<SEC-DOCUMENT>0000950170-24-099303.txt : 20240820
<SEC-HEADER>0000950170-24-099303.hdr.sgml : 20240820
<ACCEPTANCE-DATETIME>20240820190858
ACCESSION NUMBER:		0000950170-24-099303
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20240819
FILED AS OF DATE:		20240820
DATE AS OF CHANGE:		20240820

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Abdollahian Neil
		CENTRAL INDEX KEY:			0001678223
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-41989
		FILM NUMBER:		241226796

	MAIL ADDRESS:	
		STREET 1:		6310 NANCY RIDGE DR
		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
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
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        <issuerName>Boundless Bio, Inc.</issuerName>
        <issuerTradingSymbol>BOLD</issuerTradingSymbol>
    </issuer>

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            <rptOwnerName>Abdollahian Neil</rptOwnerName>
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            <rptOwnerCity>SAN DIEGO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>92121</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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            <isOfficer>true</isOfficer>
            <isTenPercentOwner>false</isTenPercentOwner>
            <isOther>false</isOther>
            <officerTitle>Chief Business Officer</officerTitle>
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    <footnotes>
        <footnote id="F1">The stock option vested as to 25% of the underlying shares on August 9, 2022, and vests as to the remaining underlying shares in 36 substantially equal monthly installments thereafter.</footnote>
        <footnote id="F2">On August 19, 2024, the Issuer repriced the option. Except as described further in footnote 7, all other terms of the option remain unchanged.</footnote>
        <footnote id="F3">The stock option vests in 48 substantially equal monthly installments beginning on January 6, 2022.</footnote>
        <footnote id="F4">The stock option vests in 48 substantially equal monthly installments beginning on July 13, 2023.</footnote>
        <footnote id="F5">The stock option vests in 48 substantially equal monthly installments beginning on March 15, 2024.</footnote>
        <footnote id="F6">The stock option vests in 48 substantially equal monthly installments beginning on April 27, 2024.</footnote>
        <footnote id="F7">The exercise price of the option is $3.56 per share, representing the fair market value per share of the common stock on the date of the repricing; provided that the exercise price will be increased to the original exercise price before repricing if, prior to the &quot;premium end date&quot; (as defined below), the repriced option is exercised or the reporting person's employment is terminated for any reason other than a &quot;qualifying termination&quot; (as defined below). The &quot;premium end date&quot; means the earliest of: (i) August 19, 2026, (ii) the date immediately prior to the closing of a change in control, or (iii) the date of the employee's qualifying termination. A &quot;qualifying termination&quot; means (a) the involuntary termination of the employee's employment by the Company due to a reduction in force (and other than for cause), or (b) the employee's termination due to death or disability.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Jessica Oien, Attorney-in-Fact for Neil Abdollahian</signatureName>
        <signatureDate>2024-08-20</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</SEC-DOCUMENT>
