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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 2012 Gift Trust FBO Jennifer Frank</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>10% Stockholder</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>225000</noOfUnitsSold>
      <aggregateMarketValue>11092500.00</aggregateMarketValue>
      <noOfUnitsOutstanding>290620299</noOfUnitsOutstanding>
      <approxSaleDate>08/14/2024</approxSaleDate>
      <securitiesExchangeName>Nasdaq</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Class B</securitiesClassTitle>
      <acquiredDate>02/23/2017</acquiredDate>
      <natureOfAcquisitionTransaction>Gift</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Keith Bentley</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>Y</isGiftTransaction>
      <donarAcquiredDate>08/14/1987</donarAcquiredDate>
      <amountOfSecuritiesAcquired>225000</amountOfSecuritiesAcquired>
      <paymentDate>02/23/2017</paymentDate>
      <natureOfPayment>Gift</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
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      <sellerDetails>
        <name>Corinne P Bentley</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>05/29/2024</saleDate>
      <amountOfSecuritiesSold>109158</amountOfSecuritiesSold>
      <grossProceeds>5689739.48</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Corinne P Bentley</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>05/30/2024</saleDate>
      <amountOfSecuritiesSold>150000</amountOfSecuritiesSold>
      <grossProceeds>7610482.05</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Corinne P Bentley</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>05/31/2024</saleDate>
      <amountOfSecuritiesSold>150000</amountOfSecuritiesSold>
      <grossProceeds>7464581.14</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Corinne P Bentley</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>06/01/2024</saleDate>
      <amountOfSecuritiesSold>140480</amountOfSecuritiesSold>
      <grossProceeds>6973404.68</grossProceeds>
    </securitiesSoldInPast3Months>
    <remarks>Corinne P Bentley Trustee Keith A Bentley 2012 Gift Trust FBO Jennifer Frank Funding</remarks>
    <noticeSignature>
      <noticeDate>08/14/2024</noticeDate>
      <signature>Corinne P Bentley</signature>
    </noticeSignature>
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144
0001976996
XXXXXXXX
LIVE
0001031308
BENTLEY SYSTEMS INC
001-39548
685 STOCKTON DRIVE
EXTON
PA
19341
6104585000
Keith A Bentley 2012 Gift Trust FBO Jennifer Frank
10% Stockholder
Class B
Charles Schwab Corp.
3000 Schwab Way
Westlake
TX
76262
225000
11092500.00
290620299
08/14/2024
Nasdaq
Class B
02/23/2017
Gift
Keith Bentley
Y
08/14/1987
225000
02/23/2017
Gift
N
Corinne P Bentley
685 Stockton Drive
Exton
PA
19341
Class B
05/29/2024
109158
5689739.48
Corinne P Bentley
685 Stockton Drive
Exton
PA
19341
Class B
05/30/2024
150000
7610482.05
Corinne P Bentley
685 Stockton Drive
Exton
PA
19341
Class B
05/31/2024
150000
7464581.14
Corinne P Bentley
685 Stockton Drive
Exton
PA
19341
Class B
06/01/2024
140480
6973404.68
Corinne P Bentley Trustee Keith A Bentley 2012 Gift Trust FBO Jennifer Frank Funding
08/14/2024
Corinne P Bentley