<?xml version="1.0" encoding="UTF-8"?><own:edgarSubmission xmlns:com="http://www.sec.gov/edgar/common" xmlns:own="http://www.sec.gov/edgar/ownership">
  <!-- Generated by Workiva -->
  <own:headerData>
    <own:submissionType>144</own:submissionType>
    <own:filerInfo>
      <own:filer>
        <own:filerCredentials>
          <own:cik>0001114357</own:cik>
          <own:ccc>XXXXXXXX</own:ccc>
        </own:filerCredentials>
      </own:filer>
      <own:liveTestFlag>LIVE</own:liveTestFlag>



    </own:filerInfo>
  </own:headerData>
  <own:formData>
    <own:issuerInfo>
      <own:issuerCik>0001717115</own:issuerCik>
      <own:issuerName>Tempus AI, Inc.</own:issuerName>
      <own:secFileNumber>001-42130</own:secFileNumber>
      <own:issuerAddress>
        <com:street1>600 West Chicago Avenue,  Suite 510</com:street1>
        <com:city>Chicago</com:city>
        <com:stateOrCountry>IL</com:stateOrCountry>
        <com:zipCode>60654</com:zipCode>
      </own:issuerAddress>
      <own:issuerContactPhone>800-976-5448</own:issuerContactPhone>
      <own:nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Eric Lefkofsky</own:nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <own:relationshipsToIssuer>
        <own:relationshipToIssuer>Officer</own:relationshipToIssuer>
        <own:relationshipToIssuer>Director</own:relationshipToIssuer>
        <own:relationshipToIssuer>10% Stockholder</own:relationshipToIssuer>
      </own:relationshipsToIssuer>
    </own:issuerInfo>
    <own:securitiesInformation>
      <own:securitiesClassTitle>Class A Common Stock</own:securitiesClassTitle>
      <own:brokerOrMarketmakerDetails>
        <own:name>J.P. Morgan Securities LLC</own:name>
        <own:address>
          <com:street1>270 Park Avenue, 10th Floor</com:street1>
          <com:city>New York</com:city>
          <com:stateOrCountry>NY</com:stateOrCountry>
          <com:zipCode>10017</com:zipCode>
        </own:address>
      </own:brokerOrMarketmakerDetails>
      <own:noOfUnitsSold>200000</own:noOfUnitsSold>
      <own:aggregateMarketValue>13994000</own:aggregateMarketValue>
      <own:noOfUnitsOutstanding>175390967</own:noOfUnitsOutstanding>
      <own:approxSaleDate>09/17/2026</own:approxSaleDate>
      <own:securitiesExchangeName>NASDAQ</own:securitiesExchangeName>
    </own:securitiesInformation>
    <own:securitiesToBeSold>
      <own:securitiesClassTitle>Class A Common Stock</own:securitiesClassTitle>
      <own:acquiredDate>12/02/2016</own:acquiredDate>
      <own:natureOfAcquisitionTransaction>Direct Investment</own:natureOfAcquisitionTransaction>
      <own:nameOfPersonfromWhomAcquired>Issuer</own:nameOfPersonfromWhomAcquired>
      <own:isGiftTransaction>N</own:isGiftTransaction>
      <own:amountOfSecuritiesAcquired>135000</own:amountOfSecuritiesAcquired>
      <own:paymentDate>12/02/2016</own:paymentDate>
      <own:natureOfPayment>Cash</own:natureOfPayment>
    </own:securitiesToBeSold>
    <own:securitiesToBeSold>
      <own:securitiesClassTitle>Class A Common Stock</own:securitiesClassTitle>
      <own:acquiredDate>09/24/2015</own:acquiredDate>
      <own:natureOfAcquisitionTransaction>Direct Investment</own:natureOfAcquisitionTransaction>
      <own:nameOfPersonfromWhomAcquired>Issuer</own:nameOfPersonfromWhomAcquired>
      <own:isGiftTransaction>N</own:isGiftTransaction>
      <own:amountOfSecuritiesAcquired>57500</own:amountOfSecuritiesAcquired>
      <own:paymentDate>09/24/2015</own:paymentDate>
      <own:natureOfPayment>Cash</own:natureOfPayment>
    </own:securitiesToBeSold>
    <own:securitiesToBeSold>
      <own:securitiesClassTitle>Class A Common Stock</own:securitiesClassTitle>
      <own:acquiredDate>03/05/2020</own:acquiredDate>
      <own:natureOfAcquisitionTransaction>Direct Investment</own:natureOfAcquisitionTransaction>
