<?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>0001761880</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <issuerInfo>
      <issuerCik>0000908315</issuerCik>
      <issuerName>Winmark Corp.</issuerName>
      <secFileNumber>000-22012</secFileNumber>
      <issuerAddress>
        <com:street1>605 Hwy 169</com:street1>
        <com:street2>Suite 400</com:street2>
        <com:city>Minneapolis</com:city>
        <com:stateOrCountry>MN</com:stateOrCountry>
        <com:zipCode>55441</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>7635208439</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Renae Gaudette</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>COO</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Merrill</name>
        <address>
          <com:street1>315 Lake Street East</com:street1>
          <com:street2>Suite 200</com:street2>
          <com:city>Wayzata</com:city>
          <com:stateOrCountry>MN</com:stateOrCountry>
          <com:zipCode>55391</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>1200</noOfUnitsSold>
      <aggregateMarketValue>500460.11</aggregateMarketValue>
      <noOfUnitsOutstanding>3562135</noOfUnitsOutstanding>
      <approxSaleDate>10/24/2025</approxSaleDate>
      <securitiesExchangeName>NYSE</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>10/23/2025</acquiredDate>
      <natureOfAcquisitionTransaction>Restricted</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Winmark Corporation</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>2033</amountOfSecuritiesAcquired>
      <paymentDate>10/22/2025</paymentDate>
      <natureOfPayment>Comp</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <noticeSignature>
      <noticeDate>10/24/2025</noticeDate>
      <signature>Renae Gaudette</signature>
    </noticeSignature>
  </formData>
</edgarSubmission>
