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      <filerInfo>
        <filer>
          <filerCredentials>
            <cik>0001222574</cik>
            <ccc>XXXXXXXX</ccc>
          </filerCredentials>
        </filer>
        <liveTestFlag>LIVE</liveTestFlag>
  
  
      </filerInfo>
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      <issuerInfo>
        <issuerCik>0001013857</issuerCik>
        <issuerName>PEGASYSTEMS INC</issuerName>
        <secFileNumber>001-11859</secFileNumber>
        <issuerAddress>
          <com:street1>ONE MAIN STREET</com:street1>
          <com:city>CAMBRIDGE</com:city>
          <com:stateOrCountry>MA</com:stateOrCountry>
          <com:zipCode>02142-1531</com:zipCode>
        </issuerAddress>
        <issuerContactPhone>6173749600</issuerContactPhone>
        <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>JONES RICHARD H</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
        <relationshipsToIssuer>
          <relationshipToIssuer>Director</relationshipToIssuer>
        </relationshipsToIssuer>
      </issuerInfo>
      <securitiesInformation>
        <securitiesClassTitle>COMMON STOCK</securitiesClassTitle>
        <brokerOrMarketmakerDetails>
          <name>Cowen &amp; Company. LLC</name>
          <address>
            <com:street1>599 Lexington Ave</com:street1>
            <com:city>New York</com:city>
            <com:stateOrCountry>NY</com:stateOrCountry>
            <com:zipCode>10022</com:zipCode>
          </address>
        </brokerOrMarketmakerDetails>
        <noOfUnitsSold>297</noOfUnitsSold>
        <aggregateMarketValue>15000.00</aggregateMarketValue>
        <noOfUnitsOutstanding>82960000</noOfUnitsOutstanding>
        <approxSaleDate>08/02/2023</approxSaleDate>
        <securitiesExchangeName>Nasdaq</securitiesExchangeName>
      </securitiesInformation>
      <securitiesToBeSold>
        <securitiesClassTitle>Common Stock</securitiesClassTitle>
        <acquiredDate>12/12/2019</acquiredDate>
        <natureOfAcquisitionTransaction>Contribution from Richard H Jones</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Pegasystems, Inc</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>75000</amountOfSecuritiesAcquired>
        <paymentDate>12/12/2019</paymentDate>
        <natureOfPayment>Contribution</natureOfPayment>
      </securitiesToBeSold>
      <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>Jones Family Foundation</name>
          <address>
            <com:street1>One Main Street</com:street1>
            <com:city>Cambridge</com:city>
            <com:stateOrCountry>MA</com:stateOrCountry>
            <com:zipCode>02142</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>COMMON STOCK</securitiesClassTitle>
        <saleDate>06/01/2023</saleDate>
        <amountOfSecuritiesSold>4000</amountOfSecuritiesSold>
        <grossProceeds>190621.20</grossProceeds>
      </securitiesSoldInPast3Months>
      <noticeSignature>
        <noticeDate>08/02/2023</noticeDate>
        <signature>/S/ Richard H. Jones</signature>
      </noticeSignature>
    </formData>
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text: 144
  0001222574
  XXXXXXXX
  LIVE
  0001013857
  PEGASYSTEMS INC
  001-11859
  ONE MAIN STREET
  CAMBRIDGE
  MA
  02142-1531
  6173749600
  JONES RICHARD H
  Director
  COMMON STOCK
  Cowen & Company. LLC
  599 Lexington Ave
  New York
  NY
  10022
  297
  15000.00
  82960000
  08/02/2023
  Nasdaq
  Common Stock
  12/12/2019
  Contribution from Richard H Jones
  Pegasystems, Inc
  N
  75000
  12/12/2019
  Contribution
  N
  Jones Family Foundation
  One Main Street
  Cambridge
  MA
  02142
  COMMON STOCK
  06/01/2023
  4000
  190621.20
  08/02/2023
  /S/ Richard H. Jones