{"schema_version":"secwatch.filing_event.v1","accession":"0001171843-23-002043","form_type":"8-K","ticker":"WABC","cik":"0000311094","company_name":"WESTAMERICA BANCORPORATION","filed_at":"2023-03-31T23:59:59+00:00","discovered_at":"2026-05-14T18:03:47.583345+00:00","generated_at":"2026-06-17T08:35:56.349596+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"Westamerica Bancorp CFO Jesse Leavitt resigns; former CFO John Thorson reappointed","bullets":["Jesse Leavitt resigned as CFO effective March 31, 2023.","John 'Robert' A. Thorson, age 62, reappointed CFO effective same date.","Thorson previously served as CFO from 2005 to 2019 and as SVP/Treasurer since 2019.","Thorson has been with Westamerica since 1989."],"urls":{"canonical":"https://secwatch.observer/filing/0001171843-23-002043","json":"https://secwatch.observer/filing/0001171843-23-002043.json","markdown":"https://secwatch.observer/filing/0001171843-23-002043.md","text":"https://secwatch.observer/filing/0001171843-23-002043.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/311094/000117184323002043/0001171843-23-002043-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/311094/000117184323002043/f8k_033123.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-17T08:35:56.349596+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":"15a5946fce","claim":"Jesse Leavitt resigned as Chief Financial Officer at WESTAMERICA BANCORPORATION.","evidence_excerpt":"Effective March 31, 2023, Jesse Leavitt resigned as Chief Financial Officer of Westamerica Bancorporation.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/311094/000117184323002043/0001171843-23-002043-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"resigned"},{"label":"Role","value":"Chief Financial Officer"}],"fact_type":"executive_change"},{"claim_id":"3ca5550e40","claim":"John 'Robert' A. Thorson was appointed as Chief Financial Officer at WESTAMERICA BANCORPORATION.","evidence_excerpt":"Effective March 31, 2023, John “Robert” A. Thorson, age 62, was reappointed Chief Financial Officer of Westamerica Bancorporation.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/311094/000117184323002043/0001171843-23-002043-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"reappointed"},{"label":"Role","value":"Chief Financial Officer"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}