0001104659-23-027622.txt : 20230302 0001104659-23-027622.hdr.sgml : 20230302 20230302070016 ACCESSION NUMBER: 0001104659-23-027622 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20230301 FILED AS OF DATE: 20230302 DATE AS OF CHANGE: 20230302 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: CLACKSON TIMOTHY P CENTRAL INDEX KEY: 0001242992 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-40869 FILM NUMBER: 23696364 MAIL ADDRESS: STREET 1: C/O ARIAD PHARMACEUTICALS INC STREET 2: 26 LANDSDOWNE STREET CITY: CAMBRIDGE STATE: MA ZIP: 02139 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: Theseus Pharmaceuticals, Inc. CENTRAL INDEX KEY: 0001745020 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] IRS NUMBER: 830712806 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 314 MAIN STREET, SUITE 04-200 CITY: CAMBRIDGE STATE: MA ZIP: 02142 BUSINESS PHONE: (857) 400-9491 MAIL ADDRESS: STREET 1: 314 MAIN STREET, SUITE 04-200 CITY: CAMBRIDGE STATE: MA ZIP: 02142 4 1 tm237858-1_4seq1.xml OWNERSHIP DOCUMENT X0306 4 2023-03-01 0 0001745020 Theseus Pharmaceuticals, Inc. THRX 0001242992 CLACKSON TIMOTHY P C/O THESEUS PHARMACEUTICALS, INC. 314 MAIN STREET CAMBRIDGE MA 02142 1 1 0 0 President and CEO Restricted Stock Units 2023-03-01 4 A 0 45625 0.00 A Common Stock 45625 45625 D Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Common Stock, par value $0.001, when vested. The RSUs are subject to a service-based vesting requirement, which shall be satisfied over a four-year period with 25% of the RSUs vesting on March 1, 2024 and 1/16th of the RSUs vesting quarterly thereafter, subject to the Reporting Person's continuous service with the issuer. The RSUs have no expiration date. /s/ Bradford Dahms - Attorney-in-Fact 2023-03-02