Which Subsidiary Does Business Costco Wholesale Membership, Inc. California Costco Wholesal

October 7, 2020 10-K

Annual Report - 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended August 30, 2020 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 0-20355 Costco Wholesale Corporation (Exact name of re

September 24, 2020 EX-99.1

COSTCO WHOLESALE CORPORATION REPORTS FOURTH QUARTER AND FISCAL YEAR 2020 OPERATING RESULTS

EX-99.1 Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION REPORTS FOURTH QUARTER AND FISCAL YEAR 2020 OPERATING RESULTS ISSAQUAH, Wash., September 24, 2020 - Costco Wholesale Corporation (“Costco” or the “Company”) (Nasdaq: COST) today announced its operating results for the 16-week fourth quarter and the 52-week fiscal year, ended August 30, 2020. Net sales for the quarter increased 12.5 pe

September 24, 2020 8-K

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): September 24, 2020 COSTCO WHOLESA

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): September 24, 2020 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Co

September 16, 2020 8-K

- 8-K

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): September 11, 2020 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Co

September 16, 2020 EX-3.2

Amendments to Sections 3.3, 3.4, and 3.6 of the Bylaws of Costco Wholesale Corporation (to be effective and first apply with respect to the Company's 2022 Annual Meeting of Shareholders)

EX-3.2 Exhibit 3.2 Sections 3.3, 3.4 and 3.6 of the Bylaws of Costco Wholesale Corporation are amended and restated in their entirety as follows (to be effective and first apply with respect to the Company’s 2022 Annual Meeting of Shareholders). 3.3 ELECTION. Except as provided in Section 3.4, directors shall be elected at each annual meeting of shareholders, and each director so elected shall hol

July 16, 2020 EX-99.1

COSTCO WHOLESALE CORPORATION ANNOUNCES QUARTERLY CASH DIVIDEND

EX-99.1 Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION ANNOUNCES QUARTERLY CASH DIVIDEND ISSAQUAH, Wash., July 15, 2020 - Costco Wholesale Corporation (“Costco” or the “Company”) (Nasdaq: COST) today announced that its Board of Directors has declared a quarterly cash dividend on Costco common stock of 70 cents per share. The quarterly dividend is payable August 14, 2020, to shareholders o

July 16, 2020 8-K

Financial Statements and Exhibits, Other Events

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): July 15, 2020 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Commiss

June 26, 2020 11-K

- 11-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 ——————————————————— FORM 11-K ——————————————————— ☒ ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2019 ☐ TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File

June 4, 2020 10-Q

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended May 10, 2020 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 0-20355 Costco Wholesale Corporation (Exact name

May 28, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): May 28, 2020 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Commissi

May 28, 2020 EX-99.1

COSTCO WHOLESALE CORPORATION REPORTS THIRD QUARTER AND YEAR-TO-DATE OPERATING RESULTS FOR FISCAL 2020

EX-99.1 Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION REPORTS THIRD QUARTER AND YEAR-TO-DATE OPERATING RESULTS FOR FISCAL 2020 ISSAQUAH, Wash., May 28, 2020 - Costco Wholesale Corporation (“Costco” or the “Company”) (Nasdaq: COST) today announced its operating results for the third quarter (12 weeks) and the first 36 weeks of fiscal 2020, ended May 10, 2020. Net sales for the quarter inc

May 8, 2020 SD

- FORM SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT Costco Wholesale Corporation (Exact name of the registrant as specified in its charter) Washington 000-20355 91-1223280 (State or other jurisdiction of incorporation or organization) (Commission File Number) (IRS Employer Identification No) 999 Lake Drive, Issaquah, WA 98027 (Address of pr

April 17, 2020 EX-1.1

Underwriting Agreement, dated April 16, 2020, among the Company and Credit Suisse Securities (USA) LLC, BofA Securities, Inc. and Citigroup Global Markets Inc., as representatives of the underwriters named therein

EX-1.1 2 d903866dex11.htm EX-1.1 EXHIBIT 1.1 Execution Version Costco Wholesale Corporation 1.375% Senior Notes due 2027 1.600% Senior Notes due 2030 1.750% Senior Notes due 2032 Underwriting Agreement April 16, 2020 Credit Suisse Securities (USA) LLC BofA Securities, Inc. Citigroup Global Markets Inc. As representatives of the several Underwriters named in Schedule I hereto, c/o Credit Suisse Sec

