{"url_path":"/sec/osbc/8-k/2026-05-19/item-9-01","section_key":"item-9-01","section_title":"Item 9.01 Exhibits.**","topic":"sec","document":{"doc_type":"8-K","doc_date":"2026-05-19","source_url":"https://www.sec.gov/Archives/edgar/data/357173/0000357173-26-000024-index.html","accession_number":"0000357173-26-000024","cik":"0000357173","ticker":"OSBC","issuer_name":"OLD SECOND BANCORP INC","edgar_url":"https://www.sec.gov/Archives/edgar/data/357173/0000357173-26-000024-index.html","primary_entity_key":"0000357173","primary_entity_name":"OLD SECOND BANCORP INC"},"word_count":95,"has_tables":true,"body_markdown":"**Item 9.01 Exhibits.**\n\n​\n\n(d) Exhibits\n\n​\n\n[99.1 – Shareholder Presentation Announcement.](osbc-20260519xex99d1.htm)\n\n​\n\n​\n\n​\n\n​\n\n**Signature**\n\nPursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.\n\n​\n\n​\n\n​\n\n​\n\n​\n\n​\n\n**OLD SECOND BANCORP, INC.**\n\n​\n\n​\n\n​\n\n​\n\n​\n\n​\n\nDated: May 19, 2026\n\nBy:\n\n/s/ Bradley S. Adams\n\n​\n\n​\n\nBradley S. Adams\n\n​\n\n​\n\nExecutive Vice President,\n\n​\n\n​\n\nChief Operating Officer and\n\n​\n\n​\n\nChief Financial Officer\n\n​\n\n​"}