---
schema_version: "secwatch.filing_event.v1"
accession: "0001171843-24-003696"
form_type: "8-K"
ticker: "WABC"
cik: "0000311094"
company_name: "WESTAMERICA BANCORPORATION"
filed_at: "2024-06-28T23:59:59+00:00"
generated_at: "2026-06-01T00:52:24.579364+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Westamerica appoints Anela Jonas as CFO; Thorson becomes Treasurer

## Summary
- Anela Jonas named CFO effective June 27, 2024; she served as Controller for 13 years in Finance.
- John "Robert" Thorson steps down as CFO, retains Treasurer and Treasury Division Manager roles.
- Thorson previously served as CFO from 2005-2019 and again from March 2023 to June 2024.
- Jonas is a California CPA (inactive) with varied experience in the company's Finance division.

## SEC filing metadata
- accession: 0001171843-24-003696
- form_type: 8-K
- ticker: WABC
- cik: 0000311094
- company_name: WESTAMERICA BANCORPORATION
- filed_at: 2024-06-28T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/311094/000117184324003696/0001171843-24-003696-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/311094/000117184324003696/f8k_062824.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001171843-24-003696
- JSON: https://secwatch.observer/filing/0001171843-24-003696.json
- Plain text: https://secwatch.observer/filing/0001171843-24-003696.txt

## Key facts
- Executive change
  Anela Jonas was appointed as Chief Financial Officer at WESTAMERICA BANCORPORATION.
  - Action: appointed
  - Role: Chief Financial Officer
  source text: Effective June 27, 2024, Westamerica Bancorporation (the “Company”) appointed Ms. Anela Jonas as Chief Financial Officer.
  evidence_url: https://www.sec.gov/Archives/edgar/data/311094/000117184324003696/0001171843-24-003696-index.htm
- Executive change
  John "Robert" Thorson changed role as Treasurer and Treasury Division Manager at WESTAMERICA BANCORPORATION.
  - Role: Treasurer and Treasury Division Manager
  source text: Effective June 27, 2024, Mr. John “Robert” Thorson will retain his responsibilities as Treasurer and Treasury Division Manager.
  evidence_url: https://www.sec.gov/Archives/edgar/data/311094/000117184324003696/0001171843-24-003696-index.htm

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