Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0001193125-26-060983
Filing Date
2026-02-20
Accepted
2026-02-20 13:43:12
Documents
142
Period of Report
2025-12-31

Document Format Files

Seq Description Document Type Size
1 10-K thg-20251231.htm   iXBRL 10-K 12988247
2 EX-4.14 thg-ex4_14.htm EX-4.14 30424
3 EX-10.2 thg-ex10_2.htm EX-10.2 2026951
4 EX-10.3 thg-ex10_3.htm EX-10.3 661158
5 EX-21 thg-ex21.htm EX-21 22210
6 EX-23 thg-ex23.htm EX-23 4435
7 EX-24 thg-ex24.htm EX-24 55356
8 EX-31.1 thg-ex31_1.htm EX-31.1 16098
9 EX-31.2 thg-ex31_2.htm EX-31.2 15831
10 EX-32.1 thg-ex32_1.htm EX-32.1 10482
11 EX-32.2 thg-ex32_2.htm EX-32.2 11524
12 GRAPHIC gfx96133587_0.gif GRAPHIC 1021
13 GRAPHIC gfx95210066_0.gif GRAPHIC 1021
  Complete submission text file 0001193125-26-060983.txt   58198769

Data Files

Seq Description Document Type Size
14 XBRL TAXONOMY EXTENSION SCHEMA WITH EMBEDDED LINKBASES DOCUMENT thg-20251231.xsd EX-101.SCH 3270284
145 EXTRACTED XBRL INSTANCE DOCUMENT thg-20251231_htm.xml XML 17111326
Mailing Address 440 LINCOLN ST WORCESTER MA 01653
Business Address 440 LINCOLN ST WORCESTER MA 01653 5088551000
HANOVER INSURANCE GROUP, INC. (Filer) CIK: 0000944695 (see all company filings)

EIN.: 043263626 | State of Incorp.: DE | Fiscal Year End: 1231
Type: 10-K | Act: 34 | File No.: 001-13754 | Film No.: 26658484
SIC: 6331 Fire, Marine & Casualty Insurance
(CF Office: 02 Finance)