24 insiders reported 116 Form 4 transactions for COSTCO WHOLESALE CORP /NEW (COST) over the past 18 months (most recent 2026-09-14). Recent activity: Jones Teresa A. (Executive Vice President) Sell 1,459 shares, Wilcox William Richard (Executive Vice President) Sell 1,935 shares, Adamo Claudine (Executive Vice President) Buy 4,129 shares, Riel Pierre (Executive Vice President) Buy 4,552 shares, Frates Caton (Executive Vice President) Buy 4,552 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-14 | Jones Teresa A. | Executive Vice President | Sell | 1,459 | $1.3M |
| 2026-09-14 | Wilcox William Richard | Executive Vice President | Sell | 1,935 | $1.7M |
| 2026-09-14 | Adamo Claudine | Executive Vice President | Buy | 4,129 | $0 |
| 2026-09-14 | Riel Pierre | Executive Vice President | Buy | 4,552 | $0 |
| 2026-09-14 | Frates Caton | Executive Vice President | Buy | 4,552 | $0 |
| 2026-09-14 | Jones Teresa A. | Executive Vice President | Buy | 4,129 | $0 |
| 2026-09-14 | Wilcox William Richard | Executive Vice President | Buy | 4,129 | $0 |
| 2026-09-14 | Rubanenko Yoram | Executive Vice President | Buy | 4,129 | $0 |
| 2026-09-14 | Rubanenko Yoram | Executive Vice President | Sell | 1,696 | $1.5M |
| 2026-09-14 | Adamo Claudine | Executive Vice President | Sell | 917 | $827,198 |
| 2026-09-14 | Riel Pierre | Executive Vice President | Sell | 1,562 | $1.4M |
| 2026-09-14 | Frates Caton | Executive Vice President | Sell | 1,654 | $1.5M |
| 2026-09-14 | Klauer James C | Executive Vice President | Buy | 4,129 | $0 |
| 2026-09-14 | Klauer James C | Executive Vice President | Sell | 936 | $844,731 |
| 2026-07-14 | RAIKES JEFFREY S | Director | Sell | 5,249 | $0 |
| 2026-06-25 | DENMAN KENNETH D | Director | Sell | 885 | $847,343 |
| 2026-04-01 | Frates Caton | Executive Vice President | Sell | 700 | $695,100 |
| 2026-03-13 | MILLERCHIP GARY | Executive Vice President | Sell | 1,154 | $1.1M |
| 2026-03-13 | George Sarah Catherine | Executive Vice President | Sell | 642 | $636,486 |
| 2026-03-11 | Adamo Claudine | Executive Vice President | Sell | 730 | $732,205 |
| 2026-01-28 | Jones Teresa A. | Executive Vice President | Sell | 300 | $0 |
| 2026-01-28 | RAIKES JEFFREY S | Director | Sell | 5,115 | $0 |
| 2026-01-23 | Jones Teresa A. | Executive Vice President | Sell | 850 | $838,321 |
| 2026-01-20 | Raimondo Gina Marie | Director | Buy | 215 | $0 |
| 2026-01-20 | DECKER SUSAN L | Director | Sell | 458 | $437,390 |
来源：SEC Form 4 申报文件 · 截至 2026-09-14