COST insider trading
Costco Wholesale Corporation · end-of-day data as of Oct 16, 2026
Costco Wholesale Corporation
$989.11+5.8%
Buy · 40 analystsPT $1,089.88 +10.2%
In the last 12 months COST insiders made 0 open-market purchases and 15 sales worth $18.31M, as reported on SEC Form 4. The latest: Wilcox William Richard (officer: Executive Vice President) sold 1,100 shares at $958.21 on Oct 13, 2026.
Last 90 days
- Insiders-$3.8M
Transactions
Open-market buys $0 · sells $18.31M over the last 365 days (0 buys, 15 sells).
| Oct 13, 2026 | Wilcox William Richard | Sell | 1,100 | $958.21 | $1.05M |
| Sep 29, 2026 | Adamo Claudine | Sell | 2,200 | $915.93 | $2.02M |
| Sep 29, 2026 | Frates Caton | Sell | 801 | $915.93 | $733K |
| Sep 10, 2026 | Adamo Claudine | Other | 5,046 | $902.38 | $827K |
| Sep 10, 2026 | Frates Caton | Other | 6,206 | $902.38 | $1.49M |
| Sep 10, 2026 | Jones Teresa A. | Other | 5,588 | $902.38 | $1.32M |
| Sep 10, 2026 | Klauer James C | Other | 5,065 | $902.38 | $845K |
| Sep 10, 2026 | Riel Pierre | Other | 6,114 | $902.38 | $1.41M |
| Sep 10, 2026 | Rubanenko Yoram | Other | 5,825 | $902.38 | $1.53M |
| Sep 10, 2026 | Wilcox William Richard | Other | 6,064 | $902.38 | $1.75M |
| Aug 31, 2026 | Self Adam Webb | Other | 0 | — | — |
| Jul 10, 2026 | RAIKES JEFFREY S | Other | 5,249 | — | — |
| Jun 23, 2026 | DENMAN KENNETH D | Sell | 885 | $957.45 | $847K |
| Apr 1, 2026 | Frates Caton | Sell | 700 | $993.00 | $695K |
| Mar 12, 2026 | George Sarah Catherine | Other | 642 | $991.21 | $636K |
| Mar 11, 2026 | MILLERCHIP GARY | Other | 1,154 | $992.23 | $1.15M |
| Mar 9, 2026 | Adamo Claudine | Sell | 730 | $1,003.02 | $732K |
| Mar 2, 2026 | George Sarah Catherine | Other | 0 | — | — |
| Jan 27, 2026 | Jones Teresa A. | Other | 300 | — | — |
| Jan 27, 2026 | RAIKES JEFFREY S | Other | 5,115 | — | — |
Source: SEC Form 4 filings. "Other" covers awards, option exercises and gifts.