Hanover Insurance Group, Inc. SEC filings THG
Hanover Insurance Group, Inc. has 1,000 filings in SEC EDGAR's recent list, going back to Aug 28, 2017. Its latest annual report, Form ARS, was filed on Mar 26, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Oct 29, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Oct 28, 2026 (results of operations). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 424B2 | Prospectus | Aug 20, 2025 | — |
| FWP | Free writing prospectus | Aug 19, 2025 | — |
| 424B2 | Prospectus | Aug 19, 2025 | — |
| S-3ASR | Automatic shelf registration | Aug 18, 2025 | — |
| S-8 POS | Filing | Aug 6, 2024 | — |
| S-8 | Employee stock plan registration | Jun 22, 2023 | — |
| S-8 | Employee stock plan registration | May 12, 2022 | — |
| 424B2 | Prospectus | Aug 20, 2020 | — |
| FWP | Free writing prospectus | Aug 19, 2020 | — |
| 424B2 | Prospectus | Aug 19, 2020 | — |
| S-3ASR | Automatic shelf registration | Aug 17, 2020 | — |
Showing 11 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
New to this? Read What Are SEC Filings? 10-K, 10-Q, 8-K and Other Forms Explained.
Company profile
- Industry
- Fire, Marine & Casualty Insurance (SIC 6331)
- Listed as
- THG (NYSE)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Worcester, MA
- SEC filer status
- Large accelerated filer
- SEC CIK
- 944695
- Former names
- ALLMERICA FINANCIAL CORP (until Nov 14, 2005)
Other Fire, Marine & Casualty Insurance companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.