---
schema_version: "secwatch.filing_event.v1"
accession: "0001564590-21-048568"
form_type: "8-K"
ticker: "THG"
cik: "0000944695"
company_name: "HANOVER INSURANCE GROUP, INC."
filed_at: "2021-09-22T23:59:59+00:00"
generated_at: "2026-06-29T02:11:40.059431+00:00"
event_type: "earnings"
sentiment: "negative"
materiality_score: 0.8
calibrated_materiality_score: 0.8
confidence: "high"
source: SEC EDGAR
---

# Hanover estimates Q3 catastrophe losses $150-165M pre-tax; driven by Hurricane Ida

## Summary
- Preliminary Q3 catastrophe loss estimate $150-165M pre-tax ($119-130M after-tax), $97M above load.
- Hurricane Ida contributes ~$75M pre-tax losses, mainly in Northeast and Gulf/Mid-Atlantic regions.
- 18 industry catastrophe events in Jul-Aug impacted company's footprint along with Ida.
- Q3 full results due Oct 27 after close; virtual investor day on Sep 23.

## SEC filing metadata
- accession: 0001564590-21-048568
- form_type: 8-K
- ticker: THG
- cik: 0000944695
- company_name: HANOVER INSURANCE GROUP, INC.
- filed_at: 2021-09-22T23:59:59+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/944695/000156459021048568/0001564590-21-048568-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/944695/000156459021048568/thg-8k_20210922.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001564590-21-048568
- JSON: https://secwatch.observer/filing/0001564590-21-048568.json
- Plain text: https://secwatch.observer/filing/0001564590-21-048568.txt

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