April 17, 2020 EX-4.1

Form of 1.375% Senior Notes due June 20, 2027

EX-4.1 EXHIBIT 4.1 UNLESS THIS SECURITY IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION (THE “DEPOSITORY”), TO THE COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE TO BE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY

April 17, 2020 EX-4.2

Form of 1.600% Senior Notes due April 20, 2030

EX-4.2 EXHIBIT 4.2 UNLESS THIS SECURITY IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION (THE “DEPOSITORY”), TO THE COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE TO BE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY

April 17, 2020 424B5

CALCULATION OF REGISTRATION FEE Title of Each Class of Securities to be Registered Amount to be Registered Maximum Offering Price Per Unit Maximum Aggregate Offering Price Amount of Registration Fee(1)(2) 1.375% Notes due June 20, 2027 $1,250,000,000

424B5 Table of Contents Filed Pursuant to Rule 424(b)(5) Registration No. 333-237699 CALCULATION OF REGISTRATION FEE Title of Each Class of Securities to be Registered Amount to be Registered Maximum Offering Price Per Unit Maximum Aggregate Offering Price Amount of Registration Fee(1)(2) 1.375% Notes due June 20, 2027 $1,250,000,000 99.775% $1,247,187,500 $161,884.94 1.600% Notes due April 20, 20

April 17, 2020 8-K

Financial Statements and Exhibits, Other Events

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): April 16, 2020 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Commis

April 17, 2020 EX-4.3

Form of 1.750% Senior Notes due April 20, 2032

EX-4.3 EXHIBIT 4.3 UNLESS THIS SECURITY IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION (THE “DEPOSITORY”), TO THE COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE TO BE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY

April 16, 2020 424B5

Subject to completion, dated April 16, 2020

424B5 Table of Contents The information in this preliminary prospectus supplement is not complete and may be changed.

April 16, 2020 EX-99.1

COSTCO WHOLESALE CORPORATION ANNOUNCES AN INCREASE IN ITS QUARTERLY CASH DIVIDEND 4/15/2020 9:41 AM

EX-99.1 Exhibit 99.1 COSTCO WHOLESALE CORPORATION ANNOUNCES AN INCREASE IN ITS QUARTERLY CASH DIVIDEND 4/15/2020 9:41 AM ISSAQUAH, Wash., April 15, 2020 - Costco Wholesale Corporation (“Costco” or the “Company”) (Nasdaq: COST) today announced that its Board of Directors has declared a quarterly cash dividend on Costco common stock and approved a quarterly increase from 65 to 70 cents per share, or

April 16, 2020 8-K

Financial Statements and Exhibits, Other Events

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): April 15, 2020 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Commis

April 16, 2020 FWP

COSTCO WHOLESALE CORPORATION PRICING TERM SHEET April 16, 2020 7-Year Tranche (the “2027 Notes”) 10-Year Tranche (the “2030 Notes”) 12-Year Tranche (the “2032 Notes”) Issuer: Costco Wholesale Corporation Expected Ratings*: Aa3 (stable) / A+ (stable)

FWP Issuer Free Writing Prospectus Filed Pursuant to Rule 433 Relating to Preliminary Prospectus Supplement dated April 16, 2020 to Prospectus Dated April 15, 2020 Registration Statement No.

April 15, 2020 EX-25.1

Statement of Eligibility of Trustee.

EX-25.1 Exhibit 25.1 SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE ☐ Check if an Application to Determine Eligibility of a Trustee Pursuant to Section 305(b)(2) U.S. BANK NATIONAL ASSOCIATION (Exact name of Trustee as specified in its charter) 31-0841368 I.R.S. Employer

April 15, 2020 S-3ASR

COST / Costco Wholesale Corp. S-3ASR - - S-3ASR

S-3ASR Table of Contents As filed with the Securities and Exchange Commission on April 15, 2020 Registration No.

