Rachel E. Haurwitz - Mar 14, 2025 Form 4 Insider Report for Caribou Biosciences, Inc. (CRBU)

Role: President and CEO, Director
Signature: /s/ Barbara G. McClung, as attorney-in-fact
Stock symbol: CRBU
Transactions as of: Mar 14, 2025
Transactions value $: $20,400
Form type: 4
Date filed: 3/17/2025, 08:01 AM
Previous filing: Feb 21, 2025
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	CRBU	Common Stock	Purchase	$20.4K	+20K	+0.6%	$1.02	3.37M	Mar 14, 2025	By Trust	F1, F2
holding	CRBU	Common Stock						295K	Mar 14, 2025	Direct

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	This transaction was executed in multiple trades on 3/14/2025 at prices ranging from $1.00 to $1.03 per share, inclusive. The price reported above reflects the weighted average purchase price. The reporting person hereby undertakes to provide upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares purchased at each separate price within the specified range.
F2	Shares are held by The City Canyon Family Trust dated May 31, 2021, of which the Reporting Person is a Co-Trustee with her spouse.

Content

This transaction was executed in multiple trades on 3/14/2025 at prices ranging from $1.00 to $1.03 per share, inclusive. The price reported above reflects the weighted average purchase price. The reporting person hereby undertakes to provide upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares purchased at each separate price within the specified range.

Shares are held by The City Canyon Family Trust dated May 31, 2021, of which the Reporting Person is a Co-Trustee with her spouse.