{"schema_version":"secwatch.filing_event.v1","accession":"0001171843-26-000400","form_type":"8-K","ticker":"WABC","cik":"0000311094","company_name":"WESTAMERICA BANCORPORATION","filed_at":"2026-01-23T23:59:59+00:00","discovered_at":"2026-05-14T18:02:37.335745+00:00","generated_at":"2026-05-16T08:36:20.569115+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.3,"calibrated_materiality_score":0.3,"confidence":"high","headline":"Westamerica Bancorp appoints Carter Welch to Board as independent director","bullets":["Carter Welch appointed independent director effective February 26, 2026.","Welch has over 25 years of experience in Marketing and Business Strategy.","Appointment fills a board vacancy; term until next election."],"urls":{"canonical":"https://secwatch.observer/filing/0001171843-26-000400","json":"https://secwatch.observer/filing/0001171843-26-000400.json","markdown":"https://secwatch.observer/filing/0001171843-26-000400.md","text":"https://secwatch.observer/filing/0001171843-26-000400.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/311094/000117184326000400/0001171843-26-000400-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/311094/000117184326000400/f8k_012226.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-16T08:36:20.569115+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"}