<SEC-DOCUMENT>0000950170-24-037500-index.html : 20240327
<SEC-HEADER>0000950170-24-037500.hdr.sgml : 20240327
<ACCEPTANCE-DATETIME>20240327200852
ACCESSION NUMBER:		0000950170-24-037500
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20240327
FILED AS OF DATE:		20240327
DATE AS OF CHANGE:		20240327

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Hassig Christian
		CENTRAL INDEX KEY:			0001730657
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-41989
		FILM NUMBER:		24792974

	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
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>ownership.xml
<DESCRIPTION>3
<TEXT>
Document 1 - file: ownership.html

Document 1 - RAW XML: ownership.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>bold-ex24.htm
<DESCRIPTION>EX-24
<TEXT>
Document 2 - file: bold-ex24.htm

</DOCUMENT>
</SEC-DOCUMENT>