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Information herein was provided by the Plan Trustee as of 3-31-26."}],"balance_after":6357,"source":{"system":"sec-edgar","filing":"0001314109-26-000008","document":"form4-04022026_010449.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/357173/000131410926000008/form4-04022026_010449.xml","form_type":"4"}},{"id":821806,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":23886,"kind":"person","name":"Eccher James","position":1,"cik":"0001314109","reported_name":"Eccher James","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHAIRMAN AND CEO"}}],"security":"Old Second Bancorp, Inc. 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Information was provided herein by the Plan Trustee as of 3-31-26."}],"balance_after":33387,"source":{"system":"sec-edgar","filing":"0001314109-26-000008","document":"form4-04022026_010449.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000131410926000008/form4-04022026_010449.xml","form_type":"4"}},{"id":863800,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":23886,"kind":"person","name":"Eccher James","position":1,"cik":"0001314109","reported_name":"Eccher James","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHAIRMAN AND CEO"}}],"security":"Old Second Bancorp, Inc. 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The reporting person was granted 54,010 restricted stock units on the date of the grant, 27,005 of which are time-based restricted stock units that vest on the third anniversary of the grant date, and 27,005 of which are performance-based restricted stock units that may vest and convert to shares within a range from 0% to 175% of the underlying performance-based restricted stock units originally awarded, depending on our compensation committee approved performance metrics. 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The reporting person was granted 57,154 restricted stock units on the date of the grant, 28,577 of which are time-based restricted stock units that vest on the third anniversary of the grant date, and 28,577 of which are performance-based restricted stock units that may vest and convert to shares within a range from 0% to 175% of the underlying performance-based restricted stock units originally awarded, depending on our compensation committee approved performance metrics. Vested shares, if any, will be delivered to the reporting person in 3 to 5 business days from the date of vesting."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Of this total, 109,417 shares are performance-based restricted stock units and 92,159 shares are time-based restricted stock units."}],"balance_after":201576,"source":{"system":"sec-edgar","filing":"0001415889-25-005033","document":"form4-02212025_080255.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588925005033/form4-02212025_080255.xml","form_type":"4"}},{"id":1319312,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":23886,"kind":"person","name":"Eccher James","position":1,"cik":"0001314109","reported_name":"Eccher James","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHAIRMAN AND CEO"}}],"security":"Old Second Bancorp, Inc. 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Information herein was provided by the Plan Trustee as of 09-30-24."}],"balance_after":6226,"source":{"system":"sec-edgar","filing":"0001415889-24-024746","document":"form4-10042024_061045.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588924024746/form4-10042024_061045.xml","form_type":"4"}},{"id":1464671,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":23886,"kind":"person","name":"Eccher James","position":1,"cik":"0001314109","reported_name":"Eccher James","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHAIRMAN AND CEO"}}],"security":"Old Second Bancorp, Inc. 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Information herein was provided by the plan Trustee as of 6-30-24."}],"balance_after":32046,"source":{"system":"sec-edgar","filing":"0001415889-24-018821","document":"form4-07022024_050723.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588924018821/form4-07022024_050723.xml","form_type":"4"}},{"id":1464670,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":23886,"kind":"person","name":"Eccher James","position":1,"cik":"0001314109","reported_name":"Eccher James","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHAIRMAN AND CEO"}}],"security":"Old Second Bancorp, Inc. 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Information herein was provided by the plan Trustee as of 3-31-24."}],"balance_after":31897,"source":{"system":"sec-edgar","filing":"0001415889-24-018821","document":"form4-07022024_050723.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588924018821/form4-07022024_050723.xml","form_type":"4"}},{"id":1464669,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":23886,"kind":"person","name":"Eccher James","position":1,"cik":"0001314109","reported_name":"Eccher James","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHAIRMAN AND CEO"}}],"security":"Old Second Bancorp, Inc. 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Information herein was provided by the plan Trustee as of 6-30-24."}],"balance_after":6206,"source":{"system":"sec-edgar","filing":"0001415889-24-018821","document":"form4-07022024_050723.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588924018821/form4-07022024_050723.xml","form_type":"4"}},{"id":1464668,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":23886,"kind":"person","name":"Eccher James","position":1,"cik":"0001314109","reported_name":"Eccher James","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHAIRMAN AND CEO"}}],"security":"Old Second Bancorp, Inc. 