March 12, 2020 EX-3.1

Articles of Incorporation as amended of Costco Wholesale Corporation

Exhibit 3.1 ARTICLES OF AMENDMENT AND RESTATEMENT OF THE ARTICLES OF INCORPORATION OF COSTCO WHOLESALE CORPORATION ARTICLE I The name of this corporation is: COSTCO WHOLESALE CORPORATOIN ARTICLE II 2.1 Classes. The total number of shares of all classes of stock which this corporation shall have authority to issue is one billion (1,000,000,000), consisting of: (a) Nine hundred million (900,000,000)

March 12, 2020 10-Q

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended February 16, 2020 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 0-20355 Costco Wholesale Corporation (Exact

March 5, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): March 5, 2020 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Commiss

March 5, 2020 EX-99.1

COSTCO WHOLESALE CORPORATION REPORTS SECOND QUARTER AND YEAR-TO-DATE OPERATING RESULTS FOR FISCAL 2020 AND FEBRUARY SALES RESULTS

EX-99.1 Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION REPORTS SECOND QUARTER AND YEAR-TO-DATE OPERATING RESULTS FOR FISCAL 2020 AND FEBRUARY SALES RESULTS ISSAQUAH, Wash., March 5, 2020 - Costco Wholesale Corporation (“Costco” or the “Company”) (Nasdaq: COST) today announced its operating results for the second quarter (twelve weeks) and the first 24 weeks of fiscal 2020, ended February

February 12, 2020 SC 13G/A

COST / Costco Wholesale Corp. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 5)* Name of issuer: Costco Wholesale Corp Title of Class of Securities: Common Stock CUSIP Number: 22160K105 Date of Event Which Requires Filing of this Statement: December 31, 2019 Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

January 29, 2020 EX-3.2

Bylaws as amended of Costco Wholesale Corporation

EX-3.2 Exhibit 3.2 BYLAWS OF COSTCO WHOLESALE CORPORATION Article 1 Offices 1 1.1 Principal Office 1 1.2 Registered Office and Registered Agent 1 1.3 Other Offices 1 Article 2 Shareholders 1 2.1 Annual Meeting 1 2.2 Special Meetings 5 2.3 Notice of Meetings 6 (a) Notice of Special Meeting 7 (b) Proposed Articles of Amendment or Dissolution 8 (c) Proposed Merger, Consolidation, Exchange, Sale, Leas

January 29, 2020 8-K

Current Report

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): January 24, 2020 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Comm

January 28, 2020 8-K

Submission of Matters to a Vote of Security Holders

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): January 22, 2020 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Comm

January 24, 2020 EX-99.1

COSTCO WHOLESALE CORPORATION ANNOUNCES QUARTERLY CASH DIVIDEND

EX-99.1 Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION ANNOUNCES QUARTERLY CASH DIVIDEND ISSAQUAH, Wash., January 23, 2020 - Costco Wholesale Corporation (“Costco” or the “Company”) (Nasdaq: COST) today announced that its Board of Directors has declared a quarterly cash dividend on Costco common stock of 65 cents per share. The quarterly dividend is payable February 21, 2020, to sharehold

January 24, 2020 8-K

Financial Statements and Exhibits, Other Events

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): January 23, 2020 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Comm

December 23, 2019 EX-10.2.2

2019 Stock Incentive Plan Restricted Stock Unit Award Agreement - Non-U.S. Employee

Exhibit 10.2.2 COSTCO WHOLESALE CORPORATION RESTRICTED STOCK UNIT AWARD AGREEMENT NON-U.S. PARTICIPANTS 1.Grant of Stock Units. You are hereby granted Stock Units covering the number of shares of Costco Wholesale Corp. (the "Company") common stock (the “Shares”) specified in the Grant Detail made available electronically in connection with the grant (the “Detail”). By accepting this grant, the Emp

December 23, 2019 EX-10.3.1

Extension of the Term of the Executive Employment Agreement, effective January 1, 2020, between W. Craig Jelinek and Costco Wholesale Corporation

Exhibit 10.3 December 16, 2019 Hamilton E. James Chairman of the Board Costco Wholesale Corporation RE: Executive Employment Agreement Dear Tony: As provided for under section 7(b) of the Executive Employment Agreement, effective January 1, 2017, between Costco Wholesale Corporation and me, this letter will confirm an extension of the term through and including December 31, 2020, of the agreement

December 23, 2019 10-Q

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended November 24, 2019 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 0-20355 Costco Wholesale Corporation (Exact

