Nancy Whiting - Dec 20, 2021 Form 4/A - Amendment Insider Report for Caribou Biosciences, Inc. (CRBU)

Role
Director
Signature
/s/ Barbara G. McClung, as attorney-in-fact
Stock symbol
CRBU
Transactions as of
Dec 20, 2021
Transactions value $
$0
Form type
4/A - Amendment
Date filed
12/22/2021, 08:17 PM
Date Of Original Report
Dec 21, 2021
Previous filing
Sep 9, 2021
Next filing
Feb 23, 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 +13.1K $0.00 13.1K Dec 20, 2021 Common Stock 13.1K $15.16 Direct F1, F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 On December 21, 2021, the reporting person filed a Form 4 to report a stock option grant. Due to a clerical error, that grant was shown as covering 13,750 shares. The correct number of shares is 13,060. This amendment reports the correct number of shares.
F2 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 December 20, 2025, subject to the reporting person's continued service to the Issuer through the applicable vesting dates.