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HANOVER INSURANCE GROUP, INC. — 10-K Filings

30 10-K filings on record

This page lists all 10-K filings submitted to the SEC by HANOVER INSURANCE GROUP, INC. (THG), sorted by most recent first. Each row links to the full filing on EdgarLookup. HANOVER INSURANCE GROUP, INC. has filed 30 10-K documents with the SEC since 2016. To view all SEC filings by HANOVER INSURANCE GROUP, INC., see the full filings list.

Overview All Filings Financials Insiders
All 10-K 10-K/A 10-Q 10-Q/A 11-K 13F-HR 13F-HR/A 13F-NT 144 15-12B 25-NSE 3 3/A 305B2 4 4/A 424B2 5 5/A 8-A12B 8-A12B/A 8-K 8-K/A ARS CERTNYS CORRESP DEF 14A DEF13E3/A DEFA14A FWP IRANNOTICE PRE 14A PRE13E3 PRE13E3/A S-3ASR S-4 S-4/A S-8 S-8 POS SC 13D SC 13D/A SC 13E3 SC 13E3/A SC 13G SC 13G/A SC 14D1 SC 14D1/A SCHEDULE 13G/A UPLOAD
Form Description Accession Number Filed Period
10-K 10-K 0001193125-26-060983 Feb 20, 2026 Dec 31, 2025
10-K 10-K 0000950170-25-025093 Feb 24, 2025 Dec 31, 2024
10-K 10-K 0000950170-24-018917 Feb 22, 2024 Dec 31, 2023
10-K 10-K 0000950170-23-004178 Feb 23, 2023 Dec 31, 2022
10-K 10-K 0001564590-22-006789 Feb 25, 2022 Dec 31, 2021
10-K 10-K 0001564590-21-007746 Feb 24, 2021 Dec 31, 2020
10-K 10-K 0001564590-20-006025 Feb 24, 2020 Dec 31, 2019
10-K 10-K 0001564590-19-003788 Feb 22, 2019 Dec 31, 2018
10-K 10-K 0001564590-18-003531 Feb 27, 2018 Dec 31, 2017
10-K 10-K 0000944695-17-000020 Feb 22, 2017 Dec 31, 2016
10-K 10-K 0000944695-16-000135 Feb 25, 2016 Dec 31, 2015
10-K 10-K 0000944695-15-000020 Feb 24, 2015 Dec 31, 2014
10-K FORM 10-K 0001193125-14-066031 Feb 25, 2014 Dec 31, 2013
10-K FORM 10-K 0001193125-13-075166 Feb 26, 2013 Dec 31, 2012
10-K 10-K 0001193125-12-086222 Feb 29, 2012 Dec 31, 2011
10-K FORM 10-K 0001193125-12-083502 Feb 24, 2011 Dec 31, 2010
10-K FORM 10-K 0001193125-10-043678 Mar 1, 2010 Dec 31, 2009
10-K FORM 10-K 0001193125-09-040951 Feb 27, 2009 Dec 31, 2008
10-K FORM 10-K 0001193125-08-039342 Feb 27, 2008 Dec 31, 2007
10-K FORM 10-K 0001193125-07-043369 Mar 1, 2007 Dec 31, 2006
10-K FORM 10-K 0001193125-06-056711 Mar 16, 2006 Dec 31, 2005
10-K FORM 10-K 0001193125-05-036571 Feb 25, 2005 Dec 31, 2004
10-K ALLMERICA FINANCIAL FORM 10-K 0001193125-04-037515 Mar 10, 2004 Dec 31, 2003
10-K FORM 10-K 0000927016-03-001434 Mar 27, 2003 Dec 31, 2002
10-K FORM 10-K FOR 12/31/2001 0000927016-02-001824 Apr 1, 2002 Dec 31, 2001
10-K FORM 10-K 0000927016-01-001663 Apr 2, 2001 Dec 31, 2000
10-K FORM 10-K 0000927016-00-001078 Mar 30, 2000 Dec 31, 1999
10-K FORM 10-K 0000927016-99-001189 Mar 29, 1999 Dec 31, 1998
10-K FORM 10-K 0000927016-98-001218 Mar 27, 1998 Dec 31, 1997
10-K FORM 10-K 0000927016-97-000864 Mar 24, 1997 Dec 31, 1996