X0206 3 2026-03-02 0 0000909832 COSTCO WHOLESALE CORP /NEW COST 0002112687 George Sarah Catherine 999 LAKE DRIVE ISSAQUAH WA 98027 1 Executive Vice President Common Stock 1401.258 D Common Stock 642.1252 I By 401(k) Exhibit 24: Power of Attorney provided herewith. /s/ Alejandro Torres, Attorney-in-Fact 2026-03-11