Barbara G. Mcclung - Sep 15, 2022 Form 4 Insider Report for Caribou Biosciences, Inc. (CRBU)

Role
Chief Legal Officer
Signature
/s/ Barbara G. McClung
Stock symbol
CRBU
Transactions as of
Sep 15, 2022
Transactions value $
$74,231
Form type
4
Date filed
9/16/2022, 04:14 PM
Previous filing
Dec 21, 2021
Next filing
Feb 23, 2023

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction CRBU Common Stock Options Exercise $207 +77 +0.02% $2.69 349K Sep 15, 2022 Direct
transaction CRBU Common Stock Options Exercise $74K +27.5K +7.88% $2.69 377K Sep 15, 2022 Direct

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 Options Exercise $0 -77 -100% $0.00* 0 Sep 15, 2022 Common Stock 77 $2.69 Direct F1
transaction CRBU Option to purchase Common Stock Options Exercise $0 -27.5K -36.77% $0.00 47.3K Sep 15, 2022 Common Stock 27.5K $2.69 Direct F2
* 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 vested in equal monthly installments until the option became fully vested on June 12, 2022.
F2 The shares subject to this option have vested or will vest in equal monthly installments until the option is fully vested on October 1, 2023, subject to the reporting person's continued service to the Issuer through the applicable vesting dates.