{"transactions":[{"id":886735,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":65076,"kind":"person","name":"BONIFAS EDWARD","position":1,"cik":"0001191044","reported_name":"BONIFAS EDWARD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2026-02-25T00:04:55.000Z","date":"2026-02-21","kind":"tax_withholding","planned":false,"acquired":false,"shares":3077,"price":20.57,"value":63293.89,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares vested upon the third anniversary of the date of grant previously reported and are now issued and added to the reporting person's common stock holdings outright."}],"balance_after":10595,"source":{"system":"sec-edgar","filing":"0001191044-26-000002","document":"form4-02252026_120251.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/357173/000119104426000002/form4-02252026_120251.xml","form_type":"4"}},{"id":886734,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":65076,"kind":"person","name":"BONIFAS EDWARD","position":1,"cik":"0001191044","reported_name":"BONIFAS EDWARD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2026-02-25T00:04:55.000Z","date":"2026-02-17","kind":"grant","planned":false,"acquired":true,"shares":3121,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":13672,"source":{"system":"sec-edgar","filing":"0001191044-26-000002","document":"form4-02252026_120251.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000119104426000002/form4-02252026_120251.xml","form_type":"4"}},{"id":1254387,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":65076,"kind":"person","name":"BONIFAS EDWARD","position":1,"cik":"0001191044","reported_name":"BONIFAS EDWARD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2025-02-21T21:11:07.000Z","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":"0001415889-25-005058","document":"form4-02212025_090202.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588925005058/form4-02212025_090202.xml","form_type":"4"}},{"id":1627110,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":65076,"kind":"person","name":"BONIFAS EDWARD","position":1,"cik":"0001191044","reported_name":"BONIFAS EDWARD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2024-02-22T22:19:48.000Z","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 3,773 shares held outright; 10,441 shares of Restricted Stock Units and 165,401 shares held in Trust."}],"balance_after":179615,"source":{"system":"sec-edgar","filing":"0001415889-24-004860","document":"form4-02222024_100235.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588924004860/form4-02222024_100235.xml","form_type":"4"}},{"id":1997651,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":65076,"kind":"person","name":"BONIFAS EDWARD","position":1,"cik":"0001191044","reported_name":"BONIFAS EDWARD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2023-02-23T17:22:10.000Z","date":"2023-02-21","kind":"other","acquired":true,"shares":3077,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"These shares are Restricted Stock Units granted 2-21-23 pursuant to the Old Second Bancorp, Inc. 2019 Equity 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; 11,000 shares held in an IRA and 152,901 shares held in Trust."}],"balance_after":175331,"source":{"system":"sec-edgar","filing":"0001415889-23-003110","document":"form4-02232023_050259.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588923003110/form4-02232023_050259.xml","form_type":"4"}},{"id":2390428,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":65076,"kind":"person","name":"BONIFAS EDWARD","position":1,"cik":"0001191044","reported_name":"BONIFAS EDWARD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2022-02-17T19:30:44.000Z","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 are restricted stock units granted pursuant to the Old Second Long Term Incentive Plan. These shares have a three-year vesting."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Of this total, 9,853 shares are restricted stock units and a63,901 shares are held in a Trust."}],"balance_after":173754,"source":{"system":"sec-edgar","filing":"0001415889-22-001492","document":"form4-02172022_110234.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588922001492/form4-02172022_110234.xml","form_type":"4"}},{"id":2582757,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":65076,"kind":"person","name":"BONIFAS EDWARD","position":1,"cik":"0001191044","reported_name":"BONIFAS EDWARD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2021-09-02T19:55:03.000Z","date":"2021-08-23","kind":"purchase","acquired":true,"shares":3350,"price":11.88,"value":39798.0,"ownership":{"direct":true},"footnotes":[{"field":"acquired","element":"transactionAcquiredDisposedCode","label":"F1","text":"This amendment is being filed to amend the information in Mr. Bonifas' original Form 4 filed on August 23, 2021, which mistakenly reported his purchase of common stock as securities disposed of, using a \"D\" designation, in column 4. This amendment now correctly reflects his purchase of common stock as securities acquired, using an \"A\" designation, in column 4."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Included in this total are 11,000 shares held in Mr. Bonifas' IRA; 152,901 shares held in Trust and 6,773 shares of restricted stock units in Mr. Bonifas' name."}],"balance_after":170674,"source":{"system":"sec-edgar","filing":"0001415889-21-004181","document":"form4a-09022021_120955.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588921004181/form4a-09022021_120955.xml","form_type":"4/A","original_submission_date":"2021-08-23"}},{"id":2593005,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":65076,"kind":"person","name":"BONIFAS EDWARD","position":1,"cik":"0001191044","reported_name":"BONIFAS EDWARD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2021-08-24T14:22:07.000Z","date":"2021-08-23","kind":"purchase","acquired":false,"shares":3350,"price":11.88,"value":39798.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 11,000 shares held in Mr. Bonifas' IRA; 152,901 shares held in Trust and  6,773 shares of restricted stock units in Mr. Bonifas' name."