THG

SEC source: 0001062993-25-003668 · form4.xml · derivative · entry 4

Salvatore Bryan J · CIK 0001709075 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,139

Underlying: Common Stock · 8,139 shares

Expires 2035-02-25

F4 · derivative.exercise_date: Such options vest as to one-third of the shares on each of the first three anniversaries of the grant date.

SEC source: 0001062993-25-003668 · form4.xml · nonDerivative · entry 3

Salvatore Bryan J · CIK 0001709075 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,670.819

F3 · kind: Grant of restricted stock units under the Issuer's 2022 Long-Term Incentive Plan. Such units vest on the third anniversary of the date of grant.

SEC source: 0001062993-25-003666 · form4.xml · derivative · entry 4

Kerrigan Dennis Francis · CIK 0001799888 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,954

Underlying: Common Stock · 4,954 shares

Expires 2035-02-25

F4 · derivative.exercise_date: Such options vest as to one-third of the shares on each of the first three anniversaries of the grant date.

SEC source: 0001062993-25-003666 · form4.xml · nonDerivative · entry 3

Kerrigan Dennis Francis · CIK 0001799888 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,157.418

F3 · kind: Grant of restricted stock units under the Issuer's 2022 Long-Term Incentive Plan. Such units vest on the third anniversary of the date of grant.

SEC source: 0001062993-25-003665 · form4.xml · derivative · entry 4

Roche John C · CIK 0001428157 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 39,629

Underlying: Common Stock · 39,629 shares

Expires 2035-02-25

F5 · derivative.exercise_date: Such options vest as to one-third of the shares on each of the first three anniversaries of the grant date.

SEC source: 0001062993-25-003665 · form4.xml · nonDerivative · entry 3

Roche John C · CIK 0001428157 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 125,764.333

F4 · kind: Grant of restricted stock units under the Issuer's 2022 Long-Term Incentive Plan. Such units vest on the third anniversary of the date of grant.

F2 · balance_after: Does not include 14,454 shares held by the Reporting Person's spouse.

SEC source: 0001062993-25-003662 · form4.xml · derivative · entry 4

FARBER JEFFREY M · CIK 0001275634 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,154

Underlying: Common Stock · 14,154 shares

Expires 2035-02-25

F4 · derivative.exercise_date: Such options vest as to one-third of the shares on each of the first three anniversaries of the grant date.

SEC source: 0001062993-25-003662 · form4.xml · nonDerivative · entry 3

FARBER JEFFREY M · CIK 0001275634 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 49,522.155

F3 · kind: Grant of restricted stock units under the Issuer's 2022 Long-Term Incentive Plan. Such units vest on the third anniversary of the date of grant.

SEC source: 0001062993-25-003660 · form4.xml · derivative · entry 4

Lowsley Denise · CIK 0001572984 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,185

Underlying: Common Stock · 3,185 shares

Expires 2035-02-25

F5 · derivative.exercise_date: Such options vest as to one-third of the shares on each of the first three anniversaries of the grant date.

SEC source: 0001062993-25-003660 · form4.xml · nonDerivative · entry 3

Lowsley Denise · CIK 0001572984 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,853.71

F4 · kind: Grant of restricted stock units under the Issuer's 2022 Long-Term Incentive Plan. Such units vest on the third anniversary of the date of grant.

F2 · ownership.direct: Includes 80 shares acquired pursuant to The Hanover's Insurance Group Inc.'s 2023 Employee Stock Purchase Plan on December 31, 2025.

SEC source: 0001062993-25-003661 · form4.xml · derivative · entry 2

LOVELY DAVID JOHN · CIK 0001958694 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,539

Underlying: Common Stock · 3,539 shares

Expires 2035-02-25

F2 · derivative.exercise_date: Such options vest as to one-third of the shares on each of the first three anniversaries of the grant date.

SEC source: 0001062993-25-003661 · form4.xml · nonDerivative · entry 1

LOVELY DAVID JOHN · CIK 0001958694 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,242.447

F1 · kind: Grant of restricted stock units under the Issuer's 2022 Long-Term Incentive Plan. Such units vest on the third anniversary of the date of grant.

