<SEC-DOCUMENT>0001209191-13-054765.txt : 20131202
<SEC-HEADER>0001209191-13-054765.hdr.sgml : 20131202
<ACCEPTANCE-DATETIME>20131202184414
ACCESSION NUMBER:		0001209191-13-054765
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20131202
FILED AS OF DATE:		20131202
DATE AS OF CHANGE:		20131202

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Xencor Inc
		CENTRAL INDEX KEY:			0001326732
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				201622502
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		111 WEST LEMON AVE
		CITY:			MONROVIA
		STATE:			CA
		ZIP:			91016
		BUSINESS PHONE:		626-305-5900

	MAIL ADDRESS:	
		STREET 1:		111 WEST LEMON AVE
		CITY:			MONROVIA
		STATE:			CA
		ZIP:			91016

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			WERNER HAROLD R
		CENTRAL INDEX KEY:			0001013603

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-36182
		FILM NUMBER:		131252836

	MAIL ADDRESS:	
		STREET 1:		C/O HEALTHCARE VENTURES LLC
		STREET 2:		44 NASSAU STREET
		CITY:			PRINCETON
		STATE:			NJ
		ZIP:			08542
</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>2013-12-02</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001326732</issuerCik>
        <issuerName>Xencor Inc</issuerName>
        <issuerTradingSymbol>XNCR</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001013603</rptOwnerCik>
            <rptOwnerName>WERNER HAROLD R</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O HEALTHCARE VENTURES VIII, L.P.</rptOwnerStreet1>
            <rptOwnerStreet2>47 THORNDIKE STREET, SUITE B1-1</rptOwnerStreet2>
            <rptOwnerCity>CAMBRIDGE</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02141</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Series A 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>1035407</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Partnership</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Upon the effectiveness of the registration statement for the issuer's initial public offering, every 3.1 shares of Series A-1 Preferred Stock owned by HealthCare Ventures VIII, L.P. (&quot;HCVVIII&quot;) will automatically convert into 1 share of the issuer's common stock.</footnote>
        <footnote id="F2">These securities are held of record by HCVVIII. HealthCare Partners VIII, L.P. (&quot;HCPVIII&quot;) is the General Partner of HCVVIII and HealthCare Partners VIII LLC (the &quot;LLC&quot;) is the General Partner of HCPVIII. Mr. Werner is a managing director of the LLC and, as such, may be deemed to exercise shared voting and investment power with respect to the shares owned by HCVVIII. Mr. Werner disclaims beneficial ownership of the securities owned by HCVVIII except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that he is the beneficial owner of these securities for purposes of Section 16 or for any other purpose.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/Jeffrey B. Steinberg, Attorney-in-Fact for Harold Werner</signatureName>
        <signatureDate>2013-12-02</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24.3_496389
<SEQUENCE>2
<FILENAME>poa.txt
<DESCRIPTION>POA DOCUMENT
<TEXT>
POWER OF ATTORNEY

	KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below
hereby constitutes and appoints Jeffrey B. Steinberg his true and lawful
attorney-in-fact, with full power of substitution, to sign any and all
instruments, certificates and documents that may be necessary, desirable or
appropriate to be executed on behalf of himself as an individual or in his
capacity as a general partner of any partnership, or as a managing directors of
any limited liability company, pursuant to sections 13 and 16 of the Securities
Exchange Act of 1934, as amended (the "Exchange Act"), and any and all
regulations promulgated thereunder, and Rules 144, 144A and 145 under the
Securities Act of 1933, as amended (the "Securities Act"), and to file the same,
with all exhibits thereto, and any other documents in connection therewith, with
the Securities and Exchange Commission, and with any other entity when and if
such is mandated by the Exchange Act, by the Securities Act or by the By-laws of
the National Association of Securities Dealers, Inc., or by the by-laws, rules
or regulations of the Financial Industry Regulatory Authority, granting unto
said attorney-in-fact full power and authority to do and perform each and every
act and thing necessary, desirable or appropriate, fully to all intents and
purposes as he might or could do in person, thereby ratifying and confirming all
that said attorney-in-fact, or his substitutes may lawfully do or cause to be
done by virtue hereof.

This Power of Attorney shall be valid for five (5) years from the date set forth
below.

IN WITNESS WHEREOF, this Power of Attorney has been signed as of the 4th day of
November, 2013.

/s/Harold Werner
Harold Werner

</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
