0001628280-24-006421.txt : 20240222 0001628280-24-006421.hdr.sgml : 20240222 20240222171824 ACCESSION NUMBER: 0001628280-24-006421 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20240220 FILED AS OF DATE: 20240222 DATE AS OF CHANGE: 20240222 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Haurwitz Rachel E. CENTRAL INDEX KEY: 0001670579 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-40631 FILM NUMBER: 24666151 MAIL ADDRESS: STREET 1: C/O CARIBOU BIOSCIENCES, INC. STREET 2: 2929 7TH STREET, SUITE 105 CITY: BERKELEY STATE: CA ZIP: 94710 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: Caribou Biosciences, Inc. CENTRAL INDEX KEY: 0001619856 STANDARD INDUSTRIAL CLASSIFICATION: BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836] ORGANIZATION NAME: 03 Life Sciences IRS NUMBER: 453728228 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 2929 7TH STREET, SUITE 105 CITY: BERKELEY STATE: CA ZIP: 94710 BUSINESS PHONE: 510-982-6030 MAIL ADDRESS: STREET 1: 2929 7TH STREET, SUITE 105 CITY: BERKELEY STATE: CA ZIP: 94710 4 1 wk-form4_1708640281.xml FORM 4 X0508 4 2024-02-20 0 0001619856 Caribou Biosciences, Inc. CRBU 0001670579 Haurwitz Rachel E. C/O CARIBOU BIOSCIENCES, INC. 2929 7TH STREET, SUITE 105 BERKELEY CA 94710 1 1 0 0 President and CEO 0 Common Stock 2024-02-20 4 A 0 118700 0 A 158700 D Common Stock 3349395 I By Trust Option to purchase Common Stock 6.81 2024-02-20 4 A 0 546950 0 A 2034-02-19 Common Stock 546950 546950 D This reflects restricted stock units ("RSUs") that vest in four equal annual installments beginning on February 20, 2025, subject to the reporting person's continued services to the Issuer through the applicable vesting dates. The RSUs will be settled in stock within 30 days after each vesting date. Shares are held by The City Canyon Family Trust dated May 31, 2021, of which the Reporting Person is a Co-Trustee with her spouse. 25% of the options will vest upon the one-year anniversary of the grant date, February 20, 2025, and 1/48th will vest monthly thereafter over the 36-month period following the one-year cliff, subject to the reporting person's continued service to the Issuer through the applicable vesting dates. /s/ Barbara G. McClung, as attorney-in-fact 2024-02-22