Rachel E. Haurwitz

Companies

• Caribou Biosciences, Inc.Chief executive officer Dec 21, 2021 to now¹
• Caribou Biosciences, Inc.President Dec 21, 2021 to now¹
• Caribou Biosciences, Inc.Board member Jul 22, 2021 to now²
• Seer, IncBoard member Nov 12, 2021 to Jun 14, 2024³
• Caribou Biosciences, Inc.Officer Jul 22, 2021 to Jul 22, 2021²
• Intellia TherapeuticsBoard member May 5, 2016 to May 11, 2016⁴

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• CBCaribou Biosciences, Inc. CRBU3,816,545 shares⁵$1.8M at $0.46Feb 20, 2026
• Seer, Inc SEER87,615 shares⁶$177.9K at $2.03Jun 12, 2024

As of each latest filing. The line shows shares held over time.

Recent filings

• Feb 20, 2026Granted 151,700 shares of Caribou Biosciences, Inc.⁵
• Mar 14, 2025Bought 20,000 shares at $1.02 of Caribou Biosciences, Inc.⁷
• Feb 20, 2025Granted 136,750 shares of Caribou Biosciences, Inc.⁸
• Jun 12, 2024Granted 58,178 shares of Seer, Inc⁶
• Feb 20, 2024Granted 118,700 shares of Caribou Biosciences, Inc.⁹
• Jun 14, 2023Granted 23,443 shares of Seer, Inc¹⁰
• Jun 8, 2023Exercised options 10,000 shares at $2.96 of Caribou Biosciences, Inc.¹¹
• Mar 20, 2023Exercised options 10,000 shares at $2.96 of Caribou Biosciences, Inc.¹²
• Jun 15, 2022Granted 5,994 shares of Seer, Inc¹³
• May 9, 2022Exercised options 10,000 shares at $2.96 of Caribou Biosciences, Inc.¹⁴
• Jan 26, 2022Exercised options 10,000 shares at $2.96 of Caribou Biosciences, Inc.¹⁵
• Jan 26, 2022Exercised options 10,000 shares at $2.96 of Caribou Biosciences, Inc.¹⁶
• Sep 27, 2021Gift 3,349,395 shares of Caribou Biosciences, Inc.¹⁷
• Sep 27, 2021Gift 3,349,395 shares of Caribou Biosciences, Inc.¹⁷