{"transactions":[{"id":1823231,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2023-07-26T15:33:56.000Z","date":"2023-07-25","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":9930,"price":15.8,"value":156894.0,"ownership":{"direct":true},"balance_after":50355,"source":{"system":"sec-edgar","filing":"0001415889-23-011470","document":"form4-07262023_030752.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588923011470/form4-07262023_030752.xml","form_type":"4"}},{"id":1824503,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2023-07-24T15:37:45.000Z","date":"2023-07-20","kind":"exercise","planned":false,"acquired":false,"shares":9930,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":0,"source":{"system":"sec-edgar","filing":"0001415889-23-011400","document":"form4-07242023_030741.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588923011400/form4-07242023_030741.xml","form_type":"4"}},{"id":1824502,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2023-07-24T15:37:45.000Z","date":"2023-07-20","kind":"exercise","planned":false,"acquired":true,"shares":9930,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted stock units convert into common stock on a one-for-one basis."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Included in this total are 9,930 shares of restricted stock units that have converted into common stock."}],"balance_after":60285,"source":{"system":"sec-edgar","filing":"0001415889-23-011400","document":"form4-07242023_030741.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588923011400/form4-07242023_030741.xml","form_type":"4"}},{"id":1977225,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2023-03-03T22:34:58.000Z","date":"2023-03-02","kind":"gift","acquired":false,"shares":8053,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction involved a gift of securities by the reporting person to his daughter, who does not share the reporting person's household."}],"balance_after":50355,"source":{"system":"sec-edgar","filing":"0001415889-23-004181","document":"form4-03032023_100344.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588923004181/form4-03032023_100344.xml","form_type":"4"}},{"id":1997667,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2023-02-23T19:35:26.000Z","date":"2023-02-21","kind":"grant","acquired":true,"shares":3077,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"These shares represent Restricted Stock Units 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":"F2","text":"Included in this total are 1,500 shares held outright; 9,930 shares of Restricted Stock Units and 56,908 shares held in Trust."}],"balance_after":68338,"source":{"system":"sec-edgar","filing":"0001415889-23-003148","document":"form4-02232023_070213.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588923003148/form4-02232023_070213.xml","form_type":"4"}},{"id":2090575,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2022-12-12T22:24:31.000Z","date":"2022-12-09","kind":"gift","acquired":false,"shares":2000,"price":16.87,"value":33740.0,"ownership":{"direct":false,"nature":"as Trustee for self Trust"},"balance_after":55408,"source":{"system":"sec-edgar","filing":"0001415889-22-012424","document":"form4-12122022_101210.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588922012424/form4-12122022_101210.xml","form_type":"4"}},{"id":2234980,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2022-06-13T17:53:03.000Z","date":"2022-06-13","kind":"disposition_to_issuer","acquired":false,"shares":2,"price":14.26,"value":28.52,"ownership":{"direct":false,"nature":"as Trustee for self Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"These shares represent the final transaction of the 10b5-1 Trading Plan."}],"balance_after":57408,"source":{"system":"sec-edgar","filing":"0001415889-22-006473","document":"form4-06132022_100655.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588922006473/form4-06132022_100655.xml","form_type":"4"}},{"id":2278571,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2022-05-09T16:48:28.000Z","date":"2022-05-09","kind":"disposition_to_issuer","acquired":false,"shares":4557,"price":14.03,"value":63934.71,"ownership":{"direct":false,"nature":"as Trustee for self Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction is part of a 10b5-1 plan."}],"balance_after":57410,"source":{"system":"sec-edgar","filing":"0001415889-22-004757","document":"form4-05092022_090519.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588922004757/form4-05092022_090519.xml","form_type":"4"}},{"id":2299821,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2022-04-11T20:21:20.000Z","date":"2022-04-11","kind":"sale","acquired":false,"shares":4557,"price":14.197,"value":64695.729,"ownership":{"direct":false,"nature":"as Trustee for self Trust"},"balance_after":61967,"source":{"system":"sec-edgar","filing":"0001415889-22-003988","document":"form4-04112022_010408.