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      <liveTestFlag>LIVE</liveTestFlag>


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      <issuerCik>0000857005</issuerCik>
      <issuerName>PTC INC.</issuerName>
      <secFileNumber>000-18059</secFileNumber>
      <issuerAddress>
        <com:street1>121 SEAPORT BOULEVARD</com:street1>
        <com:city>BOSTON</com:city>
        <com:stateOrCountry>MA</com:stateOrCountry>
        <com:zipCode>02210</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>7813705000</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>CHAFFIN JANICE</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Director</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>COMMON</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>THE CHARLES SCHWAB CORPORATION</name>
        <address>
          <com:street1>3000 Schwab Way</com:street1>
          <com:city>Westlake</com:city>
          <com:stateOrCountry>TX</com:stateOrCountry>
          <com:zipCode>76262</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>12000</noOfUnitsSold>
      <aggregateMarketValue>1906160.00</aggregateMarketValue>
      <noOfUnitsOutstanding>119744260</noOfUnitsOutstanding>
      <approxSaleDate>06/12/2024</approxSaleDate>
      <securitiesExchangeName>NASDAQ</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>COMMON</securitiesClassTitle>
      <acquiredDate>03/05/2014</acquiredDate>
      <natureOfAcquisitionTransaction>VESTED SHARES</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>ISSUER</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>12000</amountOfSecuritiesAcquired>
      <paymentDate>03/05/2014</paymentDate>
      <natureOfPayment>NA</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <remarks>FULL ACCOUNT TITLE: J CHAFFIN &amp; J CHAFFIN TTEE THE CHAFFIN 2000 TRUST SHARES ACQUIRED ON FOLLOWING DATES: 3/5/14, 8/19/14, and 3/9/15</remarks>
    <noticeSignature>
      <noticeDate>06/12/2024</noticeDate>
      <planAdoptionDates>
        <planAdoptionDate>03/01/2024</planAdoptionDate>
      </planAdoptionDates>
      <signature>JANICE DURBIN CHAFFIN</signature>
    </noticeSignature>
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144
0001202443
XXXXXXXX
LIVE
0000857005
PTC INC.
000-18059
121 SEAPORT BOULEVARD
BOSTON
MA
02210
7813705000
CHAFFIN JANICE
Director
COMMON
THE CHARLES SCHWAB CORPORATION
3000 Schwab Way
Westlake
TX
76262
12000
1906160.00
119744260
06/12/2024
NASDAQ
COMMON
03/05/2014
VESTED SHARES
ISSUER
N
12000
03/05/2014
NA
Y
FULL ACCOUNT TITLE: J CHAFFIN & J CHAFFIN TTEE THE CHAFFIN 2000 TRUST SHARES ACQUIRED ON FOLLOWING DATES: 3/5/14, 8/19/14, and 3/9/15
06/12/2024
03/01/2024
JANICE DURBIN CHAFFIN