COST (Costco Wholesale Corp)
Insider Trading Activity
Every open-market purchase and sale reported by COST officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-07-14 | JEFFREY S RAIKES | Director | G | — | — |
| 2026-06-25 | KENNETH D DENMAN | Director | Sell | — | — |
| 2026-04-01 | Caton Frates | Executive Vice President | Sell | — | — |
| 2026-03-13 | GARY MILLERCHIP | Executive Vice President | F | — | — |
| 2026-03-13 | Sarah Catherine George | Executive Vice President | I | — | — |
| 2026-03-11 | Claudine Adamo | Executive Vice President | Sell | — | — |
| 2026-01-28 | Teresa A. Jones | Executive Vice President | G | — | — |
| 2026-01-28 | JEFFREY S RAIKES | Director | G | — | — |
| 2026-01-23 | Teresa A. Jones | Executive Vice President | Sell | — | — |
| 2026-01-20 | Gina Marie Raimondo | Director | A | — | — |
| 2026-01-20 | SUSAN L DECKER | Director | Sell | — | — |
| 2026-01-15 | James C Klauer | Executive Vice President | Sell | — | — |
| 2026-01-12 | Russell D Miller | Sr. Executive Vice President | Sell | — | — |
| 2025-12-31 | JAVIER POLIT | Executive Vice President | Sell | — | — |
| 2025-12-22 | KENNETH D DENMAN | Director | G | — | — |
| 2025-12-17 | SUSAN L DECKER | Director | G | — | — |
| 2025-11-12 | William Richard Wilcox | Executive Vice President | Sell | — | — |
| 2025-11-12 | JEFFREY S RAIKES | Director | G | — | — |
| 2025-10-24 | SUSAN L DECKER | Director | A | — | — |
| 2025-10-24 | KENNETH D DENMAN | Director | A | — | — |
| 2025-10-24 | Helena Foulkes | Director | A | — | — |
| 2025-10-24 | HAMILTON E JAMES | Director | A | — | — |
| 2025-10-24 | SARAH MR SALLY JEWELL | Director | A | — | — |
| 2025-10-24 | JEFFREY S RAIKES | Director | A | — | — |
| 2025-10-24 | Mary Agnes Wilderotter | Director | A | — | — |
| 2025-10-24 | JOHN W STANTON | Director | A | — | — |
| 2025-10-24 | Claudine Adamo | Executive Vice President | MIXED | — | — |
| 2025-10-24 | Patrick J Callans | Executive Vice President | F | — | — |
| 2025-10-24 | Caton Frates | Executive Vice President | F | — | — |
| 2025-10-24 | James C Klauer | Executive Vice President | F | — | — |
| 2025-10-24 | GARY MILLERCHIP | Executive Vice President | MIXED | — | — |
| 2025-10-24 | JAVIER POLIT | Executive Vice President | MIXED | — | — |
| 2025-10-24 | John Christopher Sullivan | Executive VP | MIXED | — | — |
| 2025-10-24 | Roland Michael Vachris | President and CEO | MIXED | — | — |
| 2025-10-24 | Tiffany Marie Barbre | — | MIXED | — | — |
| 2025-10-01 | Russell D Miller | Sr. Executive Vice President | Sell | — | — |
| 2025-09-30 | Caton Frates | Executive Vice President | Sell | — | — |
| 2025-09-24 | Russell D Miller | Sr. Executive Vice President | G | — | — |
| 2025-09-12 | Claudine Adamo | Executive Vice President | MIXED | — | — |
| 2025-09-12 | Patrick J Callans | Executive Vice President | MIXED | — | — |
| 2025-09-12 | Caton Frates | Executive Vice President | MIXED | — | — |
| 2025-09-12 | Teresa A. Jones | Executive Vice President | MIXED | — | — |
| 2025-09-12 | James C Klauer | Executive Vice President | MIXED | — | — |
| 2025-09-12 | Russell D Miller | Sr. Executive Vice President | MIXED | — | — |
| 2025-09-12 | Pierre Riel | Executive Vice President | MIXED | — | — |
| 2025-09-12 | Yoram Rubanenko | Executive Vice President | MIXED | — | — |
| 2025-09-04 | JOHN W STANTON | Director | G | — | — |
| 2025-08-22 | Teresa A. Jones | Executive Vice President | Sell | — | — |
| 2025-07-15 | Yoram Rubanenko | Executive Vice President | Sell | — | — |
| 2025-07-15 | JEFFREY S RAIKES | Director | G | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | Director | 725,024 | — |
| — | Former Chairman of the Board | 448,389 | — |
| — | Executive VP | 249,743 | — |
| — | Director | 214,365 | — |
| — | Director | 187,669 | — |
| — | Director | 128,305 | — |
| — | Executive Vice President | 60,894 | — |
| — | Chairman of the Board | 55,767 | — |
| — | Executive Vice President | 55,761 | — |
| — | President and CEO | 54,910 | — |
| — | Former Executive VP | 53,653 | — |
| — | Executive VP | 47,671 | — |
| — | Executive VP | 46,837 | — |
| — | Director | 45,000 | — |
| — | Executive Vice President | 44,935 | — |
| — | Director | 41,878 | — |
| — | Executive VP | 41,109 | — |
| — | Director | 34,424 | — |
| — | Executive Vice President | 34,400 | — |
| — | Executive VP | 33,025 | — |
| — | Executive VP | 32,583 | — |
| — | Former Executive VP | 31,945 | — |
| — | Director | 25,734 | — |
| — | Director | 24,300 | — |
| — | — | 20,926 | — |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the COST quote page; the site-wide leaderboard is on the insider transactions hub.