John C. Roche - 01 Dec 2025 Form 4 Insider Report for HANOVER INSURANCE GROUP, INC. (THG)

Role: President and CEO, Director
Signature: /s/ Lindsay L. Katz pursuant to Confirming Statement
Issuer symbol: THG
Transactions as of: 01 Dec 2025
Net transactions value: -$71,018
Form type: 4
Filing time: 03 Dec 2025, 16:10:43 UTC
Previous filing: 06 Nov 2025
Next filing: 29 Dec 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Roche John C	President and CEO, Director	C/O THE HANOVER INSURANCE GROUP, INC., 440 LINCOLN STREET, WORCESTER	/s/ Lindsay L. Katz pursuant to Confirming Statement	03 Dec 2025	0001428157

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	THG	Common Stock	Tax liability	$71,018	-382	-0.31%	$185.91	123,715	01 Dec 2025	Direct	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Reflects shares withheld from restricted stock unit awards to cover FICA and related income tax obligations for executives eligible for retirement vesting under the terms of such awards.
F2	Does not include 14,454 shares held by the Reporting Person's spouse.