---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-25-026882"
form_type: "8-K"
ticker: "THG"
cik: "0000944695"
company_name: "HANOVER INSURANCE GROUP, INC."
filed_at: "2025-02-25T23:59:59+00:00"
generated_at: "2026-05-26T05:20:36.069559+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.2
calibrated_materiality_score: 0.2
confidence: "high"
source: SEC EDGAR
---

# Hanover Insurance CFO Farber appointed PAO; Barnes resigns

## Summary
- Warren E. Barnes resigned as SVP, Corporate Controller and PAO effective Feb 25, 2025.
- Jeffrey M. Farber, EVP and CFO since 2016, appointed as additional Principal Accounting Officer.
- Barnes' retirement from the company remains effective April 1, 2025, as previously disclosed.
- Farber previously held senior roles at AIG, Bear Stearns, and Deloitte & Touche.

## SEC filing metadata
- accession: 0000950170-25-026882
- form_type: 8-K
- ticker: THG
- cik: 0000944695
- company_name: HANOVER INSURANCE GROUP, INC.
- filed_at: 2025-02-25T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.2
- calibrated_materiality_score: 0.2
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/944695/000095017025026882/0000950170-25-026882-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/944695/000095017025026882/thg-20250225.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-25-026882
- JSON: https://secwatch.observer/filing/0000950170-25-026882.json
- Plain text: https://secwatch.observer/filing/0000950170-25-026882.txt

## Key facts
- Executive change
  Jeffrey M. Farber was appointed as Principal Accounting Officer at HANOVER INSURANCE GROUP, INC..
  - Action: appointed
  - Role: Principal Accounting Officer
  source text: the Board of Directors of the Registrant appointed Jeffrey M. Farber, 60, the Registrant’s Executive Vice President and Chief Financial Officer, to assume the role of PAO.
  evidence_url: https://www.sec.gov/Archives/edgar/data/944695/000095017025026882/0000950170-25-026882-index.htm
- Executive change
  Warren E. Barnes resigned as Senior Vice President, Corporate Controller and Principal Accounting Officer at HANOVER INSURANCE GROUP, INC..
  - Action: resigned
  - Role: Senior Vice President, Corporate Controller and Principal Accounting Officer
  source text: on February 25, 2025, Mr. Barnes resigned as Senior Vice President, Corporate Controller and PAO
  evidence_url: https://www.sec.gov/Archives/edgar/data/944695/000095017025026882/0000950170-25-026882-index.htm

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