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The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":64212,"source":{"system":"sec-edgar","filing":"0001269847-19-000028","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/935036/000126984719000028/edgardoc.xml","form_type":"4"}},{"id":3342651,"issuer":{"id":3881,"kind":"organization","name":"ACI WORLDWIDE, INC.","symbol":"ACIW"},"owners":[{"id":150469,"kind":"person","name":"HOMBERGER CAROLYN B","position":1,"cik":"0001628792","reported_name":"HOMBERGER CAROLYN B","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Chief Risk Officer"}}],"security":"Common Stock","published_at":"2019-12-13T23:10:34.000Z","date":"2019-12-10","kind":"exercise","acquired":true,"shares":3378,"price":9.6467,"value":32586.5526,"ownership":{"direct":true},"balance_after":67590,"source":{"system":"sec-edgar","filing":"0001269847-19-000028","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/935036/000126984719000028/edgardoc.xml","form_type":"4"}},{"id":4265660,"issuer":{"id":3881,"kind":"organization","name":"ACI WORLDWIDE, INC.","symbol":"ACIW"},"owners":[{"id":150469,"kind":"person","name":"HOMBERGER CAROLYN B","position":1,"cik":"0001628792","reported_name":"HOMBERGER CAROLYN B","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Group President Global Sales"}}],"security":"Common Stock","published_at":"2017-07-05T22:08:53.000Z","date":"2017-07-01","kind":"disposition_to_issuer","acquired":false,"shares":1605,"price":22.37,"value":35903.85,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares surrendered by the reporting person to pay the tax liability due upon the vesting of one-half of their restricted stock award granted on February 23, 2016."}],"balance_after":41577,"source":{"system":"sec-edgar","filing":"0001269847-17-000037","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/935036/000126984717000037/edgardoc.xml","form_type":"4"}},{"id":4284319,"issuer":{"id":3881,"kind":"organization","name":"ACI WORLDWIDE, INC.","symbol":"ACIW"},"owners":[{"id":150469,"kind":"person","name":"HOMBERGER CAROLYN B","position":1,"cik":"0001628792","reported_name":"HOMBERGER CAROLYN B","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Group President Global Sales"}}],"security":"Common Stock","published_at":"2017-06-13T21:18:34.000Z","date":"2017-06-09","kind":"other","acquired":false,"shares":110,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"The performance-based restricted stock referred to in footnote 1 was earned at 98%.  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