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The reporting person was granted 11,962 restricted stock units on the date of the grant, 5,981 of which are time-based restricted stock units that vest on the third anniversary of the grant date, and 5,981 of which are performance-based restricted stock units that may vest and convert to shares within a range from 0% to 175% of the underlying performance-based restricted stock units originally awarded, depending on our compensation committee approved performance metrics. Vested shares, if any, will be delivered to the reporting person in 3 to 5 business days from the date of vesting."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Of this total, 31,146 shares are Performance-based Restricted Stock Units and 22,473 are time-based Restricted Stock Units."}],"balance_after":53619,"source":{"system":"sec-edgar","filing":"0001415889-25-005031","document":"form4-02212025_080245.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588925005031/form4-02212025_080245.xml","form_type":"4"}},{"id":1319310,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VICE CHAIRMAN"}}],"security":"Old Second Bancorp, Inc. 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Information herein was provided by the Plan Trustee as of 12-31-24."}],"balance_after":6370,"source":{"system":"sec-edgar","filing":"0001415889-25-000060","document":"form4-01022025_070116.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588925000060/form4-01022025_070116.xml","form_type":"4"}},{"id":1391185,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VICE CHAIRMAN"}}],"security":"Old Second Bancorp, Inc. 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Information herein was provided by the Plan Trustee as of 09-30-24."}],"balance_after":6333,"source":{"system":"sec-edgar","filing":"0001415889-24-024740","document":"form4-10042024_061009.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588924024740/form4-10042024_061009.xml","form_type":"4"}},{"id":1464677,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VICE CHAIRMAN"}}],"security":"Old Second Bancorp, Inc. 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Information herein was provided by the plan Trustee as of 6-30-24."}],"balance_after":6257,"source":{"system":"sec-edgar","filing":"0001415889-24-018827","document":"form4-07022024_050743.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588924018827/form4-07022024_050743.xml","form_type":"4"}},{"id":1464676,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VICE CHAIRMAN"}}],"security":"Old Second Bancorp, Inc. 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Information herein was provided by the plan Trustee as of 3-31-24."}],"balance_after":6128,"source":{"system":"sec-edgar","filing":"0001415889-24-018827","document":"form4-07022024_050743.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588924018827/form4-07022024_050743.xml","form_type":"4"}},{"id":1522648,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VICE CHAIRMAN"}}],"security":"Old Second Bancorp, Inc. 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The reporting person undertakes to provide to Old Second Bancorp, Inc., any security holder of Old Second Bancorp, Inc., 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 ranges set forth in footnote 1 to this Form 4."}],"balance_after":46624,"source":{"system":"sec-edgar","filing":"0001415889-24-012730","document":"form4-05092024_080539.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588924012730/form4-05092024_080539.xml","form_type":"4"}},{"id":1536542,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VICE CHAIRMAN"}}],"security":"Old Second Bancorp, Inc. 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The reporting person was granted 16,492 restricted stock units on the date of the grant, 8,246 of which are time-based restricted stock units that vest on the third anniversary of the grant date, and 8,246 of which are performance-based restricted stock units that may vest and convert to shares within a range from 0% to 175% of the underlying performance-based restricted stock units originally awarded, depending on our compensation committee approved performance metrics. Vested shares, if any, will be delivered to the reporting person in 3 to 5 business days from the date of vesting."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"This total includes 25,165 shares of time-based restricted stock units and 25,165 shares of performance-based restricted stock units."}],"balance_after":50330,"source":{"system":"sec-edgar","filing":"0001415889-24-008880","document":"form4-03212024_100323.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588924008880/form4-03212024_100323.xml","form_type":"4"}},{"id":1575796,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VICE CHAIRMAN"}}],"security":"Old Second Bancorp, Inc. 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Actual performance exceeded the target performance for the performance period."}],"balance_after":15924,"source":{"system":"sec-edgar","filing":"0001415889-24-008148","document":"form4-03152024_100335.