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      <secFileNumber>001-39413</secFileNumber>
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        <com:street1>2301 RENAISSANCE BOULEVARD</com:street1>
        <com:city>KING OF PRUSSIA</com:city>
        <com:stateOrCountry>PA</com:stateOrCountry>
        <com:zipCode>19406</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>(800) 355-3500</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>DeStefano David</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Officer</relationshipToIssuer>
        <relationshipToIssuer>Director</relationshipToIssuer>
      </relationshipsToIssuer>
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    <securitiesInformation>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Wells Fargo Advisors</name>
        <address>
          <com:street1>1 N. Jefferson Ave</com:street1>
          <com:city>St. Louis</com:city>
          <com:stateOrCountry>MO</com:stateOrCountry>
          <com:zipCode>63123</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>12177</noOfUnitsSold>
      <aggregateMarketValue>365950.29</aggregateMarketValue>
      <noOfUnitsOutstanding>61673585</noOfUnitsOutstanding>
      <approxSaleDate>03/08/2024</approxSaleDate>
      <securitiesExchangeName>Nasdaq</securitiesExchangeName>
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      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>07/28/2021</acquiredDate>
      <natureOfAcquisitionTransaction>Stock Vesting</natureOfAcquisitionTransaction>
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      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>12177</amountOfSecuritiesAcquired>
      <paymentDate>07/28/2021</paymentDate>
      <natureOfPayment>N/A</natureOfPayment>
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        <address>
          <com:street1>2301 RENAISSANCE BOULEVARD</com:street1>
          <com:city>KING OF PRUSSIA</com:city>
          <com:stateOrCountry>PA</com:stateOrCountry>
          <com:zipCode>19406</com:zipCode>
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      <securitiesClassTitle>Common- Vertex, Inc.</securitiesClassTitle>
      <saleDate>12/15/2023</saleDate>
      <amountOfSecuritiesSold>39300</amountOfSecuritiesSold>
      <grossProceeds>1066006.56</grossProceeds>
    </securitiesSoldInPast3Months>
    <noticeSignature>
      <noticeDate>03/08/2024</noticeDate>
      <signature>David J. DeStefano</signature>
    </noticeSignature>
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144
0001818526
XXXXXXXX
LIVE
0001806837
Vertex, Inc.
001-39413
2301 RENAISSANCE BOULEVARD
KING OF PRUSSIA
PA
19406
(800) 355-3500
DeStefano David
Officer
Director
Common
Wells Fargo Advisors
1 N. Jefferson Ave
St. Louis
MO
63123
12177
365950.29
61673585
03/08/2024
Nasdaq
Common
07/28/2021
Stock Vesting
Issuer
N
12177
07/28/2021
N/A
N
David J. Destefano
2301 RENAISSANCE BOULEVARD
KING OF PRUSSIA
PA
19406
Common- Vertex, Inc.
12/15/2023
39300
1066006.56
03/08/2024
David J. DeStefano