Denise Lowsley - 24 Feb 2026 Form 4 Insider Report for HANOVER INSURANCE GROUP, INC. (THG)

Role
Executive Vice President
Signature
/s/ Lindsay L. Katz pursuant to Confirming Statement
Issuer symbol
THG
Transactions as of
24 Feb 2026
Net transactions value
$0
Form type
4
Filing time
26 Feb 2026, 16:44:21 UTC
Previous filing
29 Dec 2025
Next filing
02 Mar 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Lowsley Denise Executive Vice President C/O THE HANOVER INSURANCE GROUP, INC., 440 LINCOLN STREET, WORCESTER /s/ Lindsay L. Katz pursuant to Confirming Statement 26 Feb 2026 0001572984

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction THG Common Stock Award $0 +1,154 +32% $0.000000 4,745 24 Feb 2026 Direct F1, F2
transaction THG Common Stock Award $0 +744 +16% $0.000000 5,489 24 Feb 2026 Direct F2, F3
transaction THG Common Stock Award $0 +649 +12% $0.000000 6,138 24 Feb 2026 Direct F2, F4

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction THG Common Stock Option (right to buy) Award $0 +3,094 $0.000000 3,094 24 Feb 2026 Common Stock 3,094 $173.56 Direct F5
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 On February 27, 2023, the Reporting Person was granted performance-based restricted stock units ("PBRSUs") pursuant to the Issuer's 2022 Long-Term Incentive Plan ("2022 LTIP"). These PBRSUs were subject to a performance-based vesting condition related to three-year average adjusted return on equity and a time-based vesting condition, and also provided for the accumulation of dividend equivalent rights. On February 24, 2026, the performance condition for this award was certified at 150% of the target award (as adjusted for accumulated dividend equivalent rights). This award remains subject to the time-based vesting condition and will vest on February 27, 2026.
F2 Includes 68 shares acquired pursuant to The Hanover Insurance Group Inc.'s 2023 Employee Stock Purchase Plan on December 31, 2025.
F3 On February 27, 2023, the Reporting Person was granted PBRSUs pursuant to the Issuer's 2022 LTIP. These PBRSUs were subject to a performance-based vesting condition related to three-year relative total shareholder return and a time-based vesting condition, and also provided for the accumulation of dividend equivalent rights. On February 24, 2026, the performance condition for this award was certified at 100% of the target award (as adjusted for accumulated dividend equivalent rights). This award remains subject to the time-based vesting condition and will vest on February 27, 2026.
F4 Grant of restricted stock units under the Issuer's 2022 LTIP. Such units vest on the third anniversary of the date of grant.
F5 Such options vest as to one-third of the shares on each of the first three anniversaries of the grant date.