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Information herein was provided by the Plan Trustee as of 06-30-17."}],"balance_after":1102,"source":{"system":"sec-edgar","filing":"0001179110-17-009893","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017009893/edgar.xml","form_type":"4"}},{"id":4268501,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":144184,"kind":"person","name":"Gottschalk Keith","position":1,"cik":"0001673284","reported_name":"Gottschalk Keith","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP"}}],"security":"Old Second Bancorp, Inc.Common Stock","published_at":"2017-07-03T17:41:13.000Z","date":"2017-06-30","kind":"grant","acquired":true,"shares":1,"ownership":{"direct":false,"nature":"Profit Sharing"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Does not apply."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Of this total, 1 share was allocated during the second quarter 2017 pursuant to the Old Second Bancorp, Inc. Profit Sharing Plan & Trust. Information herein was provided by the Plan Trustee as of 06-30-17."}],"balance_after":374,"source":{"system":"sec-edgar","filing":"0001179110-17-009893","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017009893/edgar.xml","form_type":"4"}},{"id":4274981,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":144184,"kind":"person","name":"Gottschalk Keith","position":1,"cik":"0001673284","reported_name":"Gottschalk Keith","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP"}}],"security":"Old Second Bancorp, Inc. 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Information herein was provided by the Plan Trustee as of 3-31-17."}],"balance_after":1101,"source":{"system":"sec-edgar","filing":"0001179110-17-005451","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017005451/edgar.xml","form_type":"4"}},{"id":4363691,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":144184,"kind":"person","name":"Gottschalk Keith","position":1,"cik":"0001673284","reported_name":"Gottschalk Keith","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP"}}],"security":"Old Second Bancorp, Inc.Common Stock","published_at":"2017-04-04T14:12:35.000Z","date":"2017-03-31","kind":"grant","acquired":true,"shares":1,"ownership":{"direct":false,"nature":"Profit Sharing"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Does not apply."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Of this total, 1 share was allocated during the first quarter pursuant to the Old Second Bancorp, Inc. Profit Sharing Plan & Trust. Information herein was provided by the Plan Trustee as of 3-31-17."}],"balance_after":373,"source":{"system":"sec-edgar","filing":"0001179110-17-005451","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017005451/edgar.xml","form_type":"4"}},{"id":4433888,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":144184,"kind":"person","name":"Gottschalk Keith","position":1,"cik":"0001673284","reported_name":"Gottschalk Keith","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP"}}],"security":"Old Second Bancorp, Inc. 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These shares have a 3-year cliff vesting."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Of this total, 32,500 shares are restricted stock units, 36.054 shares are dividend equivalents in the form of restricted stock units."}],"balance_after":32536.054,"source":{"system":"sec-edgar","filing":"0001179110-17-002941","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017002941/edgar.xml","form_type":"4"}},{"id":4441286,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":144184,"kind":"person","name":"Gottschalk Keith","position":1,"cik":"0001673284","reported_name":"Gottschalk Keith","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP"}}],"security":"Old Second Bancorp, Inc. 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