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Schedule III Supplementary Insurance Information
 12 Months Ended
Dec. 31, 2025
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Abstract]  
Supplementary Insurance Information, for Insurance Companies Disclosure
SCHEDULE III--SUPPLEMENTARY INSURANCE INFORMATION

Unum Group and Subsidiaries
SegmentDeferred Acquisition Costs
Future Policy Benefits
Policyholders' Account BalancesUnearned Premiums
(in millions of dollars)
December 31, 2025
Unum US$1,208.7 $8,493.4 $665.7 $48.7 
Unum International72.1 2,404.3 — 201.5 
Colonial Life1,639.5 2,032.0 858.9 46.9 
Closed Block— 25,087.3 4,111.8 115.7 
   Total$2,920.3 $38,017.0 $5,636.4 $412.8 
December 31, 2024
Unum US$1,260.6 $8,669.7 $675.7 $51.7 
Unum International53.0 2,163.0 — 165.5 
Colonial Life1,529.2 1,904.2 862.5 45.4 
Closed Block— 24,069.5 4,095.5 121.4 
   Total$2,842.8 $36,806.4 $5,633.7 $384.0 
SCHEDULE III--SUPPLEMENTARY INSURANCE INFORMATION (Continued)

Unum Group and Subsidiaries
SegmentPremium Income
Net Investment Income1
Policy Benefits Including Remeasurement Loss or Gain2
Amortization of Deferred Acquisition Costs
All Other Expenses3
Premiums Written4
(in millions of dollars)
December 31, 2025
Unum US$7,083.5 $604.2 $4,120.4 $283.3 $2,115.2 $4,947.5 
Unum International1,082.8 145.6 767.4 10.7 300.3 613.6 
Colonial Life1,839.1 172.6 876.2 233.1 431.5 1,278.1 
Closed Block825.6 1,016.5 2,301.3 — 313.0 818.8 
Corporate— 93.8 — — 389.6 — 
   Total$10,831.0 $2,032.7 $8,065.3 $527.1 $3,549.6 
December 31, 2024
Unum US$6,883.2 $632.2 $3,864.7 $292.5 $2,011.3 $4,834.0 
Unum International949.5 128.8 656.7 9.5 263.4 581.6 
Colonial Life1,783.9 161.5 804.7 219.0 413.0 1,247.4 
Closed Block880.8 1,148.9 1,591.8 — 243.0 868.1 
Corporate— 58.6 — — 266.4 — 
   Total$10,497.4 $2,130.0 $6,917.9 $521.0 $3,197.1 
December 31, 2023
Unum US$6,579.2 $639.9 $3,808.5 $267.6 $1,879.2 $4,634.3 
Unum International825.2 137.2 579.8 8.4 235.6 544.4 
Colonial Life1,726.1 153.5 798.1 205.4 396.5 1,221.8 
Closed Block915.5 1,066.3 2,070.7 — 246.5 904.2 
Corporate— 99.8 — — 249.5 — 
   Total$10,046.0 $2,096.7 $7,257.1 $481.4 $3,007.3 
1 Net investment income is allocated based upon segmentation. Each segment has its own specifically identified assets and receives the investment income generated by those assets.

2 Included in policy benefits including remeasurement loss or gain were the following:

•In 2025, reserve assumption updates resulting in a net decrease in policy benefits including remeasurement gain or loss in the Unum US, Colonial Life and Unum International segments of $147.7 million, $8.9 million, $5.4 million, respectively, and a net increase in policy benefits including remeasurement gain or loss in the Closed Block segment of $640.5 million.
•In 2024, reserve assumption updates resulting in a net decrease in policy benefits including remeasurement gain or loss in the Unum US, Colonial Life, and Closed Block segments of $143.6 million, $46.0 million, and $175.3 million, respectively, and a net increase in policy benefits including remeasurement gain or loss in the Unum International segment of $7.5 million.
•In 2023, reserve assumption updates resulting in a net decrease in policy benefits including remeasurement gain or loss in the Unum US, and Colonial Life segments of $128.8 million and $80.7 million, respectively, and a net increase in policy benefits including remeasurement gain or loss in the Unum International and Closed Block Segments of $17.9 million and $368.8 million, respectively.
•In 2025, 2024, and 2023 the impact of non-contemporaneous reinsurance of $28.6 million, $25.1 million, and $34.8 million, respectively, in the Closed Block segment. In 2025, the impact of non-contemporaneous reinsurance of $1.0 million in the Unum US segment.
SCHEDULE III--SUPPLEMENTARY INSURANCE INFORMATION (Continued)

Unum Group and Subsidiaries
3 Includes commissions, interest and debt expense, deferral of acquisition costs, compensation expense, and other expenses. Where not directly attributable to a segment, expenses are generally allocated based on activity levels, time information, and usage statistics. Also included in all other expenses were the following:
•In 2025, 2024 and 2023 the amortization of the cost of reinsurance of $116.7 million, $41.4 million, and $44.1 million respectively, in the Closed Block segment.
•In 2025, we incurred an expense related to an accelerated charitable contribution of $20.0 million, in the Corporate segment.
•In 2025, we incurred a settlement loss on the U.S. pension plan annuity purchase of $103.8 million, in the Corporate segment.
•In 2024, we incurred a loss on legal settlement of $15.3 million for the settlement of an employment-related matter, in the Corporate segment.

4 Excludes life insurance.