{"transactions":[{"id":937937,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2026-01-16T18:54:33.000Z","date":"2026-01-15","kind":"sale","planned":false,"acquired":false,"shares":1865,"price":20.96,"value":39090.4,"ownership":{"direct":false,"nature":"IRA"},"balance_after":144892,"source":{"system":"sec-edgar","filing":"0001424453-26-000002","document":"form4-01162026_060129.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/357173/000142445326000002/form4-01162026_060129.xml","form_type":"4"}},{"id":937936,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2026-01-16T18:54:33.000Z","date":"2026-01-15","kind":"sale","planned":false,"acquired":false,"shares":2897,"price":20.941,"value":60666.077,"ownership":{"direct":false,"nature":"IRA"},"balance_after":146757,"source":{"system":"sec-edgar","filing":"0001424453-26-000002","document":"form4-01162026_060129.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000142445326000002/form4-01162026_060129.xml","form_type":"4"}},{"id":976993,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2025-12-09T17:30:17.000Z","date":"2025-12-09","kind":"sale","planned":false,"acquired":false,"shares":12500,"price":20,"value":250000.0,"ownership":{"direct":false,"nature":"IRA"},"balance_after":149654,"source":{"system":"sec-edgar","filing":"0001424453-25-000006","document":"form4-12092025_051213.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000142445325000006/form4-12092025_051213.xml","form_type":"4"}},{"id":988060,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2025-11-26T21:57:37.000Z","date":"2025-09-14","kind":"other","planned":false,"acquired":false,"shares":10551,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":0,"source":{"system":"sec-edgar","filing":"0001424453-25-000004","document":"form4-11262025_091133.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/357173/000142445325000004/form4-11262025_091133.xml","form_type":"4"}},{"id":988059,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2025-11-26T21:57:37.000Z","date":"2025-11-26","kind":"sale","planned":false,"acquired":false,"shares":13150,"price":19.0107,"value":249990.705,"ownership":{"direct":false,"nature":"IRA"},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 153,862 shares in a ROTH IRA and 8,292 shares in a traditional IRA."}],"balance_after":162154,"source":{"system":"sec-edgar","filing":"0001424453-25-000004","document":"form4-11262025_091133.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000142445325000004/form4-11262025_091133.xml","form_type":"4"}},{"id":1254382,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2025-02-21T21:05:08.000Z","date":"2025-02-19","kind":"grant","planned":false,"acquired":true,"shares":3190,"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 3,190 restricted stock units on the date of the grant. These shares are time-based restricted stock units that vest on the third anniversary of the grant date."}],"balance_after":10551,"source":{"system":"sec-edgar","filing":"0001415889-25-005043","document":"form4-02212025_090200.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588925005043/form4-02212025_090200.xml","form_type":"4"}},{"id":1370253,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2024-11-12T18:36:14.000Z","date":"2024-11-06","kind":"sale","planned":false,"acquired":false,"shares":13888,"price":18.2673,"value":253696.2624,"ownership":{"direct":false,"nature":"IRA"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $18.2107 to $18.31, inclusive. 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 this footnote."}],"balance_after":175304,"source":{"system":"sec-edgar","filing":"0001415889-24-026569","document":"form4-11122024_061110.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588924026569/form4-11122024_061110.xml","form_type":"4"}},{"id":1450167,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2024-07-23T13:03:00.000Z","date":"2024-07-22","kind":"sale","planned":false,"acquired":false,"shares":30585,"price":16.2177,"value":496018.3545,"ownership":{"direct":false,"nature":"IRA"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $16.08 to $16.36, inclusive. 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 in the ranges set forth in this footnote."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"These shares represent 180,890 shares in a Roth IRA and 8,292 shares in a traditional IRA in Mr. Ladowicz' name."}],"balance_after":189192,"source":{"system":"sec-edgar","filing":"0001415889-24-019918","document":"form4-07232024_010756.