CRBU · Caribou Biosciences Inc. Common Stock
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| Barbara G. McClung Chief Legal Officer | ▼ Sell | Open Market | 481,564 Shares held | 2/24/2026 | View profile |
| Rachel E. Haurwitz Director | ▲ Buy | Grant | 447,150 Shares held | 2/20/2026 | View profile |
| Steven Kanner Chief Scientific Officer | ▼ Sell | Open Market | 431,556 Shares held | 2/21/2025 | View profile |
| Ryan Fischesser VP of Finance and Controller | ▲ Buy | Grant | 118,854 Shares held | 11/20/2024 | View profile |
| Ruhi Ahmad Khan Chief Business Officer | ▼ Sell | Open Market | 104,998 Shares held | 2/24/2026 | View profile |
| Timothy P. Kelly Chief Technology Officer | ▼ Sell | Open Market | 73,125 Shares held | 2/25/2026 | View profile |
| Sriram Ryali Chief Financial Officer | ▲ Buy | Grant | 72,360 Shares held | 2/20/2026 | View profile |
| Tina M. Albertson Chief Medical Officer | ▼ Sell | Open Market | 68,523 Shares held | 2/24/2026 | View profile |
| Syed Ali-aamir Rizvi Chief Medical Officer | ▼ Sell | Open Market | 59,373 Shares held | 1/19/2023 | View profile |
| Jason O'Byrne EVP & Chief Financial Officer | ▲ Buy | Grant | 59,224 Shares held | 2/20/2024 | View profile |
Transaction History
| Timothy P. Kelly | ▼ Sell | Open Market | 6,228 | $12K | 2/25/2026 |
| Timothy P. Kelly | ▼ Sell | Open Market | 3,147 | $6K | 2/24/2026 |
| Barbara G. McClung | ▼ Sell | Open Market | 6,938 | $14K | 2/24/2026 |
| Ruhi Ahmad Khan | ▼ Sell | Open Market | 6,938 | $14K | 2/24/2026 |
| Tina M. Albertson | ▼ Sell | Open Market | 1,066 | $2K | 2/24/2026 |
| Sriram Ryali | ▲ Buy | Grant | 55,000 | $0 | 2/20/2026 |
| Rachel E. Haurwitz | ▲ Buy | Grant | 151,700 | $0 | 2/20/2026 |
| Timothy P. Kelly | ▲ Buy | Grant | 45,000 | $0 | 2/20/2026 |
| Barbara G. McClung | ▲ Buy | Grant | 45,000 | $0 | 2/20/2026 |
| Ruhi Ahmad Khan | ▲ Buy | Grant | 45,000 | $0 | 2/20/2026 |
| Tina M. Albertson | ▲ Buy | Grant | 55,000 | $0 | 2/20/2026 |
| Rachel E. Haurwitz | ▲ Buy | Open Market | 20,000 | $20K | 3/14/2025 |
| Barbara G. McClung | ▼ Sell | Open Market | 3,564 | $5K | 2/21/2025 |
| Ruhi Ahmad Khan | ▼ Sell | Open Market | 3,564 | $5K | 2/21/2025 |
| Steven Kanner | ▼ Sell | Open Market | 3,564 | $5K | 2/21/2025 |
| Ruhi Ahmad Khan | ▲ Buy | Grant | 37,500 | $0 | 2/20/2025 |
| Timothy P. Kelly | ▲ Buy | Grant | 37,500 | $0 | 2/20/2025 |
| Steven Kanner | ▲ Buy | Grant | 37,500 | $0 | 2/20/2025 |
| Barbara G. McClung | ▲ Buy | Grant | 37,500 | $0 | 2/20/2025 |
| Rachel E. Haurwitz | ▲ Buy | Grant | 136,750 | $0 | 2/20/2025 |
| Tina M. Albertson | ▲ Buy | Grant | 14,589 | $0 | 2/20/2025 |
| Sriram Ryali | ▲ Buy | Open Market | 17,360 | $25K | 1/29/2025 |
| Ryan Fischesser | ▲ Buy | Grant | 25,000 | $0 | 11/20/2024 |
| Jason O'Byrne | ▲ Buy | Grant | 33,000 | $0 | 2/20/2024 |