}],"balance_after":170674,"source":{"system":"sec-edgar","filing":"0001179110-21-008362","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911021008362/edgar.xml","form_type":"4"}},{"id":2801920,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":65076,"kind":"person","name":"BONIFAS EDWARD","position":1,"cik":"0001191044","reported_name":"BONIFAS EDWARD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2021-03-09T22:51:07.000Z","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 11,983 shares held in Mr. Bonifas name outright; 148,568 shares held in a brokerage account and  6,773 shares of restricted stock units in Mr. Bonifas' name."}],"balance_after":167324,"source":{"system":"sec-edgar","filing":"0001179110-21-003154","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911021003154/edgar.xml","form_type":"4"}},{"id":2852594,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":65076,"kind":"person","name":"BONIFAS EDWARD","position":1,"cik":"0001191044","reported_name":"BONIFAS EDWARD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2021-02-18T23:51:01.000Z","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 Equity Incentive Plan. These shares have a 3-year cliff vesting."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 9,562 shares held in Mr. Bonifas name outright; 143,568 shares held in a brokerage account,  10,773 shares of restricted stock units and 5,000 shares of Performance Based restricted stock units in the name of Mr. Bonifas."}],"balance_after":168903,"source":{"system":"sec-edgar","filing":"0001179110-21-001926","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911021001926/edgar.xml","form_type":"4"}},{"id":3265361,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":65076,"kind":"person","name":"BONIFAS EDWARD","position":1,"cik":"0001191044","reported_name":"BONIFAS EDWARD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2020-02-19T20:10:54.000Z","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 9,562 shares held in Mr. Bonifas name outright; 143,568 shares held in a brokerage account,  7,000 shares of restricted stock units and 5,000 shares of Performance Based restricted stock units in the name of Mr. Bonifas."}],"balance_after":165130,"source":{"system":"sec-edgar","filing":"0001179110-20-001805","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911020001805/edgar.xml","form_type":"4"}},{"id":3503674,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":65076,"kind":"person","name":"BONIFAS EDWARD","position":1,"cik":"0001191044","reported_name":"BONIFAS EDWARD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2019-06-04T16:32:07.000Z","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 9,562 shares held in Mr. Bonifas name outright; 143,568 shares held in a brokerage account,  5,500 shares of restricted stock units and 5,000 shares of Performance Based restricted stock units in the name of Mr. Bonifas."}],"balance_after":163630,"source":{"system":"sec-edgar","filing":"0001179110-19-007080","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911019007080/edgar.xml","form_type":"4"}},{"id":3740449,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":65076,"kind":"person","name":"BONIFAS EDWARD","position":1,"cik":"0001191044","reported_name":"BONIFAS EDWARD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2018-12-07T20:40:56.000Z","date":"2018-12-06","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 the exercise of options."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 8,562 shares held in Mr. Bonifas name outright; 142,068 shares held in a brokerage account,  9,000 shares of restricted stock units and 5,000 shares of Performance Based restricted stock units in the name of Mr. Bonifas."}],"balance_after":162130,"source":{"system":"sec-edgar","filing":"0001179110-18-013561","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911018013561/edgar.xml","form_type":"4"}},{"id":3961546,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":65076,"kind":"person","name":"BONIFAS EDWARD","position":1,"cik":"0001191044","reported_name":"BONIFAS EDWARD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2018-04-18T21:46:03.000Z","date":"2018-04-17","kind":"grant","acquired":true,"shares":5000,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","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":"F2","text":"Does not apply."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 4,562 shares held in Mr. Bonifas name outright; 142,068 shares held in a brokerage account,  9,000 shares of restricted stock units and 5,000 shares of Performance Based restricted stock units in the name of Mr. Bonifas."}],"balance_after":160630,"source":{"system":"sec-edgar","filing":"0001179110-18-005774","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911018005774/edgar.xml","form_type":"4"}},{"id":4042296,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":65076,"kind":"person","name":"BONIFAS EDWARD","position":1,"cik":"0001191044","reported_name":"BONIFAS EDWARD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2018-02-22T16:59:47.000Z","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 4,562 shares held in Mr. Bonifas name outright; 142,068 shares held in a brokerage account and 9,000 shares of restricted stock units in the name of Mr. Bonifas."}],"balance_after":155630,"source":{"system":"sec-edgar","filing":"0001179110-18-002566","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911018002566/edgar.xml","form_type":"4"}},{"id":4231739,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":65076,"kind":"person","name":"BONIFAS EDWARD","position":1,"cik":"0001191044","reported_name":"BONIFAS EDWARD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-08-17T16:23:31.000Z","date":"2017-08-16","kind":"purchase","acquired":true,"shares":3000,"price":11.5751,"value":34725.3,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 9,744 shares held in Mr. Bonifas name outright; 137,102 shares held in a brokerage account and 7,500 shares of restricted stock units in the name of Mr. Bonifas."