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588924019918/form4-07232024_010756.xml","form_type":"4"}},{"id":1627113,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2024-02-22T22:27:10.000Z","date":"2024-02-20","kind":"grant","planned":false,"acquired":true,"shares":4284,"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 4,284 restricted stock units on the date of the grant. These shares are time-based restricted stock units that vest on the third anniversary of the grant date."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Included in this total are 22,490 shares held outright and 10,441 shares of Restricted Stock Units."}],"balance_after":32931,"source":{"system":"sec-edgar","filing":"0001415889-24-004871","document":"form4-02222024_100251.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588924004871/form4-02222024_100251.xml","form_type":"4"}},{"id":1997658,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2023-02-23T18:59:57.000Z","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 18,717 shares held outright; 9,930 shares of Restricted Stock Units and 217,777 shares held in Trust."}],"balance_after":248424,"source":{"system":"sec-edgar","filing":"0001415889-23-003139","document":"form4-02232023_060247.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588923003139/form4-02232023_060247.xml","form_type":"4"}},{"id":2390432,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2022-02-17T19:35:44.000Z","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 15,717 shares held in a Trust solely, 9,853 shares of restricted stock units and 219,777 shares held in a joint Trust."}],"balance_after":245347,"source":{"system":"sec-edgar","filing":"0001415889-22-001497","document":"form4-02172022_110234.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588922001497/form4-02172022_110234.xml","form_type":"4"}},{"id":2801912,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2021-03-09T22:42:38.000Z","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 15,717 shares in Mr. Ladowicz' name outright and 6,773 shares of restricted stock units in Mr. Ladowicz' name."}],"balance_after":22490,"source":{"system":"sec-edgar","filing":"0001179110-21-003140","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911021003140/edgar.xml","form_type":"4"}},{"id":2801911,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2021-03-09T22:42:38.000Z","date":"2021-03-08","kind":"sale","acquired":false,"shares":14500,"price":13.76,"value":199520.0,"ownership":{"direct":false,"nature":"IRA"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price listed in column 4 is a weighted price from multiple transactions at prices ranging from $13.75 to $13.845."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"These shares represent 14,427 shares in a traditional IRA and 205,350 shares in a Roth IRA, both in Mr. Ladowicz's name."}],"balance_after":219777,"source":{"system":"sec-edgar","filing":"0001179110-21-003140","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911021003140/edgar.xml","form_type":"4"}},{"id":2852600,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2021-02-18T23:53:37.000Z","date":"2021-02-16","kind":"grant","acquired":true,"shares":3773,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","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 10,796 shares in Mr. Ladowicz' name outright, 8,273 shares of restricted stock units and 5,000 shares of Performance Based restricted stock units in Mr. Ladowicz' name."}],"balance_after":24069,"source":{"system":"sec-edgar","filing":"0001179110-21-001932","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911021001932/edgar.xml","form_type":"4"}},{"id":2935525,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2020-12-22T20:19:08.000Z","date":"2020-12-21","kind":"sale","acquired":false,"shares":2500,"price":9.74,"value":24350.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 10,796 shares in Mr. Ladowicz' name outright, 4,500 shares of restricted stock units and 5,000 shares of Performance Based restricted stock units in Mr. Ladowicz' name."}],"balance_after":20296,"source":{"system":"sec-edgar","filing":"0001179110-20-012173","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911020012173/edgar.xml","form_type":"4"}},{"id":2947693,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2020-12-14T15:30:21.000Z","date":"2020-12-10","kind":"sale","acquired":false,"shares":350,"price":10.35,"value":3622.5,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 13,296 shares in Mr. Ladowicz' name outright, 4,500 shares of restricted stock units and 5,000 shares of Performance Based restricted stock units in Mr. Ladowicz' name."