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Information herein was provided by the plan Trustee as of 3-31-24."}],"balance_after":6184,"source":{"system":"sec-edgar","filing":"0001415889-24-018821","document":"form4-07022024_050723.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588924018821/form4-07022024_050723.xml","form_type":"4"}},{"id":1575794,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":23886,"kind":"person","name":"Eccher James","position":1,"cik":"0001314109","reported_name":"Eccher James","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHAIRMAN AND CEO"}}],"security":"Old Second Bancorp, Inc. 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The reporting person was granted 77,088 restricted stock units on the date of the grant, 38,544 of which are time-based restricted stock units that vest on the third anniversary of the grant date, and 38,544 of which are performance-based restricted stock units that may vest and convert to shares within a range from 0% to 175% of the underlying performance-based restricted stock units originally awarded, depending on our compensation committee approved performance metrics. Vested shares, if any, will be delivered to the reporting person in 3 to 5 business days from the date of vesting."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Of this total are 101,316 shares of Performance Based Restricted Stock Units and 80,840 shares of Restricted Stock Units."}],"balance_after":182156,"source":{"system":"sec-edgar","filing":"0001415889-24-004902","document":"form4-02222024_100223.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588924004902/form4-02222024_100223.xml","form_type":"4"}},{"id":1697427,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":23886,"kind":"person","name":"Eccher James","position":1,"cik":"0001314109","reported_name":"Eccher James","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHAIRMAN AND CEO"}}],"security":"Old Second Bancorp, Inc. 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Information herein was provided by the Plan Trustee as of 9-30-23."}],"balance_after":6139,"source":{"system":"sec-edgar","filing":"0001415889-23-013691","document":"form4-10022023_061036.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588923013691/form4-10022023_061036.xml","form_type":"4"}},{"id":1840529,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":23886,"kind":"person","name":"Eccher James","position":1,"cik":"0001314109","reported_name":"Eccher James","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHAIRMAN AND CEO"}}],"security":"Old Second Bancorp, Inc. 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Information herein was provided by the Plan Trustee as of 6-30-23."}],"balance_after":31283,"source":{"system":"sec-edgar","filing":"0001415889-23-010551","document":"form4-07032023_070734.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588923010551/form4-07032023_070734.xml","form_type":"4"}},{"id":1840528,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":23886,"kind":"person","name":"Eccher James","position":1,"cik":"0001314109","reported_name":"Eccher James","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHAIRMAN AND CEO"}}],"security":"Old Second Bancorp, Inc. 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Information herein was provided by the Plan Trustee as of 6-30-23."}],"balance_after":6120,"source":{"system":"sec-edgar","filing":"0001415889-23-010551","document":"form4-07032023_070734.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588923010551/form4-07032023_070734.xml","form_type":"4"}},{"id":1930984,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":23886,"kind":"person","name":"Eccher James","position":1,"cik":"0001314109","reported_name":"Eccher James","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHAIRMAN AND CEO"}}],"security":"Old Second Bancorp, Inc. 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Information herein was provided by the Plan Trustee as of 3-31-23."}],"balance_after":31143,"source":{"system":"sec-edgar","filing":"0001415889-23-005980","document":"form4-04042023_070446.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588923005980/form4-04042023_070446.xml","form_type":"4"}},{"id":1930983,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":23886,"kind":"person","name":"Eccher James","position":1,"cik":"0001314109","reported_name":"Eccher James","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHAIRMAN AND CEO"}}],"security":"Old Second Bancorp, Inc. 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Information herein was provided by the Plan Trustee as of 3-31-23."}],"balance_after":6093,"source":{"system":"sec-edgar","filing":"0001415889-23-005980","document":"form4-04042023_070446.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588923005980/form4-04042023_070446.xml","form_type":"4"}},{"id":1977220,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":23886,"kind":"person","name":"Eccher James","position":1,"cik":"0001314109","reported_name":"Eccher James","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHAIRMAN AND CEO"}}],"security":"Restricted Stock Units","published_at":"2023-03-03T22:21:22.000Z","date":"2023-02-21","kind":"grant","acquired":true,"shares":50076,"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 50,076 restricted stock units on the date of grant, 25,038 of which are time-based restricted stock units that cliff vest on the third anniversary of the grant date, and 25,038 of which are performance-based restricted stock units that may vest and convert to shares within a range from 0% to 150% of the underlying performance-based restricted stock units originally awarded, depending on our compensation committee approved performance metrics. 