$COST · Costco Wholesale Corporation

On October 22, 2026, John W. Stanton, a director of Costco Wholesale Corporation, filed a Form 4 with the SEC reporting a change in beneficial ownership. The filing states that he acquired 266 shares of Costco common stock at a price of $0. This was a grant of restricted stock units, not an open-market purchase. The units vest in three equal installments beginning October 22, 2027, and continuing on October 22 in each of the following two years.

Following the transaction, Stanton directly owned 24,355.936 shares of Costco common stock. The filing also lists 211 shares held indirectly by his son and 211 shares held indirectly through the Stanton Family Trust. No other transactions were reported in the filing.