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588924008148/form4-03152024_100335.xml","form_type":"4"}},{"id":1697424,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VICE CHAIRMAN"}}],"security":"Old Second Bancorp, Inc. 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Information herein was provided by the plan Trustee as of 12-31-23."}],"balance_after":5894,"source":{"system":"sec-edgar","filing":"0001415889-24-000064","document":"form4-01022024_100115.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588924000064/form4-01022024_100115.xml","form_type":"4"}},{"id":1771096,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VICE CHAIRMAN"}}],"security":"Old Second Bancorp, Inc. 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Information herein was provided by the Plan Trustee as of 9-30-23."}],"balance_after":5873,"source":{"system":"sec-edgar","filing":"0001415889-23-013695","document":"form4-10022023_061011.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588923013695/form4-10022023_061011.xml","form_type":"4"}},{"id":1840527,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VICE CHAIRMAN"}}],"security":"Old Second Bancorp, Inc. 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Information herein was provided by the Plan Trustee as of 6-30-23."}],"balance_after":5855,"source":{"system":"sec-edgar","filing":"0001415889-23-010549","document":"form4-07032023_070717.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588923010549/form4-07032023_070717.xml","form_type":"4"}},{"id":1930987,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VICE CHAIRMAN"}}],"security":"Old Second Bancorp, Inc. 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Information herein was provided by the Plan Trustee as of 3-31-23."}],"balance_after":5829,"source":{"system":"sec-edgar","filing":"0001415889-23-005986","document":"form4-04042023_070411.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588923005986/form4-04042023_070411.xml","form_type":"4"}},{"id":1977222,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VICE CHAIRMAN"}}],"security":"Restricted Stock Units","published_at":"2023-03-03T22:25:29.000Z","date":"2023-02-21","kind":"grant","acquired":true,"shares":16492,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of common stock. The reporting person was granted 16,492 restricted stock units on the date of grant, 8,246 of which are time-based restricted stock units that cliff vest on the third anniversary of the grant date, and 8,246 of which are performance-based restricted stock units that may vest and convert to shares within a range from 0% to 150% of the underlying performance-based restricted stock units originally awarded, depending on our compensation committee approved performance metrics. Vested shares, if any, will be delivered to the reporting person within 3 to 5 business days."}],"balance_after":55070,"source":{"system":"sec-edgar","filing":"0001415889-23-004174","document":"form4a-03032023_100302.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588923004174/form4a-03032023_100302.xml","form_type":"4/A","original_submission_date":"2023-02-21"}},{"id":1997650,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VICE CHAIRMAN"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2023-02-23T17:40:40.000Z","date":"2023-02-21","kind":"grant","acquired":true,"shares":16492,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"These shares represent Restricted Stock Unit granted 2-21-23 pursuant to the Old Second Bancorp, Inc. 2019 Equity Incentive Plan. These shares have a 3-year cliff vesting."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Included in this total are 6,983 shares held outright; 55,070 shares of Restricted Stock Units and 78,845.306 shares held with a broker."}],"balance_after":140898.306,"source":{"system":"sec-edgar","filing":"0001415889-23-003113","document":"form4-02232023_050229.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588923003113/form4-02232023_050229.xml","form_type":"4"}},{"id":1997649,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VICE CHAIRMAN"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2023-02-23T17:40:40.000Z","date":"2023-02-18","kind":"disposition_to_issuer","acquired":false,"shares":3351,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"These shares were disposed of to cover the tax liability from Restricted Stock Unit vesting."}],"balance_after":124406.306,"source":{"system":"sec-edgar","filing":"0001415889-23-003113","document":"form4-02232023_050229.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588923003113/form4-02232023_050229.xml","form_type":"4"}},{"id":2073689,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VICE CHAIRMAN"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2023-01-03T20:37:04.000Z","date":"2022-12-31","kind":"other","acquired":true,"shares":49,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"By 401-K"},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Of this total, 49 shares were allocated during the fourth quarter pursuant to the Old Second Bancorp Inc Employee Savings Plan and Trust. Information herein was provided by the Plan Trustee as of 12-31-22."