---
schema_version: "secwatch.filing_event.v1"
accession: "0001171843-25-005325"
form_type: "8-K"
ticker: "WABC"
cik: "0000311094"
company_name: "WESTAMERICA BANCORPORATION"
filed_at: "2025-08-12T23:59:59+00:00"
generated_at: "2026-05-17T14:57:10.696832+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.25
confidence: "high"
source: SEC EDGAR
---

# E. Joseph Bowler to retire from Westamerica Bancorp Board effective Sept 25, 2025

## Summary
- Director E. Joseph Bowler notified retirement on Aug 11, 2025, effective Sep 25, 2025.
- Bowler served on the board since 2003; previously Senior VP and Treasurer until 2002.
- He served on Audit, Loan & Investment, Nominating Committees, and Westamerica Bank board.
- No disagreement with company operations, policies, or practices was reported.
- No replacement for the departing director has been announced yet.

## SEC filing metadata
- accession: 0001171843-25-005325
- form_type: 8-K
- ticker: WABC
- cik: 0000311094
- company_name: WESTAMERICA BANCORPORATION
- filed_at: 2025-08-12T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.25
- calibrated_materiality_score: 0.25
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/311094/000117184325005325/0001171843-25-005325-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/311094/000117184325005325/f8k_081225.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001171843-25-005325
- JSON: https://secwatch.observer/filing/0001171843-25-005325.json
- Plain text: https://secwatch.observer/filing/0001171843-25-005325.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.