Rachel E. Haurwitz - 21 Feb 2023 Form 4 Insider Report for Caribou Biosciences, Inc. (CRBU)

Signature
/s/ Barbara G. McClung, as attorney-in-fact
Issuer symbol
CRBU
Transactions as of
21 Feb 2023
Net transactions value
$0
Form type
4
Filing time
23 Feb 2023, 16:14:23 UTC
Previous filing
17 Jun 2022
Next filing
22 Mar 2023

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 +510,500 $0.000000 510,500 21 Feb 2023 Common Stock 510,500 $6.12 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The shares subject to this option will vest in equal monthly installments starting on the first monthly anniversary of the grant date until the option is fully vested on February 21, 2027, subject to the reporting person's continued service to the Issuer through the applicable vesting dates.