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These shares have a 3-year cliff vesting."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Included in this total are 16,408 shares held outright; 245,658 shares held with a broker; 125,544 shares of Restricted Stock Units and 148 shares held jointly with spouse."}],"balance_after":387758,"source":{"system":"sec-edgar","filing":"0001415889-23-003118","document":"form4-02232023_060214.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588923003118/form4-02232023_060214.xml","form_type":"4"}},{"id":1997652,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":23886,"kind":"person","name":"Eccher James","position":1,"cik":"0001314109","reported_name":"Eccher James","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHAIRMAN AND CEO"}}],"security":"Old Second Bancorp, Inc. 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Information herein was provided by the Plan Trustee as of 12-31-22."}],"balance_after":6075,"source":{"system":"sec-edgar","filing":"0001415889-23-000030","document":"form4-01032023_090142.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588923000030/form4-01032023_090142.xml","form_type":"4"}},{"id":2073692,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":23886,"kind":"person","name":"Eccher James","position":1,"cik":"0001314109","reported_name":"Eccher James","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHAIRMAN AND CEO"}}],"security":"Old Second Bancorp, Inc. 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Information herein was provided by the Plan Trustee as of 12-31-22."}],"balance_after":30771,"source":{"system":"sec-edgar","filing":"0001415889-23-000030","document":"form4-01032023_090142.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588923000030/form4-01032023_090142.xml","form_type":"4"}},{"id":2148266,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":23886,"kind":"person","name":"Eccher James","position":1,"cik":"0001314109","reported_name":"Eccher James","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHAIRMAN AND CEO"}}],"security":"Old Second Bancorp, Inc. 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Information herein was provided by the Plan Trustee as of 9-30-22."}],"balance_after":6057,"source":{"system":"sec-edgar","filing":"0001415889-22-010089","document":"form4-10032022_021050.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588922010089/form4-10032022_021050.xml","form_type":"4"}},{"id":2148265,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":23886,"kind":"person","name":"Eccher James","position":1,"cik":"0001314109","reported_name":"Eccher James","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHAIRMAN AND CEO"}}],"security":"Old Second Bancorp, Inc. 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Information herein was provided by the Pan Trustee as of 9-30-22."}],"balance_after":30682,"source":{"system":"sec-edgar","filing":"0001415889-22-010089","document":"form4-10032022_021050.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588922010089/form4-10032022_021050.xml","form_type":"4"}},{"id":2213452,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":23886,"kind":"person","name":"Eccher James","position":1,"cik":"0001314109","reported_name":"Eccher James","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHAIRMAN AND CEO"}}],"security":"Old Second Bancorp, Inc. 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Information herein was provided by the Plan Trustee as of 3-31-22."}],"balance_after":30407,"source":{"system":"sec-edgar","filing":"0001415889-22-007510","document":"form4-07062022_020712.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588922007510/form4-07062022_020712.xml","form_type":"4"}},{"id":2213449,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":23886,"kind":"person","name":"Eccher James","position":1,"cik":"0001314109","reported_name":"Eccher James","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHAIRMAN AND CEO"}}],"security":"Old Second Bancorp, Inc. 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Information herein was provided by the Plan Trustee as of 3-31-22."}],"balance_after":6015,"source":{"system":"sec-edgar","filing":"0001415889-22-007510","document":"form4-07062022_020712.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588922007510/form4-07062022_020712.xml","form_type":"4"}},{"id":2259162,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":23886,"kind":"person","name":"Eccher James","position":1,"cik":"0001314109","reported_name":"Eccher James","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EXECUTIVE OFFICER"}}],"security":"Old Second Bancorp, Inc. 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These shares have a three-year cliff vesting."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Included in this total are 148 shares held jointly with spouse; 229,750 shares held in a brokerage account; 83,734 shares of Restricted Stock Units and 37,734 shares of Performance Based Restricted Stock Units."}],"balance_after":351366,"source":{"system":"sec-edgar","filing":"0001415889-22-001489","document":"form4-02172022_110222.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588922001489/form4-02172022_110222.xml","form_type":"4"}},{"id":2452557,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":23886,"kind":"person","name":"Eccher James","position":1,"cik":"0001314109","reported_name":"Eccher James","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EXECUTIVE OFFICER"}}],"security":"Old Second Bancorp, Inc. 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Information herein was provided by the Plan Trustee as of 12-31-21."}],"balance_after":5994,"source":{"system":"sec-edgar","filing":"0001415889-22-000132","document":"form4-01042022_100106.