}],"balance_after":5752,"source":{"system":"sec-edgar","filing":"0001415889-23-000026","document":"form4-01032023_080155.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588923000026/form4-01032023_080155.xml","form_type":"4"}},{"id":2082773,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VICE CHAIRMAN"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2022-12-19T14:52:43.000Z","date":"2022-12-16","kind":"purchase","acquired":true,"shares":900,"price":16.035,"value":14431.5,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 78,845.306 shares held by Mr. Collins solely at a broker; 29,623 shares of Restricted Stock Units and 19,289 shares of Performance Based Restricted Stock Units held by Mr. Collins."}],"balance_after":127757.306,"source":{"system":"sec-edgar","filing":"0001415889-22-012676","document":"form4-12192022_021234.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588922012676/form4-12192022_021234.xml","form_type":"4"}},{"id":2148264,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VICE CHAIRMAN"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2022-10-03T16:40:50.000Z","date":"2022-09-30","kind":"other","acquired":true,"shares":79,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"By 401-K"},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Of this total, 79 shares were allocated during the third quarter pursuant to the Old Second Bancorp Inc Employee Savings Plan and Trust. Information herein was provided by the Plan Trustee as of 9-30-22."}],"balance_after":5703,"source":{"system":"sec-edgar","filing":"0001415889-22-010058","document":"form4-10032022_091041.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588922010058/form4-10032022_091041.xml","form_type":"4"}},{"id":2156680,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VICE CHAIRMAN"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2022-09-19T19:10:08.000Z","date":"2022-09-16","kind":"purchase","acquired":true,"shares":1000,"price":13.35,"value":13350.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 19,289 shares of Performance-based Restricted Stock Units; 29,623 shares of Restricted Stock Units and 77,945 shares held with a broker."}],"balance_after":126857,"source":{"system":"sec-edgar","filing":"0001415889-22-009746","document":"form4-09192022_120900.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588922009746/form4-09192022_120900.xml","form_type":"4"}},{"id":2213402,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VICE CHAIRMAN"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2022-07-06T21:29:06.000Z","date":"2022-06-30","kind":"other","acquired":true,"shares":60,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"By 401-K"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"These shares were allocated during the second quarter pursuant to the Old Second Bancorp, Inc. Employee Savings Plan & Trust. Information herein was provided by the Plan Trustee as of 6-30-22."}],"balance_after":5624,"source":{"system":"sec-edgar","filing":"0001415889-22-007514","document":"form4-07062022_020753.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588922007514/form4-07062022_020753.xml","form_type":"4"}},{"id":2213401,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VICE CHAIRMAN"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2022-07-06T21:29:06.000Z","date":"2022-03-31","kind":"other","acquired":true,"shares":244,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"By 401-K"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"These shares were allocated during the first quarter pursuant to the Old Second Bancorp, Inc. Employee Savings Plan & Trust. Information herein was provided by the Plan Trustee as of 3-31-22."}],"balance_after":5564,"source":{"system":"sec-edgar","filing":"0001415889-22-007514","document":"form4-07062022_020753.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588922007514/form4-07062022_020753.xml","form_type":"4"}},{"id":2259071,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VICE CHAIRMAN"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2022-05-24T21:14:52.000Z","date":"2022-05-21","kind":"disposition_to_issuer","acquired":false,"shares":2987,"price":13.94,"value":41638.78,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 7,209 shares in Mr. Collins' name outright, 48,912 shares of Restricted Stock Units and 69,736.306 shares held with a broker."}],"balance_after":125857,"source":{"system":"sec-edgar","filing":"0001415889-22-005605","document":"form4-05242022_020537.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588922005605/form4-05242022_020537.xml","form_type":"4"}},{"id":2390418,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VICE CHAIRMAN"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2022-02-17T19:26:26.000Z","date":"2022-02-15","kind":"grant","acquired":true,"shares":17346,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Of this total, 8,673 shares are restricted stock units and 8,673 shares are performance based restricted stock units granted pursuant to the Old Second Long Term Incentive Plan. These shares have a three-year cliff vesting."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Included in this total are 50,435 shares of restricted stock units, 8,673 shares of performance based restricted stock units and 69,236.306 shares in Mr. Collins name in a broker account."