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588922003988/form4-04112022_010408.xml","form_type":"4"}},{"id":2336718,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2022-03-14T19:43:23.000Z","date":"2022-03-14","kind":"sale","acquired":false,"shares":4557,"price":14.46,"value":65894.22,"ownership":{"direct":false,"nature":"as Trustee for self Trust"},"balance_after":66524,"source":{"system":"sec-edgar","filing":"0001415889-22-002921","document":"form4-03142022_120308.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588922002921/form4-03142022_120308.xml","form_type":"4"}},{"id":2390436,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2022-02-17T19:38:18.000Z","date":"2022-02-15","kind":"grant","acquired":true,"shares":3080,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"These represent restricted stock units granted pursuant to the Old second Bancorp, Inc. 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 71,081 shares held in Trust and 9,853 shares of restricted stock units."}],"balance_after":80934,"source":{"system":"sec-edgar","filing":"0001415889-22-001500","document":"form4-02172022_110205.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588922001500/form4-02172022_110205.xml","form_type":"4"}},{"id":2399805,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2022-02-14T20:58:08.000Z","date":"2022-02-14","kind":"sale","acquired":false,"shares":4557,"price":14.31,"value":65210.67,"ownership":{"direct":false,"nature":"as Trustee for self Trust"},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"This total includes 1,500 shares that were inadvertently not reported in a previous filing."}],"balance_after":71081,"source":{"system":"sec-edgar","filing":"0001415889-22-001273","document":"form4-02142022_120254.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588922001273/form4-02142022_120254.xml","form_type":"4"}},{"id":2439422,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2022-01-10T18:06:06.000Z","date":"2022-01-10","kind":"sale","acquired":false,"shares":4557,"price":13.44,"value":61246.08,"ownership":{"direct":false,"nature":"as Trustee for self Trust"},"balance_after":74138,"source":{"system":"sec-edgar","filing":"0001415889-22-000466","document":"form4-01102022_100158.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588922000466/form4-01102022_100158.xml","form_type":"4"}},{"id":2463260,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2021-12-21T20:57:54.000Z","date":"2021-12-20","kind":"gift","acquired":false,"shares":3000,"price":12.35,"value":37050.0,"ownership":{"direct":false,"nature":"as Trustee for self Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"These shares were gifted to Mr. Skoglund's three children in equal increments."}],"balance_after":78695,"source":{"system":"sec-edgar","filing":"0001415889-21-006151","document":"form4-12212021_121244.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588921006151/form4-12212021_121244.xml","form_type":"4"}},{"id":2522192,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2021-11-08T21:05:03.000Z","date":"2021-11-08","kind":"sale","acquired":false,"shares":4557,"price":14.01,"value":63843.57,"ownership":{"direct":false,"nature":"as Trustee for self Trust"},"balance_after":81695,"source":{"system":"sec-edgar","filing":"0001415889-21-005097","document":"form4-11082021_011156.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588921005097/form4-11082021_011156.xml","form_type":"4"}},{"id":2801913,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairman"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2021-03-09T22:43:25.000Z","date":"2021-03-08","kind":"tax_withholding","acquired":false,"shares":1579,"price":13.78,"value":21758.62,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 6,773 shares of Restricted Stock Units and 3,421 shares in Mr. Skoglund's name alone."}],"balance_after":10194,"source":{"system":"sec-edgar","filing":"0001179110-21-003141","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911021003141/edgar.xml","form_type":"4"}},{"id":2834221,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairman"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2021-02-25T22:14:30.000Z","date":"2021-02-25","kind":"sale","acquired":false,"shares":6313,"price":11.95,"value":75440.35,"ownership":{"direct":false,"nature":"as Trustee for self Trust"},"balance_after":83018,"source":{"system":"sec-edgar","filing":"0001179110-21-002280","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911021002280/edgar.xml","form_type":"4"}},{"id":2834220,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairman"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2021-02-25T22:14:30.000Z","date":"2021-02-25","kind":"sale","acquired":false,"shares":100,"price":11.96,"value":1196.0,"ownership":{"direct":false,"nature":"as Trustee for self