Costco Wholesale Officer Files Form 144 to Sell $1.05M in Common Stock

Executive Summary

On October 13, 2026, William Richard Wilcox, an Officer of Costco Wholesale Corp ($COST), filed Form 144 with the SEC indicating an intention to sell 1,100 shares of common stock. The aggregate market value of the proposed transaction is $1,054,025.28, implying an execution price of approximately $958.20 per share.

Transaction & Security Details

• Issuer: Costco Wholesale Corp /New (CIK: 0000909832)
• Insider: Wilcox William Richard (CIK: 0002087546)
• Role: Officer
• Security: Common Stock
• Volume: 1,100 shares
• Aggregate Market Value: $1,054,025.28
• Approximate Sale Date: October 13, 2026
• Broker: Fidelity Brokerage Services LLC

Origin of Securities

The shares proposed for sale were acquired on September 10, 2026, through restricted stock unit (RSU) vesting as part of executive equity compensation.

Market Context & Significance

This planned disposition represents a routine liquidity or tax-related sale following the recent vesting of equity compensation. Given that the 1,100 shares represent an infinitesimal fraction (less than 0.001%) of Costco's 443,129,349 shares outstanding, this filing carries low signaling significance and is not indicative of broader executive sentiment regarding the company's financial condition.