Company profile
Costco Wholesale Corp /new Insider Trading
COSTEvery SEC Form 4 insider trading filing for Costco Wholesale Corp /new (COST) since April 2023 — open-market buys and sells by directors and officers, option exercises, and cluster activity, updated as each filing is reported to the SEC. Why 2023?
- Exchange
- Nasdaq
- Sector
- Retail-Variety Stores
- CIK
- 0000909832
- Filings
- 177
- Insiders
- 28
- Last filing
- 2026-07-10
Activity summary
No insider transactions in the last 30 days. The most recent was on July 10, 2026, when Raikes Jeffrey S sold 5,249 shares. 177 filings from 28 insiders are on record below.
Three year balance
Buy and sell value by quarter, Q4 23 to Q3 26. Costco Wholesale Corp /new insiders are net sellers across the period shown.
Bars below the rule are sales, above are purchases. Largest quarter on the chart is $27.1M.
90 day insight
Over the last 90 days, Costco Wholesale Corp /new insiders sold $847K across 1 transaction with no open-market purchases.
- Most active insider: Denman Kenneth D with 1 transaction totaling $847K.
- Largest single sale: $847K by Denman Kenneth D on Jun 23, 2026.
Activity skews bearish — sales outpace buys.
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jul 10, 2026 | Raikes Jeffrey S | COST | Gift | 5,249 | — | — |
| Jun 23, 2026 | Denman Kenneth D | COST | Sale | 885 | $957.45 | $847K |
| Apr 1, 2026 | Frates Caton | COST | Sale | 700 | $993.00 | $695K |
| Mar 12, 2026 | George Sarah Catherine | COST | I | 642.125 | $991.21 | $636K |
| Mar 11, 2026 | Millerchip Gary | COST | Tax Withholding | 1,154.017 | $992.23 | $1.15M |
45 more transactions hidden
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The same rows, over the API.
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-H "X-Api-Key: $KEY"Top insiders
By total value filed.
Institutional Ownership
Top 13F-HR holders of Costco Wholesale Corp /new as of 2026-06-30
Data source: quarterly 13F-HR filings — institutional holders report positions within 45 days of quarter end. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →