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      <issuerCik>0001031308</issuerCik>
      <issuerName>BENTLEY SYSTEMS INC</issuerName>
      <secFileNumber>001-39548</secFileNumber>
      <issuerAddress>
        <com:street1>685 STOCKTON DRIVE</com:street1>
        <com:city>EXTON</com:city>
        <com:stateOrCountry>PA</com:stateOrCountry>
        <com:zipCode>19341</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>6104585000</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Bentley Keith A.</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Director</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>COMMON CL B</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>1000000</noOfUnitsSold>
      <aggregateMarketValue>49200000.00</aggregateMarketValue>
      <noOfUnitsOutstanding>285788718</noOfUnitsOutstanding>
      <approxSaleDate>03/01/2024</approxSaleDate>
      <securitiesExchangeName>NASDAQ</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>COMMON CL B</securitiesClassTitle>
      <acquiredDate>04/11/2011</acquiredDate>
      <natureOfAcquisitionTransaction>VARIOUS</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>ISSUER</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>1000000</amountOfSecuritiesAcquired>
      <paymentDate>04/11/2011</paymentDate>
      <natureOfPayment>NA</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <remarks>Shares acquired from 4/11/11 - 10/25/23 through compensation, warrant conversion &amp; founders shares.</remarks>
    <noticeSignature>
      <noticeDate>03/01/2024</noticeDate>
      <planAdoptionDates>
        <planAdoptionDate>11/08/2023</planAdoptionDate>
      </planAdoptionDates>
      <signature>KEITH A BENTLEY</signature>
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144
0001825187
XXXXXXXX
LIVE
0001031308
BENTLEY SYSTEMS INC
001-39548
685 STOCKTON DRIVE
EXTON
PA
19341
6104585000
Bentley Keith A.
Director
COMMON CL B
THE CHARLES SCHWAB CORPORATION
3000 Schwab Way
Westlake
TX
76262
1000000
49200000.00
285788718
03/01/2024
NASDAQ
COMMON CL B
04/11/2011
VARIOUS
ISSUER
N
1000000
04/11/2011
NA
Y
Shares acquired from 4/11/11 - 10/25/23 through compensation, warrant conversion & founders shares.
03/01/2024
11/08/2023
KEITH A BENTLEY