{"schema_version":"secwatch.filing_event.v1","accession":"0000357173-26-000016","form_type":"8-K","ticker":"OSBC","cik":"0000357173","company_name":"OLD SECOND BANCORP INC","filed_at":"2026-04-01T23:59:59+00:00","discovered_at":"2026-05-14T18:02:33.580853+00:00","generated_at":"2026-05-15T08:03:32.497611+00:00","sec_items":[],"event_type":"other_material","sentiment":"neutral","materiality_score":0.15,"calibrated_materiality_score":0.15,"confidence":"high","headline":"Old Second Bancorp to report Q1 2026 earnings on April 22, call April 23","bullets":["Q1 2026 financial results to be released after market close on April 22, 2026.","Earnings call scheduled for April 23, 2026 at 10:00 AM ET / 9:00 AM CT.","Webcast accessible via https://www.webcaster5.com/Webcast/Page/2239/53807.","Replay available on investor relations website for up to one year.","No preliminary financial data or guidance provided in this filing."],"urls":{"canonical":"https://secwatch.observer/filing/0000357173-26-000016","json":"https://secwatch.observer/filing/0000357173-26-000016.json","markdown":"https://secwatch.observer/filing/0000357173-26-000016.md","text":"https://secwatch.observer/filing/0000357173-26-000016.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/357173/000035717326000016/0000357173-26-000016-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/357173/000035717326000016/osbc-20260401x8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-15T08:03:32.497611+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"}