}],"balance_after":128844,"source":{"system":"sec-edgar","filing":"0001415889-22-001488","document":"form4-02172022_110212.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588922001488/form4-02172022_110212.xml","form_type":"4"}},{"id":2452558,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VICE CHAIRMAN"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2022-01-04T19:23:22.000Z","date":"2021-12-31","kind":"grant","acquired":true,"shares":19,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"401-K"},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Of this total, 19 shares were allocated during the fourth quarter pursuant to the Old Second Bancorp, Inc. Employee Salary and Savings Plan. Information herein was provided by the Plan Trustee as of 12-31-21."}],"balance_after":5367,"source":{"system":"sec-edgar","filing":"0001415889-22-000153","document":"form4-01042022_110108.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588922000153/form4-01042022_110108.xml","form_type":"4"}},{"id":2489914,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VICE CHAIRMAN"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2021-12-02T16:58:14.000Z","date":"2021-12-01","kind":"grant","acquired":true,"shares":2120,"ownership":{"direct":false,"nature":"By IRA"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Received in exchange for 50 shares of West Suburban Bancorp, Inc. (\"West Suburban\") common stock in connection with the merger (the \"Merger\") of West Suburban with and into Old Second Bancorp, Inc. (\"Old Second\").  The exchange ratio in the Merger was 42.413 Old Second shares and $271.15 in cash for each share of West Suburban common stock, plus cash in lieu of fractional shares.  The closing price per share of West Suburban common stock on the OTC Pink Open Market on the day immediately preceding the effective date of the Merger (the last closing price available) was $801.00 per share, and the closing price per share of Old Second common stock on the effective date of the Merger was $12.35 per share."}],"balance_after":76768,"source":{"system":"sec-edgar","filing":"0001415889-21-005630","document":"form4-12022021_081206.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588921005630/form4-12022021_081206.xml","form_type":"4"}},{"id":2550593,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VICE CHAIRMAN"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2021-10-05T16:48:00.000Z","date":"2021-09-30","kind":"other","acquired":true,"shares":28,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"401-K"},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Of this total, 28 shares were allocated during the third quarter pursuant to the Old Second Bancorp, Inc. Employee Salary and Savings Plan. Information herein was provided by the Plan Trustee as of 9-30-21."}],"balance_after":5348,"source":{"system":"sec-edgar","filing":"0001415889-21-004736","document":"form4-10052021_091049.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588921004736/form4-10052021_091049.xml","form_type":"4"}},{"id":2563541,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VICE CHAIRMAN"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2021-09-21T21:28:01.000Z","date":"2021-09-20","kind":"purchase","acquired":true,"shares":500,"price":11.82,"value":5910.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 41,762 shares of Restricted Stock Units and 69,736.306 shares in Mr. Collins' name held with a broker."}],"balance_after":111498,"source":{"system":"sec-edgar","filing":"0001415889-21-004511","document":"form4-09212021_020954.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588921004511/form4-09212021_020954.xml","form_type":"4"}},{"id":2601464,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2021-08-17T13:56:49.000Z","date":"2021-08-13","kind":"purchase","acquired":true,"shares":4144,"price":12.0637,"value":49991.9728,"ownership":{"direct":false,"nature":"401-K"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"These shares were purchased through the Old Second Bancorp, Inc. Salary & Savings Plan on 8-13-21 with a settlement date of 8-17-21."}],"balance_after":5320,"source":{"system":"sec-edgar","filing":"0001179110-21-008222","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911021008222/edgar.xml","form_type":"4"}},{"id":2601463,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2021-08-17T13:56:49.000Z","date":"2021-08-13","kind":"purchase","acquired":true,"shares":1000,"price":11.765,"value":11765.0,"ownership":{"direct":false,"nature":"IRA"},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Included in this total are 41,000 shares in a ROTH IRA and 33,648.085 in a traditional IRA."}],"balance_after":74648.085,"source":{"system":"sec-edgar","filing":"0001179110-21-008222","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911021008222/edgar.xml","form_type":"4"}},{"id":2601462,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2021-08-17T13:56:49.000Z","date":"2021-08-13","kind":"purchase","acquired":true,"shares":1000,"price":11.968,"value":11968.