<SEC-DOCUMENT>0000899243-19-023889.txt : 20190918
<SEC-HEADER>0000899243-19-023889.hdr.sgml : 20190918
<ACCEPTANCE-DATETIME>20190918214413
ACCESSION NUMBER:		0000899243-19-023889
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20190918
FILED AS OF DATE:		20190918
DATE AS OF CHANGE:		20190918

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			H.I.G. Bio-Exagen, L.P.
		CENTRAL INDEX KEY:			0001788396
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39049
		FILM NUMBER:		191100905

	BUSINESS ADDRESS:	
		STREET 1:		C/O EXAGEN INC.
		STREET 2:		1261 LIBERTY WAY, SUITE C
		CITY:			VISTA
		STATE:			CA
		ZIP:			92081
		BUSINESS PHONE:		(760) 560-1501

	MAIL ADDRESS:	
		STREET 1:		C/O EXAGEN INC.
		STREET 2:		1261 LIBERTY WAY, SUITE C
		CITY:			VISTA
		STATE:			CA
		ZIP:			92081

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			H.I.G.-GPII, Inc.
		CENTRAL INDEX KEY:			0001788482
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39049
		FILM NUMBER:		191100906

	BUSINESS ADDRESS:	
		STREET 1:		C/O EXAGEN INC.
		STREET 2:		1261 LIBERTY WAY, SUITE C
		CITY:			VISTA
		STATE:			CA
		ZIP:			92081
		BUSINESS PHONE:		(760) 560-1501

	MAIL ADDRESS:	
		STREET 1:		C/O EXAGEN INC.
		STREET 2:		1261 LIBERTY WAY, SUITE C
		CITY:			VISTA
		STATE:			CA
		ZIP:			92081

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			TAMER ANTHONY
		CENTRAL INDEX KEY:			0001050045

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39049
		FILM NUMBER:		191100907

	MAIL ADDRESS:	
		STREET 1:		1001 SOUTH BAYSHORE DRIVE
		STREET 2:		STE 2708
		CITY:			MIAMI
		STATE:			FL
		ZIP:			33131

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MNAYMNEH SAMI
		CENTRAL INDEX KEY:			0001050046

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39049
		FILM NUMBER:		191100908

	MAIL ADDRESS:	
		STREET 1:		1001 SOUTH BAYSHORE DRIVE
		STREET 2:		STE 2708
		CITY:			MIAMI
		STATE:			FL
		ZIP:			33131

ISSUER:		

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

	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

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	EXAGEN DIAGNOSTICS INC
		DATE OF NAME CHANGE:	20031230
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>doc3.xml
<DESCRIPTION>FORM 3 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2019-09-18</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001274737</issuerCik>
        <issuerName>EXAGEN INC.</issuerName>
        <issuerTradingSymbol>XGN</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001788396</rptOwnerCik>
            <rptOwnerName>H.I.G. Bio-Exagen, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1450 BRICKELL AVENUE, 31ST FLOOR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MIAMI</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>33131</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001788482</rptOwnerCik>
            <rptOwnerName>H.I.G.-GPII, Inc.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1450 BRICKELL AVENUE, 31ST FLOOR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MIAMI</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>33131</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001050045</rptOwnerCik>
            <rptOwnerName>TAMER ANTHONY</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1450 BRICKELL AVENUE, 31ST FLOOR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MIAMI</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>33131</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001050046</rptOwnerCik>
            <rptOwnerName>MNAYMNEH SAMI</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1450 BRICKELL AVENUE, 31ST FLOOR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MIAMI</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>33131</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Series H Redeemable Convertible Preferred Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F1"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>1271252</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The Series H Redeemable Convertible Preferred Stock (&quot;Series H&quot;) is convertible into the Issuer's Common Stock on a 183.635-for-one basis at the holder's election and has no expiration date. The Series H will automatically convert into Common Stock upon the closing of the Issuer's initial public offering.</footnote>
        <footnote id="F2">The shares reported on this form are held of record by H.I.G. Bio-Exagen, L.P. (&quot;H.I.G.&quot;). H.I.G.-GPII, Inc. (&quot;H.I.G. GP&quot;) is the general partner of H.I.G. and has sole voting and investment control over the shares owned by H.I.G. Anthony Tamer and Sami Mnaymneh are the sole shareholders of H.I.G. GP and may be deemed to share beneficial ownership of the shares held by H.I.G. Bio-Exagen, L.P. Each of Mr. Tamer and Mr. Mnaymneh disclaims beneficial ownership of the shares reported herein except to the extent of their pecuniary interest, if any.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>H.I.G. Bio-Exagen, L.P., By: H.I.G.-GPII, Inc., its general partner, By: /s/ Richard Siegel, Name: Richard Siegel, Title: Authorized Signatory</signatureName>
        <signatureDate>2019-09-18</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>H.I.G.-GPII, Inc., By: /s/ Richard Siegel, Name: Richard Siegel, Title: Authorized Signatory</signatureName>
        <signatureDate>2019-09-18</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Anthony Tamer</signatureName>
        <signatureDate>2019-09-18</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Sami Mnaymneh</signatureName>
        <signatureDate>2019-09-18</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
