{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-26-291486","form_type":"8-K","ticker":"PB","cik":"0001068851","company_name":"PROSPERITY BANCSHARES INC","filed_at":"2026-07-01T11:15:06+00:00","discovered_at":"2026-07-01T11:20:00.260609+00:00","generated_at":"2026-07-01T11:20:37.107680+00:00","sec_items":["2.01","2.03","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":"Prosperity Bancshares completes $590M cash-and-stock acquisition of Stellar Bancorp","bullets":["Total consideration ~$590M cash + 19M PB shares; Stellar holders got 0.3803 PB shares + $11.36 cash per share.","Robert R. Franklin Jr. appointed Vice Chairman of Prosperity and Prosperity Bank; receives $1.12M base salary, 175% target bonus, $3M signing bonus, 25,000 RSA shares.","Stellar's 52 banking offices in Houston, Beaumont, East Texas, Dallas to operate under Stellar name until operational integration in March 2027.","Prosperity assumed ~$2.17B in FHLB Dallas obligations from Stellar."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-26-291486","json":"https://secwatch.observer/filing/0001193125-26-291486.json","markdown":"https://secwatch.observer/filing/0001193125-26-291486.md","text":"https://secwatch.observer/filing/0001193125-26-291486.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1068851/000119312526291486/0001193125-26-291486-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1068851/000119312526291486/d109409d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-07-01T11:20:37.107680+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":"b99270b80f","claim":"Joseph B. Swinbank was appointed as Director at PROSPERITY BANCSHARES INC.","evidence_excerpt":"The two former directors of Stellar appointed by the Board, in each case effective as of the Effective Time, were Robert R. Franklin, Jr. and Joseph B. Swinbank.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1068851/000119312526291486/0001193125-26-291486-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Director"}],"fact_type":"executive_change"},{"claim_id":"bf04f18fd7","claim":"Robert R. Franklin, Jr. was appointed as Vice Chairman at PROSPERITY BANCSHARES INC.","evidence_excerpt":"Effective as of the Effective Time, Mr. Franklin was appointed to the position of Vice Chairman of Prosperity and Prosperity Bank.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1068851/000119312526291486/0001193125-26-291486-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Vice Chairman"}],"fact_type":"executive_change"},{"claim_id":"fde1bb3db3","claim":"Robert R. Franklin, Jr. was appointed as Director at PROSPERITY BANCSHARES INC.","evidence_excerpt":"The two former directors of Stellar appointed by the Board, in each case effective as of the Effective Time, were Robert R. Franklin, Jr. and Joseph B. Swinbank.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1068851/000119312526291486/0001193125-26-291486-index.htm","confidence":0.95,"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"}