<?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>0001831598</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <issuerInfo>
      <issuerCik>0000320121</issuerCik>
      <issuerName>Telos Corp</issuerName>
      <secFileNumber>001-08443</secFileNumber>
      <issuerAddress>
        <com:street1>19886 Ashburn Road</com:street1>
        <com:city>Ashburn</com:city>
        <com:stateOrCountry>VA</com:stateOrCountry>
        <com:zipCode>20147</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>7037243800</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Bonnie Carroll</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Director</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Baird</name>
        <address>
          <com:street1>3800 Centerpoint Drive, Suite 1120</com:street1>
          <com:city>Anchorage</com:city>
          <com:stateOrCountry>AK</com:stateOrCountry>
          <com:zipCode>99503</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>45555</noOfUnitsSold>
      <aggregateMarketValue>124365.15</aggregateMarketValue>
      <noOfUnitsOutstanding>73484720</noOfUnitsOutstanding>
      <approxSaleDate>06/06/2025</approxSaleDate>
      <securitiesExchangeName>nasdaq</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>05/08/2024</acquiredDate>
      <natureOfAcquisitionTransaction>Vesting</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Telos Corporation</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>55555</amountOfSecuritiesAcquired>
      <paymentDate>05/08/2024</paymentDate>
      <natureOfPayment>Compensation</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <noticeSignature>
      <noticeDate>06/06/2025</noticeDate>
      <signature>Helen M. Oh, Attorney-in-Fact</signature>
    </noticeSignature>
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144
0001831598
XXXXXXXX
LIVE
0000320121
Telos Corp
001-08443
19886 Ashburn Road
Ashburn
VA
20147
7037243800
Bonnie Carroll
Director
Common
Baird
3800 Centerpoint Drive, Suite 1120
Anchorage
AK
99503
45555
124365.15
73484720
06/06/2025
nasdaq
Common
05/08/2024
Vesting
Telos Corporation
N
55555
05/08/2024
Compensation
Y
06/06/2025
Helen M. Oh, Attorney-in-Fact