<SEC-DOCUMENT>0001193125-19-250698-index.html : 20190920
<SEC-HEADER>0001193125-19-250698.hdr.sgml : 20190920
<ACCEPTANCE-DATETIME>20190920161324
ACCESSION NUMBER:		0001193125-19-250698
CONFORMED SUBMISSION TYPE:	424B4
PUBLIC DOCUMENT COUNT:		5
FILED AS OF DATE:		20190920
DATE AS OF CHANGE:		20190920

FILER:

	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

	FILING VALUES:
		FORM TYPE:		424B4
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-233446
		FILM NUMBER:		191104821

	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>
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<TYPE>424B4
<SEQUENCE>1
<FILENAME>d692844d424b4.htm
<DESCRIPTION>424B4
<TEXT>
Document 1 - file: d692844d424b4.htm

</DOCUMENT>
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<SEQUENCE>2
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<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: g692844g12z65.jpg

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<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>g692844g50a84.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: g692844g50a84.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>g692844g70h03.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: g692844g70h03.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>g692844g91e59.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: g692844g91e59.jpg

</DOCUMENT>
</SEC-DOCUMENT>