X0306 4 2019-06-24 0 0000909832 COSTCO WHOLESALE CORP /NEW COST 0001679566 Vachris Roland Michael 999 LAKE DRIVE ISSAQUAH WA 98027 0 1 0 0 Executive VP Common Stock 2019-06-24 4 S 0 3700 267.2494 D 13578 D Deanna K. Nakashima, attorney-in-fact 2019-06-24