Insider trading
Officers, directors, and 10% owners buying and selling their own company's stock, from SEC Form 4 filings. Newest first.
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| Type | Symbol | Insider | Shares | Price | Value | Traded | Filed |
|---|---|---|---|---|---|---|---|
| Grant | COST | Vachris Roland Michael President and CEO, Director | 13,973 | — | Oct 22, 2026 | Oct 27, 2026 | |
| Tax | COST | Vachris Roland Michael President and CEO, Director | 3,656 | $3.7M | Oct 22, 2026 | Oct 27, 2026 | |
| Grant | COST | Wilderotter Mary Agnes Director | 266 | — | Oct 22, 2026 | Oct 27, 2026 | |
| Grant | COST | Stanton John W Director | 266 | — | Oct 22, 2026 | Oct 27, 2026 | |
| Grant | COST | Raimondo Gina Marie Director | 266 | — | Oct 22, 2026 | Oct 27, 2026 | |
| Grant | COST | Raikes Jeffrey S Director | 266 | — | Oct 22, 2026 | Oct 27, 2026 | |
| Grant | COST | Jewell Sarah Mr Sally Director | 266 | — | Oct 22, 2026 | Oct 26, 2026 | |
| Grant | COST | James Hamilton E Director | 266 | — | Oct 22, 2026 | Oct 26, 2026 | |
| Grant | COST | Foulkes Helena Director | 266 | — | Oct 22, 2026 | Oct 26, 2026 | |
| Grant | COST | Denman Kenneth D Director | 266 | — | Oct 22, 2026 | Oct 26, 2026 | |
| Grant | COST | Decker Susan L Director | 266 | — | Oct 22, 2026 | Oct 26, 2026 |