<SEC-DOCUMENT>0001786205-25-000012.txt : 20250107
<SEC-HEADER>0001786205-25-000012.hdr.sgml : 20250107
<ACCEPTANCE-DATETIME>20250107213959
ACCESSION NUMBER:		0001786205-25-000012
CONFORMED SUBMISSION TYPE:	144
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20250107
DATE AS OF CHANGE:		20250107

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Arcellx, Inc.
		CENTRAL INDEX KEY:			0001786205
		STANDARD INDUSTRIAL CLASSIFICATION:	BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
		ORGANIZATION NAME:           	03 Life Sciences
		IRS NUMBER:				472855917
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		144
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	001-41259
		FILM NUMBER:		25516397

	BUSINESS ADDRESS:	
		STREET 1:		800 BRIDGE PARKWAY
		CITY:			REDWOOD CITY
		STATE:			CA
		ZIP:			94065
		BUSINESS PHONE:		240-327-0603

	MAIL ADDRESS:	
		STREET 1:		800 BRIDGE PARKWAY
		CITY:			REDWOOD CITY
		STATE:			CA
		ZIP:			94065

REPORTING-OWNER:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Heery Christopher
		CENTRAL INDEX KEY:			0001789632
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		144

	MAIL ADDRESS:	
		STREET 1:		C/O PRECISION BIOSCIENCES, INC.
		STREET 2:		302 E. PETTIGREW STREET, SUITE A-100
		CITY:			DURHAM
		STATE:			NC
		ZIP:			27701
</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>0001789632</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <issuerInfo>
      <issuerCik>0001786205</issuerCik>
      <issuerName>Arcellx, Inc.</issuerName>
      <secFileNumber>001-41259</secFileNumber>
      <issuerAddress>
        <com:street1>800 BRIDGE PARKWAY</com:street1>
        <com:city>REDWOOD CITY</com:city>
        <com:stateOrCountry>CA</com:stateOrCountry>
        <com:zipCode>94065</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>240-327-0603</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Heery Christopher</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Officer</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Common Stock</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>E-TRADE FINANCIAL CORPORATION</name>
        <address>
          <com:street1>3 EDISON DRIV</com:street1>
          <com:city>ALPHARETTA</com:city>
          <com:stateOrCountry>GA</com:stateOrCountry>
          <com:zipCode>30005</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>8100</noOfUnitsSold>
      <aggregateMarketValue>611779.23</aggregateMarketValue>
      <noOfUnitsOutstanding>54280820</noOfUnitsOutstanding>
      <approxSaleDate>01/07/2025</approxSaleDate>
      <securitiesExchangeName>NASDAQ</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common Stock</securitiesClassTitle>
      <acquiredDate>01/03/2025</acquiredDate>
      <natureOfAcquisitionTransaction>Restricted Stock Units</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>16519</amountOfSecuritiesAcquired>
      <paymentDate>01/03/2025</paymentDate>
      <natureOfPayment>N/A</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Christopher Heery</name>
        <address>
          <com:street1>800 Bridge Parkway</com:street1>
          <com:city>Redwood City</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94065</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common Stock</securitiesClassTitle>
      <saleDate>01/03/2025</saleDate>
      <amountOfSecuritiesSold>2975</amountOfSecuritiesSold>
      <grossProceeds>236655.59</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Christopher Heery</name>
        <address>
          <com:street1>800 Bridge Parkway</com:street1>
          <com:city>Redwood City</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94065</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common Stock</securitiesClassTitle>
      <saleDate>01/06/2025</saleDate>
      <amountOfSecuritiesSold>2975</amountOfSecuritiesSold>
      <grossProceeds>229571.23</grossProceeds>
    </securitiesSoldInPast3Months>
    <remarks>SHARES TO BE SOLD TO COVER WITHHOLDING TAXES UPON VESTING OF RESTRICTED STOCK UNIT AWARDS</remarks>
    <noticeSignature>
      <noticeDate>01/07/2025</noticeDate>
      <signature>/s/ Michelle Gilson, as Attorney-in-Fact</signature>
    </noticeSignature>
  </formData>
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</DOCUMENT>
</SEC-DOCUMENT>