Trust"},"balance_after":82918,"source":{"system":"sec-edgar","filing":"0001179110-21-002280","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911021002280/edgar.xml","form_type":"4"}},{"id":2834219,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairman"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2021-02-25T22:14:30.000Z","date":"2021-02-25","kind":"sale","acquired":false,"shares":87,"price":11.97,"value":1041.39,"ownership":{"direct":false,"nature":"as Trustee for self Trust"},"balance_after":82831,"source":{"system":"sec-edgar","filing":"0001179110-21-002280","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911021002280/edgar.xml","form_type":"4"}},{"id":2852599,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairman"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2021-02-18T23:53:06.000Z","date":"2021-02-16","kind":"grant","acquired":true,"shares":3773,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"These shares represent Restricted Stock Units granted pursuant to the 2019 Long Term Incentive Plan. These shares have a 3-year cliff vesting."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 5,000 shares of performance based restricted stock units and 8,273 shares of restricted sock units."}],"balance_after":13273,"source":{"system":"sec-edgar","filing":"0001179110-21-001931","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911021001931/edgar.xml","form_type":"4"}},{"id":2941275,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairman"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2020-12-17T22:21:27.000Z","date":"2020-12-16","kind":"gift","acquired":false,"shares":3000,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"as Trustee for self Trust"},"balance_after":89331,"source":{"system":"sec-edgar","filing":"0001179110-20-012066","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911020012066/edgar.xml","form_type":"4"}},{"id":3265362,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairman"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2020-02-19T20:12:26.000Z","date":"2020-02-18","kind":"grant","acquired":true,"shares":1500,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"These shares represent Restricted Stock Units granted pursuant to the 2019 Long Term Equity Incentive Plan. These shares have a 3-year cliff vesting."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Does not apply."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Included in these shares are 9,500 shares of restricted stock units and 5,000 shares of performance based restricted stock units."}],"balance_after":14500,"source":{"system":"sec-edgar","filing":"0001179110-20-001810","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911020001810/edgar.xml","form_type":"4"}},{"id":3345992,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairman"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2019-12-11T15:11:50.000Z","date":"2019-12-09","kind":"gift","acquired":false,"shares":2000,"price":12.44,"value":24880.0,"ownership":{"direct":false,"nature":"as Trustee"},"balance_after":87331,"source":{"system":"sec-edgar","filing":"0001179110-19-012614","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911019012614/edgar.xml","form_type":"4"}},{"id":3453933,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairman"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2019-07-30T21:14:56.000Z","date":"2019-07-29","kind":"sale","acquired":false,"shares":1502,"price":13.29,"value":19961.58,"ownership":{"direct":false,"nature":"as Trustee"},"balance_after":91229,"source":{"system":"sec-edgar","filing":"0001179110-19-008900","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911019008900/edgar.xml","form_type":"4"}},{"id":3453932,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairman"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2019-07-30T21:14:56.000Z","date":"2019-07-30","kind":"sale","acquired":false,"shares":1898,"price":13.24,"value":25129.52,"ownership":{"direct":false,"nature":"as Trustee"},"balance_after":89331,"source":{"system":"sec-edgar","filing":"0001179110-19-008900","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911019008900/edgar.xml","form_type":"4"}},{"id":3503680,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairman"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2019-06-04T16:33:42.000Z","date":"2019-06-03","kind":"grant","acquired":true,"shares":1500,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"These shares represent Restricted Stock Units granted pursuant to the 2019 Long Term Equity Incentive Plan. These shares have a 3-year cliff vesting."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Does not apply."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"These shares represent only restricted stock units in Mr. Skoglunds' name alone."