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 41,762 shares of restricted stock units and 69,236.306 shares in Mr. Collins name in a broker account."}],"balance_after":110998.306,"source":{"system":"sec-edgar","filing":"0001179110-21-008222","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911021008222/edgar.xml","form_type":"4"}},{"id":2607778,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2021-08-11T20:17:50.000Z","date":"2021-08-09","kind":"purchase","acquired":true,"shares":1000,"price":11.4,"value":11400.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 41,762 shares of restricted stock units and 68,236.306 shares in Mr. Collins name in a broker account."}],"balance_after":109998.306,"source":{"system":"sec-edgar","filing":"0001179110-21-008118","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911021008118/edgar.xml","form_type":"4"}},{"id":2648973,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2021-07-01T20:06:56.000Z","date":"2021-06-30","kind":"grant","acquired":true,"shares":87,"ownership":{"direct":false,"nature":"401-K"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Does not apply."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Of this total, 87 shares were allocated during the second quarter pursuant to the Old Second Bancorp, Inc. Employee Savings Plan & Trust. Information herein was provided by the Plan Trustee as of 03-31-2106-30-21."}],"balance_after":1176,"source":{"system":"sec-edgar","filing":"0001179110-21-007240","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911021007240/edgar.xml","form_type":"4"}},{"id":2762824,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2021-04-02T20:56:52.000Z","date":"2021-03-31","kind":"grant","acquired":true,"shares":196,"ownership":{"direct":false,"nature":"401-K"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Does not apply."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Of this total, 196 shares were allocated during the first quarter pursuant to the Old Second Bancorp, Inc. Employee Savings Plan & Trust. Information herein was provided by the Plan Trustee as of 03-31-21."}],"balance_after":1089,"source":{"system":"sec-edgar","filing":"0001179110-21-004109","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911021004109/edgar.xml","form_type":"4"}},{"id":2801914,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Old Second Bancorp, Inc. 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Information herein was provided by the Plan Trustee as of 12-31-20."}],"balance_after":893,"source":{"system":"sec-edgar","filing":"0001179110-21-000114","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911021000114/edgar.xml","form_type":"4"}},{"id":3017521,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Old Second Bancorp, Inc. 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Information herein was provided by the Plan Trustee as of 09-30-20."}],"balance_after":892,"source":{"system":"sec-edgar","filing":"0001179110-20-010107","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911020010107/edgar.xml","form_type":"4"}},{"id":3094074,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Old Second Bancorp, Inc. 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Information herein was provided by the Plan Trustee as of 06-30-20."}],"balance_after":891,"source":{"system":"sec-edgar","filing":"0001179110-20-007830","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911020007830/edgar.xml","form_type":"4"}},{"id":3187989,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Old Second Bancorp, Inc. 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Information herein was provided by the Plan Trustee as of 03-31-20."}],"balance_after":890,"source":{"system":"sec-edgar","filing":"0001179110-20-004441","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911020004441/edgar.xml","form_type":"4"}},{"id":3198572,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Old Second Bancorpp, Inc. 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These shares have a 3-year cliff vesting."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Does not apply."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 33,530 shares of restricted stock units, 25,000 shares of Performance Based restricted stock units and 42,538.306 shares in Mr. Collins name in a broker account."}],"balance_after":101068.306,"source":{"system":"sec-edgar","filing":"0001179110-20-001802","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911020001802/edgar.xml","form_type":"4"}},{"id":3325455,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Old Second Bancorp, Inc. 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Information herein was provided by the Plan Trustee as of 12-31-19."}],"balance_after":889,"source":{"system":"sec-edgar","filing":"0001179110-20-000220","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911020000220/edgar.xml","form_type":"4"}},{"id":3385808,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Old Second Bancorp, Inc. 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Information herein was provided by the Plan Trustee as of 6-30-18."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Does not apply."