HANOVER INSURANCE GROUP, INC.

Q: Jun 30 2026

Q: Mar 31 2026

FY: Dec 31 2025

Q: Sep 30 2025

Q: Jun 30 2025

Q: Mar 31 2025

FY: Dec 31 2024

Q: Sep 30 2024

Q: Jun 30 2024

Q: Mar 31 2024

FY: Dec 31 2023

Q: Sep 30 2023

Q: Jun 30 2023

Q: Mar 31 2023

FY: Dec 31 2022

Q: Sep 30 2022

Q: Jun 30 2022

Q: Mar 31 2022

FY: Dec 31 2021

Q: Sep 30 2021

Results of Operations and Financial Condition

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Results of Operations and Financial Condition

Results of Operations and Financial Condition

Regulation FD Disclosure

Results of Operations and Financial Condition

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

Results of Operations and Financial Condition

Submission of Matters to a Vote of Security Holders

Results of Operations and Financial Condition

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Results of Operations and Financial Condition

Results of Operations and Financial Condition

8.01

2.02,9.01

2.02,9.01

3.03,5.03,5.07,9.01

2.02,9.01

Notification of removal from listing and/or registration on a national securities exchange

Prospectus Supplement for Delayed or Continuous Offering

Free Writing Prospectus

Prospectus Supplement for Delayed or Continuous Offering

Automatic Shelf Registration

Post Effective Amendment to S-8

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Notification of removal from listing and/or registration on a national securities exchange

Prospectus Supplement for Delayed or Continuous Offering

Free Writing Prospectus

Prospectus Supplement for Delayed or Continuous Offering

Automatic Shelf Registration

Prospectus Supplement for Delayed or Continuous Offering

Free Writing Prospectus

Prospectus Supplement for Delayed or Continuous Offering

Automatic Shelf Registration

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Registration of Securities on Exchange

Prospectus Supplement for Delayed or Continuous Offering

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Preliminary Proxy Statement

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Carlin Jane D

Bradicich Kevin

Aristeguieta Francisco

Donnell William E.

Condrin J Paul

Bunting Theodore H JR

RAMRATH JOSEPH R

LANE KATHY S

Egan Cynthia

FARBER JEFFREY M

Kerrigan Dennis Francis

LAVEY RICHARD W

Lee Willard T

LOVELY DAVID JOHN

Norton-Gatto Patricia A.

Roche John C

Salvatore Bryan J

Ward Elizabeth A

Lowsley Denise

Kerrigan Dennis Francis

Annual Report Scanned (Paper)

Annual Report Scanned (Paper)

Annual Report Scanned (Paper)

Annual Report Scanned (Paper)

No description available

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

No description available

No description available

No description available

No description available

No description available

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

No description available

Annual Report Scanned (Paper)