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Insider trades
Open-market buys and sells by officers, directors and 10% owners, from SEC Form 4. Usually filed within two business days.
About this data
- What it is
- When a company's officers, directors or owners of more than 10% buy or sell its stock, they must report the trade to the SEC on Form 4. This feed shows purchases and sales on the open market; stock grants, option exercises and shares withheld for tax are left out.
- Who files it
- The insider, usually through the company, within two business days of the trade.
- How current
- We collect new filings throughout the day on SEC business days.
- Worth knowing
- Sales are often routine: insiders sell to diversify, to pay taxes, or under a 10b5-1 plan set up months in advance. A purchase with their own money is less common, which is why many investors pay closer attention to it.
All of this comes from public filings.
Source and freshness · Information, not investment advice (disclaimer).
Open-market trades per day, last 30 days
Purchases Sales
By trade date. Insiders have two business days to file, so the most recent days fill in later.
Latest open-market insider trades
Showing: ticker COST
| Traded | Insider | Company | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Nov 12, 2026 | Sarah Catherine George Executive Vice President | COST Costco Wholesale Corporation | Sale | 756 | $1,096.01 | $829.1K Sale | Form 4 ↗ |
| Nov 11, 2026 | Teresa A. Jones Executive Vice President | COST Costco Wholesale Corporation | Sale | 900 | $1,083.95 | $975.6K Sale | Form 4 ↗ |
| Sep 29, 2026 | Caton Frates Sr. Executive Vice President | COST Costco Wholesale Corporation | Sale | 801 | $915.93 | $733.3K Sale | Form 4 ↗ |
| Sep 29, 2026 | Claudine Adamo Executive Vice President | COST Costco Wholesale Corporation | Sale | 2,200 | $915.93 | $2.0M Sale | Form 4 ↗ |
| Jun 23, 2026 | Kenneth D. Denman Director | COST Costco Wholesale Corporation | Sale | 885 | $957.45 | $847.3K Sale | Form 4 ↗ |
| Apr 1, 2026 | Caton Frates Executive Vice President | COST Costco Wholesale Corporation | Sale | 700 | $993.00 | $695.1K Sale | Form 4 ↗ |
| Mar 9, 2026 | Claudine Adamo Executive Vice President | COST Costco Wholesale Corporation | Sale | 730 | $1,003.02 | $732.2K Sale | Form 4 ↗ |
| Jan 21, 2026 | Teresa A. Jones Executive Vice President | COST Costco Wholesale Corporation | Sale | 850 | $986.26 | $838.3K Sale | Form 4 ↗ |
| Jan 16, 2026 | Susan L. Decker Director | COST Costco Wholesale Corporation | Sale | 458 | $955.00 | $437.4K Sale | Form 4 ↗ |
| Jan 14, 2026 | James C. Klauer Executive Vice President | COST Costco Wholesale Corporation | Sale | 1,500 | $939.00 | $1.4M Sale | Form 4 ↗ |
| Jan 9, 2026 | Russell D. Miller Sr. Executive Vice President | COST Costco Wholesale Corporation | Sale | 1,500 | $916.32 | $1.4M Sale | Form 4 ↗ |
| Dec 30, 2025 | Javier Polit Executive Vice President | COST Costco Wholesale Corporation | Sale | 558 | $862.90 | $481.8K Sale | Form 4 ↗ |
| Dec 29, 2025 | Javier Polit Executive Vice President | COST Costco Wholesale Corporation | Sale | 2,049 | $867.21 | $1.8M Sale | Form 4 ↗ |
| Nov 7, 2025 | William Richard Wilcox Executive Vice President | COST Costco Wholesale Corporation | Sale | 2,400 | $930.13 | $2.2M Sale | Form 4 ↗ |
