Caribou Biosciences, Inc.
CRBU- Exchange
- Nasdaq
- Industry
- Biological Products, (No Diagnostic Substances)
- SEC CIK
- 0001619856
No open-market purchases or sales by Caribou Biosciences, Inc. insiders were filed in the last 90 days; 137 institutions reported holding it in 13F filings for Q2 2026, worth $84.8M in total; Maverick Capital is the only superinvestor holding it.
Holders of 5% or more of CRBU
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Caribou Biosciences, Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| BlackRock, Inc. | 13G | 7.20%7.18M shares | +5.20 ppfrom 2.00% | Apr 17, 20253 filings | Jul 27, 2026 | SEC |
| Haurwitz Rachel E. | 13D | 5.00%4.72M shares | – | Feb 4, 20222 filings | Apr 25, 2025 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
13 Schedule 13D and 13G filings on Caribou Biosciences, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Jul 27, 20264:25 PM ET | BlackRock, Inc. | 13G | 7.20%7.18M shares | +5.20 ppfrom 2.00% | Jun 30, 2026 | SEC |
| Jul 16, 20257:02 PM ET | BlackRock, Inc. | 13G/A | 2.00%1.84M shares | −4.80 ppfrom 6.80%Below 5% | Jun 30, 2025 | SEC |
| Apr 30, 202510:58 AM ET | Vanguard Group Inc | 13G/A | 4.86%4.52M shares | –Below 5% | Mar 31, 2025 | SEC |
| Apr 25, 20254:40 PM ET | Haurwitz Rachel E.and 2 others | 13D | 5.00%4.72M shares | – | Apr 22, 2025 | SEC |
| Apr 17, 20259:35 AM ET | BlackRock, Inc. | 13G/A | 6.80%6.28M shares | – | Mar 31, 2025 | SEC |
| Feb 14, 20255:56 PM ET | Bank of America Corp | 13G/A | 2.20%1.95M shares | –Below 5% | Dec 31, 2024 | SEC |
| Mar 1, 20224:45 PM ET | DuPont E I de Nemours & Co | 13GOld format | – | New | – | SEC |
| Feb 14, 2022 | PFM Health Sciences, LP | 13G/AOld format | – | – | – | SEC |
| Feb 11, 2022 | Farallon Capital Management, L.L.C. | 13G/AOld format | – | – | – | SEC |
| Feb 4, 2022 | Haurwitz Rachel E. | 13DOld format | – | New | – | SEC |
| Aug 6, 2021 | PFM Health Sciences, LP | 13GOld format | – | New | – | SEC |
| Aug 3, 2021 | Farallon Capital Partners, L.P. | 13GOld format | – | New | – | SEC |
| Jul 29, 2021 | FMR LLC | 13GOld format | – | New | – | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Caribou Biosciences, Inc. shares.
No Form 144 notices for Caribou Biosciences, Inc. are on file.