{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-25-172179","form_type":"8-K","ticker":"SFNC","cik":"0000090498","company_name":"SIMMONS FIRST NATIONAL CORP","filed_at":"2025-08-04T23:59:59+00:00","discovered_at":"2026-05-14T18:02:46.650279+00:00","generated_at":"2026-05-17T21:42:12.181261+00:00","sec_items":["5.02","7.01","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"Simmons First National CEO George Makris Jr. to retire Dec 31; Jay Brogdon named successor effective Jan 1, 2026","bullets":["CEO George Makris Jr. (69) will retire as Chairman and CEO of Simmons First National and Simmons Bank effective Dec 31, 2025.","President Jay Brogdon (44) will become CEO and join the board effective Jan 1, 2026; previously CFO and President since Dec 2023.","Current director Marty Casteel will become Chairman of both entities effective Jan 1, 2026.","Makris oversaw geographic transformation and growth during his decade-plus tenure; Board cited deliberate succession planning."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-25-172179","json":"https://secwatch.observer/filing/0001193125-25-172179.json","markdown":"https://secwatch.observer/filing/0001193125-25-172179.md","text":"https://secwatch.observer/filing/0001193125-25-172179.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/90498/000119312525172179/0001193125-25-172179-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/90498/000119312525172179/d934626d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-17T21:42:12.181261+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"}