      <own:nameOfPersonfromWhomAcquired>Issuer</own:nameOfPersonfromWhomAcquired>
      <own:isGiftTransaction>N</own:isGiftTransaction>
      <own:amountOfSecuritiesAcquired>7500</own:amountOfSecuritiesAcquired>
      <own:paymentDate>03/05/2020</own:paymentDate>
      <own:natureOfPayment>Cash</own:natureOfPayment>
    </own:securitiesToBeSold>
    <own:nothingToReportFlagOnSecuritiesSoldInPast3Months>N</own:nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <own:securitiesSoldInPast3Months>
      <own:sellerDetails>
        <own:name>Blue Media, LLC</own:name>
        <own:address>
          <com:street1>C/o Tempus AI, Inc.</com:street1>
          <com:street2>600 West Chicago Avenue, Suite 510</com:street2>
          <com:city>Chicago</com:city>
          <com:stateOrCountry>IL</com:stateOrCountry>
          <com:zipCode>60654</com:zipCode>
        </own:address>
      </own:sellerDetails>
      <own:securitiesClassTitle>Class A Common Stock</own:securitiesClassTitle>
      <own:saleDate>06/29/2026</own:saleDate>
      <own:amountOfSecuritiesSold>133000</own:amountOfSecuritiesSold>
      <own:grossProceeds>7645208.81</own:grossProceeds>
    </own:securitiesSoldInPast3Months>
    <own:securitiesSoldInPast3Months>
      <own:sellerDetails>
        <own:name>Blue Media, LLC</own:name>
        <own:address>
          <com:street1>C/o Tempus AI, Inc.</com:street1>
          <com:street2>600 West Chicago Avenue, Suite 510</com:street2>
          <com:city>Chicago</com:city>
          <com:stateOrCountry>IL</com:stateOrCountry>
          <com:zipCode>60654</com:zipCode>
        </own:address>
      </own:sellerDetails>
      <own:securitiesClassTitle>Class A Common Stock</own:securitiesClassTitle>
      <own:saleDate>07/28/2026</own:saleDate>
      <own:amountOfSecuritiesSold>135000</own:amountOfSecuritiesSold>
      <own:grossProceeds>5678417</own:grossProceeds>
    </own:securitiesSoldInPast3Months>
    <own:securitiesSoldInPast3Months>
      <own:sellerDetails>
        <own:name>Blue Media, LLC</own:name>
        <own:address>
          <com:street1>C/o Tempus AI, Inc.</com:street1>
          <com:street2>600 West Chicago Avenue, Suite 510</com:street2>
          <com:city>Chicago</com:city>
          <com:stateOrCountry>IL</com:stateOrCountry>
          <com:zipCode>60654</com:zipCode>
        </own:address>
      </own:sellerDetails>
      <own:securitiesClassTitle>Class A Common Stock</own:securitiesClassTitle>
      <own:saleDate>08/25/2026</own:saleDate>
      <own:amountOfSecuritiesSold>135000</own:amountOfSecuritiesSold>
      <own:grossProceeds>9241867</own:grossProceeds>
    </own:securitiesSoldInPast3Months>
    <own:securitiesSoldInPast3Months>
      <own:sellerDetails>
        <own:name>Gray Media, LLC</own:name>
        <own:address>
          <com:street1>C/o Tempus AI, Inc.</com:street1>
          <com:street2>600 West Chicago Avenue, Suite 510</com:street2>
          <com:city>Chicago</com:city>
          <com:stateOrCountry>IL</com:stateOrCountry>
          <com:zipCode>60654</com:zipCode>
        </own:address>
      </own:sellerDetails>
      <own:securitiesClassTitle>Class A Common Stock</own:securitiesClassTitle>
      <own:saleDate>06/29/2026</own:saleDate>
      <own:amountOfSecuritiesSold>33250</own:amountOfSecuritiesSold>
      <own:grossProceeds>1911302.2</own:grossProceeds>
    </own:securitiesSoldInPast3Months>
    <own:securitiesSoldInPast3Months>
      <own:sellerDetails>
        <own:name>Gray Media, LLC</own:name>
        <own:address>
          <com:street1>C/o Tempus AI, Inc.</com:street1>
          <com:street2>600 West Chicago Avenue, Suite 510</com:street2>
          <com:city>Chicago</com:city>
          <com:stateOrCountry>IL</com:stateOrCountry>
          <com:zipCode>60654</com:zipCode>
        </own:address>
      </own:sellerDetails>
