Steven Kanner - Feb 6, 2024 Form 4 Insider Report for Caribou Biosciences, Inc. (CRBU)

Role
Chief Scientific Officer
Signature
/s/ Barbara G. McClung, as attorney-in-fact
Stock symbol
CRBU
Transactions as of
Feb 6, 2024
Transactions value $
$82,252
Form type
4
Date filed
2/8/2024, 05:06 PM
Previous filing
Feb 23, 2023
Next filing
Feb 22, 2024

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction CRBU Common Stock Options Exercise $82.3K +30.6K +9.45% $2.69 354K Feb 6, 2024 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 -30.6K -58.58% $0.00 21.6K Feb 6, 2024 Common Stock 30.6K $2.69 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 1/4th of the shares subject to this option vested on October 1, 2020 and an additional 1/48th of the aggregate number of shares subject to the option have vested or will vest on the corresponding day of each month thereafter, subject to the reporting person's continued services to the Issuer through the applicable vesting dates.