{"schema_version":"secwatch.filing_event.v1","accession":"0000357173-21-000092","form_type":"8-K","ticker":"OSBC","cik":"0000357173","company_name":"OLD SECOND BANCORP INC","filed_at":"2021-12-01T23:59:59+00:00","discovered_at":"2026-05-14T18:04:15.151161+00:00","generated_at":"2026-06-28T04:37:35.571616+00:00","sec_items":["2.01","5.02","8.01","9.01"],"event_type":"m_and_a","sentiment":"positive","materiality_score":0.75,"calibrated_materiality_score":0.75,"confidence":"high","headline":"Old Second completes West Suburban merger; pro forma assets $6.2B, 65 locations","bullets":["West Suburban shareholders receive 42.413 OSBC shares + $271.15 cash per share.","Pro forma as of Sep 30, 2021: $6.2B assets, $5.3B deposits, $3.4B loans, 65 branches.","Keith Acker, Keith Kotche, John Williams join Old Second board of directors.","CEO Keith Acker's employment agreement includes death benefit up to $750,000."],"urls":{"canonical":"https://secwatch.observer/filing/0000357173-21-000092","json":"https://secwatch.observer/filing/0000357173-21-000092.json","markdown":"https://secwatch.observer/filing/0000357173-21-000092.md","text":"https://secwatch.observer/filing/0000357173-21-000092.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/357173/000035717321000092/0000357173-21-000092-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/357173/000035717321000092/osbc-20211201x8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-28T04:37:35.571616+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":"1108d23e46","claim":"Keith Kotche was appointed as Director at OLD SECOND BANCORP INC.","evidence_excerpt":"appointed three former West Suburban Bank directors to the Board as follows: Keith Acker, John Williams, Jr. and Keith Kotche (the “ New Directors ”).","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/357173/000035717321000092/0000357173-21-000092-index.htm","confidence":1.0,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Director"}],"fact_type":"executive_change"},{"claim_id":"7882107342","claim":"Keith Acker was appointed as Director at OLD SECOND BANCORP INC.","evidence_excerpt":"appointed three former West Suburban Bank directors to the Board as follows: Keith Acker, John Williams, Jr. and Keith Kotche (the “ New Directors ”).","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/357173/000035717321000092/0000357173-21-000092-index.htm","confidence":1.0,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Director"}],"fact_type":"executive_change"},{"claim_id":"8b02ecbb47","claim":"John Williams, Jr. was appointed as Director at OLD SECOND BANCORP INC.","evidence_excerpt":"appointed three former West Suburban Bank directors to the Board as follows: Keith Acker, John Williams, Jr. and Keith Kotche (the “ New Directors ”).","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/357173/000035717321000092/0000357173-21-000092-index.htm","confidence":1.0,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"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"}