content: <?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:com="http://www.sec.gov/edgar/common">
    <headerData>
      <submissionType>144</submissionType>
      <filerInfo>
        <filer>
          <filerCredentials>
            <cik>0001818851</cik>
            <ccc>XXXXXXXX</ccc>
          </filerCredentials>
        </filer>
        <liveTestFlag>LIVE</liveTestFlag>
  
  
  
      </filerInfo>
    </headerData>
    <formData>
      <issuerInfo>
        <issuerCik>0001806837</issuerCik>
        <issuerName>Vertex, Inc.</issuerName>
        <secFileNumber>001-39413</secFileNumber>
        <issuerAddress>
          <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>Westphal Jeffery</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
        <relationshipsToIssuer>
          <relationshipToIssuer>10% Stockholder</relationshipToIssuer>
        </relationshipsToIssuer>
      </issuerInfo>
      <securitiesInformation>
        <securitiesClassTitle>Class A common stock</securitiesClassTitle>
        <brokerOrMarketmakerDetails>
          <name>Berenberg Capital Markets LLC</name>
          <address>
            <com:street1>1251 Avenue of the Americas</com:street1>
            <com:street2>53rd Floor</com:street2>
            <com:city>New York</com:city>
            <com:stateOrCountry>NY</com:stateOrCountry>
            <com:zipCode>10020</com:zipCode>
          </address>
        </brokerOrMarketmakerDetails>
        <noOfUnitsSold>1400000</noOfUnitsSold>
        <aggregateMarketValue>27440000.00</aggregateMarketValue>
        <noOfUnitsOutstanding>53860965</noOfUnitsOutstanding>
        <approxSaleDate>06/30/2023</approxSaleDate>
        <securitiesExchangeName>Nasdaq</securitiesExchangeName>
      </securitiesInformation>
      <securitiesInformation>
        <securitiesClassTitle>Class A common stock</securitiesClassTitle>
        <brokerOrMarketmakerDetails>
          <name>Goldman Sachs &amp; Co. LLC</name>
          <address>
            <com:street1>200 West Street</com:street1>
            <com:city>New York</com:city>
            <com:stateOrCountry>NY</com:stateOrCountry>
            <com:zipCode>10282</com:zipCode>
          </address>
        </brokerOrMarketmakerDetails>
        <noOfUnitsSold>500000</noOfUnitsSold>
        <aggregateMarketValue>9800000.00</aggregateMarketValue>
        <noOfUnitsOutstanding>53860965</noOfUnitsOutstanding>
        <approxSaleDate>06/30/2023</approxSaleDate>
        <securitiesExchangeName>Nasdaq</securitiesExchangeName>
      </securitiesInformation>
      <securitiesInformation>
        <securitiesClassTitle>Class A common stock</securitiesClassTitle>
        <brokerOrMarketmakerDetails>
          <name>UBS Financial Services Inc.</name>
          <address>
            <com:street1>8 Southwoods Blvd</com:street1>
            <com:city>Albany</com:city>
            <com:stateOrCountry>NY</com:stateOrCountry>
            <com:zipCode>12211</com:zipCode>
          </address>
        </brokerOrMarketmakerDetails>
        <noOfUnitsSold>325000</noOfUnitsSold>
        <aggregateMarketValue>6370000.00</aggregateMarketValue>
        <noOfUnitsOutstanding>53860965</noOfUnitsOutstanding>
        <approxSaleDate>06/30/2023</approxSaleDate>
        <securitiesExchangeName>Nasdaq</securitiesExchangeName>
      </securitiesInformation>
      <securitiesToBeSold>
        <securitiesClassTitle>Class A common stock</securitiesClassTitle>
        <acquiredDate>12/22/2009</acquiredDate>
        <natureOfAcquisitionTransaction>Acquired as a Gift</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Rainer J. Westphal</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>Y</isGiftTransaction>
        <donarAcquiredDate>12/22/2009</donarAcquiredDate>
        <amountOfSecuritiesAcquired>2225000</amountOfSecuritiesAcquired>
        <paymentDate>12/22/2009</paymentDate>
        <natureOfPayment>Gift</natureOfPayment>
      </securitiesToBeSold>
      <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>The 2009 Jeffrey R. Westphal Generation-Skipping Trust</name>
          <address>
            <com:street1>1106 Stackhouse Mill Road</com:street1>
            <com:city>Newtown Square</com:city>
            <com:stateOrCountry>PA</com:stateOrCountry>
            <com:zipCode>19073</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Class A common stock</securitiesClassTitle>
        <saleDate>06/28/2023</saleDate>
        <amountOfSecuritiesSold>800000</amountOfSecuritiesSold>
        <grossProceeds>6509379.00</grossProceeds>
      </securitiesSoldInPast3Months>
      <remarks>This Form 144 is for up to 1,725,000 shares of Class A common stock to be sold by The 2009 Jeffrey R. Westphal Generation-Skipping Trust and up to 500,000 shares of Class A common stock to be sold by The 2009 Jeffrey R. Westphal Generation-Skipping Sub-Trust FBO Jenifer R. Westphal. This Form 144 is being filed to supplement the Form 144 filed by the reporting person with the Securities and Exchange Commission on June 20, 2023 to increase the number of shares eligible to be sold by 227,500 shares in compliance with Rule 144.</remarks>
      <noticeSignature>
        <noticeDate>06/30/2023</noticeDate>
        <signature>/s/ Jeffrey R. Westphal</signature>
      </noticeSignature>
    </formData>
  </edgarSubmission>
metadata_documents: [{"type": "144", "sequence": "1", "filename": "primary_doc.xml", "secsgml_size_bytes": 5604}]
text: 144
  0001818851
  XXXXXXXX
  LIVE
  0001806837
  Vertex, Inc.
  001-39413
  2301 RENAISSANCE BOULEVARD
  KING OF PRUSSIA
  PA
  19406
  (800) 355-3500
  Westphal Jeffery
  10% Stockholder
  Class A common stock
  Berenberg Capital Markets LLC
  1251 Avenue of the Americas
  53rd Floor
  New York
  NY
  10020
  1400000
  27440000.00
  53860965
  06/30/2023
  Nasdaq
  Class A common stock
  Goldman Sachs & Co. LLC
  200 West Street
  New York
  NY
  10282
  500000
  9800000.00
  53860965
  06/30/2023
  Nasdaq
  Class A common stock
  UBS Financial Services Inc.
  8 Southwoods Blvd
  Albany
  NY
  12211
  325000
  6370000.00
  53860965
  06/30/2023
  Nasdaq
  Class A common stock
  12/22/2009
  Acquired as a Gift
  Rainer J. Westphal
  Y
  12/22/2009
  2225000
  12/22/2009
  Gift
  N
  The 2009 Jeffrey R. Westphal Generation-Skipping Trust
  1106 Stackhouse Mill Road
  Newtown Square
  PA
  19073
  Class A common stock
  06/28/2023
  800000
  6509379.00
  This Form 144 is for up to 1,725,000 shares of Class A common stock to be sold by The 2009 Jeffrey R. Westphal Generation-Skipping Trust and up to 500,000 shares of Class A common stock to be sold by The 2009 Jeffrey R. Westphal Generation-Skipping Sub-Trust FBO Jenifer R. Westphal. This Form 144 is being filed to supplement the Form 144 filed by the reporting person with the Securities and Exchange Commission on June 20, 2023 to increase the number of shares eligible to be sold by 227,500 shares in compliance with Rule 144.
  06/30/2023
  /s/ Jeffrey R. Westphal