Andrew Guggenhime - Feb 20, 2024 Form 4 Insider Report for Caribou Biosciences, Inc. (CRBU)

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	CRBU	Option to purchase Common Stock	Award	$0	+39.5K		$0.00	39.5K	Feb 20, 2024	Common Stock	39.5K	$6.81	Direct	F1

Showing 1 to 1 of 1 entries

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

Id	Content
F1	One-twelfth of the shares subject to this option will vest on each monthly anniversary of the grant date such that the option will be fully vested on February 20, 2025, subject to the reporting person continuing to provide service to the Issuer through each such vesting date.