<SEC-DOCUMENT>0001959173-25-007863.txt : 20251219
<SEC-HEADER>0001959173-25-007863.hdr.sgml : 20251219
<ACCEPTANCE-DATETIME>20251219161928
ACCESSION NUMBER:		0001959173-25-007863
CONFORMED SUBMISSION TYPE:	144
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20251219
DATE AS OF CHANGE:		20251219

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Xencor Inc
		CENTRAL INDEX KEY:			0001326732
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		ORGANIZATION NAME:           	03 Life Sciences
		EIN:				201622502
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		144
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	001-36182
		FILM NUMBER:		251587808

	BUSINESS ADDRESS:	
		STREET 1:		465 N. HALSTEAD ST.
		STREET 2:		SUITE 200
		CITY:			PASADENA
		STATE:			CA
		ZIP:			91107
		BUSINESS PHONE:		626-305-5900

	MAIL ADDRESS:	
		STREET 1:		465 N. HALSTEAD ST.
		STREET 2:		SUITE 200
		CITY:			PASADENA
		STATE:			CA
		ZIP:			91107

REPORTING-OWNER:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Desjarlais John R
		CENTRAL INDEX KEY:			0001591313
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		144

	MAIL ADDRESS:	
		STREET 1:		C/O XENCOR, INC.
		STREET 2:		111 WEST LEMON AVENUE
		CITY:			MONROVIA
		STATE:			CA
		ZIP:			91016
</SEC-HEADER>
<DOCUMENT>
<TYPE>144
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:com="http://www.sec.gov/edgar/common">
  <headerData>
    <submissionType>144</submissionType>
    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0001591313</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <issuerInfo>
      <issuerCik>0001326732</issuerCik>
      <issuerName>Xencor Inc</issuerName>
      <secFileNumber>001-36182</secFileNumber>
      <issuerAddress>
        <com:street1>465 N. HALSTEAD ST.</com:street1>
        <com:street2>SUITE 200</com:street2>
        <com:city>PASADENA</com:city>
        <com:stateOrCountry>CA</com:stateOrCountry>
        <com:zipCode>91107</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>626-305-5900</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Desjarlais John R</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Officer</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Fidelity Brokerage Services LLC</name>
        <address>
          <com:street1>900 Salem Street</com:street1>
          <com:city>Smithfield</com:city>
          <com:stateOrCountry>RI</com:stateOrCountry>
          <com:zipCode>02917</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>73367</noOfUnitsSold>
      <aggregateMarketValue>1153516.60</aggregateMarketValue>
      <noOfUnitsOutstanding>71410469</noOfUnitsOutstanding>
      <approxSaleDate>12/19/2025</approxSaleDate>
      <securitiesExchangeName>NASDAQ</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>12/19/2025</acquiredDate>
      <natureOfAcquisitionTransaction>Option Granted - 01/26/2016</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>73367</amountOfSecuritiesAcquired>
      <paymentDate>12/19/2025</paymentDate>
      <natureOfPayment>Cash</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <noticeSignature>
      <noticeDate>12/19/2025</noticeDate>
      <signature>/s/ Jennifer Ruchti, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for John Desjarlais</signature>
    </noticeSignature>
  </formData>
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</SEC-DOCUMENT>
