Real time insider trading transaction history:
- Insiders are prohibited from making short-swing profits by trading their shares within 6 months of the registration or acquiring the shares.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
Common stock purchase or sale:
| Transaction Date | Reported DateTime | Company | Symbol | Insider Relationship | Shares Traded | Average Price | Total Amount | Shares Owned | Filing |
| 2026-09-29 Sale | 2026-09-30 5:52 pm | COSTCO WHOLESALE CORP | COST | Frates Caton Sr. Executive Vice President | 801 | $915.93 | $733,328 | 7,912 (Direct) | View |
| 2026-09-29 Sale | 2026-09-30 5:48 pm | COSTCO WHOLESALE CORP | COST | Adamo Claudine Executive Vice President | 2,200 | $915.93 | $2,015,046 | 7,134 (Direct) | View |
| 2026-06-23 Sale | 2026-06-25 4:12 pm | COSTCO WHOLESALE CORP | COST | DENMAN KENNETH D Director | 885 | $957.45 | $847,345 | 4,779 (Direct) | View |
| 2026-04-01 Sale | 2026-04-01 6:13 pm | COSTCO WHOLESALE CORP | COST | Frates Caton Executive Vice President | 700 | $993 | $695,100 | 5,815 (Direct) | View |
| 2026-03-09 Sale | 2026-03-11 4:08 pm | COSTCO WHOLESALE CORP | COST | Adamo Claudine Executive Vice President | 730 | $1,003 | $732,205 | 6,121 (Direct) | View |
| 2026-01-21 Sale | 2026-01-23 4:53 pm | COSTCO WHOLESALE CORP | COST | Jones Teresa A. Executive Vice President | 850 | $986.26 | $838,318 | 4,228 (Direct) | View |
| 2026-01-16 Sale | 2026-01-20 4:15 pm | COSTCO WHOLESALE CORP | COST | DECKER SUSAN L Director | 458 | $955 | $437,390 | 8,532 (Direct) | View |
| 2026-01-14 Sale | 2026-01-15 4:27 pm | COSTCO WHOLESALE CORP | COST | Klauer James C Executive Vice President | 1,500 | $939 | $1,408,500 | 44,935 (Indirect Direct) | View |
| 2026-01-09 Sale | 2026-01-12 4:36 pm | COSTCO WHOLESALE CORP | COST | Miller Russell D Sr. Executive Vice President | 1,500 | $916.32 | $1,374,480 | 8,241 (Indirect Direct) | View |
| 2025-12-29 Sale | 2025-12-31 4:59 pm | COSTCO WHOLESALE CORP | COST | POLIT JAVIER Executive Vice President | 2,607 | $866.28 | $2,258,662 | 10,190 (Direct) | View |
| 2025-11-07 Sale | 2025-11-12 5:45 pm | COSTCO WHOLESALE CORP | COST | Wilcox William Richard Executive Vice President | 2,400 | $930.13 | $2,232,312 | 2,000 (Direct) | View |
| 2025-10-24 Sale | 2025-10-24 7:50 pm | COSTCO WHOLESALE CORP | COST | Barbre Tiffany Marie Principal Accounting Officer | 1,239 | $934.62 | $1,158,353 | 5,158 (Indirect Direct) | View |
Stock options: Exercise, Award, Grant, Conversion
| Transaction Date | Reported DateTime | Exercisable Expiration | Company | Symnbol | Insider Relationship | Shares Traded | Conversion Price | Shares Owned | Filing |
Ownership(A) | 2026-09-30 5:46 pm | N/A N/A | COSTCO WHOLESALE CORP | COST | Self Adam Webb Executive Vice President | 0 | $0 | 3,529 (Direct) | View |
| 2026-09-10 Option Award | 2026-09-14 5:30 pm | N/A N/A | COSTCO WHOLESALE CORP | COST | Wilcox William Richard Executive Vice President | 4,129 | $0 | 4,194 (Direct) | View |
| 2026-09-10 Tax Withholding | 2026-09-14 5:30 pm | N/A N/A | COSTCO WHOLESALE CORP | COST | Wilcox William Richard Executive Vice President | 1,935 | $902.38 | 4,194 (Direct) | View |