}],"balance_after":13000,"source":{"system":"sec-edgar","filing":"0001179110-19-007085","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911019007085/edgar.xml","form_type":"4"}},{"id":3584018,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairman"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2019-03-21T22:09:05.000Z","date":"2019-03-21","kind":"sale","acquired":false,"shares":500,"price":13.37,"value":6685.0,"ownership":{"direct":false,"nature":"as Trustee"},"balance_after":93831,"source":{"system":"sec-edgar","filing":"0001179110-19-004152","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911019004152/edgar.xml","form_type":"4"}},{"id":3584017,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairman"}}],"security":"Old Second Bancor, Inc. Common Stock","published_at":"2019-03-21T22:09:05.000Z","date":"2019-03-21","kind":"sale","acquired":false,"shares":500,"price":13.22,"value":6610.0,"ownership":{"direct":false,"nature":"as Trustee"},"balance_after":93331,"source":{"system":"sec-edgar","filing":"0001179110-19-004152","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911019004152/edgar.xml","form_type":"4"}},{"id":3584016,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairman"}}],"security":"Old Second Bancop, Inc. Common Stock","published_at":"2019-03-21T22:09:05.000Z","date":"2019-03-21","kind":"sale","acquired":false,"shares":300,"price":13.23,"value":3969.0,"ownership":{"direct":false,"nature":"as Trustee"},"balance_after":93031,"source":{"system":"sec-edgar","filing":"0001179110-19-004152","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911019004152/edgar.xml","form_type":"4"}},{"id":3584015,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairman"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2019-03-21T22:09:05.000Z","date":"2019-03-21","kind":"sale","acquired":false,"shares":300,"price":13.2,"value":3960.0,"ownership":{"direct":false,"nature":"as Trustee"},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"This total represents current holdings after the disposition of shares."}],"balance_after":92731,"source":{"system":"sec-edgar","filing":"0001179110-19-004152","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911019004152/edgar.xml","form_type":"4"}},{"id":3961552,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairman"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2018-04-18T21:48:02.000Z","date":"2018-04-17","kind":"grant","acquired":true,"shares":5000,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"These shares represent Performance Based 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":"F3","text":"Does not apply."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 532 shares in Mr. Skoglund's name alone, 11,500 shares of restricted stock units and 5,000 shares of Performance Based restricted stock units."}],"balance_after":17032,"source":{"system":"sec-edgar","filing":"0001179110-18-005780","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911018005780/edgar.xml","form_type":"4"}},{"id":3995603,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairman"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2018-03-15T19:03:05.000Z","date":"2018-03-15","kind":"sale","acquired":false,"shares":2500,"price":14.5,"value":36250.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 532 shares in Mr. Skoglund's name alone; 11,500 shares of restricted stock units and 28,465 shares held by Mr. Skoglund as Trustee in a brokerage account."}],"balance_after":40487,"source":{"system":"sec-edgar","filing":"0001179110-18-004371","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911018004371/edgar.xml","form_type":"4"}},{"id":4004515,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairman"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2018-03-09T21:52:59.000Z","date":"2018-03-09","kind":"sale","acquired":false,"shares":2000,"price":14.5,"value":29000.0,"ownership":{"direct":true},"balance_after":46705,"source":{"system":"sec-edgar","filing":"0001179110-18-003975","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911018003975/edgar.xml","form_type":"4"}},{"id":4004514,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairman"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2018-03-09T21:52:59.000Z","date":"2018-03-09","kind":"sale","acquired":false,"shares":1000,"price":14.55,"value":14550.0,"ownership":{"direct":true},"balance_after":45705,"source":{"system":"sec-edgar","filing":"0001179110-18-003975","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911018003975/edgar.xml","form_type":"4"}},{"id":4004513,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairman"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2018-03-09T21:52:59.000Z","date":"2018-03-09","kind":"sale","acquired":false,"shares":500,"price":14.6,"value":7300.0,"ownership":{"direct":true},"balance_after":45205,"source":{"system":"sec-edgar","filing":"0001179110-18-003975","