COSTCO WHOLESALE CORP /NEW (COST) — Insider Trading
Insider trading activity for COSTCO WHOLESALE CORP /NEW sourced from SEC EDGAR Form 4 filings.
Overview
- Total insider trades: 8
- Last trade date: Oct 14, 2026
- Ticker: COST
Top Insiders
- Adamo Claudine (Executive Vice President) — 1 trades, buy: $0, sell: $2.0M
- Adamo Claudine (Officer) — 1 trades, buy: $0, sell: $2.0M
- Wilcox William Richard (Executive Vice President) — 1 trades, buy: $0, sell: $1.1M
- Wilcox William Richard (Officer) — 1 trades, buy: $0, sell: $0
- DENMAN KENNETH D — 1 trades, buy: $0, sell: $847K
Recent Trades
| Date | Insider | Ticker / Company | Type | Shares | Value |
|---|---|---|---|---|---|
| Oct 13, 2026 | Wilcox William Richard | COST COSTCO WHOLESALE CORP /NEW | SELL | 1,100 | $1.1M |
| Oct 13, 2026 | Wilcox William Richard | CCOST COSTCO WHOLESALE CORP /NEW | OTHER | 1,100 | $1.1M |
| Sep 29, 2026 | Adamo Claudine | COST COSTCO WHOLESALE CORP /NEW | SELL | 2,200 | $2.0M |
| Sep 29, 2026 | Frates Caton | COST COSTCO WHOLESALE CORP /NEW | SELL | 800.638 | $733K |
| Sep 29, 2026 | Frates Caton | CCOST COSTCO WHOLESALE CORP /NEW | SELL | 801 | $733K |
| Sep 29, 2026 | Adamo Claudine | CCOST COSTCO WHOLESALE CORP /NEW | SELL | 2,200 | $2.0M |
| Jun 23, 2026 | DENMAN KENNETH D | COST COSTCO WHOLESALE CORP /NEW | SELL | 885 | $847K |
| Apr 1, 2026 | Frates Caton | COST COSTCO WHOLESALE CORP /NEW | SELL | 700 | $695K |