| Oct 24, 2025 | Tiffany Marie Barbre | COST Costco Wholesale Corporation | Sale | 1,239 | $934.62 | $1.2M Sale | Form 4 ↗ |
| Oct 24, 2025 | Claudine Adamo Executive Vice President | COST Costco Wholesale Corporation | Sale | 2,700 | $935.68 | $2.5M Sale | Form 4 ↗ |
| Sep 29, 2025 | Russell D. Miller Sr. Executive Vice President | COST Costco Wholesale Corporation | Sale | 3,381 | $915.00 | $3.1M Sale | Form 4 ↗ |
| Sep 29, 2025 | Caton Frates Executive Vice President | COST Costco Wholesale Corporation | Sale | 1,540 | $910.02 | $1.4M Sale | Form 4 ↗ |
| Aug 20, 2025 | Teresa A. Jones Executive Vice President | COST Costco Wholesale Corporation | Sale | 600 | $992.05 | $595.2K Sale | Form 4 ↗ |
| Jul 14, 2025 | Yoram Rubanenko Executive Vice President | COST Costco Wholesale Corporation | Sale | 4,000 | $974.96 | $3.9M Sale | Form 4 ↗ |
| Jun 18, 2025 | Susan L. Decker Director | COST Costco Wholesale Corporation | Sale | 1 | $978.40 | $978 Sale | Form 4 ↗ |
| Jun 18, 2025 | Susan L. Decker Director | COST Costco Wholesale Corporation | Sale | 546 | $980.00 | $535.1K Sale | Form 4 ↗ |
| Jun 9, 2025 | Patrick J. Callans Executive Vice President | COST Costco Wholesale Corporation | Sale | 3,000 | $1,002.77 | $3.0M Sale | Form 4 ↗ |
| Jun 6, 2025 | Pierre Riel Executive Vice President | COST Costco Wholesale Corporation | Sale | 2,000 | $1,014.15 | $2.0M Sale | Form 4 ↗ |
| Apr 17, 2025 | James C. Klauer Executive Vice President | COST Costco Wholesale Corporation | Sale | 4,000 | $981.07 | $3.9M Sale | Form 4 ↗ |
| Mar 27, 2025 | Gary Millerchip Executive Vice President | COST Costco Wholesale Corporation | Sale | 1,100 | $940.01 | $1.0M Sale | Form 4 ↗ |
| Mar 24, 2025 | Claudine Adamo Executive Vice President | COST Costco Wholesale Corporation | Sale | 900 | $922.56 | $830.3K Sale | Form 4 ↗ |
| Mar 18, 2025 | Caton Frates Executive Vice President | COST Costco Wholesale Corporation | Sale | 850 | $900.25 | $765.2K Sale | Form 4 ↗ |
| Mar 11, 2025 | Roland Michael Vachris President and CEO, Director | COST Costco Wholesale Corporation | Sale | 3,600 | $931.00 | $3.4M Sale | Form 4 ↗ |
| Oct 24, 2024 | Richard A. Galanti Executive Vice President, Director | COST Costco Wholesale Corporation | Sale | 1,416 | $894.68 | $1.3M Sale | Form 4 ↗ |
| Oct 23, 2024 | Teresa A. Jones Executive Vice President | COST Costco Wholesale Corporation | Sale | 800 | $896.55 | $717.2K Sale | Form 4 ↗ |
| Oct 15, 2024 | Pierre Riel Executive Vice President | COST Costco Wholesale Corporation | Sale | 2,000 | $896.71 | $1.8M Sale | Form 4 ↗ |
| Oct 11, 2024 | Russell D. Miller Sr. Executive Vice President | COST Costco Wholesale Corporation | Sale | 4,400 | $891.15 | $3.9M Sale | Form 4 ↗ |
| Sep 30, 2024 | Claudine Adamo Executive Vice President | COST Costco Wholesale Corporation | Sale | 3,200 | $888.99 | $2.8M Sale | Form 4 ↗ |
| Sep 30, 2024 | Patrick J. Callans Executive Vice President | COST Costco Wholesale Corporation | Sale | 2,500 | $893.94 | $2.2M Sale | Form 4 ↗ |
| Sep 30, 2024 | Caton Frates Executive Vice President | COST Costco Wholesale Corporation | Sale | 1,700 | $883.35 | $1.5M Sale | Form 4 ↗ |
36 items, most recent first (up to 50). Every row links to its original filing. Updated Nov 15, 2026, 6:11 PM EST.
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