0000950170-24-038692.txt : 20240329 0000950170-24-038692.hdr.sgml : 20240329 20240329163008 ACCESSION NUMBER: 0000950170-24-038692 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20240327 FILED AS OF DATE: 20240329 DATE AS OF CHANGE: 20240329 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Hassig Christian CENTRAL INDEX KEY: 0001730657 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-41989 FILM NUMBER: 24804418 MAIL ADDRESS: STREET 1: C/O SIERRA ONCOLOGY, INC. STREET 2: 885 W. GEORGIA ST., #2150 CITY: VANCOUVER STATE: A1 ZIP: V6C 3E8 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: Boundless Bio, Inc. CENTRAL INDEX KEY: 0001782303 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] ORGANIZATION NAME: 03 Life Sciences IRS NUMBER: 830751369 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 9880 CAMPUS POINT DRIVE STREET 2: SUITE 120 CITY: SAN DIEGO STATE: CA ZIP: 92121 BUSINESS PHONE: (858) 766-9912 MAIL ADDRESS: STREET 1: 9880 CAMPUS POINT DRIVE STREET 2: SUITE 120 CITY: SAN DIEGO STATE: CA ZIP: 92121 4 1 ownership.xml 4 X0508 4 2024-03-27 0001782303 Boundless Bio, Inc. BOLD 0001730657 Hassig Christian C/O BOUNDLESS BIO, INC. 9880 CAMPUS POINT DRIVE, SUITE 120 SAN DIEGO CA 92121 false true false false Chief Scientific Officer false Stock Option 16.00 2024-03-27 4 A false 48703 0 A 2034-03-26 Common Stock 48703 48703 D The stock option vests in 48 substantially equal monthly installments beginning on April 27, 2024. /s/ Jessica Oien, Attorney-in-Fact for Christian Hassig 2024-03-29