10 unchanged sentences
8-K 9/20/2024
−Removed: 10.1* Fiscal 2026 Executive Bonus Plan
−Removed: 8-K 10/20/2025
10.1* Executive Employment Agreement effective January 1, 2026, between Ron Vachris and Costco Wholesale Corporation
−Removed: 10.3* 2019 Stock Incentive Plan Restricted Stock Unit Award Agreement - U.S.
−Removed: Employee (for awards granted beginning in October 2025)
−Removed: 10.4* 2019 Stock Incentive Plan Restricted Stock Unit Award Agreement - Non-U.S.
−Removed: Employee (for awards granted beginning in October 2025)
+Added: 10-Q 11/23/2025 12/17/2025
31.1 Rule 13(a) – 14(a) Certifications
12 unchanged sentences
C OSTCO W HOLESALE C ORPORATION
−Removed: December 17, 2025 By /s/ R ON M.
+Added: March 11, 2026 By /s/ R ON M.
President and Chief Executive Officer
−Removed: December 17, 2025 By /s/ G ARY M ILLERCHIP
+Added: March 11, 2026 By /s/ G ARY M ILLERCHIP
Date Gary Millerchip
1 unchanged sentence
Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.