{"schema_version":"secwatch.filing_event.v1","accession":"0000357173-25-000079","form_type":"8-K","ticker":"OSBC","cik":"0000357173","company_name":"OLD SECOND BANCORP INC","filed_at":"2025-09-15T23:59:59+00:00","discovered_at":"2026-05-14T18:02:46.074930+00:00","generated_at":"2026-05-17T06:41:16.758717+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.15,"calibrated_materiality_score":0.15,"confidence":"high","headline":"Old Second Bancorp director John Ladowicz resigns at age 73 under mandatory retirement policy","bullets":["John Ladowicz resigned from Board effective Sept 14, 2025, upon turning 73 per company's Director Resignation Policy.","Resignation not due to any disagreement with Old Second Bancorp.","Ladowicz served on Audit, Compensation, Nominating, Loan, and Risk committees since 2008.","Board will not immediately fill vacancy; board size reduced by one member.","Board realigned director classes in Feb 2025 anticipating Ladowicz's retirement."],"urls":{"canonical":"https://secwatch.observer/filing/0000357173-25-000079","json":"https://secwatch.observer/filing/0000357173-25-000079.json","markdown":"https://secwatch.observer/filing/0000357173-25-000079.md","text":"https://secwatch.observer/filing/0000357173-25-000079.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/357173/000035717325000079/0000357173-25-000079-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/357173/000035717325000079/tmb-20250914x8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-17T06:41:16.758717+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}