<SEC-DOCUMENT>0000950170-24-061064-index.html : 20240516 <SEC-HEADER>0000950170-24-061064.hdr.sgml : 20240516 <ACCEPTANCE-DATETIME>20240516160514 ACCESSION NUMBER: 0000950170-24-061064 CONFORMED SUBMISSION TYPE: 8-K PUBLIC DOCUMENT COUNT: 13 CONFORMED PERIOD OF REPORT: 20240514 ITEM INFORMATION: Material Modifications to Rights of Security Holders ITEM INFORMATION: Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year ITEM INFORMATION: Submission of Matters to a Vote of Security Holders ITEM INFORMATION: Financial Statements and Exhibits FILED AS OF DATE: 20240516 DATE AS OF CHANGE: 20240516 FILER: COMPANY DATA: COMPANY CONFORMED NAME: HANOVER INSURANCE GROUP, INC. CENTRAL INDEX KEY: 0000944695 STANDARD INDUSTRIAL CLASSIFICATION: FIRE, MARINE & CASUALTY INSURANCE [6331] ORGANIZATION NAME: 02 Finance IRS NUMBER: 043263626 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 8-K SEC ACT: 1934 Act SEC FILE NUMBER: 001-13754 FILM NUMBER: 24955470 BUSINESS ADDRESS: STREET 1: 440 LINCOLN ST CITY: WORCESTER STATE: MA ZIP: 01653 BUSINESS PHONE: 5088551000 MAIL ADDRESS: STREET 1: 440 LINCOLN ST CITY: WORCESTER STATE: MA ZIP: 01653 FORMER COMPANY: FORMER CONFORMED NAME: ALLMERICA FINANCIAL CORP DATE OF NAME CHANGE: 19950501 </SEC-HEADER> <DOCUMENT> <TYPE>8-K <SEQUENCE>1 <FILENAME>thg-20240514.htm <DESCRIPTION>8-K <TEXT> Document 1 - file: thg-20240514.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-3.1 <SEQUENCE>2 <FILENAME>thg-ex3_1.htm <DESCRIPTION>EX-3.1 <TEXT> Document 2 - file: thg-ex3_1.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-3.2 <SEQUENCE>3 <FILENAME>thg-ex3_2.htm <DESCRIPTION>EX 3.2 <TEXT> Document 3 - file: thg-ex3_2.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.SCH <SEQUENCE>4 <FILENAME>thg-20240514.xsd <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA WITH EMBEDDED LINKBASES DOCUMENT <TEXT> Document 4 - file: thg-20240514.xsd
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>6 <FILENAME>R1.htm <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 6 - file: R1.htm
</DOCUMENT> <DOCUMENT> <TYPE>EXCEL <SEQUENCE>7 <FILENAME>Financial_Report.xlsx <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 7 - file: Financial_Report.xlsx
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>8 <FILENAME>Show.js <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 8 - file: Show.js
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>9 <FILENAME>report.css <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 9 - file: report.css
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>11 <FILENAME>FilingSummary.xml <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 11 - file: FilingSummary.html
Document 11 - RAW XML: FilingSummary.xml
</DOCUMENT> <DOCUMENT> <TYPE>JSON <SEQUENCE>13 <FILENAME>MetaLinks.json <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 13 - file: MetaLinks.json
</DOCUMENT> <DOCUMENT> <TYPE>ZIP <SEQUENCE>14 <FILENAME>0000950170-24-061064-xbrl.zip <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 14 - file: 0000950170-24-061064-xbrl.zip
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>16 <FILENAME>thg-20240514_htm.xml <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 16 - file: thg-20240514_htm.html
Document 16 - RAW XML: thg-20240514_htm.xml
</DOCUMENT> </SEC-DOCUMENT>