<SEC-DOCUMENT>0000950170-25-100490.txt : 20250730
<SEC-HEADER>0000950170-25-100490.hdr.sgml : 20250730
<ACCEPTANCE-DATETIME>20250730201031
ACCESSION NUMBER:		0000950170-25-100490
CONFORMED SUBMISSION TYPE:	4/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20250620
FILED AS OF DATE:		20250730
DATE AS OF CHANGE:		20250730

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Cox Troy
		CENTRAL INDEX KEY:			0001696923
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34180
		FILM NUMBER:		251168859

	MAIL ADDRESS:	
		STREET 1:		C/O FOUNDATION MEDICINE, INC.
		STREET 2:		C/O FOUNDATION MEDICINE, INC., 150 SECON
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02141

	FORMER NAME:	
		FORMER CONFORMED NAME:	Cox Troy Cogswell
		DATE OF NAME CHANGE:	20170201

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			STANDARD BIOTOOLS INC.
		CENTRAL INDEX KEY:			0001162194
		STANDARD INDUSTRIAL CLASSIFICATION:	LABORATORY ANALYTICAL INSTRUMENTS [3826]
		ORGANIZATION NAME:           	08 Industrial Applications and Services
		EIN:				770513190
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		2 TOWER PLACE
		STREET 2:		SUITE 2000
		CITY:			SOUTH SAN FRANCISCO
		STATE:			CA
		ZIP:			94080
		BUSINESS PHONE:		6502666000

	MAIL ADDRESS:	
		STREET 1:		2 TOWER PLACE
		STREET 2:		SUITE 2000
		CITY:			SOUTH SAN FRANCISCO
		STATE:			CA
		ZIP:			94080

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	FLUIDIGM CORP
		DATE OF NAME CHANGE:	20011113
</SEC-HEADER>
<DOCUMENT>
<TYPE>4/A
<SEQUENCE>1
<FILENAME>ownership.xml
<DESCRIPTION>4/A
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0508</schemaVersion>

    <documentType>4/A</documentType>

    <periodOfReport>2025-06-20</periodOfReport>

    <dateOfOriginalSubmission>2025-06-24</dateOfOriginalSubmission>

    <issuer>
        <issuerCik>0001162194</issuerCik>
        <issuerName>STANDARD BIOTOOLS INC.</issuerName>
        <issuerTradingSymbol>LAB</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001696923</rptOwnerCik>
            <rptOwnerName>Cox Troy</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O STANDARD BIOTOOLS INC.</rptOwnerStreet1>
            <rptOwnerStreet2>2 TOWER PLACE, STE 2000</rptOwnerStreet2>
            <rptOwnerCity>SOUTH SAN FRANCISCO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94080</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>true</isDirector>
            <isOfficer>false</isOfficer>
            <isTenPercentOwner>false</isTenPercentOwner>
            <isOther>false</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>false</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>319322</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <remarks>This Form 4/A is being filed solely to correct the number of securities beneficially owned by the Reporting Person as of June 20, 2025 that was reported in Column 5 in Table I of the Form 4 filed June 24, 2025 (the &quot;Original Form 4&quot;). All other information reported in the Original Form 4 remains the same.</remarks>

    <ownerSignature>
        <signatureName>/s/ Troy Cox by Tomone Tanaka, Attorney-in-Fact</signatureName>
        <signatureDate>2025-07-30</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