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911018003975/edgar.xml","form_type":"4"}},{"id":4004512,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairman"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2018-03-09T21:52:59.000Z","date":"2018-03-09","kind":"sale","acquired":false,"shares":500,"price":14.56,"value":7280.0,"ownership":{"direct":true},"balance_after":44705,"source":{"system":"sec-edgar","filing":"0001179110-18-003975","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911018003975/edgar.xml","form_type":"4"}},{"id":4004511,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairman"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2018-03-09T21:52:59.000Z","date":"2018-03-09","kind":"sale","acquired":false,"shares":708,"price":14.55,"value":10301.4,"ownership":{"direct":true},"balance_after":43997,"source":{"system":"sec-edgar","filing":"0001179110-18-003975","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911018003975/edgar.xml","form_type":"4"}},{"id":4004510,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairman"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2018-03-09T21:52:59.000Z","date":"2018-03-09","kind":"sale","acquired":false,"shares":1000,"price":14.65,"value":14650.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 3032 shares in Mr. Skoglund's name alone; 11,500 shares of restricted stock units and 28,465 shares held by Mr. Skoglund as Trustee in a brokerage account."}],"balance_after":42997,"source":{"system":"sec-edgar","filing":"0001179110-18-003975","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911018003975/edgar.xml","form_type":"4"}},{"id":4006896,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2018-03-09T00:26:28.000Z","date":"2017-03-08","kind":"disposition_to_issuer","acquired":false,"shares":2500,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"These shares are restricted stock units that vested and were inadvertently reported as an acquisition."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Does not apply."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 3032 shares in Mr. Skoglund's name alone; 11,500 shares of restricted stock units and 34,173 shares held by William Skoglund as Trustee of the William Skoglund Trust in a brokerage account."}],"balance_after":48705,"source":{"system":"sec-edgar","filing":"0001179110-18-003899","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911018003899/edgar.xml","form_type":"4/A","original_submission_date":"2018-03-07"}},{"id":4006893,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO"}}],"security":"Old Second Bancor, Inc. Common Stock","published_at":"2018-03-08T21:41:19.000Z","date":"2018-03-07","kind":"sale","acquired":false,"shares":1000,"price":14.2,"value":14200.0,"ownership":{"direct":true},"balance_after":51992,"source":{"system":"sec-edgar","filing":"0001179110-18-003873","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911018003873/edgar.xml","form_type":"4"}},{"id":4006892,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2018-03-08T21:41:19.000Z","date":"2018-03-07","kind":"sale","acquired":false,"shares":1000,"price":14.3,"value":14300.0,"ownership":{"direct":true},"balance_after":50992,"source":{"system":"sec-edgar","filing":"0001179110-18-003873","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911018003873/edgar.xml","form_type":"4"}},{"id":4006891,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO"}}],"security":"Old Second Bancorp, Inc.","published_at":"2018-03-08T21:41:19.000Z","date":"2018-03-07","kind":"sale","acquired":false,"shares":287,"price":14.35,"value":4118.45,"ownership":{"direct":true},"balance_after":50705,"source":{"system":"sec-edgar","filing":"0001179110-18-003873","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911018003873/edgar.xml","form_type":"4"}},{"id":4006890,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2018-03-08T21:41:19.000Z","date":"2018-03-07","kind":"grant","acquired":true,"shares":2500,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Does not apply."}],"balance_after":53205,"source":{"system":"sec-edgar","filing":"0001179110-18-003873","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911018003873/edgar.xml","form_type":"4"}},{"id":4006889,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO"}}],"security":"Old Second Bancorp, Inc.","published_at":"2018-03-08T21:41:19.000Z","date":"2018-03-08","kind":"sale","acquired":false,"shares":1000,"price":14.55,"value":14550.0,"ownership":{"direct":true},"balance_after":52205,"source":{"system":"sec-edgar","filing":"0001179110-18-003873","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911018003873/edgar.xml","form_type":"4"}},{"id":4006888,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2018-03-08T21:41:19.000Z","date":"2018-03-08","kind":"sale","acquired":false,"shares":1000,"price":14.6,"value":14600.