---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-23-013497"
form_type: "8-K"
ticker: "THG"
cik: "0000944695"
company_name: "HANOVER INSURANCE GROUP, INC."
filed_at: "2023-04-19T23:59:59+00:00"
generated_at: "2026-06-17T00:17:13.902185+00:00"
event_type: "earnings"
sentiment: "negative"
materiality_score: 0.8
calibrated_materiality_score: 0.8
confidence: "high"
source: SEC EDGAR
---

# Hanover estimates Q1 catastrophe losses of $175M pre-tax; CEO calls it break-even quarter

## Summary
- Preliminary Q1 2023 catastrophe loss estimate of $175M pre-tax (12.7 pts of net earned premium).
- Losses from over 20 events: Feb freeze in Northeast/Midwest and March wind/tornadic storms across nearly half the U.S.
- CEO Roche says catastrophe activity turned a 'very solid quarter' into approximately break-even operating results.
- Company accelerating price/deductible increases in property lines and enhancing underwriting and risk prevention.

## SEC filing metadata
- accession: 0000950170-23-013497
- form_type: 8-K
- ticker: THG
- cik: 0000944695
- company_name: HANOVER INSURANCE GROUP, INC.
- filed_at: 2023-04-19T23:59:59+00:00
- event_type: earnings
- sentiment: negative
- materiality_score: 0.8
- calibrated_materiality_score: 0.8
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/944695/000095017023013497/0000950170-23-013497-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/944695/000095017023013497/thg-20230419.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-23-013497
- JSON: https://secwatch.observer/filing/0000950170-23-013497.json
- Plain text: https://secwatch.observer/filing/0000950170-23-013497.txt

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