COSTCO WHOLESALE CORP /NEW (COST) has 9 SEC Form 4 insider filings on record in the last 90 days. No insider purchases were filed — 1 sales totalling $847K. Most recent filing: Sept. 14, 2026.
| Date | Insider | Value | Shares | Stake | Pre-planned | Links |
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| Sept. 14, 2026 filed Sept. 10, 2026 | Wilcox William Richard Executive Vice President | — | +2,194 | +110% | No | |
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| Sept. 14, 2026 filed Sept. 10, 2026 | Rubanenko Yoram Executive Vice President | — | +2,433 | +30% | No | |
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| Sept. 14, 2026 filed Sept. 10, 2026 | Riel Pierre Executive Vice President | — | +2,990 | +27% | No | |
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| Sept. 14, 2026 filed Sept. 10, 2026 | Klauer James C Executive Vice President | — | +3,193 | +7% | No | |
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| Sept. 14, 2026 filed Sept. 10, 2026 | Jones Teresa A. Executive Vice President | — | +2,670 | +68% | No | |
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Showing the 5 most recent of 9 filings in the last 90 days.
Form 4 is the filing company officers, directors and 10% shareholders must submit to the SEC within two business days of trading their own company's stock. Open-market purchases generally carry more signal than sales, which are often scheduled in advance. More on how this works.
Real-time Telegram alerts the moment a Form 4 is filed. Filings shown here are delayed by 72 hours.
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