CRBU: Caribou Biosciences, Inc. 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 0 sales totaling - in the last 180 days.
Activist and 5% holders
| Filed | What | Holder | Stake | Change | Filing |
|---|---|---|---|---|---|
| 2026-07-27 | New 13G stake | BlackRock, Inc. | 7.20% | SEC |
Institutional ownership (Q2 2026)
137 institutions reported holding $80.08M of Caribou Biosciences, Inc. on Form 13F (137 the quarter before). 23 opened a new position and 22 sold out. Shares held by institutions: +29%.
| Largest holders | Shares | Value |
|---|---|---|
| BlackRock, Inc. | 7,815,843 | $13.76M |
| Pfizer Inc | 4,690,431 | $7.88M |
| VANGUARD CAPITAL MANAGEMENT LLC | 4,208,568 | $7.41M |
| MACKENZIE FINANCIAL CORP | 3,650,796 | $6.43M |
| RENAISSANCE TECHNOLOGIES LLC | 2,773,545 | $4.88M |
| Kynam Capital Management, LP | 2,503,302 | $4.41M |
| GEODE CAPITAL MANAGEMENT, LLC | 2,374,894 | $4.18M |
| STATE STREET CORP | 1,632,914 | $2.87M |
| BANK OF AMERICA CORP /DE/ | 1,410,958 | $2.48M |
| TWO SIGMA INVESTMENTS, LP | 1,046,279 | $1.84M |
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