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          <ccc>XXXXXXXX</ccc>
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      <liveTestFlag>LIVE</liveTestFlag>



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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>Keith A Bentley 2007 Gift Trust FBO Sarah Bentley</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Director</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Class B</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Charles Schwab Corp.</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>112738</noOfUnitsSold>
      <aggregateMarketValue>5543327.00</aggregateMarketValue>
      <noOfUnitsOutstanding>290712297</noOfUnitsOutstanding>
      <approxSaleDate>11/08/2024</approxSaleDate>
      <securitiesExchangeName>Nasdaq</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Class B</securitiesClassTitle>
      <acquiredDate>10/15/2015</acquiredDate>
      <natureOfAcquisitionTransaction>Received as gift</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Keith A Bentley</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>Y</isGiftTransaction>
      <donarAcquiredDate>08/14/1987</donarAcquiredDate>
      <amountOfSecuritiesAcquired>112738</amountOfSecuritiesAcquired>
      <paymentDate>10/15/2015</paymentDate>
      <natureOfPayment>Received as gift</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Keith A Bentley 2012 Gift Trust for Jennifer Funding</name>
        <address>
          <com:street1>685 Stockton Drive</com:street1>
          <com:city>Exton</com:city>
          <com:stateOrCountry>PA</com:stateOrCountry>
          <com:zipCode>19341</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Class B</securitiesClassTitle>
      <saleDate>08/15/2024</saleDate>
      <amountOfSecuritiesSold>205500</amountOfSecuritiesSold>
      <grossProceeds>10280106.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Keith A Bentley 2012 Gift Trust for Jennifer Funding</name>
        <address>
          <com:street1>685 Stockton Drive</com:street1>
          <com:city>Exton</com:city>
          <com:stateOrCountry>PA</com:stateOrCountry>
          <com:zipCode>19341</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Class B</securitiesClassTitle>
      <saleDate>08/16/2024</saleDate>
      <amountOfSecuritiesSold>532</amountOfSecuritiesSold>
      <grossProceeds>26556.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <remarks>Corinne Bentley Trustee, Keith A Bentley Grantor, Keith A Bentley 2007 Gift Trust for Sarah L Bentley</remarks>
    <noticeSignature>
      <noticeDate>11/08/2024</noticeDate>
      <signature>Corinne Bentley ttee</signature>
    </noticeSignature>
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144
0001977104
XXXXXXXX
LIVE
0001031308
BENTLEY SYSTEMS INC
001-39548
685 STOCKTON DRIVE
EXTON
PA
19341
6104585000
Keith A Bentley 2007 Gift Trust FBO Sarah Bentley
Director
Class B
Charles Schwab Corp.
3000 Schwab Way
Westlake
TX
76262
112738
5543327.00
290712297
11/08/2024
Nasdaq
Class B
10/15/2015
Received as gift
Keith A Bentley
Y
08/14/1987
112738
10/15/2015
Received as gift
N
Keith A Bentley 2012 Gift Trust for Jennifer Funding
685 Stockton Drive
Exton
PA
19341
Class B
08/15/2024
205500
10280106.00
Keith A Bentley 2012 Gift Trust for Jennifer Funding
685 Stockton Drive
Exton
PA
19341
Class B
08/16/2024
532
26556.00
Corinne Bentley Trustee, Keith A Bentley Grantor, Keith A Bentley 2007 Gift Trust for Sarah L Bentley
11/08/2024
Corinne Bentley ttee