<SEC-DOCUMENT>0000950170-25-087347.txt : 20250617
<SEC-HEADER>0000950170-25-087347.hdr.sgml : 20250617
<ACCEPTANCE-DATETIME>20250617160507
ACCESSION NUMBER:		0000950170-25-087347
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20250613
FILED AS OF DATE:		20250617
DATE AS OF CHANGE:		20250617

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Narayan Gayatri
		CENTRAL INDEX KEY:			0002072531
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-40620
		FILM NUMBER:		251053301

	MAIL ADDRESS:	
		STREET 1:		6031 CONNECTION DRIVE STE 400
		CITY:			IRVING
		STATE:			TX
		ZIP:			75039

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Builders FirstSource, Inc.
		CENTRAL INDEX KEY:			0001316835
		STANDARD INDUSTRIAL CLASSIFICATION:	RETAIL-LUMBER & OTHER BUILDING MATERIALS DEALERS [5211]
		ORGANIZATION NAME:           	07 Trade & Services
		EIN:				522084569
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		6031 CONNECTION DR., STE. 400
		CITY:			IRVING
		STATE:			TX
		ZIP:			75039
		BUSINESS PHONE:		(214) 880-3500

	MAIL ADDRESS:	
		STREET 1:		6031 CONNECTION DR., STE. 400
		CITY:			IRVING
		STATE:			TX
		ZIP:			75039
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>ownership.xml
<DESCRIPTION>4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2025-06-13</periodOfReport>

    <issuer>
        <issuerCik>0001316835</issuerCik>
        <issuerName>Builders FirstSource, Inc.</issuerName>
        <issuerTradingSymbol>BLDR</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0002072531</rptOwnerCik>
            <rptOwnerName>Narayan Gayatri</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O BUILDERS FIRSTSOURCE, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>6031 CONNECTION DR., STE. 400</rptOwnerStreet2>
            <rptOwnerCity>IRVING</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>75039</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>false</isDirector>
            <isOfficer>true</isOfficer>
            <isTenPercentOwner>false</isTenPercentOwner>
            <isOther>false</isOther>
            <officerTitle>President - Tech &amp; Digital</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>false</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, par value $0.01 per share</value>
            </securityTitle>
            <transactionDate>
                <value>2025-06-13</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>false</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>21729</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>21729</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Reflects the acquisition of restricted stock units (&quot;RSUs&quot;) pursuant to the Corporation's 2014 Incentive Plan. 40% of the RSUs vest on the first anniversary of the grant, 40% of the RSUs vest on the second anniversary of the grant, and 20% of the RSUs vest on the third anniversary of the grant and entitle the reporting person to one share of common stock for each restricted stock unit that vests.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Minator Azemi, by power of attorney</signatureName>
        <signatureDate>2025-06-17</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