}],"balance_after":22796,"source":{"system":"sec-edgar","filing":"0001179110-20-011843","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911020011843/edgar.xml","form_type":"4"}},{"id":3265470,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2020-02-19T20:11:57.000Z","date":"2020-02-18","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":"Included in this total are 11,146 shares in Mr. Ladowicz' name outright, 7,000 shares of restricted stock units and 5,000 shares of Performance Based restricted stock units in Mr. Ladowicz' name."}],"balance_after":23146,"source":{"system":"sec-edgar","filing":"0001179110-20-001808","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911020001808/edgar.xml","form_type":"4"}},{"id":3503678,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2019-06-04T16:33:06.000Z","date":"2019-06-03","kind":"other","acquired":true,"shares":8646,"ownership":{"direct":false,"nature":"IRA"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Does not apply."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Included in this total are 8,646 shares that were moved into Mr. Ladowicz' Trust from his sole account."}],"balance_after":242923,"source":{"system":"sec-edgar","filing":"0001179110-19-007083","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911019007083/edgar.xml","form_type":"4"}},{"id":3503677,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2019-06-04T16:33:06.000Z","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":"Included in this total are 2,500 shares in Mr. Ladowicz' name outright, 5,500 shares of restricted stock units and 5,000 shares of Performance Based restricted stock units in Mr. Ladowicz' name."}],"balance_after":13500,"source":{"system":"sec-edgar","filing":"0001179110-19-007083","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911019007083/edgar.xml","form_type":"4"}},{"id":3698616,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2019-01-10T22:24:54.000Z","date":"2019-01-09","kind":"grant","acquired":true,"shares":1500,"price":7.49,"value":11235.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"These shares represent an exercise of options."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 8,646 shares in Mr. Ladowicz' name outright, 6,500 shares of restricted stock units and 5,000 shares of Performance Based restricted stock units in Mr. Ladowicz' name."}],"balance_after":20146,"source":{"system":"sec-edgar","filing":"0001179110-19-000673","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911019000673/edgar.xml","form_type":"4"}},{"id":3733379,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2018-12-13T21:14:49.000Z","date":"2018-12-12","kind":"sale","acquired":false,"shares":1000,"price":13.43,"value":13430.0,"ownership":{"direct":false,"nature":"co-trustee with spouse"},"balance_after":0,"source":{"system":"sec-edgar","filing":"0001179110-18-013823","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911018013823/edgar.xml","form_type":"4"}},{"id":3733378,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2018-12-13T21:14:49.000Z","date":"2018-12-12","kind":"sale","acquired":false,"shares":1000,"price":13.431,"value":13431.0,"ownership":{"direct":false,"nature":"co-trustee with spouse"},"balance_after":1000,"source":{"system":"sec-edgar","filing":"0001179110-18-013823","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911018013823/edgar.xml","form_type":"4"}},{"id":3733377,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2018-12-13T21:14:49.000Z","date":"2018-12-12","kind":"sale","acquired":false,"shares":500,"price":13.46,"value":6730.0,"ownership":{"direct":false,"nature":"co-trustee with spouse"},"balance_after":2000,"source":{"system":"sec-edgar","filing":"0001179110-18-013823","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911018013823/edgar.xml","form_type":"4"}},{"id":3733376,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2018-12-13T21:14:49.000Z","date":"2018-12-12","kind":"sale","acquired":false,"shares":500,"price":13.4861,"value":6743.05,"ownership":{"direct":false,"nature":"co-trustee with spouse"},"balance_after":2500,"source":{"system":"sec-edgar","filing":"0001179110-18-013823","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911018013823/edgar.xml","form_type":"4"}},{"id":3733375,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2018-12-13T21:14:49.000Z","date":"2018-12-12","kind":"sale","acquired":false,"shares":2250,"price":13.49,"value":30352.5,"ownership":{"direct":false,"nature":"co-trustee with spouse"},"balance_after":3000,"source":{"system":"sec-edgar","filing":"0001179110-18-013823","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911018013823/edgar.xml","form_type":"4"}},{"id":3733374,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2018-12-13T21:14:49.000Z","date":"2018-12-12","kind":"sale","acquired":false,"shares":1500,"price":13.5,"value":20250.0,"ownership":{"direct":false,"nature":"co-trustee