Costco (COST) EVP Claudine Adamo Sells 2,200 Shares

What Happened
Claudine Adamo, Executive Vice President at Costco Wholesale Corp (COST), sold 2,200 shares in an open-market transaction on September 29, 2026. The shares were sold at $915.93 each for total proceeds of $2,015,046. This was a sale (liquidity event) rather than a purchase.

Key Details

• Transaction date and price: 2026-09-29 — 2,200 shares sold at $915.93 per share.
• Total value: $2,015,046.
• Shares owned after transaction: Not specified in the information provided.
• Filing timeliness: Report filed 2026-09-30 (appears to be filed promptly).
• Notes/footnotes: The supplied filing details do not indicate a 10b5-1 plan, tax withholding, or other special footnotes.

Context
This was an open-market sale by a company executive. Sales by insiders can reflect routine portfolio management or other personal reasons and do not by themselves indicate a change in company outlook. Retail investors often weigh insider purchases more heavily than routine sales when assessing insider sentiment.