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The Reporting Person undertakes to provide to 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."}],"balance_after":31028,"source":{"system":"sec-edgar","filing":"0001415889-21-005729","document":"form4-12062021_011204.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1818885/000141588921005729/form4-12062021_011204.xml","form_type":"4"}},{"id":2591035,"issuer":{"id":4427,"kind":"organization","name":"Vertex, Inc.","symbol":"VERX"},"owners":[{"id":38793,"kind":"person","name":"Stamm John Richard","position":1,"cik":"0001818885","reported_name":"Stamm John Richard","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2021-08-25T16:30:35.000Z","date":"2021-08-19","kind":"sale","acquired":false,"shares":8678,"price":19.174,"value":166391.972,"ownership":{"direct":true},"balance_after":43028,"source":{"system":"sec-edgar","filing":"0000899243-21-034150","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1818885/000089924321034150/doc4.xml","form_type":"4"}},{"id":2664116,"issuer":{"id":4427,"kind":"organization","name":"Vertex, Inc.","symbol":"VERX"},"owners":[{"id":38793,"kind":"person","name":"Stamm John Richard","position":1,"cik":"0001818885","reported_name":"Stamm John Richard","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2021-06-17T16:31:39.000Z","date":"2021-06-15","kind":"sale","acquired":false,"shares":16000,"price":18.983,"value":303728.0,"ownership":{"direct":true},"balance_after":51706,"source":{"system":"sec-edgar","filing":"0001104659-21-082637","document":"tm2119327-3_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1818885/000110465921082637/tm2119327-3_4seq1.xml","form_type":"4"}},{"id":2714678,"issuer":{"id":4427,"kind":"organization","name":"Vertex, Inc.","symbol":"VERX"},"owners":[{"id":38793,"kind":"person","name":"Stamm John Richard","position":1,"cik":"0001818885","reported_name":"Stamm John Richard","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2021-05-13T17:44:16.000Z","date":"2021-05-11","kind":"grant","acquired":true,"shares":8494,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents an award of restricted stock that will vest on the earlier to occur of (i) the day immediately prior to the date of the next annual meeting of the Company's stockholders and (ii) May 11, 2022."}],"balance_after":67706,"source":{"system":"sec-edgar","filing":"0001104659-21-066094","document":"tm2115866-4_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1818885/000110465921066094/tm2115866-4_4seq1.xml","form_type":"4"}}]}