| 2026-09-10 Option Award | 2026-09-14 5:28 pm | N/A N/A | COSTCO WHOLESALE CORP | COST | Rubanenko Yoram Executive Vice President | 4,129 | $0 | 10,680 (Direct) | View |
| 2026-09-10 Tax Withholding | 2026-09-14 5:28 pm | N/A N/A | COSTCO WHOLESALE CORP | COST | Rubanenko Yoram Executive Vice President | 1,696 | $902.38 | 10,680 (Direct) | View |
| 2026-09-10 Option Award | 2026-09-14 5:25 pm | N/A N/A | COSTCO WHOLESALE CORP | COST | Riel Pierre Executive Vice President | 4,552 | $0 | 14,246 (Direct) | View |
| 2026-09-10 Tax Withholding | 2026-09-14 5:25 pm | N/A N/A | COSTCO WHOLESALE CORP | COST | Riel Pierre Executive Vice President | 1,562 | $902.38 | 14,246 (Direct) | View |
| 2026-09-10 Option Award | 2026-09-14 5:23 pm | N/A N/A | COSTCO WHOLESALE CORP | COST | Klauer James C Executive Vice President | 4,129 | $0 | 48,128 (Direct) | View |
| 2026-09-10 Tax Withholding | 2026-09-14 5:23 pm | N/A N/A | COSTCO WHOLESALE CORP | COST | Klauer James C Executive Vice President | 936 | $902.38 | 48,128 (Direct) | View |
| 2026-09-10 Option Award | 2026-09-14 5:22 pm | N/A N/A | COSTCO WHOLESALE CORP | COST | Jones Teresa A. Executive Vice President | 4,129 | $0 | 6,598 (Direct) | View |
| 2026-09-10 Tax Withholding | 2026-09-14 5:22 pm | N/A N/A | COSTCO WHOLESALE CORP | COST | Jones Teresa A. Executive Vice President | 1,459 | $902.38 | 6,598 (Direct) | View |
| 2026-09-10 Option Award | 2026-09-14 5:20 pm | N/A N/A | COSTCO WHOLESALE CORP | COST | Frates Caton Executive Vice President | 4,552 | $0 | 8,713 (Direct) | View |
| 2026-09-10 Tax Withholding | 2026-09-14 5:20 pm | N/A N/A | COSTCO WHOLESALE CORP | COST | Frates Caton Executive Vice President | 1,654 | $902.38 | 8,713 (Direct) | View |
| 2026-09-10 Option Award | 2026-09-14 5:17 pm | N/A N/A | COSTCO WHOLESALE CORP | COST | Adamo Claudine Executive Vice President | 4,129 | $0 | 9,334 (Direct) | View |
| 2026-09-10 Tax Withholding | 2026-09-14 5:17 pm | N/A N/A | COSTCO WHOLESALE CORP | COST | Adamo Claudine Executive Vice President | 917 | $902.38 | 9,334 (Direct) | View |
Ownership | 2026-09-10 5:48 pm | N/A N/A | COSTCO WHOLESALE CORP | COST | Self Adam Webb Executive Vice President | 0 | $0 | 3,527 (Direct) | View |
| 2026-07-10 Gift | 2026-07-14 4:14 pm | N/A N/A | COSTCO WHOLESALE CORP | COST | RAIKES JEFFREY S Director | 5,249 | $0 | 6,044 (Direct) | View |
Ownership(A) | 2026-05-15 6:31 pm | N/A N/A | COSTCO WHOLESALE CORP | COST | George Sarah Catherine Executive Vice President | 0 | $0 | 4,128 (Direct) | View |
| 2026-03-12 I | 2026-03-13 4:12 pm | N/A N/A | COSTCO WHOLESALE CORP | COST | George Sarah Catherine Executive Vice President | 642 | $991.21 | 1,401 (Indirect) | View |
| 2026-03-11 Tax Withholding | 2026-03-13 4:10 pm | N/A N/A | COSTCO WHOLESALE CORP | COST | MILLERCHIP GARY Executive Vice President | 1,154 | $992.23 | 15,465 (Direct) | View |
Ownership | 2026-03-11 5:06 pm | N/A N/A | COSTCO WHOLESALE CORP | COST | George Sarah Catherine Executive Vice President | 0 | $0 | 2,043 (Direct) | View |
| 2026-01-27 Gift | 2026-01-28 6:46 pm | N/A N/A | COSTCO WHOLESALE CORP | COST | RAIKES JEFFREY S Director | 5,115 | $0 | 11,293 (Direct) | View |