with spouse"},"balance_after":5250,"source":{"system":"sec-edgar","filing":"0001179110-18-013823","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911018013823/edgar.xml","form_type":"4"}},{"id":3736846,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2018-12-11T22:22:24.000Z","date":"2018-12-11","kind":"sale","acquired":false,"shares":2000,"price":13.3,"value":26600.0,"ownership":{"direct":false,"nature":"co-trustee with spouse"},"balance_after":6750,"source":{"system":"sec-edgar","filing":"0001179110-18-013703","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911018013703/edgar.xml","form_type":"4"}},{"id":3736845,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2018-12-11T17:23:46.000Z","date":"2018-12-10","kind":"sale","acquired":false,"shares":1000,"price":13.4,"value":13400.0,"ownership":{"direct":false,"nature":"co-trustee with spouse"},"balance_after":8750,"source":{"system":"sec-edgar","filing":"0001179110-18-013663","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911018013663/edgar.xml","form_type":"4"}},{"id":3961554,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2018-04-18T21:48:19.000Z","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 7,146 shares in Mr. Ladowicz' name outright, 6,500 shares of restricted stock units and 5,000 shares of Performance Based restricted stock units in Mr. Ladowicz' name."}],"balance_after":18646,"source":{"system":"sec-edgar","filing":"0001179110-18-005781","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911018005781/edgar.xml","form_type":"4"}},{"id":4042299,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2018-02-22T17:01:52.000Z","date":"2018-02-20","kind":"grant","acquired":true,"shares":1500,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","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":"F3","text":"Does not apply."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Included in this total are 4,646 shares in Mr. Ladowicz' name outright and 9,000 shares of restricted stock units in Mr. Ladowicz' name."}],"balance_after":13646,"source":{"system":"sec-edgar","filing":"0001179110-18-002569","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911018002569/edgar.xml","form_type":"4"}},{"id":4180921,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-10-25T21:04:53.000Z","date":"2017-10-24","kind":"sale","acquired":false,"shares":10096,"price":14.4,"value":145382.4,"ownership":{"direct":false,"nature":"IRA"},"balance_after":246531,"source":{"system":"sec-edgar","filing":"0001179110-17-013440","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017013440/edgar.xml","form_type":"4"}},{"id":4180920,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-10-25T21:04:53.000Z","date":"2017-10-25","kind":"sale","acquired":false,"shares":804,"price":14.4,"value":11577.6,"ownership":{"direct":false,"nature":"IRA"},"balance_after":245727,"source":{"system":"sec-edgar","filing":"0001179110-17-013440","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017013440/edgar.xml","form_type":"4"}},{"id":4180919,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-10-25T21:04:53.000Z","date":"2017-10-25","kind":"sale","acquired":false,"shares":2400,"price":14.45,"value":34680.0,"ownership":{"direct":false,"nature":"IRA"},"balance_after":243327,"source":{"system":"sec-edgar","filing":"0001179110-17-013440","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017013440/edgar.xml","form_type":"4"}},{"id":4180918,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-10-25T21:04:53.000Z","date":"2017-10-25","kind":"sale","acquired":false,"shares":600,"price":14.5,"value":8700.0,"ownership":{"direct":false,"nature":"IRA"},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 228,300 shares held by Mr. Ladowicz in a ROTH IRA account and 14,427 shares held in Trust in an IRA account."}],"balance_after":242727,"source":{"system":"sec-edgar","filing":"0001179110-17-013440","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017013440/edgar.xml","form_type":"4"}},{"id":4204477,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-09-21T14:27:35.000Z","date":"2017-09-20","kind":"sale","acquired":false,"shares":4450,"price":12.1,"value":53845.0,"ownership":{"direct":false,"nature":"IRA"},"balance_after":252177,"source":{"system":"sec-edgar","filing":"0001179110-17-012555","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017012555/edgar.xml","form_type":"4"}},{"id":4204476,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-09-21T14:27:35.000Z","date":"2017-09-20","kind":"sale","acquired":false