<SEC-DOCUMENT>0001000275-26-000032.txt : 20260317
<SEC-HEADER>0001000275-26-000032.hdr.sgml : 20260317
<ACCEPTANCE-DATETIME>20260317163116
ACCESSION NUMBER:		0001000275-26-000032
CONFORMED SUBMISSION TYPE:	144
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20260317
DATE AS OF CHANGE:		20260317

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MP Materials Corp. / DE
		CENTRAL INDEX KEY:			0001801368
		STANDARD INDUSTRIAL CLASSIFICATION:	METAL MINING [1000]
		ORGANIZATION NAME:           	01 Energy & Transportation
		EIN:				844465489
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		144
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	001-39277
		FILM NUMBER:		26762539

	BUSINESS ADDRESS:	
		STREET 1:		1700 S. PAVILION CENTER DR.
		STREET 2:		SUITE 800
		CITY:			LAS VEGAS
		STATE:			NV
		ZIP:			89135
		BUSINESS PHONE:		(702) 844-6111

	MAIL ADDRESS:	
		STREET 1:		1700 S. PAVILION CENTER DR.
		STREET 2:		SUITE 800
		CITY:			LAS VEGAS
		STATE:			NV
		ZIP:			89135

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Fortress Value Acquisition Corp.
		DATE OF NAME CHANGE:	20200128

REPORTING-OWNER:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Corbett Ryan
		CENTRAL INDEX KEY:			0001831686
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		144

	MAIL ADDRESS:	
		STREET 1:		1700 S. PAVILION CENTER DR.
		STREET 2:		SUITE 800
		CITY:			LAS VEGAS
		STATE:			NV
		ZIP:			89135
</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>0001831686</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <issuerInfo>
      <issuerCik>0001801368</issuerCik>
      <issuerName>MP Materials Corp. / DE</issuerName>
      <secFileNumber>001-39277</secFileNumber>
      <issuerAddress>
        <com:street1>1700 S. PAVILION CENTER DR.</com:street1>
        <com:street2>SUITE 800</com:street2>
        <com:city>LAS VEGAS</com:city>
        <com:stateOrCountry>NV</com:stateOrCountry>
        <com:zipCode>89135</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>(702) 844-6111</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Corbett Ryan</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Officer</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>COMMON</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>RBC CAPITAL MARKETS LLC</name>
        <address>
          <com:street1>250 Nicollet Mall</com:street1>
          <com:street2>Suite 1700</com:street2>
          <com:city>Minneapolis</com:city>
          <com:stateOrCountry>MN</com:stateOrCountry>
          <com:zipCode>55401</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>46000</noOfUnitsSold>
      <aggregateMarketValue>2760055.00</aggregateMarketValue>
      <noOfUnitsOutstanding>177230483</noOfUnitsOutstanding>
      <approxSaleDate>03/17/2026</approxSaleDate>
      <securitiesExchangeName>NYSE</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>COMMON</securitiesClassTitle>
      <acquiredDate>01/01/2026</acquiredDate>
      <natureOfAcquisitionTransaction>RSU VEST</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>ISSUER</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>19272</amountOfSecuritiesAcquired>
      <paymentDate>01/01/2026</paymentDate>
      <natureOfPayment>NA</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>COMMON</securitiesClassTitle>
      <acquiredDate>01/14/2026</acquiredDate>
      <natureOfAcquisitionTransaction>RSU VEST</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>ISSUER</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>11010</amountOfSecuritiesAcquired>
      <paymentDate>01/14/2026</paymentDate>
      <natureOfPayment>NA</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>COMMON</securitiesClassTitle>
      <acquiredDate>01/13/2026</acquiredDate>
      <natureOfAcquisitionTransaction>RSU VEST</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>ISSUER</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>9521</amountOfSecuritiesAcquired>
      <paymentDate>01/13/2026</paymentDate>
      <natureOfPayment>NA</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>COMMON</securitiesClassTitle>
      <acquiredDate>01/12/2026</acquiredDate>
      <natureOfAcquisitionTransaction>RSU VEST</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>ISSUER</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>6197</amountOfSecuritiesAcquired>
      <paymentDate>01/12/2026</paymentDate>
      <natureOfPayment>NA</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <remarks>SOLD PURSUANT TO A RULE 10B5-1 PLAN ESTABLISHED 12/16/2025</remarks>
    <noticeSignature>
      <noticeDate>03/17/2026</noticeDate>
      <planAdoptionDates>
        <planAdoptionDate>12/16/2025</planAdoptionDate>
      </planAdoptionDates>
      <signature>POA JEFFREY J. KAPALA</signature>
    </noticeSignature>
  </formData>
</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
