{"schema_version":"secwatch.filing_event.v1","accession":"0000357173-26-000037","form_type":"8-K","ticker":"OSBC","cik":"0000357173","company_name":"OLD SECOND BANCORP INC","filed_at":"2026-07-08T15:00:06+00:00","discovered_at":"2026-07-08T15:01:00.363163+00:00","generated_at":"2026-07-08T15:01:04.676269+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.2,"calibrated_materiality_score":0.2,"confidence":"high","headline":"Director John Williams, Jr. resigns from Old Second Bancorp board upon reaching age 73","bullets":["Resignation effective July 7, 2026, per Director Resignation Policy requiring resignation at age 73.","Resignation not due to any disagreement with the company.","Board will not fill vacancy; board size reduced by one member.","Williams served on Risk and Insurance Committee since 2021."],"urls":{"canonical":"https://secwatch.observer/filing/0000357173-26-000037","json":"https://secwatch.observer/filing/0000357173-26-000037.json","markdown":"https://secwatch.observer/filing/0000357173-26-000037.md","text":"https://secwatch.observer/filing/0000357173-26-000037.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/357173/000035717326000037/0000357173-26-000037-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/357173/000035717326000037/osbc-20260707x8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-07-08T15:01:04.676269+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":[{"claim_id":"3f57d37d84","claim":"John Williams, Jr. resigned as Director at OLD SECOND BANCORP INC.","evidence_excerpt":"Effective July 7, 2026, John Williams, Jr., a member of the Board of Directors (the “Board”) of Old Second Bancorp, Inc. (the “Company”), resigned from the Board.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/357173/000035717326000037/0000357173-26-000037-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"resigned"},{"label":"Role","value":"Director"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}