Ran Zheng - Oct 1, 2021 Form 4 Insider Report for Caribou Biosciences, Inc. (CRBU)

Role
Director
Signature
/s/ Barbara G. McClung, attorney-in-fact
Stock symbol
CRBU
Transactions as of
Oct 1, 2021
Transactions value $
$0
Form type
4
Date filed
10/4/2021, 04:10 PM
Previous filing
Oct 1, 2021
Next filing
Dec 21, 2021

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 Stock Option (right to buy) Award $0 +44K $0.00 44K Oct 1, 2021 Common Stock 44K $22.31 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The option becomes exercisable in three equal annual installments beginning October 1, 2022.