SEC Form 4 · Updated Daily
COST
— COSTCO WHOLESALE CORPORATION OwnershipInsider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.
Current Reporting Owners
| Owner | Role | Shares Owned | As Of | Last Activity |
|---|---|---|---|---|
| Callans Patrick J | Officer | 60,894.558 | 2025-10-22 | F |
| JAMES HAMILTON E | Director | 55,537.936 | 2025-10-22 | A |
| Vachris Roland Michael | Director · Officer | 52,258.062 | 2025-10-22 | F |
| Sullivan John Christopher | Officer | 47,671.152 | 2025-10-22 | F |
| Klauer James C | Officer | 44,836.994 | 2026-01-14 | S |
| STANTON JOHN W | Director | 24,089.936 | 2025-10-22 | A |
| MILLERCHIP GARY | Director | 15,465.301 | 2026-03-11 | F |
| Riel Pierre | Officer | 11,255.885 | 2025-09-10 | F |
| POLIT JAVIER | Officer | 10,189.592 | 2025-12-30 | S |
| DECKER SUSAN L | Director | 8,531.936 | 2026-01-16 | S |
| Rubanenko Yoram | Officer | 8,247.119 | 2025-09-10 | F |
| Miller Russell D | Officer | 8,240 | 2026-01-09 | S |
| Adamo Claudine | Officer | 6,121.195 | 2026-03-09 | S |
| RAIKES JEFFREY S | Director | 6,043.936 | 2026-07-10 | G |
| Frates Caton | Officer | 5,815.001 | 2026-04-01 | S |
| Barbre Tiffany Marie | Reporting Owner | 5,155.447 | 2025-10-24 | S |
| DENMAN KENNETH D | Director | 4,778.936 | 2026-06-23 | S |
| Jones Teresa A. | Officer | 3,927.804 | 2026-01-27 | G |
| JEWELL SARAH MR SALLY | Director | 3,612.936 | 2025-10-22 | A |
| Wilderotter Mary Agnes | Director | 3,204.936 | 2025-10-22 | A |
| Wilcox William Richard | Officer | 2,000 | 2025-11-07 | S |
| Foulkes Helena | Director | 1,086.802 | 2025-10-22 | A |
| Raimondo Gina Marie | Director | 215 | 2026-01-16 | A |
| George Sarah Catherine | Officer | 0 | 2026-03-12 | I |
Recent Filings
| Date | Owner | Activity | Shares | Price | Owned After |
|---|---|---|---|---|---|
| 2026-07-10 | RAIKES JEFFREY S | Gift | 5,249 | $0.00 | 6,043.936 |
| 2026-06-23 | DENMAN KENNETH D | Open-market sale | 885 | $957.45 | 4,778.936 |
| 2026-04-01 | Frates Caton | Open-market sale | 700 | $993.00 | 5,815.001 |
| 2026-03-12 | George Sarah Catherine | I | 642.125 | $991.21 | 0 |
| 2026-03-11 | MILLERCHIP GARY | Tax withholding | 1,154.017 | $992.23 | 15,465.301 |
| 2026-03-09 | Adamo Claudine | Open-market sale | 730 | $1003.02 | 6,121.195 |
| 2026-01-27 | Jones Teresa A. | Gift | 300 | $0.00 | 3,927.804 |
| 2026-01-27 | RAIKES JEFFREY S | Gift | 5,115 | $0.00 | 11,292.936 |
| 2026-01-21 | Jones Teresa A. | Open-market sale | 850 | $986.26 | 4,227.804 |
| 2026-01-16 | Raimondo Gina Marie | Grant / award | 215 | $0.00 | 215 |
| 2026-01-16 | DECKER SUSAN L | Open-market sale | 458 | $955.00 | 8,531.936 |
| 2026-01-14 | Klauer James C | Open-market sale | 1,500 | $939.00 | 44,836.994 |
| 2026-01-09 | Miller Russell D | Open-market sale | 1,500 | $916.32 | 8,240 |
| 2025-12-30 | POLIT JAVIER | Open-market sale | 558.305 | $862.89 | 10,189.592 |
| 2025-12-29 | POLIT JAVIER | Open-market sale | 2,049 | $867.21 | 10,747.897 |
| 2025-12-19 | DENMAN KENNETH D | Gift | 325 | $0.00 | 5,663.936 |
| 2025-12-15 | DECKER SUSAN L | Gift | 2,827 | $0.00 | 8,989.936 |
| 2025-11-10 | RAIKES JEFFREY S | Gift | 4,120 | $0.00 | 16,407.936 |
| 2025-11-07 | Wilcox William Richard | Open-market sale | 2,400 | $930.13 | 2,000 |
| 2025-10-24 | Adamo Claudine | Open-market sale | 2,700 | $935.68 | 6,851.197 |
| 2025-10-24 | Barbre Tiffany Marie | Open-market sale | 1,239.383 | $934.62 | 5,155.447 |
| 2025-10-22 | DECKER SUSAN L | Grant / award | 286 | $0.00 | 11,816.936 |
| 2025-10-22 | DENMAN KENNETH D | Grant / award | 286 | $0.00 | 5,988.936 |
| 2025-10-22 | Foulkes Helena | Grant / award | 286 | $0.00 | 1,086.802 |
| 2025-10-22 | JAMES HAMILTON E | Grant / award | 286 | $0.00 | 55,537.936 |
| 2025-10-22 | JEWELL SARAH MR SALLY | Grant / award | 286 | $0.00 | 3,612.936 |
| 2025-10-22 | RAIKES JEFFREY S | Grant / award | 286 | $0.00 | 20,527.936 |
| 2025-10-22 | Wilderotter Mary Agnes | Grant / award | 286 | $0.00 | 3,204.936 |
| 2025-10-22 | STANTON JOHN W | Grant / award | 286 | $0.00 | 24,089.936 |
| 2025-10-22 | Adamo Claudine | Tax withholding | 110.57 | $944.68 | 9,551.197 |
| 2025-10-22 | Adamo Claudine | Tax withholding | 176.66 | $944.68 | 9,661.767 |
| 2025-10-22 | Adamo Claudine | Tax withholding | 198.69 | $944.68 | 9,838.427 |
| 2025-10-22 | Adamo Claudine | Tax withholding | 96.94 | $944.68 | 10,037.117 |
| 2025-10-22 | Adamo Claudine | Tax withholding | 121.78 | $944.68 | 10,134.057 |
| 2025-10-22 | Callans Patrick J | Tax withholding | 110.57 | $944.68 | 60,894.558 |
| 2025-10-22 | Callans Patrick J | Tax withholding | 176.66 | $944.68 | 61,005.128 |
| 2025-10-22 | Callans Patrick J | Tax withholding | 198.69 | $944.68 | 61,181.788 |
| 2025-10-22 | Callans Patrick J | Tax withholding | 191.08 | $944.68 | 61,380.478 |
| 2025-10-22 | Callans Patrick J | Tax withholding | 239.95 | $944.68 | 61,571.558 |
| 2025-10-22 | Frates Caton | Tax withholding | 705.75 | $944.68 | 6,515.004 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.