| Barbara G. McClung | ▲ Buy | Grant | 33,000 | $0 | 2/20/2024 |
| Ruhi Ahmad Khan | ▲ Buy | Grant | 33,000 | $0 | 2/20/2024 |
| Rachel E. Haurwitz | ▲ Buy | Grant | 118,700 | $0 | 2/20/2024 |
| Steven Kanner | ▲ Buy | Grant | 33,000 | $0 | 2/20/2024 |
| Steven Kanner | ▲ Buy | Option Exercise | 30,577 | $82K | 2/6/2024 |
| Rachel E. Haurwitz | ▲ Buy | Option Exercise | 10,000 | $30K | 6/8/2023 |
| Rachel E. Haurwitz | ▲ Buy | Option Exercise | 10,000 | $30K | 3/20/2023 |
| Syed Ali-aamir Rizvi | ▼ Sell | Open Market | 5,627 | $36K | 1/19/2023 |
| Steven Kanner | ▲ Buy | Option Exercise | 21,401 | $58K | 12/2/2022 |
| Ryan Fischesser | ▼ Sell | Open Market | 10,000 | $108K | 10/6/2022 |
| Ryan Fischesser | ▲ Buy | Option Exercise | 2,839 | $8K | 10/6/2022 |
| Ryan Fischesser | ▲ Buy | Option Exercise | 2,839 | $12K | 10/6/2022 |
| Barbara G. McClung | ▲ Buy | Option Exercise | 77 | $207 | 9/15/2022 |
| Barbara G. McClung | ▲ Buy | Option Exercise | 27,518 | $74K | 9/15/2022 |
| Steven Kanner | ▲ Buy | Option Exercise | 43,248 | $116K | 8/25/2022 |
| Steven Kanner | ▼ Sell | Open Market | 43,248 | $485K | 8/25/2022 |
| Ryan Fischesser | ▲ Buy | Grant | 4,848 | $0 | 8/22/2022 |
| Steven Kanner | ▲ Buy | Option Exercise | 68,306 | $124K | 5/13/2022 |
| Steven Kanner | ▲ Buy | Option Exercise | 6,114 | $16K | 5/13/2022 |
| Rachel E. Haurwitz | ▲ Buy | Option Exercise | 10,000 | $30K | 5/9/2022 |
| Ryan Fischesser | ▲ Buy | Option Exercise | 1,136 | $3K | 5/5/2022 |
| Ryan Fischesser | ▲ Buy | Option Exercise | 1,138 | $5K | 5/5/2022 |
| Ryan Fischesser | ▲ Buy | Option Exercise | 1,136 | $3K | 3/15/2022 |
| Ryan Fischesser | ▲ Buy | Option Exercise | 1,138 | $5K | 3/15/2022 |
| Steven Kanner | ▲ Buy | Option Exercise | 9,171 | $25K | 3/4/2022 |
| Steven Kanner | ▲ Buy | Option Exercise | 1,549 | $6K | 3/4/2022 |
| Jason O'Byrne | ▲ Buy | Option Exercise | 24,336 | $100K | 2/8/2022 |
| Rachel E. Haurwitz | ▲ Buy | Option Exercise | 10,000 | $30K | 1/26/2022 |
| Syed Ali-aamir Rizvi | ▲ Buy | Grant | 60,000 | $0 | 1/25/2022 |
| Ryan Fischesser | ▲ Buy | Open Market | 569 | $2K | 1/11/2022 |
| Ryan Fischesser | ▲ Buy | Open Market | 6,818 | $28K | 1/11/2022 |
| Ryan Fischesser | ▲ Buy | Open Market | 1,136 | $3K | 12/20/2021 |
| Barbara G. McClung | ▲ Buy | Open Market | 12 | $32 | 12/7/2021 |
| Barbara G. McClung | ▲ Buy | Open Market | 6,115 | $16K | 12/7/2021 |
| Barbara G. McClung | ▲ Buy | Open Market | 9,176 | $25K | 10/20/2021 |
| Barbara G. McClung | ▲ Buy | Open Market | 43 | $116 | 10/20/2021 |
| Steven Kanner | ▲ Buy | Open Market | 99,548 | $180K | 10/12/2021 |
| Steven Kanner | ▲ Buy | Open Market | 698 | $1K | 10/12/2021 |
| Steven Kanner | ▲ Buy | Open Market | 14,614 | $39K | 10/12/2021 |
| Ryan Fischesser | ▲ Buy | Open Market | 1,746 | $5K | 10/11/2021 |