CRBU · Insider trading · 13F holders · Congress trades
Caribou Biosciences Inc (CRBU)
Who is buying and selling CRBU: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 4
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $0
- Congress trades, 12 months
- 0
CRBU at a glance
- No open-market insider purchases or sales of CRBU were filed in the last 90 days.
- 4 13F filers hold CRBU among their 50 largest positions, worth $13.6M combined. The biggest bets by portfolio weight are Pfizer Inc (4.6%), Kynam Capital Management, LP (0.2%) and Bruce & Co., Inc. (0.1%).
- No member of Congress has disclosed a trade in CRBU.
CRBU insider trading
No open-market insider purchases or sales of CRBU were filed in the last 90 days.
Who owns CRBU? Hedge funds and superinvestors
4 13F filers hold CRBU among their 50 largest positions, worth $13.6M combined. The biggest bets by portfolio weight are Pfizer Inc (4.6%), Kynam Capital Management, LP (0.2%) and Bruce & Co., Inc. (0.1%).
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Pfizer IncCorporation | 4.6% | $7.9M | 4,690,431 | +0.0% shares | Q2 2026 |
| Kynam Capital Management, LPHedge fund | 0.2% | $4.4M | 2,503,302 | +0.0% shares | Q2 2026 |
| 72 Investment Holdings, LLCInvestment manager | 1.7% | $834K | 474,067 | +0.0% shares | Q2 2026 |
| Bruce & Co., Inc.Mutual fund manager | 0.1% | $440K | 250,000 | +0.0% shares | Q2 2026 |
Each manager counts with its latest 13F (Q2 2026: 4). Screen CRBU in the grand portfolio →
CRBU stock trades by members of Congress
No member of Congress has disclosed a trade in CRBU.
CRBU questions and answers
Are insiders buying CRBU stock?
No open-market insider purchases or sales of CRBU were filed in the last 90 days.
Which hedge funds own CRBU?
4 13F filers hold CRBU among their 50 largest positions, worth $13.6M combined. The biggest bets by portfolio weight are Pfizer Inc (4.6%), Kynam Capital Management, LP (0.2%) and Bruce & Co., Inc. (0.1%).
Has Congress traded CRBU?
No member of Congress has disclosed a trade in CRBU.
Who is the largest holder of CRBU?
Among 13F filers, Pfizer Inc reports the largest CRBU position, $7.9M (4,690,431 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Pfizer Inc's: 4.6% of its portfolio.
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