Costco (COST) — insider trading
Consumer Staples
Costco (COST) has 10 reported SEC Form 4 insider transactions in our data, including 5 open-market sales among the most recent 10 (latest 2026-07-10).
Recent Form 4 transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026-07-10 | RAIKES JEFFREY S | Director | Bona fide gift | 5,249 | $0.00 | $0 | Form 4 |
| 2026-06-23 | DENMAN KENNETH D | Director | Open-market sale | 885 | $957.45 | $847.3K | Form 4 |
| 2026-04-01 | Frates Caton | Officer (Executive Vice President) | Open-market sale | 700 | $993.00 | $695.1K | Form 4 |
| 2026-03-12 | George Sarah Catherine | Officer (Executive Vice President) | Discretionary transaction | 642 | $991.21 | $636.5K | Form 4 |
| 2026-03-11 | MILLERCHIP GARY | Officer (Executive Vice President) | Shares withheld for taxes / exercise cost | 1,154 | $992.23 | $1.15M | Form 4 |
| 2026-03-09 | Adamo Claudine | Officer (Executive Vice President) | Open-market sale | 730 | $1,003.02 | $732.2K | Form 4 |
| 2026-01-27 | Jones Teresa A. | Officer (Executive Vice President) | Bona fide gift | 300 | $0.00 | $0 | Form 4 |
| 2026-01-27 | RAIKES JEFFREY S | Director | Bona fide gift | 5,115 | $0.00 | $0 | Form 4 |
| 2026-01-21 | Jones Teresa A. | Officer (Executive Vice President) | Open-market sale | 850 | $986.26 | $838.3K | Form 4 |
| 2026-01-16 | DECKER SUSAN L | Director | Open-market sale | 458 | $955.00 | $437.4K | Form 4 |
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Transaction types are the SEC Form 4 codes: open-market purchases (P) and sales (S) are the only rows that reflect open-market conviction. Awards/vesting (A), option exercises (M/X/C), shares withheld for taxes (F) and gifts (G) are compensation or mechanical, not buying or selling on the open market. Sales may be planned and non-discretionary (e.g. a Rule 10b5-1 plan); open-market buying is not a recommendation to buy. Informational only — not financial advice.
Source: SEC EDGAR Form 3/4/5. See the full company profile: Costco (COST).
Last updated 2026-07-10 (most recent filing date).
Informational only — NOT financial advice. Insider filings are sourced from SEC EDGAR and shown with their reported dates.