Claudine Adamo's Restricted Stock Vesting and Sale

The filing details the vesting and sale of restricted stock by Claudine Adamo, an officer of Costco Wholesale Corp. The securities involved are common stock, with a total of 2,700 units sold. The transactions occurred on multiple dates: September 16, 2024 (1 unit), October 22, 2024 (1,145 units), September 10, 2025 (468 units), and October 22, 2025 (1,086 units). The aggregate market value of the sold securities is $2,526,336.27. The sale was executed through Fidelity Brokerage Services LLC, and the notice date for the sale is October 24, 2025. There were no securities sold in the past three months.