SCHEDULE VI SUPPLEMENTAL INFORMATION CONCERNING PROPERTY AND CASUALTY INSURANCE OPERATIONS

12 Months Ended

Dec. 31, 2023

SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters [Abstract]

SCHEDULE VI SUPPLEMENTAL INFORMATION CONCERNING PROPERTY AND CASUALTY INSURANCE OPERATIONS

SCHEDULE VI

THE HANOVER INSURANCE GROUP, INC.

SUPPLEMENTAL INFORMATION CONCERNING PROPERTY AND CASUALTY INSURANCE OPERATIONS

YEARS ENDED DECEMBER 31
(in millions)
Affiliation with Registrant	Deferred acquisition costs		Reserves for unpaid claims and claim adjustment expenses (1)		Discount, if any, deducted from previous column (2)		Unearned premiums (1)
Consolidated Property and Casualty Subsidiaries
2023	$	620.8	$	7,308.1	$	—	$	3,102.5
2022	$	604.8	$	7,012.6	$	—	$	2,954.2

	Earned premiums		Net investment income		Claims and claim adjustment expenses incurred related to					Amortization of deferred acquisition costs		Paid claims and claim adjustment expenses		Premiums written
					Current year		Prior years
2023	$	5,663.1	$	332.1	$	4,150.5	$	(15.9	)	$	1,176.0	$	3,885.5	$	5,810.2
2022	$	5,252.3	$	296.3	$	3,656.0	$	(32.6	)	$	1,093.2	$	3,113.2	$	5,476.5
2021	$	4,770.2	$	310.7	$	3,205.3	$	(71.1	)	$	982.7	$	2,762.8	$	4,993.4

(1)Reserves for unpaid claims and claim adjustment expenses are shown gross of $1,795.0 million and $1,748.6 million of reinsurance recoverable on unpaid losses in 2023 and 2022, respectively. Unearned premiums are shown gross of prepaid premiums of $99.1 million and $104.9 million in 2023 and 2022, respectively. Reserves for unpaid claims and claims adjustment expense also include policyholder dividends.

(2)The Company does not use discounting techniques.