Caribou Biosciences, Inc. — Director's Dealing 2021

Nov 16, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Caribou Biosciences, Inc. (CRBU)
CIK: 0001619856
Period of Report: 2021-11-15

Reporting Person: Khan Ruhi Ahmad (Chief Business Officer)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-11-15	Option to purchase Common Stock	$21.73	A	225000	Acquired	2031-11-14	Common Stock (225000)	Direct

Footnotes

F1: 25% of the shares subject to the option shall vest on November 8, 2022, and the remaining shares subject to the option shall vest monthly thereafter (1/48 of the shares per month for the 36 months following the one-year cliff), subject to the reporting person's continued service to the Issuer through the applicable vesting dates.