{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-25-246982","form_type":"8-K","ticker":"TCBX","cik":"0001781730","company_name":"Third Coast Bancshares, Inc.","filed_at":"2025-10-22T23:59:59+00:00","discovered_at":"2026-05-14T18:02:40.434601+00:00","generated_at":"2026-05-17T02:48:02.501395+00:00","sec_items":["7.01","8.01","9.01"],"event_type":"m_and_a","sentiment":"positive","materiality_score":0.75,"calibrated_materiality_score":0.75,"confidence":"high","headline":"Third Coast Bancshares to acquire Keystone Bancshares for ~$123M in stock/cash","bullets":["Transaction valued at ~$123M; Keystone shareholders elect 0.45925 TCBX shares or cash equivalent.","Pro forma combined assets exceed $6B; Third Coast currently >$5B, Keystone >$1B.","Expected to close in Q1 2026, subject to regulatory and shareholder approvals.","Merger expands Third Coast's Austin presence; Keystone has two branches in Austin plus Ballinger and Bastrop.","Combined company will operate under Third Coast name and brand."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-25-246982","json":"https://secwatch.observer/filing/0001193125-25-246982.json","markdown":"https://secwatch.observer/filing/0001193125-25-246982.md","text":"https://secwatch.observer/filing/0001193125-25-246982.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1781730/000119312525246982/0001193125-25-246982-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1781730/000119312525246982/tcbx-20251022.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-17T02:48:02.501395+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"}