---
schema_version: "secwatch.filing_event.v1"
accession: "0001171843-23-003706"
form_type: "8-K"
ticker: "WABC"
cik: "0000311094"
company_name: "WESTAMERICA BANCORPORATION"
filed_at: "2023-06-02T23:59:59+00:00"
generated_at: "2026-06-14T08:37:36.312181+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# Director Catherine Cope MacMillan retires from Westamerica Bancorp board after 38 years

## Summary
- Catherine Cope MacMillan retired from the Board effective June 1, 2023, after serving since 1985.
- She served on the Loan/Investment, Employee Benefits/Compensation, and Audit Committees, plus the bank board.
- No disagreement with the company on any matter relating to operations, policies, or practices.

## SEC filing metadata
- accession: 0001171843-23-003706
- form_type: 8-K
- ticker: WABC
- cik: 0000311094
- company_name: WESTAMERICA BANCORPORATION
- filed_at: 2023-06-02T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/311094/000117184323003706/0001171843-23-003706-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/311094/000117184323003706/f8k_060223.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001171843-23-003706
- JSON: https://secwatch.observer/filing/0001171843-23-003706.json
- Plain text: https://secwatch.observer/filing/0001171843-23-003706.txt

## Key facts
- Executive change
  Catherine Cope MacMillan retired as Director at WESTAMERICA BANCORPORATION.
  - Action: retired
  - Role: Director
  source text: Effective June 1, 2023, Catherine Cope MacMillan retired from Westamerica Bancorporation’s (the Company) Board of Directors.
  evidence_url: https://www.sec.gov/Archives/edgar/data/311094/000117184323003706/0001171843-23-003706-index.htm

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