      <own:securitiesClassTitle>Class A Common Stock</own:securitiesClassTitle>
      <own:saleDate>07/28/2026</own:saleDate>
      <own:amountOfSecuritiesSold>57500</own:amountOfSecuritiesSold>
      <own:grossProceeds>2418585</own:grossProceeds>
    </own:securitiesSoldInPast3Months>
    <own:securitiesSoldInPast3Months>
      <own:sellerDetails>
        <own:name>Gray Media, LLC</own:name>
        <own:address>
          <com:street1>C/o Tempus AI, Inc.</com:street1>
          <com:street2>600 West Chicago Avenue, Suite 510</com:street2>
          <com:city>Chicago</com:city>
          <com:stateOrCountry>IL</com:stateOrCountry>
          <com:zipCode>60654</com:zipCode>
        </own:address>
      </own:sellerDetails>
      <own:securitiesClassTitle>Class A Common Stock</own:securitiesClassTitle>
      <own:saleDate>08/25/2026</own:saleDate>
      <own:amountOfSecuritiesSold>57500</own:amountOfSecuritiesSold>
      <own:grossProceeds>3936351</own:grossProceeds>
    </own:securitiesSoldInPast3Months>
    <own:securitiesSoldInPast3Months>
      <own:sellerDetails>
        <own:name>Lefkofsky Family Foundation</own:name>
        <own:address>
          <com:street1>C/o Tempus AI, Inc.</com:street1>
          <com:street2>600 West Chicago Avenue, Suite 510</com:street2>
          <com:city>Chicago</com:city>
          <com:stateOrCountry>IL</com:stateOrCountry>
          <com:zipCode>60654</com:zipCode>
        </own:address>
      </own:sellerDetails>
      <own:securitiesClassTitle>Class A Common Stock</own:securitiesClassTitle>
      <own:saleDate>07/28/2026</own:saleDate>
      <own:amountOfSecuritiesSold>7500</own:amountOfSecuritiesSold>
      <own:grossProceeds>315468</own:grossProceeds>
    </own:securitiesSoldInPast3Months>
    <own:securitiesSoldInPast3Months>
      <own:sellerDetails>
        <own:name>Lefkofsky Family Foundation</own:name>
        <own:address>
          <com:street1>C/o Tempus AI, Inc.</com:street1>
          <com:street2>600 West Chicago Avenue, Suite 510</com:street2>
          <com:city>Chicago</com:city>
          <com:stateOrCountry>IL</com:stateOrCountry>
          <com:zipCode>60654</com:zipCode>
        </own:address>
      </own:sellerDetails>
      <own:securitiesClassTitle>Class A Common Stock</own:securitiesClassTitle>
      <own:saleDate>08/25/2026</own:saleDate>
      <own:amountOfSecuritiesSold>7500</own:amountOfSecuritiesSold>
      <own:grossProceeds>513437</own:grossProceeds>
    </own:securitiesSoldInPast3Months>
    <own:securitiesSoldInPast3Months>
      <own:sellerDetails>
        <own:name>Vas.org Foundation</own:name>
        <own:address>
          <com:street1>C/o Tempus AI, Inc.</com:street1>
          <com:street2>600 West Chicago Avenue, Suite 510</com:street2>
          <com:city>Chicago</com:city>
          <com:stateOrCountry>IL</com:stateOrCountry>
          <com:zipCode>60654</com:zipCode>
        </own:address>
      </own:sellerDetails>
      <own:securitiesClassTitle>Class A Common Stock</own:securitiesClassTitle>
      <own:saleDate>07/28/2026</own:saleDate>
      <own:amountOfSecuritiesSold>50000</own:amountOfSecuritiesSold>
      <own:grossProceeds>2103118</own:grossProceeds>
    </own:securitiesSoldInPast3Months>
    <own:remarks>This form relates to sales by Blue Media, LLC (135,000 shares), Gray Media, LLC (57,500 shares), Lefkofsky Family Foundation (7,500 shares) of which Mr. Lefkofsky is the authorized signatory.</own:remarks>
    <own:noticeSignature>
      <own:noticeDate>09/17/2026</own:noticeDate>
      <own:planAdoptionDates>
        <own:planAdoptionDate>03/08/2026</own:planAdoptionDate>
      </own:planAdoptionDates>
      <own:signature>/s/ J.P. Morgan Securities LLC as agent and attorney-in-fact for Eric Lefkofsky</own:signature>
    </own:noticeSignature>
  </own:formData>
</own:edgarSubmission>
