0000950170-24-038696.txt : 20240329 0000950170-24-038696.hdr.sgml : 20240329 20240329163027 ACCESSION NUMBER: 0000950170-24-038696 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: Hornby Zachary CENTRAL INDEX KEY: 0001602227 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-41989 FILM NUMBER: 24804439 MAIL ADDRESS: STREET 1: C/O IGNYTA, INC. STREET 2: 11095 FLINTKOTE AVENUE, SUITE D CITY: SAN DIEGO STATE: CA ZIP: 92121 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 0001602227 Hornby Zachary C/O BOUNDLESS BIO, INC. 9880 CAMPUS POINT DRIVE, SUITE 120 SAN DIEGO CA 92121 true true false false President & CEO false Stock Option 16.00 2024-03-27 4 A false 162343 0 A 2034-03-26 Common Stock 162343 162343 D The stock option vests in 48 substantially equal monthly installments beginning on April 27, 2024. /s/ Jessica Oien, Attorney-in-Fact for Zachary Hornby 2024-03-29