,"shares":1000,"price":12.155,"value":12155.0,"ownership":{"direct":false,"nature":"IRA"},"balance_after":251177,"source":{"system":"sec-edgar","filing":"0001179110-17-012555","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017012555/edgar.xml","form_type":"4"}},{"id":4204475,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-09-21T14:27:35.000Z","date":"2017-09-20","kind":"sale","acquired":false,"shares":1000,"price":12.105,"value":12105.0,"ownership":{"direct":false,"nature":"IRA"},"balance_after":250177,"source":{"system":"sec-edgar","filing":"0001179110-17-012555","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017012555/edgar.xml","form_type":"4"}},{"id":4204474,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-09-21T14:27:35.000Z","date":"2017-09-20","kind":"sale","acquired":false,"shares":1000,"price":12.1025,"value":12102.5,"ownership":{"direct":false,"nature":"IRA"},"balance_after":249177,"source":{"system":"sec-edgar","filing":"0001179110-17-012555","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017012555/edgar.xml","form_type":"4"}},{"id":4204473,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-09-21T14:27:35.000Z","date":"2017-09-20","kind":"sale","acquired":false,"shares":1000,"price":12.1075,"value":12107.5,"ownership":{"direct":false,"nature":"IRA"},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 233,750 shares held by Mr. Ladowicz in a ROTH IRA account and 14,427 shares held in Trust in an IRA account."}],"balance_after":248177,"source":{"system":"sec-edgar","filing":"0001179110-17-012555","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017012555/edgar.xml","form_type":"4"}},{"id":4205197,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-09-20T21:59:23.000Z","date":"2017-09-18","kind":"sale","acquired":false,"shares":2450,"price":12.15,"value":29767.5,"ownership":{"direct":false,"nature":"co-trustee with spouse"},"balance_after":9750,"source":{"system":"sec-edgar","filing":"0001179110-17-012546","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017012546/edgar.xml","form_type":"4"}},{"id":4205196,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-09-20T21:59:23.000Z","date":"2017-09-19","kind":"sale","acquired":false,"shares":7000,"price":12.15,"value":85050.0,"ownership":{"direct":false,"nature":"IRA"},"balance_after":260677,"source":{"system":"sec-edgar","filing":"0001179110-17-012546","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017012546/edgar.xml","form_type":"4"}},{"id":4205195,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-09-20T21:59:23.000Z","date":"2017-09-19","kind":"sale","acquired":false,"shares":2000,"price":12.1525,"value":24305.0,"ownership":{"direct":false,"nature":"IRA"},"balance_after":258677,"source":{"system":"sec-edgar","filing":"0001179110-17-012546","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017012546/edgar.xml","form_type":"4"}},{"id":4205194,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-09-20T21:59:23.000Z","date":"2017-09-19","kind":"sale","acquired":false,"shares":650,"price":12.1524,"value":7899.06,"ownership":{"direct":false,"nature":"IRA"},"balance_after":258027,"source":{"system":"sec-edgar","filing":"0001179110-17-012546","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017012546/edgar.xml","form_type":"4"}},{"id":4205193,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-09-20T21:59:23.000Z","date":"2017-09-19","kind":"sale","acquired":false,"shares":700,"price":12.105,"value":8473.5,"ownership":{"direct":false,"nature":"IRA"},"balance_after":257327,"source":{"system":"sec-edgar","filing":"0001179110-17-012546","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017012546/edgar.xml","form_type":"4"}},{"id":4205192,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-09-20T21:59:23.000Z","date":"2017-09-19","kind":"sale","acquired":true,"shares":700,"price":12.1,"value":8470.0,"ownership":{"direct":false,"nature":"IRA"},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 242,200 shares held by Mr. Ladowicz in a ROTH IRA account and 14,427 shares held in Trust in an IRA account."