SEC source: 0001062993-25-003671 · form4.xml · nonDerivative · entry 2

Lee Willard T · CIK 0001843620 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,439.324

F2 · kind: On February 28, 2022, the Reporting Person was granted PBRSUs pursuant to the Issuer's 2014 Long-Term Incentive Plan. 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, 2025, the performance condition for this award was certified at 25% 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 28, 2025.

SEC source: 0001062993-25-003671 · form4.xml · nonDerivative · entry 1

Lee Willard T · CIK 0001843620 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,284.324

F1 · kind: On February 28, 2022, the Reporting Person was granted performance-based restricted stock units ("PBRSUs") pursuant to the Issuer's 2014 Long-Term Incentive Plan. 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, 2025, the performance condition for this award was certified at 125% 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 28, 2025.

SEC source: 0001062993-25-003669 · form4.xml · nonDerivative · entry 2

LAVEY RICHARD W · CIK 0001275977 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 38,915.752

F2 · kind: On February 28, 2022, the Reporting Person was granted PBRSUs pursuant to the Issuer's 2014 Long-Term Incentive Plan. 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, 2025, the performance condition for this award was certified at 25% 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 28, 2025.

SEC source: 0001062993-25-003669 · form4.xml · nonDerivative · entry 1

LAVEY RICHARD W · CIK 0001275977 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 38,518.752

F1 · kind: On February 28, 2022, the Reporting Person was granted performance-based restricted stock units ("PBRSUs") pursuant to the Issuer's 2014 Long-Term Incentive Plan. 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, 2025, the performance condition for this award was certified at 125% 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 28, 2025.

SEC source: 0001062993-25-003668 · form4.xml · nonDerivative · entry 2

Salvatore Bryan J · CIK 0001709075 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,893.819

F2 · kind: On February 28, 2022, the Reporting Person was granted PBRSUs pursuant to the Issuer's 2014 Long-Term Incentive Plan. 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, 2025, the performance condition for this award was certified at 25% 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 28, 2025.

SEC source: 0001062993-25-003668 · form4.xml · nonDerivative · entry 1

Salvatore Bryan J · CIK 0001709075 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,540.819

F1 · kind: On February 28, 2022, the Reporting Person was granted performance-based restricted stock units ("PBRSUs") pursuant to the Issuer's 2014 Long-Term Incentive Plan. 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, 2025, the performance condition for this award was certified at 125% 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 28, 2025.

SEC source: 0001062993-25-003666 · form4.xml · nonDerivative · entry 2

Kerrigan Dennis Francis · CIK 0001799888 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,075.418

F2 · kind: On February 28, 2022, the Reporting Person was granted PBRSUs pursuant to the Issuer's 2014 Long-Term Incentive Plan. 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, 2025, the performance condition for this award was certified at 25% 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 28, 2025.

SEC source: 0001062993-25-003666 · form4.xml · nonDerivative · entry 1

Kerrigan Dennis Francis · CIK 0001799888 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,832.418

F1 · kind: On February 28, 2022, the Reporting Person was granted performance-based restricted stock units ("PBRSUs") pursuant to the Issuer's 2014 Long-Term Incentive Plan. 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, 2025, the performance condition for this award was certified at 125% 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 28, 2025.

SEC source: 0001062993-25-003665 · form4.xml · nonDerivative · entry 2

Roche John C · CIK 0001428157 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 117,112.333

F3 · kind: On February 28, 2022, the Reporting Person was granted PBRSUs pursuant to the Issuer's 2014 Long-Term Incentive Plan. 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, 2025, the performance condition for this award was certified at 25% 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 28, 2025.

F2 · balance_after: Does not include 14,454 shares held by the Reporting Person's spouse.

SEC source: 0001062993-25-003665 · form4.xml · nonDerivative · entry 1

Roche John C · CIK 0001428157 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 115,368.333

F1 · kind: On February 28, 2022, the Reporting Person was granted performance-based restricted stock units ("PBRSUs") pursuant to the Issuer's 2014 Long-Term Incentive Plan. 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, 2025, the performance condition for this award was certified at 125% 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 28, 2025.

F2 · balance_after: Does not include 14,454 shares held by the Reporting Person's spouse.