| 2026-01-27 Gift | 2026-01-28 6:43 pm | N/A N/A | COSTCO WHOLESALE CORP | COST | Jones Teresa A. Executive Vice President | 300 | $0 | 3,928 (Direct) | View |
| 2026-01-16 Option Award | 2026-01-20 4:12 pm | N/A N/A | COSTCO WHOLESALE CORP | COST | Raimondo Gina Marie Director | 215 | $0 | 215 (Direct) | View |
Ownership | 2026-01-20 4:07 pm | N/A N/A | COSTCO WHOLESALE CORP | COST | Raimondo Gina Marie Director | 0 | $0 | 0 (Direct) | View |
| 2025-12-19 Gift | 2025-12-22 4:36 pm | N/A N/A | COSTCO WHOLESALE CORP | COST | DENMAN KENNETH D Director | 325 | $0 | 5,664 (Direct) | View |
| 2025-12-15 Gift | 2025-12-17 4:30 pm | N/A N/A | COSTCO WHOLESALE CORP | COST | DECKER SUSAN L Director | 2,827 | $0 | 8,990 (Direct) | View |
| 2025-11-10 Gift | 2025-11-12 5:47 pm | N/A N/A | COSTCO WHOLESALE CORP | COST | RAIKES JEFFREY S Director | 4,120 | $0 | 16,408 (Direct) | View |
| 2025-10-22 Tax Withholding | 2025-10-24 7:50 pm | N/A N/A | COSTCO WHOLESALE CORP | COST | Barbre Tiffany Marie Principal Accounting Officer | 542 | $944.68 | 5,158 (Direct) | View |
| 2025-10-22 Option Award | 2025-10-24 7:50 pm | N/A N/A | COSTCO WHOLESALE CORP | COST | Barbre Tiffany Marie Principal Accounting Officer | 2,118 | $0 | 5,158 (Direct) | View |
| 2025-10-22 Tax Withholding | 2025-10-24 7:32 pm | N/A N/A | COSTCO WHOLESALE CORP | COST | Vachris Roland Michael President and CEO | 2,653 | $944.68 | 52,258 (Direct) | View |
| 2025-10-22 Option Award | 2025-10-24 7:32 pm | N/A N/A | COSTCO WHOLESALE CORP | COST | Vachris Roland Michael President and CEO | 13,834 | $0 | 52,258 (Direct) | View |
| 2025-10-22 Tax Withholding | 2025-10-24 7:30 pm | N/A N/A | COSTCO WHOLESALE CORP | COST | Sullivan John Christopher Executive VP | 2,514 | $944.68 | 47,671 (Direct) | View |
| 2025-10-22 Option Award | 2025-10-24 7:30 pm | N/A N/A | COSTCO WHOLESALE CORP | COST | Sullivan John Christopher Executive VP | 4,654 | $0 | 47,671 (Direct) | View |
| 2025-10-22 Tax Withholding | 2025-10-24 7:27 pm | N/A N/A | COSTCO WHOLESALE CORP | COST | POLIT JAVIER Executive Vice President | 1,168 | $944.68 | 12,797 (Direct) | View |
| 2025-10-22 Option Award | 2025-10-24 7:27 pm | N/A N/A | COSTCO WHOLESALE CORP | COST | POLIT JAVIER Executive Vice President | 4,219 | $0 | 12,797 (Direct) | View |
| 2025-10-22 Tax Withholding | 2025-10-24 7:23 pm | N/A N/A | COSTCO WHOLESALE CORP | COST | MILLERCHIP GARY Executive Vice President | 813 | $944.68 | 16,619 (Direct) | View |
| 2025-10-22 Option Award | 2025-10-24 7:23 pm | N/A N/A | COSTCO WHOLESALE CORP | COST | MILLERCHIP GARY Executive Vice President | 6,268 | $0 | 16,619 (Direct) | View |
| 2025-10-22 Tax Withholding | 2025-10-24 7:20 pm | N/A N/A | COSTCO WHOLESALE CORP | COST | Klauer James C Executive Vice President | 917 | $944.68 | 46,435 (Direct) | View |
| 2025-10-22 Tax Withholding | 2025-10-24 7:17 pm | N/A N/A | COSTCO WHOLESALE CORP | COST | Frates Caton Executive Vice President | 2,769 | $944.68 | 6,515 (Direct) | View |
| 2025-10-22 Tax Withholding | 2025-10-24 7:14 pm | N/A N/A | COSTCO WHOLESALE CORP | COST | Callans Patrick J Executive Vice President | 917 | $944.68 | 60,895 (Direct) | View |