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Premium service is only $9.99 a month.You can try our streaming API via WebSockets which will automate your trading <div><?xml version="1.0"?> <ownershipDocument> <schemaVersion>X0306</schemaVersion> <documentType>4</documentType> <periodOfReport>2022-09-15</periodOfReport> <issuer> <issuerCik>0001806837</issuerCik> <issuerName>Vertex, Inc.</issuerName> <issuerTradingSymbol>VERX</issuerTradingSymbol> </issuer> <reportingOwner> <reportingOwnerId> <rptOwnerCik>0001818526</rptOwnerCik> <rptOwnerName>DeStefano David</rptOwnerName> </reportingOwnerId> <reportingOwnerAddress> <rptOwnerStreet1>C/O VERTEX, INC.</rptOwnerStreet1> <rptOwnerStreet2>2301 RENAISSANCE BLVD</rptOwnerStreet2> <rptOwnerCity>KING OF PRUSSIA</rptOwnerCity> <rptOwnerState>PA</rptOwnerState> <rptOwnerZipCode>19406</rptOwnerZipCode> <rptOwnerStateDescription></rptOwnerStateDescription> </reportingOwnerAddress> <reportingOwnerRelationship> <isDirector>true</isDirector> <isOfficer>true</isOfficer> <isTenPercentOwner>false</isTenPercentOwner> <isOther>false</isOther> <officerTitle>PRESIDENT & CEO</officerTitle> <otherText></otherText> </reportingOwnerRelationship> </reportingOwner> <nonDerivativeTable> <nonDerivativeTransaction> <securityTitle> <value>Class A Common Stock</value> </securityTitle> <transactionDate> <value>2022-09-15</value> </transactionDate> <transactionCoding> <transactionFormType>4</transactionFormType> <transactionCode>S</transactionCode> <equitySwapInvolved>0</equitySwapInvolved> <footnoteId id="F1"/> </transactionCoding> <transactionAmounts> <transactionShares> <value>47275</value> </transactionShares> <transactionPricePerShare> <value>14.511</value> <footnoteId id="F2"/> </transactionPricePerShare> <transactionAcquiredDisposedCode> <value>D</value> </transactionAcquiredDisposedCode> </transactionAmounts> <postTransactionAmounts> <sharesOwnedFollowingTransaction> <value>520305</value> </sharesOwnedFollowingTransaction> </postTransactionAmounts> <ownershipNature> <directOrIndirectOwnership> <value>D</value> </directOrIndirectOwnership> <natureOfOwnership> <value></value> </natureOfOwnership> </ownershipNature> </nonDerivativeTransaction> <nonDerivativeTransaction> <securityTitle> <value>Class A Common Stock</value> </securityTitle> <transactionDate> <value>2022-09-16</value> </transactionDate> <transactionCoding> <transactionFormType>4</transactionFormType> <transactionCode>S</transactionCode> <equitySwapInvolved>0</equitySwapInvolved> <footnoteId id="F1"/> </transactionCoding> <transactionAmounts> <transactionShares> <value>60943</value> </transactionShares> <transactionPricePerShare> <value>13.9412</value> <footnoteId id="F3"/> </transactionPricePerShare> <transactionAcquiredDisposedCode> <value>D</value> </transactionAcquiredDisposedCode> </transactionAmounts> <postTransactionAmounts> <sharesOwnedFollowingTransaction> <value>459362</value> </sharesOwnedFollowingTransaction> </postTransactionAmounts> <ownershipNature> <directOrIndirectOwnership> <value>D</value> </directOrIndirectOwnership> <natureOfOwnership> <value></value> </natureOfOwnership> </ownershipNature> </nonDerivativeTransaction> <nonDerivativeTransaction> <securityTitle> <value>Class A Common Stock</value> </securityTitle> <transactionDate> <value>2022-09-19</value> </transactionDate> <transactionCoding> <transactionFormType>4</transactionFormType> <transactionCode>S</transactionCode> <equitySwapInvolved>0</equitySwapInvolved> <footnoteId id="F1"/> </transactionCoding> <transactionAmounts> <transactionShares> <value>26340</value> </transactionShares> <transactionPricePerShare> <value>13.7288</value> <footnoteId id="F4"/> </transactionPricePerShare> <transactionAcquiredDisposedCode> <value>D</value> </transactionAcquiredDisposedCode> </transactionAmounts> <postTransactionAmounts> <sharesOwnedFollowingTransaction> <value>433022</value> </sharesOwnedFollowingTransaction> </postTransactionAmounts> <ownershipNature> <directOrIndirectOwnership> <value>D</value> </directOrIndirectOwnership> <natureOfOwnership> <value></value> </natureOfOwnership> </ownershipNature> </nonDerivativeTransaction> </nonDerivativeTable> <derivativeTable></derivativeTable> <footnotes> <footnote id="F1">The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 Trading Plan adopted by the Reporting Person.</footnote> <footnote id="F2">The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $14.31 to $14.95, inclusive. The Reporting Person undertakes to provide the Issuer, any securityholder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.</footnote> <footnote id="F3">The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $13.56 to $14.15, inclusive. The Reporting Person undertakes to provide the Issuer, any securityholder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.</footnote> <footnote id="F4">The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $13.51 to $13.94, inclusive. The Reporting Person undertakes to provide the Issuer, any securityholder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.</footnote> </footnotes> <ownerSignature> <signatureName>/s/ Lisa Coleman, Attorney-in-Fact</signatureName> <signatureDate>2022-09-19</signatureDate> </ownerSignature> </ownershipDocument> <br></div> More