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HANOVER INSURANCE GROUP, INC. — 424B2 Filings

12 424B2 filings on record

This page lists all 424B2 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 12 424B2 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
424B2 424B2 0001193125-25-184169 Aug 20, 2025
424B2 424B2 0001193125-25-183091 Aug 19, 2025
424B2 424B2 0001193125-20-225688 Aug 20, 2020
424B2 424B2 0001193125-20-224255 Aug 19, 2020
424B2 424B2 0001193125-16-532332 Apr 6, 2016
424B2 424B2 0001193125-16-530169 Apr 5, 2016
424B2 FORM 424(B)(2) 0001193125-13-119626 Mar 21, 2013
424B2 PROSPECTUS SUPPLEMENT 0001193125-13-116342 Mar 20, 2013
424B2 424B2 0001193125-11-165801 Jun 15, 2011
424B2 424B2 0001193125-11-164359 Jun 14, 2011
424B2 424B2 0001193125-10-035195 Feb 19, 2010
424B2 424B2 0001193125-10-033965 Feb 18, 2010