0001493152-23-006669.txt : 20230303 0001493152-23-006669.hdr.sgml : 20230303 20230303160549 ACCESSION NUMBER: 0001493152-23-006669 CONFORMED SUBMISSION TYPE: 3 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20230223 FILED AS OF DATE: 20230303 DATE AS OF CHANGE: 20230303 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: COMMODORE CAPITAL LP CENTRAL INDEX KEY: 0001831942 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 3 SEC ACT: 1934 Act SEC FILE NUMBER: 001-40505 FILM NUMBER: 23703817 BUSINESS ADDRESS: STREET 1: 444 MADISON AVENUE STREET 2: 35TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10022 BUSINESS PHONE: 917-970-1730 MAIL ADDRESS: STREET 1: 444 MADISON AVENUE STREET 2: 35TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10022 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: Ambrx Biopharma Inc. CENTRAL INDEX KEY: 0001836056 STANDARD INDUSTRIAL CLASSIFICATION: BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836] IRS NUMBER: 571147346 STATE OF INCORPORATION: E9 FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 10975 NORTH TORREY PINES ROAD CITY: LA JOLLA STATE: CA ZIP: 92037 BUSINESS PHONE: (858) 729-3339 MAIL ADDRESS: STREET 1: 10975 NORTH TORREY PINES ROAD CITY: LA JOLLA STATE: CA ZIP: 92037 3 1 ownership.xml X0206 3 2023-02-23 0 0001836056 Ambrx Biopharma Inc. AMAM 0001831942 COMMODORE CAPITAL LP 444 MADISON AVENUE 35TH FLOOR NEW YORK NY 10022 0 0 1 0 Ordinary Shares 35700000 I By Commodore Capital Master LP The ordinary shares of the Issuer, par value $0.0001 per share (the "Ordinary Shares") may be represented by American Depositary Shares ("ADSs"). Each ADS represents seven Ordinary Shares. As of February 23, 2023, the Reporting Person owns 5,100,000 ADSs, representing 35,700,000 Ordinary Shares. The securities are held directly by Commodore Capital Master LP ("Commodore Master"). Commodore Capital LP ("Commodore Capital") is the investment manager to Commodore Master. Michael Kramarz and Robert Egen Atkinson are the managing partners of Commodore Capital and exercise investment and dispositive power over the securities held by Commodore Master. Each of Commodore Capital, Dr. Kramarz and Dr. Atkinson disclaim beneficial ownership of such securities, except to the extent of their pecuniary interest therein. This report shall not be deemed an admission that Commodore Capital, Commodore Master, Dr. Kramarz and Dr. Atkinson or any other person is the beneficial owner of the securities reported herein for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose. /s/ Michael Kramarz, Managing Partner 2023-03-03