<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:com="http://www.sec.gov/edgar/common">
  <!-- Generated by Workiva -->
  <headerData>
    <submissionType>144</submissionType>
    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0001257647</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <issuerInfo>
      <issuerCik>0001051627</issuerCik>
      <issuerName>AXT, INC.</issuerName>
      <secFileNumber>000-24085</secFileNumber>
      <issuerAddress>
        <com:street1>4281 Technology Drive</com:street1>
        <com:city>Fremont</com:city>
        <com:stateOrCountry>CA</com:stateOrCountry>
        <com:zipCode>94538</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>510-385-6205</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Gary Fischer</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Officer</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Merrill Lynch</name>
        <address>
          <com:street1>4900 Hopyard Road Ste. 140</com:street1>
          <com:city>Pleasanton</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94588</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>101297</noOfUnitsSold>
      <aggregateMarketValue>1106163.24</aggregateMarketValue>
      <noOfUnitsOutstanding>46124935</noOfUnitsOutstanding>
      <approxSaleDate>11/12/2025</approxSaleDate>
      <securitiesExchangeName>NYSE</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>02/25/2020</acquiredDate>
      <natureOfAcquisitionTransaction>Restricted Stock Award</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>AXT, INC.</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>94885</amountOfSecuritiesAcquired>
      <paymentDate>02/25/2020</paymentDate>
      <natureOfPayment>Restricted Stock Award</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>11/05/2023</acquiredDate>
      <natureOfAcquisitionTransaction>Restricted Stock Award</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>AXT, INC.</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>6412</amountOfSecuritiesAcquired>
      <paymentDate>11/05/2023</paymentDate>
      <natureOfPayment>Restricted Stock Award</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Gary Fischer</name>
        <address>
          <com:street1>4281 Technology Drive</com:street1>
          <com:city>Fremont</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94538</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>11/04/2025</saleDate>
      <amountOfSecuritiesSold>27720</amountOfSecuritiesSold>
      <grossProceeds>224182.17</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Gary Fischer</name>
        <address>
          <com:street1>4281 Technology Drive</com:street1>
          <com:city>Fremont</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94538</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>11/05/2025</saleDate>
      <amountOfSecuritiesSold>52515</amountOfSecuritiesSold>
      <grossProceeds>483602.23</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Gary Fischer</name>
        <address>
          <com:street1>4281 Technology Drive</com:street1>
          <com:city>Fremont</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94538</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>11/06/2025</saleDate>
      <amountOfSecuritiesSold>22675</amountOfSecuritiesSold>
      <grossProceeds>201176</grossProceeds>
    </securitiesSoldInPast3Months>
    <noticeSignature>
      <noticeDate>11/12/2025</noticeDate>
      <signature>Gary Fischer</signature>
    </noticeSignature>
  </formData>
</edgarSubmission>