}],"balance_after":256627,"source":{"system":"sec-edgar","filing":"0001179110-17-012546","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017012546/edgar.xml","form_type":"4"}},{"id":4206596,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-09-19T21:41:20.000Z","date":"2017-09-18","kind":"sale","acquired":false,"shares":1350,"price":12.1,"value":16335.0,"ownership":{"direct":false,"nature":"co-trustee with spouse"},"balance_after":12550,"source":{"system":"sec-edgar","filing":"0001179110-17-012458","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017012458/edgar.xml","form_type":"4"}},{"id":4206595,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-09-19T21:41:20.000Z","date":"2017-09-18","kind":"sale","acquired":false,"shares":350,"price":12.11,"value":4238.5,"ownership":{"direct":false,"nature":"co-trustee with spouse"},"balance_after":12200,"source":{"system":"sec-edgar","filing":"0001179110-17-012458","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017012458/edgar.xml","form_type":"4"}},{"id":4206594,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-09-19T21:41:20.000Z","date":"2017-09-18","kind":"sale","acquired":false,"shares":2450,"price":12.15,"value":29767.5,"ownership":{"direct":false,"nature":"co-trustee with spouse"},"balance_after":9750,"source":{"system":"sec-edgar","filing":"0001179110-17-012458","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017012458/edgar.xml","form_type":"4"}},{"id":4206593,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-09-19T21:41:20.000Z","date":"2017-09-18","kind":"sale","acquired":false,"shares":600,"price":12.1,"value":7260.0,"ownership":{"direct":false,"nature":"IRA"},"balance_after":272477,"source":{"system":"sec-edgar","filing":"0001179110-17-012458","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017012458/edgar.xml","form_type":"4"}},{"id":4206592,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-09-19T21:41:20.000Z","date":"2017-09-18","kind":"sale","acquired":false,"shares":300,"price":12.11,"value":3633.0,"ownership":{"direct":false,"nature":"IRA"},"balance_after":272177,"source":{"system":"sec-edgar","filing":"0001179110-17-012458","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017012458/edgar.xml","form_type":"4"}},{"id":4206591,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-09-19T21:41:20.000Z","date":"2017-09-18","kind":"sale","acquired":false,"shares":4500,"price":12.15,"value":54675.0,"ownership":{"direct":false,"nature":"IRA"},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 247,650 shares held by Mr. Ladowicz in a ROTH IRA account and 20,027 shares held in Trust in an IRA account."}],"balance_after":267677,"source":{"system":"sec-edgar","filing":"0001179110-17-012458","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017012458/edgar.xml","form_type":"4"}},{"id":4274977,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-06-22T19:23:19.000Z","date":"2017-06-20","kind":"other","acquired":true,"shares":2500,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"These shares are Restricted Stock Units granted in 2014 that vested in 2017."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"Does not apply."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Included in this total are 4,646 shares in Mr. Ladowicz' name outright and 7,500 shares of restricted stock units in Mr. Ladowicz' name."}],"balance_after":12146,"source":{"system":"sec-edgar","filing":"0001179110-17-009433","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017009433/edgar.xml","form_type":"4"}},{"id":4396051,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-03-08T15:30:16.000Z","date":"2017-03-07","kind":"sale","acquired":false,"shares":16446,"price":11.209,"value":184343.214,"ownership":{"direct":false,"nature":"IRA"},"balance_after":274462,"source":{"system":"sec-edgar","filing":"0001179110-17-004223","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017004223/edgar.xml","form_type":"4"}},{"id":4396050,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-03-08T15:30:16.000Z","date":"2017-03-08","kind":"sale","acquired":false,"shares":1385,"price":11.3,"value":15650.5,"ownership":{"direct":false,"nature":"IRA"},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 250,350 shares held by Mr. Ladowicz in a ROTH IRA account and 22,727 shares held in Trust in an IRA account."}],"balance_after":273077,"source":{"system":"sec-edgar","filing":"0001179110-17-004223","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017004223/edgar.xml","form_type":"4"}},{"id":4433890,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":69286,"kind":"person","name":"Ladowicz John","position":1,"cik":"0001424453","reported_name":"Ladowicz John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-02-22T22:52:44.000Z","date":"2017-02-21","kind":"grant","acquired":true,"shares":2500,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","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 2,146 shares in Mr. Ladowicz' name outright and 10,000 shares of restricted stock units in Mr. Ladowicz' name."}],"balance_after":12146,"source":{"system":"sec-edgar","filing":"0001179110-17-002943","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017002943/edgar.xml","form_type":"4"}}]}