}],"balance_after":461,"source":{"system":"sec-edgar","filing":"0001179110-18-009325","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911018009325/edgar.xml","form_type":"4"}},{"id":3961549,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Old Second Bancorp, Inc. 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These shares have a 3-year cliff vesting."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Does not apply."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 29,000 shares of restricted stock units, 25,000 shares of Performance Based restricted stock units and 35,602.306 shares in Mr.Collins name."}],"balance_after":89602.306,"source":{"system":"sec-edgar","filing":"0001179110-18-005776","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911018005776/edgar.xml","form_type":"4"}},{"id":4042309,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Old Second Bancorp, Inc. 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This plan has been terminated."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Included in this total are 40,000 shares in a ROTH IRA and 32,148.95 in a traditional IRA."}],"balance_after":72148.95,"source":{"system":"sec-edgar","filing":"0001179110-18-002578","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911018002578/edgar.xml","form_type":"4"}},{"id":4042308,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Old Second Bancorp, Inc. 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This plan has been terminated."}],"balance_after":56602.306,"source":{"system":"sec-edgar","filing":"0001179110-18-002578","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911018002578/edgar.xml","form_type":"4"}},{"id":4042307,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2018-02-22T17:05:09.000Z","date":"2018-02-20","kind":"grant","acquired":true,"shares":8000,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F5","text":"These shares represent Restricted Stock Units granted in 2018 under the Long Term Incentive Program. These shares have a 3-year cliff vesting."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"Does not apply."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 29,000 shares of restricted stock units and 35,602.306 shares in Mr.Collins name."}],"balance_after":64602.306,"source":{"system":"sec-edgar","filing":"0001179110-18-002578","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911018002578/edgar.xml","form_type":"4"}},{"id":4214181,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-09-08T21:30:09.000Z","date":"2017-09-08","kind":"purchase","acquired":true,"shares":2000,"price":10.77,"value":21540.0,"ownership":{"direct":false,"nature":"IRA"},"balance_after":71000,"source":{"system":"sec-edgar","filing":"0001179110-17-012155","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017012155/edgar.xml","form_type":"4"}},{"id":4374169,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-03-23T15:47:29.000Z","date":"2017-03-22","kind":"purchase","acquired":true,"shares":1000,"price":10.5,"value":10500.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 21,000 shares of restricted stock units and 36,600 shares in Mr.Collins name."}],"balance_after":57600,"source":{"system":"sec-edgar","filing":"0001179110-17-005101","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017005101/edgar.xml","form_type":"4"}},{"id":4433891,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-02-22T22:53:07.000Z","date":"2017-02-21","kind":"grant","acquired":true,"shares":5000,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"These shares represent Restricted Stock Units granted in 2017 under Old Second's Equity Award Program. These shares have a 3-year cliff vesting."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Included in this total are 21,000 shares of restricted stock units and 35,600 shares in Mr.Collins name."}],"balance_after":56600,"source":{"system":"sec-edgar","filing":"0001179110-17-002944","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017002944/edgar.xml","form_type":"4"}},{"id":4511653,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2016-12-28T15:41:42.000Z","date":"2016-12-27","kind":"purchase","acquired":true,"shares":1000,"price":11.42,"value":11420.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"These shares represent restricted stock units granted with a 3-yr vesting period."}],"balance_after":51600,"source":{"system":"sec-edgar","filing":"0001179110-16-033495","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911016033495/edgar.xml","form_type":"4"}},{"id":4571430,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":33495,"kind":"person","name":"COLLINS GARY S","position":1,"cik":"0001184766","reported_name":"COLLINS GARY S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2016-11-01T14:03:36.000Z","date":"2016-10-29","kind":"grant","acquired":true,"shares":16000,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"These shares represent restricted stock units granted with a 3-yr vesting period."}],"balance_after":16000,"source":{"system":"sec-edgar","filing":"0001179110-16-031037","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911016031037/edgar.xml","form_type":"4"}}]}