Companies / Caribou Biosciences, Inc.
Caribou Biosciences, Inc.
Nasdaq: CRBUCIK 1619856BERKELEY, CA
Financials · FY2025
Ownership
99.2M shares outstanding · as of Apr 30, 2026
Ownership
| Insiders | 1.01% | 1,001,074 |
| Institutions | 46.93% | 46,543,173 |
| Public float | 52.06% | 51,636,328 |
% of common shares outstanding (exact, from the latest cover-page filing). Institutions are quarterly 13F snapshots; insiders reflect current officers & directors.
Insiders 13
View all →| Insider | % of shares | Shares |
|---|---|---|
McClung Barbara GChief Legal Officer | 0.49% | 481,564 |
Haurwitz Rachel E.CEOPresident and CEO · Director | 0.45% | 447,150 |
Khan Ruhi AhmadFormerChief Business Officer | 0.11% | 104,998 |
Kelly Timothy PFormerChief Technology Officer | 0.07% | 73,125 |
Ryali SriramChief Financial Officer | 0.07% | 72,360 |
Albertson Tina M.FormerChief Medical Officer | 0.07% | 68,523 |
Braunstein ScottDirector | — | — |
Guggenhime AndrewDirector | — | — |
Johnson David LeeDirector | — | — |
Richardson-Heron DaraDirector | — | — |
Institutional holders 128
View all →| Holder | Value | % of shares |
|---|---|---|
| $13.76M | 7.88% | |
| $7.46M | 4.73% | |
| $6.84M | 4.34% | |
| $4.92M | 2.61% | |
| $3.98M | 2.52% | |
| $3.34M | 1.77% | |
| $2.87M | 1.65% | |
| $2.29M | 1.22% | |
| $2.21M | 1.40% | |
| $2.04M | 1.08% |
Activity
Jun 30, 2026View all →
InsidersInstitutions
Who's accumulating and trimming this stock (13F).| Date | Actor | Action | Security | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|---|
| Q2 2026 as of | BlackRock, Inc. 13F manager | Add | Common Stock | $9.99M | +5.7M +265.05% | 7,815,843 7.88% of shares | medium |
| Q2 2026 as of | State Street Corporation 13F manager | Add | Common Stock | $2.13M | +1.2M +285.79% | 1,632,914 1.65% of shares | low |
| Q1 2026 as of | Renaissance Technologies LLC 13F manager | Add | Common Stock | $1.81M | +951K +57.97% | 2,590,497 2.61% of shares | low |
| Q1 2026 as of | Two Sigma Investments, LP 13F manager | Add | Common Stock | $1.41M | +740K +72.53% | 1,759,934 1.77% of shares | low |
| Q3 2023 as of | Barclays PLC 13F manager | Add | Common Stock | $1.13M | +236K +1296.03% | 254,231 0.26% of shares | low |
| Q1 2024 as of | Barclays PLC 13F manager | Trim | Common Stock | $-854.5K | -166K -63.10% | 97,233 0.10% of shares | low |
| Q1 2026 as of | Marshall Wace, LLP 13F manager | Add | Common Stock | $616.7K | +325K +36.84% | 1,205,668 1.22% of shares | low |
| Q1 2026 as of | Millennium Management LLC 13F manager | Add | Common Stock | $584.1K | +307K +40.08% | 1,074,421 1.08% of shares | low |
Securities
via CUSIP / OpenFIGI
| Symbol | Type | CUSIP |
|---|---|---|
| CRBU | Common Stock | 142038108 |