COST: Costco Wholesale Corporation insider trading, 5% holders and institutional ownership
From public SEC filings: open-market insider purchases and sales (Form 4, last 180 days), holders of 5% or more (Schedules 13D and 13G) and institutional ownership (Form 13F). Insider and 5% data delayed 48 hours.
Insider trading
0 open-market buys totaling - and 3 sales totaling $3.80M in the last 180 days.
Insider sales
| Trade date | Insider | Role | Value | 10b5-1 plan |
|---|---|---|---|---|
| 2026-10-13 | Wilcox William Richard | President | $1.05M | |
| 2026-09-29 | Frates Caton | President | $733K | |
| 2026-09-29 | Adamo Claudine | President | $2.02M |
Institutional ownership (Q2 2026)
4,273 institutions reported holding $293.61B of Costco Wholesale Corporation on Form 13F (4,281 the quarter before). 139 opened a new position and 155 sold out. Shares held by institutions: +1%.
| Largest holders | Shares | Value |
|---|---|---|
| BlackRock, Inc. | 34,202,834 | $32.00B |
| VANGUARD CAPITAL MANAGEMENT LLC | 28,976,605 | $27.11B |
| STATE STREET CORP | 18,384,951 | $17.20B |
| Invesco Ltd. | 13,989,137 | $13.09B |
| GEODE CAPITAL MANAGEMENT, LLC | 10,627,472 | $9.90B |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 10,402,555 | $9.73B |
| MORGAN STANLEY | 10,220,437 | $9.56B |
| BANK OF AMERICA CORP /DE/ | 7,249,774 | $6.78B |
| NORGES BANK | 6,474,767 | $6.06B |
| FMR LLC | 6,163,541 | $5.77B |
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