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CIK 0001619856 · Non-accelerated filer<br>Smaller reporting company<br>Emerging growth company

Caribou Biosciences, Inc.

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Ticker
CRBU
Exchange
Nasdaq
Industry
Biological Products, (No Diagnostic Substances)
FY end
Dec 31
Incorporated
DE
Entity type
operating
EIN
453728228
Phone
510-982-6030
Business address
2929 7TH STREET, SUITE 105, BERKELEY, CA, 94710
Open-market buys, last 90 days
$0
in 0 filings
Open-market sales, last 90 days
$0
in 0 filings

Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.

Date Insider Transaction Shares Price Value Owned after
2026-02-20 Haurwitz Rachel E. President and CEO Grant or award +151,700 447,150
2026-02-20 Haurwitz Rachel E. President and CEO Grant or award · Option to purchase Common Stock +682,500 682,500
2026-02-20 Braunstein Scott Director Grant or award · Option to purchase Common Stock +45,000 45,000
2026-02-20 GUGGENHIME ANDREW Director Grant or award · Option to purchase Common Stock +45,000 45,000
2025-03-14 Haurwitz Rachel E. President and CEO Purchase +20,000 $1.02 $20K 3,369,395
2025-02-21 Khan Ruhi Ahmad Chief Business Officer Sale −3,564 $1.35 $5K 66,936
2025-02-21 Kanner Steven Chief Scientific Officer Sale −3,564 $1.35 $5K 431,556
2025-02-21 MCCLUNG BARBARA G Chief Legal Officer Sale −3,564 $1.35 $5K 443,502
2025-02-20 Albertson Tina M. Chief Medical Officer Grant or award +14,589 14,589
2025-02-20 Albertson Tina M. Chief Medical Officer Grant or award · Option to purchase Common Stock +66,137 66,137
2025-02-20 Richardson-Heron Dara Director Grant or award · Option to purchase Common Stock +40,500 40,500
2025-02-20 Khan Ruhi Ahmad Chief Business Officer Grant or award +37,500 70,500
2025-02-20 Khan Ruhi Ahmad Chief Business Officer Grant or award · Option to purchase Common Stock +170,000 170,000
2025-02-20 Zheng Ran Director Grant or award · Option to purchase Common Stock +40,500 40,500
2025-02-20 Whiting Nancy Director Grant or award · Option to purchase Common Stock +40,500 40,500
2025-02-20 Kanner Steven Chief Scientific Officer Grant or award +37,500 435,120
2025-02-20 Kanner Steven Chief Scientific Officer Grant or award · Option to purchase Common Stock +170,000 170,000
2025-02-20 Kelly Timothy P Chief Technology Officer Grant or award +37,500 37,500
2025-02-20 Kelly Timothy P Chief Technology Officer Grant or award · Option to purchase Common Stock +170,000 170,000
2025-02-20 JOHNSON DAVID LEE Director Grant or award · Option to purchase Common Stock +40,500 40,500

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