December 23, 2019 EX-10.2.1

2019 Stock Incentive Plan Restricted Stock Unit Award Agreement-Employee

Exhibit 10.2.1 COSTCO WHOLESALE CORPORATION RESTRICTED STOCK UNIT AWARD AGREEMENT 1. Grant of Stock Units. You are hereby granted Employee Stock Units covering the number of shares of Costco Wholesale Corp. common stock (the “Shares”) specified in the Grant Detail made available electronically in connection with the grant (the “Detail”). By accepting this grant, the Employee acknowledges and agree

December 23, 2019 EX-4.1

Description of Common Stock

Exhibit 4.1 DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 The following description of the Company’s common stock is based upon the Company’s Articles of Incorporation, as amended (“Articles”), the Company’s Bylaws, as amended (“Bylaws”), and applicable provisions of law. We have summarized certain portions of our Articles and B

December 23, 2019 EX-10.2.3

2019 Stock Incentive Plan Restricted Stock Unit Award Agreement-Non-Executive Director

EX-10.2.3 5 costex1023112419.htm EXHIBIT 10.2.3 Exhibit 10.2.3 COSTCO WHOLESALE CORPORATION RESTRICTED STOCK UNIT AWARD AGREEMENT 1.Grant of Stock Units. You are hereby granted Non-Executive Director Stock Units covering the number of shares of Costco Wholesale Corp. common stock (the “Shares”) specified in the Grant Detail made available electronically in connection with the grant (the “Detail”).

December 23, 2019 EX-10.2.4

2019 Stock Incentive Plan Letter Agreement for 2020 Performance-Based Restricted Stock Units-Executive

Exhibit 10.2.4 November 21, 2019 Dear Executive: This letter specifies certain terms applicable to your fiscal year 2020 performance-based Restricted Stock Units (“FY 2020 RSUs”) in the event your employment is terminated due to your death, Disability, or for any other reason (other than for cause) prior to October 22, 2020 (an “Eligible Termination”). Capitalized terms not otherwise defined in th

December 12, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): December 12, 2019 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Com

December 12, 2019 EX-99.1

COSTCO WHOLESALE CORPORATION REPORTS FIRST QUARTER FISCAL YEAR 2020 OPERATING RESULTS

EX-99.1 Exhibit 99.1 Press Release COSTCO WHOLESALE CORPORATION REPORTS FIRST QUARTER FISCAL YEAR 2020 OPERATING RESULTS ISSAQUAH, Wash., December 12, 2019 - Costco Wholesale Corporation (“Costco” or the “Company”) (Nasdaq: COST) today announced its operating results for the first quarter (twelve weeks) of fiscal 2020, ended November 24, 2019. Net sales for the first quarter were $36.24 billion, a

December 10, 2019 DEF 14A

COST / Costco Wholesale Corp. DEF 14A - - OTHER DEFINITIVE PROXY STATEMENTS

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as Permitted by Rule 14a-6(e)(2)) ☒ Defin

December 10, 2019 DEFA14A

COST / Costco Wholesale Corp. DEFA14A - - ADDITIONAL DEFINITIVE PROXY SOLICITING

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as Permitted by Rule 14a-6(e)(2)) ☐ Defin

November 29, 2019 PRE 14A

COST / Costco Wholesale Corp. PRE 14A - - OTHER PRELIMINARY PROXY STATEMENTS

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a party other than the Registrant ☐ Check the appropriate box: ☒ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as Permitted by Rule 14a-6(e)(2)) ☐ Defin

November 27, 2019 8-K

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

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): November 25, 2019 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Com

October 21, 2019 EX-10.1

Fiscal 2020 Executive Bonus Plan

EX-10.1 Exhibit 10.1 Costco Wholesale Corporation Executive Bonus Plan For fiscal year 2020, executive officers are, depending upon the individual, eligible for a bonus award of up to approximately $200,000. The final bonus amounts are subject to the approval of the Compensation Committee. Eligibility for up to 50% of the bonus amount is determined by whether the Company has met its pre-tax income

October 21, 2019 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

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 17, 2019 COSTCO WHOLESALE CORPORATION (Exact name of registrant as specified in its charter) Washington 0-20355 91-1223280 (State or other jurisdiction of incorporation) (Comm

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