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 532 shares in Mr. Skoglund's name alone; 14,000 shares of restricted stock units and 36,673 shares held by William Skoglund as Trustee of the William Skoglund Trust in a brokerage account."}],"balance_after":51205,"source":{"system":"sec-edgar","filing":"0001179110-18-003873","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911018003873/edgar.xml","form_type":"4"}},{"id":4022438,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2018-03-02T22:47:22.000Z","date":"2018-03-01","kind":"sale","acquired":false,"shares":5,"price":14.15,"value":70.75,"ownership":{"direct":true},"balance_after":53992,"source":{"system":"sec-edgar","filing":"0001179110-18-003364","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911018003364/edgar.xml","form_type":"4"}},{"id":4022437,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO"}}],"security":"Old Second Bancor, Inc. Common Stock","published_at":"2018-03-02T22:47:22.000Z","date":"2018-03-02","kind":"sale","acquired":false,"shares":1000,"price":14.15,"value":14150.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 532 shares in Mr. Skoglund's name alone; 14,000 shares of restricted stock units and 38,460 shares held by William Skoglund as Trustee of the William Skoglund Trust in a brokerage account."}],"balance_after":52992,"source":{"system":"sec-edgar","filing":"0001179110-18-003364","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911018003364/edgar.xml","form_type":"4"}},{"id":4032045,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2018-02-27T23:11:06.000Z","date":"2018-02-26","kind":"disposition_to_issuer","acquired":false,"shares":4000,"price":14.05,"value":56200.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 532 shares in Mr. Skoglund's name alone; 14,000 shares of restricted stock units and 39,455 shares held by William Skoglund as Trustee of the William Skoglund Trust in a brokerage account."}],"balance_after":53987,"source":{"system":"sec-edgar","filing":"0001179110-18-002987","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911018002987/edgar.xml","form_type":"4"}},{"id":4042302,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2018-02-22T17:03:21.000Z","date":"2018-02-20","kind":"grant","acquired":true,"shares":1500,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","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":"F2","text":"Does not apply."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 532 shares in Mr. Skoglund's name alone; 14,000 shares of restricted stock units and 43,455 shares held by William Skoglund as Trustee of the William Skoglund Trust in a brokerage account."}],"balance_after":57987,"source":{"system":"sec-edgar","filing":"0001179110-18-002572","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911018002572/edgar.xml","form_type":"4"}},{"id":4204479,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-09-21T14:35:52.000Z","date":"2017-09-20","kind":"sale","acquired":false,"shares":550,"price":12.1,"value":6655.0,"ownership":{"direct":true},"balance_after":56637,"source":{"system":"sec-edgar","filing":"0001179110-17-012557","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017012557/edgar.xml","form_type":"4"}},{"id":4204478,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-09-21T14:35:52.000Z","date":"2017-09-20","kind":"sale","acquired":false,"shares":150,"price":12.25,"value":1837.5,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 532 shares in Mr. Skoglund's name alone; 12,500 shares of restricted stock units and 43,455 shares held by William Skoglund as Trustee of the William Skoglund Trust in a brokerage account."}],"balance_after":56487,"source":{"system":"sec-edgar","filing":"0001179110-17-012557","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017012557/edgar.xml","form_type":"4"}},{"id":4205202,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-09-20T21:59:43.000Z","date":"2017-09-19","kind":"sale","acquired":false,"shares":3500,"price":12.15,"value":42525.0,"ownership":{"direct":true},"balance_after":59137,"source":{"system":"sec-edgar","filing":"0001179110-17-012547","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017012547/edgar.xml","form_type":"4"}},{"id":4205201,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-09-20T21:59:43.000Z","date":"2017-09-19","kind":"sale","acquired":false,"shares":1000,"price":12.1525,"value":12152.5,"ownership":{"direct":true},"balance_after":58137,"source":{"system":"sec-edgar","filing":"0001179110-17-012547","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017012547/edgar.xml","form_type":"4"}},{"id":4205200,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-09-20T21:59:43.000Z","date":"2017-09-19","kind":"sale","acquired":false,"shares":350,"price":12.1524,"value":4253.34,"ownership":{"direct":true},"balance_after":57787,"source":{"system":"sec-edgar","filing":"0001179110-17-012547","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017012547/edgar.xml","form_type":"4"}},{"id":4205199,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-09-20T21:59:43.000Z","date":"2017-09-19","kind":"sale","acquired":false,"shares":300,"price":12.105,"value":3631.5,"ownership":{"direct":true},"balance_after":57487,"source":{"system":"sec-edgar","filing":"0001179110-17-012547","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017012547/edgar.xml","form_type":"4"}},{"id":4205198,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-09-20T21:59:43.000Z","date":"2017-09-19","kind":"sale","acquired":false,"shares":300,"price":12.1,"value":3630.