{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-25-225797","form_type":"8-K","ticker":"PB","cik":"0001068851","company_name":"PROSPERITY BANCSHARES INC","filed_at":"2025-10-01T23:59:59+00:00","discovered_at":"2026-05-14T18:02:38.709373+00:00","generated_at":"2026-05-17T05:02:18.291267+00:00","sec_items":["7.01","8.01","9.01"],"event_type":"m_and_a","sentiment":"positive","materiality_score":0.8,"calibrated_materiality_score":0.8,"confidence":"high","headline":"Prosperity Bancshares to acquire Southwest Bancshares for ~$269M in stock","bullets":["Prosperity will issue 4,062,520 shares valued at ~$268.9M based on $65.97 closing price.","Southwest has $2.4B assets, $1.9B loans, and $2.1B deposits as of June 30, 2025.","Transaction expected to close Q1 2026; subject to Southwest shareholder and regulatory approvals.","Brent Given to become San Antonio Area Chairman; Tom Moreno senior operations role.","Adds 11 Texas branches in San Antonio, Austin, and Hill Country; expands Prosperity's Texas footprint."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-25-225797","json":"https://secwatch.observer/filing/0001193125-25-225797.json","markdown":"https://secwatch.observer/filing/0001193125-25-225797.md","text":"https://secwatch.observer/filing/0001193125-25-225797.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1068851/000119312525225797/0001193125-25-225797-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1068851/000119312525225797/pb-20251001.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-17T05:02:18.291267+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"}