}],"balance_after":154346,"source":{"system":"sec-edgar","filing":"0001179110-17-011598","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017011598/edgar.xml","form_type":"4"}},{"id":4274983,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":65076,"kind":"person","name":"BONIFAS EDWARD","position":1,"cik":"0001191044","reported_name":"BONIFAS EDWARD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-06-22T19:25:05.000Z","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":"F2","text":"Does not apply."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 9,744 shares held in Mr. Bonifas name outright; 134,102 shares held in a brokerage account and 7,500 shares of restricted stock units in the name of Mr. Bonifas."}],"balance_after":151346,"source":{"system":"sec-edgar","filing":"0001179110-17-009439","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017009439/edgar.xml","form_type":"4"}},{"id":4290558,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":65076,"kind":"person","name":"BONIFAS EDWARD","position":1,"cik":"0001191044","reported_name":"BONIFAS EDWARD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-06-07T21:34:46.000Z","date":"2017-06-06","kind":"purchase","acquired":true,"shares":1984,"price":11.4,"value":22617.6,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 7,244 shares held in Mr. Bonifas name outright; 134,102 shares held in a brokerage account and 10,000 shares of restricted stock units in the name of Mr. Bonifas."}],"balance_after":151346,"source":{"system":"sec-edgar","filing":"0001179110-17-008703","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017008703/edgar.xml","form_type":"4"}},{"id":4309259,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":65076,"kind":"person","name":"BONIFAS EDWARD","position":1,"cik":"0001191044","reported_name":"BONIFAS EDWARD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-05-23T15:27:57.000Z","date":"2017-05-22","kind":"purchase","acquired":true,"shares":516,"price":11.4,"value":5882.4,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 7,244 shares held in Mr. Bonifas name outright; 132,118 shares held in a brokerage account and 10,000 shares of restricted stock units in the name of Mr. Bonifas."}],"balance_after":149362,"source":{"system":"sec-edgar","filing":"0001179110-17-007812","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017007812/edgar.xml","form_type":"4"}},{"id":4312730,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":65076,"kind":"person","name":"BONIFAS EDWARD","position":1,"cik":"0001191044","reported_name":"BONIFAS EDWARD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-05-19T20:41:25.000Z","date":"2017-05-19","kind":"purchase","acquired":true,"shares":2500,"price":11.5,"value":28750.0,"ownership":{"direct":true},"balance_after":148530,"source":{"system":"sec-edgar","filing":"0001179110-17-007622","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017007622/edgar.xml","form_type":"4"}},{"id":4312729,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":65076,"kind":"person","name":"BONIFAS EDWARD","position":1,"cik":"0001191044","reported_name":"BONIFAS EDWARD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. 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Common Stock","published_at":"2017-03-13T16:19:35.000Z","date":"2017-03-10","kind":"purchase","acquired":true,"shares":2500,"price":11,"value":27500.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 7,244 shares held in Mr. Bonifas name outright; 118,286 shares held in a brokerage account and 10,000 shares of restricted stock units in the name of Mr. Bonifas."}],"balance_after":132848,"source":{"system":"sec-edgar","filing":"0001179110-17-004464","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017004464/edgar.xml","form_type":"4"}},{"id":4389798,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":65076,"kind":"person","name":"BONIFAS EDWARD","position":1,"cik":"0001191044","reported_name":"BONIFAS EDWARD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp Inc. Common Stock","published_at":"2017-03-13T16:19:35.000Z","date":"2017-03-10","kind":"purchase","acquired":true,"shares":2500,"price":10.95,"value":27375.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 7,244 shares held in Mr. Bonifas name outright; 118,286 shares held in a brokerage account and 10,000 shares of restricted stock units in the name of Mr. Bonifas."}],"balance_after":135348,"source":{"system":"sec-edgar","filing":"0001179110-17-004464","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017004464/edgar.xml","form_type":"4"}},{"id":4389797,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":65076,"kind":"person","name":"BONIFAS EDWARD","position":1,"cik":"0001191044","reported_name":"BONIFAS EDWARD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp Inc. Common Stock","published_at":"2017-03-13T16:19:35.000Z","date":"2017-03-10","kind":"purchase","acquired":true,"shares":182,"price":10.9,"value":1983.8,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 7,244 shares held in Mr. Bonifas name outright; 118,286 shares held in a brokerage account and 10,000 shares of restricted stock units in the name of Mr. Bonifas."}],"balance_after":135530,"source":{"system":"sec-edgar","filing":"0001179110-17-004464","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017004464/edgar.xml","form_type":"4"}},{"id":4433885,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":65076,"kind":"person","name":"BONIFAS EDWARD","position":1,"cik":"0001191044","reported_name":"BONIFAS EDWARD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2017-02-22T22:50:50.000Z","date":"2017-02-21","kind":"grant","acquired":true,"shares":2500,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"These shares represent shares granted by the 2017 Equity Incentive Plan."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this total are 2,062 shares held in Mr. Bonifas name outright; 118,286 shares held in a brokerage account and 10,000 shares of restricted stock units in the name of Mr. Bonifas."}],"balance_after":130348,"source":{"system":"sec-edgar","filing":"0001179110-17-002938","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911017002938/edgar.xml","form_type":"4"}}]}