Costco Wholesale Corp /New (COST) — Insider Trading Activity

Costco Wholesale Corp /New (COST) has 120 insider transactions on record, including 0 open-market purchases and 26 sales by company executives and directors. The most recent transaction was filed on 2026-10-13 by Wilcox William Richard. The largest single transaction was a sale of $ 3.92M by Klauer James C.