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588922000132/form4-01042022_100106.xml","form_type":"4"}},{"id":2452556,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":23886,"kind":"person","name":"Eccher James","position":1,"cik":"0001314109","reported_name":"Eccher James","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EXECUTIVE OFFICER"}}],"security":"Old Second Bancorp, Inc. 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Information herein was provided by the Plan Trustee as of 12-31-21."}],"balance_after":30086,"source":{"system":"sec-edgar","filing":"0001415889-22-000132","document":"form4-01042022_100106.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588922000132/form4-01042022_100106.xml","form_type":"4"}},{"id":2550606,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":23886,"kind":"person","name":"Eccher James","position":1,"cik":"0001314109","reported_name":"Eccher James","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EXECUTIVE OFFICER"}}],"security":"Old Second Bancorp, Inc. 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Information herein was provided by the Plan Trustee as of 9-30-21."}],"balance_after":29979,"source":{"system":"sec-edgar","filing":"0001415889-21-004740","document":"form4-10052021_101023.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000141588921004740/form4-10052021_101023.xml","form_type":"4"}},{"id":2606101,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":23886,"kind":"person","name":"Eccher James","position":1,"cik":"0001314109","reported_name":"Eccher James","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO"}}],"security":"Old Second Bancorp, Inc. 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Information herein was provided by the Plan Trustee as of 06-30-21."}],"balance_after":22605,"source":{"system":"sec-edgar","filing":"0001179110-21-007239","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911021007239/edgar.xml","form_type":"4"}},{"id":2648969,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":23886,"kind":"person","name":"Eccher James","position":1,"cik":"0001314109","reported_name":"Eccher James","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO"}}],"security":"Old Second Bancorp, Inc. 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Information herein was provided by the Plan Trustee as of 06-30-21."}],"balance_after":4550,"source":{"system":"sec-edgar","filing":"0001179110-21-007239","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911021007239/edgar.xml","form_type":"4"}},{"id":2762826,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":23886,"kind":"person","name":"Eccher James","position":1,"cik":"0001314109","reported_name":"Eccher James","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO"}}],"security":"Old Second Bancorp, Inc. 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Information herein was provided by the Plan Trustee as of 03-31-21."}],"balance_after":22469,"source":{"system":"sec-edgar","filing":"0001179110-21-004110","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911021004110/edgar.xml","form_type":"4"}},{"id":2762825,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":23886,"kind":"person","name":"Eccher James","position":1,"cik":"0001314109","reported_name":"Eccher James","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO"}}],"security":"Old Second Bancorp, Inc. 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Information herein was provided by the Plan Trustee as of 03-31-21."}],"balance_after":4534,"source":{"system":"sec-edgar","filing":"0001179110-21-004110","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911021004110/edgar.xml","form_type":"4"}},{"id":2801915,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":23886,"kind":"person","name":"Eccher James","position":1,"cik":"0001314109","reported_name":"Eccher James","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO"}}],"security":"Old Second Bancorp, Inc. 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Common Stock","published_at":"2018-10-02T20:51:12.000Z","date":"2018-09-30","kind":"grant","acquired":true,"shares":51,"ownership":{"direct":false,"nature":"401k Savings Plan"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Does not apply."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Of this total, 51 shares were allocated during the third quarter pursuant to Old Second Bancorp Inc. Employee Savings Plan and Trust. Information herein was provided by the Plan Trustee as of 9-30-18."}],"balance_after":11031,"source":{"system":"sec-edgar","filing":"0001179110-18-011917","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911018011917/edgar.xml","form_type":"4"}},{"id":3803387,"issuer":{"id":2238,"kind":"organization","name":"OLD SECOND BANCORP INC","symbol":"OSBC"},"owners":[{"id":23886,"kind":"person","name":"Eccher James","position":1,"cik":"0001314109","reported_name":"Eccher James","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO"}}],"security":"Old Second Bancorp, Inc. Common Stock","published_at":"2018-10-02T20:51:12.000Z","date":"2018-09-30","kind":"grant","acquired":true,"shares":1,"ownership":{"direct":false,"nature":"Profit Sharing"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Does not apply."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Of this total, 1 share was allocated during the third quarter pursuant to Old Second Bancorp Inc. Profit Sharing Plan. Information herein was provided by the Plan Trustee as of 9-30-18."}],"balance_after":1978,"source":{"system":"sec-edgar","filing":"0001179110-18-011917","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/357173/000117911018011917/edgar.xml","form_type":"4"}}],"next_cursor":"2018-10-02T20:51:12.000000Z,3803387"}