---
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"
generated_at: "2026-06-17T08:35:56.349596+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Westamerica Bancorp CFO Jesse Leavitt resigns; former CFO John Thorson reappointed

## Summary
- 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.

## SEC filing metadata
- 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
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 5.02
- 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

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001171843-23-002043
- JSON: https://secwatch.observer/filing/0001171843-23-002043.json
- Plain text: https://secwatch.observer/filing/0001171843-23-002043.txt

## Key facts
- Executive change
  Jesse Leavitt resigned as Chief Financial Officer at WESTAMERICA BANCORPORATION.
  - Action: resigned
  - Role: Chief Financial Officer
  source text: Effective March 31, 2023, Jesse Leavitt resigned as Chief Financial Officer of Westamerica Bancorporation.
  evidence_url: https://www.sec.gov/Archives/edgar/data/311094/000117184323002043/0001171843-23-002043-index.htm
- Executive change
  John 'Robert' A. Thorson was appointed as Chief Financial Officer at WESTAMERICA BANCORPORATION.
  - Action: reappointed
  - Role: Chief Financial Officer
  source text: Effective March 31, 2023, John “Robert” A. Thorson, age 62, was reappointed Chief Financial Officer of Westamerica Bancorporation.
  evidence_url: https://www.sec.gov/Archives/edgar/data/311094/000117184323002043/0001171843-23-002043-index.htm

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