<SEC-DOCUMENT>0001140361-15-038122.txt : 20151021
<SEC-HEADER>0001140361-15-038122.hdr.sgml : 20151021
<ACCEPTANCE-DATETIME>20151021102353
ACCESSION NUMBER:		0001140361-15-038122
CONFORMED SUBMISSION TYPE:	D
PUBLIC DOCUMENT COUNT:		1
ITEM INFORMATION:		<ITEMS>06b
FILED AS OF DATE:		20151021
DATE AS OF CHANGE:		20151021
EFFECTIVENESS DATE:		20151021

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			EXAGEN DIAGNOSTICS INC
		CENTRAL INDEX KEY:			0001274737
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-MEDICAL LABORATORIES [8071]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE

	FILING VALUES:
		FORM TYPE:		D
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	021-249805
		FILM NUMBER:		151167564

	BUSINESS ADDRESS:	
		STREET 1:		1261 LIBERTY WAY
		CITY:			VISTA
		STATE:			CA
		ZIP:			92081
		BUSINESS PHONE:		(760) 560-1501

	MAIL ADDRESS:	
		STREET 1:		1261 LIBERTY WAY
		CITY:			VISTA
		STATE:			CA
		ZIP:			92081
</SEC-HEADER>
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        <entityName>EXAGEN DIAGNOSTICS INC</entityName>
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            <street1>1261 LIBERTY WAY</street1>
            <city>VISTA</city>
            <stateOrCountry>CA</stateOrCountry>
            <stateOrCountryDescription>CALIFORNIA</stateOrCountryDescription>
            <zipCode>92081</zipCode>
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            <relatedPersonName>
                <firstName>Fortunato</firstName>
                <middleName>R.</middleName>
                <lastName>Rocca</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>1261 Liberty Way</street1>
                <city>Vista</city>
                <stateOrCountry>CA</stateOrCountry>
                <stateOrCountryDescription>CALIFORNIA</stateOrCountryDescription>
                <zipCode>92081</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Ebetuel</firstName>
                <lastName>Pallares</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>1261 Liberty Way</street1>
                <city>Vista</city>
                <stateOrCountry>CA</stateOrCountry>
                <stateOrCountryDescription>CALIFORNIA</stateOrCountryDescription>
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            <relatedPersonRelationshipList>
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        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Wendy</firstName>
                <lastName>Swedick</lastName>
            </relatedPersonName>
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                <stateOrCountry>CA</stateOrCountry>
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                <middleName>L.L.</middleName>
                <lastName>Tullis</lastName>
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        <relatedPersonInfo>
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                <firstName>Thierry</firstName>
                <lastName>Dervieux</lastName>
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                <lastName>Weinstein</lastName>
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    <offeringData>
        <industryGroup>
            <industryGroupType>Biotechnology</industryGroupType>
        </industryGroup>
        <issuerSize>
            <revenueRange>Decline to Disclose</revenueRange>
        </issuerSize>
        <federalExemptionsExclusions>
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            <dateOfFirstSale>
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            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>false</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isDebtType>true</isDebtType>
            <isOptionToAcquireType>true</isOptionToAcquireType>
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        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>0</minimumInvestmentAccepted>
        <salesCompensationList></salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>4500000</totalOfferingAmount>
            <totalAmountSold>2999766</totalAmountSold>
            <totalRemaining>1500234</totalRemaining>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>4</totalNumberAlreadyInvested>
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            <signature>
                <issuerName>EXAGEN DIAGNOSTICS INC</issuerName>
                <signatureName>/s/ Wendy Swedick</signatureName>
                <nameOfSigner>Wendy Swedick</nameOfSigner>
                <signatureTitle>Chief Financial Officer</signatureTitle>
                <signatureDate>2015-10-21</signatureDate>
            </signature>
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