<SEC-DOCUMENT>0001901405-25-000002.txt : 20250916
<SEC-HEADER>0001901405-25-000002.hdr.sgml : 20250916
<ACCEPTANCE-DATETIME>20250916201349
ACCESSION NUMBER:		0001901405-25-000002
CONFORMED SUBMISSION TYPE:	144
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20250916
DATE AS OF CHANGE:		20250916

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			WESTPORT FUEL SYSTEMS INC.
		CENTRAL INDEX KEY:			0001370416
		STANDARD INDUSTRIAL CLASSIFICATION:	ENGINES & TURBINES [3510]
		ORGANIZATION NAME:           	06 Technology
		EIN:				000000000

	FILING VALUES:
		FORM TYPE:		144
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	001-34152
		FILM NUMBER:		251318538

	BUSINESS ADDRESS:	
		STREET 1:		1691 WEST 75TH AVENUE
		CITY:			VANCOUVER
		STATE:			A1
		ZIP:			V6P6G2
		BUSINESS PHONE:		6047182000

	MAIL ADDRESS:	
		STREET 1:		1691 WEST 75TH AVENUE
		CITY:			VANCOUVER
		STATE:			A1
		ZIP:			V6P6G2

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	WESTPORT INNOVATIONS INC
		DATE OF NAME CHANGE:	20060726

REPORTING-OWNER:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Larkin William E
		CENTRAL INDEX KEY:			0001901405
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		144

	MAIL ADDRESS:	
		STREET 1:		8300 W. SUNRISE BOULEVARD
		CITY:			PLANTATION
		STATE:			FL
		ZIP:			33322
</SEC-HEADER>
<DOCUMENT>
<TYPE>144
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
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  <headerData>
    <submissionType>144</submissionType>
    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0001901405</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>


    </filerInfo>
  </headerData>
  <formData>
    <issuerInfo>
      <issuerCik>0001370416</issuerCik>
      <issuerName>WESTPORT FUEL SYSTEMS INC.</issuerName>
      <secFileNumber>001-34152</secFileNumber>
      <issuerAddress>
        <com:street1>1691 WEST 75TH AVENUE</com:street1>
        <com:city>VANCOUVER</com:city>
        <com:stateOrCountry>A1</com:stateOrCountry>
        <com:zipCode>V6P6G2</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>6047182000</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Larkin William E</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Officer</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Common Shares</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Morgan Stanley</name>
        <address>
          <com:street1>600 3rd Avenue SW</com:street1>
          <com:street2>Suite 1500</com:street2>
          <com:city>Calgary</com:city>
          <com:stateOrCountry>A0</com:stateOrCountry>
          <com:zipCode>T2P0G5</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>11530</noOfUnitsSold>
      <aggregateMarketValue>27326.10</aggregateMarketValue>
      <noOfUnitsOutstanding>17351005</noOfUnitsOutstanding>
      <approxSaleDate>09/16/2025</approxSaleDate>
      <securitiesExchangeName>NASDAQ</securitiesExchangeName>
    </securitiesInformation>
    <securitiesInformation>
      <securitiesClassTitle>Common Shares</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Merrill EDGE</name>
        <address>
          <com:street1>PO Box 40486</com:street1>
          <com:city>Jacksonville</com:city>
          <com:stateOrCountry>FL</com:stateOrCountry>
          <com:zipCode>32203</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>23640</noOfUnitsSold>
      <aggregateMarketValue>56026.80</aggregateMarketValue>
      <noOfUnitsOutstanding>17351005</noOfUnitsOutstanding>
      <approxSaleDate>09/16/2025</approxSaleDate>
      <securitiesExchangeName>NASDAQ</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common Shares</securitiesClassTitle>
      <acquiredDate>03/27/2023</acquiredDate>
      <natureOfAcquisitionTransaction>Purchase</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Open Market Purchase</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>2850</amountOfSecuritiesAcquired>
      <paymentDate>03/27/2023</paymentDate>
      <natureOfPayment>Cash</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common Shares</securitiesClassTitle>
      <acquiredDate>01/08/2024</acquiredDate>
      <natureOfAcquisitionTransaction>Vesting of Restricted Stock Units</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>3334</amountOfSecuritiesAcquired>
      <paymentDate>01/08/2024</paymentDate>
      <natureOfPayment>Employee compensation</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common Shares</securitiesClassTitle>
      <acquiredDate>04/02/2024</acquiredDate>
      <natureOfAcquisitionTransaction>Vesting of Restricted Stock Units</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>10563</amountOfSecuritiesAcquired>
      <paymentDate>04/02/2024</paymentDate>
      <natureOfPayment>Employee compensation</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common Shares</securitiesClassTitle>
      <acquiredDate>06/10/2024</acquiredDate>
      <natureOfAcquisitionTransaction>Vesting of Restricted Stock Units</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>10563</amountOfSecuritiesAcquired>
      <paymentDate>06/10/2024</paymentDate>
      <natureOfPayment>Employee compensation</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common Shares</securitiesClassTitle>
      <acquiredDate>12/17/2024</acquiredDate>
      <natureOfAcquisitionTransaction>Vesting of Restricted Stock Units</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>4098</amountOfSecuritiesAcquired>
      <paymentDate>12/17/2024</paymentDate>
      <natureOfPayment>Employee compensation</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common Shares </securitiesClassTitle>
      <acquiredDate>01/09/2025</acquiredDate>
      <natureOfAcquisitionTransaction>Vesting of Restricted Stock Units</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>3333</amountOfSecuritiesAcquired>
      <paymentDate>01/09/2025</paymentDate>
      <natureOfPayment>Employee compensation</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common Shares</securitiesClassTitle>
      <acquiredDate>09/15/2025</acquiredDate>
      <natureOfAcquisitionTransaction>Vesting of Restricted Stock Units</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>11530</amountOfSecuritiesAcquired>
      <paymentDate>09/15/2025</paymentDate>
      <natureOfPayment>Employee compensation</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <noticeSignature>
      <noticeDate>09/16/2025</noticeDate>
      <signature>/s/ William E. Larkin</signature>
    </noticeSignature>
  </formData>
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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