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 532 shares in Mr. Skoglund's name alone; 12,500 shares of restricted stock units and 44,155 shares held by William Skoglund as Trustee of the William Skoglund Trust in a brokerage account."}],"balance_after":57187,"source":{"system":"sec-edgar","filing":"0001179110-17-012547","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017012547/edgar.xml","form_type":"4"}},{"id":4206599,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-09-19T21:42:00.000Z","date":"2017-09-18","kind":"sale","acquired":false,"shares":1050,"price":12.1,"value":12705.0,"ownership":{"direct":true},"balance_after":65437,"source":{"system":"sec-edgar","filing":"0001179110-17-012459","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017012459/edgar.xml","form_type":"4"}},{"id":4206598,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-09-19T21:42:00.000Z","date":"2017-09-18","kind":"sale","acquired":false,"shares":350,"price":12.11,"value":4238.5,"ownership":{"direct":true},"balance_after":65087,"source":{"system":"sec-edgar","filing":"0001179110-17-012459","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017012459/edgar.xml","form_type":"4"}},{"id":4206597,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-09-19T21:42:00.000Z","date":"2017-09-18","kind":"sale","acquired":false,"shares":2450,"price":12.15,"value":29767.5,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 532 shares in Mr. Skoglund's name alone; 12,500 shares of restricted stock units and 49,605 shares held by William Skoglund as Trustee of the William Skoglund Trust in a brokerage account."}],"balance_after":62637,"source":{"system":"sec-edgar","filing":"0001179110-17-012459","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017012459/edgar.xml","form_type":"4"}},{"id":4434016,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-02-22T22:55:03.000Z","date":"2017-02-21","kind":"grant","acquired":true,"shares":5000,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","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."}],"balance_after":74487,"source":{"system":"sec-edgar","filing":"0001179110-17-002949","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017002949/edgar.xml","form_type":"4"}},{"id":4434015,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-02-22T22:55:03.000Z","date":"2017-02-21","kind":"sale","acquired":false,"shares":100,"price":10.9,"value":1090.0,"ownership":{"direct":true},"balance_after":74387,"source":{"system":"sec-edgar","filing":"0001179110-17-002949","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017002949/edgar.xml","form_type":"4"}},{"id":4434014,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-02-22T22:55:03.000Z","date":"2017-02-21","kind":"sale","acquired":false,"shares":6900,"price":10.85,"value":74865.0,"ownership":{"direct":true},"balance_after":67487,"source":{"system":"sec-edgar","filing":"0001179110-17-002949","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017002949/edgar.xml","form_type":"4"}},{"id":4434013,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-02-22T22:55:03.000Z","date":"2017-02-22","kind":"sale","acquired":false,"shares":1,"price":10.9,"value":10.9,"ownership":{"direct":true},"balance_after":67486,"source":{"system":"sec-edgar","filing":"0001179110-17-002949","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017002949/edgar.xml","form_type":"4"}},{"id":4434012,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":111141,"kind":"person","name":"SKOGLUND WILLIAM B","position":1,"cik":"0001191051","reported_name":"SKOGLUND WILLIAM B","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-02-22T22:55:03.000Z","date":"2017-02-22","kind":"sale","acquired":false,"shares":999,"price":10.8,"value":10789.2,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 532 shares in Mr. Skoglund's name alone; 12,500 shares of restricted stock units and 53,455 shares held by William Skoglund as Trustee of the William Skoglund Trust in a brokerage account."}],"balance_after":66487,"source":{"system":"sec-edgar","filing":"0001179110-17-002949","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017002949/edgar.xml","form_type":"4"}}]}