Costco Director Kenneth D. Denman Sells 885 Shares at $957.45 Average Price

Kenneth D. Denman, a director of Costco Wholesale Corp, sold 885 shares of common stock on June 23, 2026, at a weighted average price of $957.4525 per share. The sale prices ranged from $957.44 to $957.63 per share. Following this transaction, Denman's remaining ownership in Costco stands at 4,778.936 shares. The filing was submitted on June 25, 2026, and signed by Alejandro Torres as Attorney-in-Fact. This Form 4 filing represents a routine disclosure of insider trading activity by a company director, providing transparency about stock transactions by corporate insiders as required by SEC regulations.