X0306 4/A 2022-03-02 2022-03-02 0 0001829802 Sensei Biotherapeutics, Inc. SNSE 0001797409 Cambrian BioPharma Inc 228 PARK AVENUE S. #66643 NEW YORK NY 10003 0 0 1 0 Common Stock 2022-03-02 4 P 0 1203 3.20 A 5231488 D This Form 4/A is being filed solely to correct the number of shares beneficially owned following the transaction reported herein. These shares are held by Cambrian Biopharma, Inc., a Delaware corporation ("Cambrian"). The Chief Executive Officer of Cambrian, James Peyer, may direct the voting and disposition of the shares held by Cambrian, subject in certain instances to the approval of Cambrian's Board of Directors. Mr. Peyer disclaims beneficial ownership of such shares. Cambrian BioPharma Inc, by: /s/ James Peyer 2022-06-10