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 |
|---|---|---|---|
| 13F-NT | Filing | Aug 12, 2026 | Jun 30, 2026 |
| 13F-NT | Filing | May 13, 2026 | Mar 31, 2026 |
| 13F-NT | Filing | Feb 12, 2026 | Dec 31, 2025 |
| 13F-NT | Filing | Nov 10, 2025 | Sep 30, 2025 |
| 25-NSE | Delisting notice | Oct 15, 2025 | — |
| 13F-NT | Filing | Aug 12, 2025 | Jun 30, 2025 |
| 13F-NT | Filing | May 14, 2025 | Mar 31, 2025 |
| 13F-NT | Filing | Feb 11, 2025 | Dec 31, 2024 |
| 13F-NT | Filing | Nov 12, 2024 | Sep 30, 2024 |
| 13F-NT | Filing | Aug 13, 2024 | Jun 30, 2024 |
| 13F-NT | Filing | May 3, 2024 | Mar 31, 2024 |
| 13F-NT | Filing | Feb 9, 2024 | Dec 31, 2023 |
| 13F-NT | Filing | Nov 8, 2023 | Sep 30, 2023 |
| 13F-NT | Filing | Aug 10, 2023 | Jun 30, 2023 |
| 13F-NT | Filing | May 12, 2023 | Mar 31, 2023 |
| 13F-NT | Filing | Feb 9, 2023 | Dec 31, 2022 |
| 13F-NT | Filing | Nov 4, 2022 | Sep 30, 2022 |
| 13F-NT | Filing | Jul 29, 2022 | Jun 30, 2022 |
| 13F-NT | Filing | May 11, 2022 | Mar 31, 2022 |
| 13F-NT | Filing | Feb 7, 2022 | Dec 31, 2021 |
| 13F-NT | Filing | Nov 4, 2021 | Sep 30, 2021 |
| 13F-NT | Filing | Aug 11, 2021 | Jun 30, 2021 |
| 13F-NT | Filing | May 10, 2021 | Mar 31, 2021 |
| 13F-NT | Filing | Feb 16, 2021 | Dec 31, 2020 |
| 13F-NT | Filing | Nov 12, 2020 | Sep 30, 2020 |
| 25-NSE | Delisting notice | Sep 22, 2020 | — |
| 305B2 | Filing | Aug 19, 2020 | — |
| 13F-NT | Filing | Aug 13, 2020 | Jun 30, 2020 |
| UPLOAD | Letter from the SEC | Jul 31, 2020 | — |
| CORRESP | Letter to the SEC | Jul 30, 2020 | — |
| UPLOAD | Letter from the SEC | Jul 16, 2020 | — |
| 13F-NT | Filing | May 14, 2020 | Mar 31, 2020 |
| 13F-NT | Filing | Feb 12, 2020 | Dec 31, 2019 |
| 13F-NT | Filing | Nov 12, 2019 | Sep 30, 2019 |
| 13F-NT | Filing | Aug 7, 2019 | Jun 30, 2019 |
| 13F-NT | Filing | May 7, 2019 | Mar 31, 2019 |
| IRANNOTICE | Filing | Feb 22, 2019 | — |
| 13F-NT | Filing | Feb 13, 2019 | Dec 31, 2018 |
| 13F-NT | Filing | Nov 8, 2018 | Sep 30, 2018 |
| IRANNOTICE | Filing | Nov 1, 2018 | — |
| 13F-NT | Filing | Aug 9, 2018 | Jun 30, 2018 |
| IRANNOTICE | Filing | Aug 6, 2018 | — |
| 13F-NT | Filing | May 9, 2018 | Mar 31, 2018 |
| IRANNOTICE | Filing | May 3, 2018 | — |
| IRANNOTICE | Filing | Feb 27, 2018 | — |
| 13F-NT | Filing | Feb 9, 2018 | Dec 31, 2017 |
| 13F-NT | Filing | Nov 15, 2017 | Sep 30, 2017 |
Showing 47 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.