SEC source: 0001062993-25-003662 · form4.xml · nonDerivative · entry 2

FARBER JEFFREY M · CIK 0001275634 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 46,432.155

F2 · kind: On February 28, 2022, the Reporting Person was granted PBRSUs pursuant to the Issuer's 2014 Long-Term Incentive Plan. 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, 2025, the performance condition for this award was certified at 25% 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 28, 2025.

SEC source: 0001062993-25-003662 · form4.xml · nonDerivative · entry 1

FARBER JEFFREY M · CIK 0001275634 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 45,705.155

F1 · kind: On February 28, 2022, the Reporting Person was granted performance-based restricted stock units ("PBRSUs") pursuant to the Issuer's 2014 Long-Term Incentive Plan. 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, 2025, the performance condition for this award was certified at 125% 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 28, 2025.

SEC source: 0001062993-25-003660 · form4.xml · nonDerivative · entry 2

Lowsley Denise · CIK 0001572984 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,157.71

F3 · kind: On February 28, 2022, the Reporting Person was granted PBRSUs pursuant to the Issuer's 2014 Long-Term Incentive Plan. 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, 2025, the performance condition for this award was certified at 25% 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 28, 2025.

F2 · ownership.direct: Includes 80 shares acquired pursuant to The Hanover's Insurance Group Inc.'s 2023 Employee Stock Purchase Plan on December 31, 2025.

SEC source: 0001062993-25-003660 · form4.xml · nonDerivative · entry 1

Lowsley Denise · CIK 0001572984 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,991.71

F1 · kind: On February 28, 2022, the Reporting Person was granted performance-based restricted stock units ("PBRSUs") pursuant to the Issuer's 2014 Long-Term Incentive Plan. 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, 2025, the performance condition for this award was certified at 125% 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 28, 2025.

F2 · ownership.direct: Includes 80 shares acquired pursuant to The Hanover's Insurance Group Inc.'s 2023 Employee Stock Purchase Plan on December 31, 2025.

SEC source: 0001062993-25-003658 · form4.xml · nonDerivative · entry 2

BARNES WARREN E. · CIK 0001269358 · SVP & Princpl. Accntg. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,264.996

F2 · kind: On February 28, 2022, the Reporting Person was granted PBRSUs pursuant to the Issuer's 2014 Long-Term Incentive Plan. 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, 2025, the performance condition for this award was certified at 25% 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 28, 2025.

SEC source: 0001062993-25-003658 · form4.xml · nonDerivative · entry 1

BARNES WARREN E. · CIK 0001269358 · SVP & Princpl. Accntg. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,225.996

F1 · kind: On February 28, 2022, the Reporting Person was granted performance-based restricted stock units ("PBRSUs") pursuant to the Issuer's 2014 Long-Term Incentive Plan. 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, 2025, the performance condition for this award was certified at 125% 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 28, 2025.

SEC source: 0001062993-25-000832 · form4.xml · nonDerivative · entry 2

LANE KATHY S · CIK 0001203089 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,926

F1 · kind: Change of ownership from indirect to direct pursuant to the terms of a deferral agreement for stock previously awarded (but deferred) under the Issuer's 2014 Long-Term Incentive Plan or 2022 Long-Term Incentive Plan, as applicable.

F1 · price: Change of ownership from indirect to direct pursuant to the terms of a deferral agreement for stock previously awarded (but deferred) under the Issuer's 2014 Long-Term Incentive Plan or 2022 Long-Term Incentive Plan, as applicable.

SEC source: 0001062993-25-000832 · form4.xml · nonDerivative · entry 1

LANE KATHY S · CIK 0001203089 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Deferral Agreement

Disclosed balance after: 3,852

F1 · kind: Change of ownership from indirect to direct pursuant to the terms of a deferral agreement for stock previously awarded (but deferred) under the Issuer's 2014 Long-Term Incentive Plan or 2022 Long-Term Incentive Plan, as applicable.

F1 · price: Change of ownership from indirect to direct pursuant to the terms of a deferral agreement for stock previously awarded (but deferred) under the Issuer's 2014 Long-Term Incentive Plan or 2022 Long-Term Incentive Plan, as applicable.

SEC source: 0001062993-24-021276 · form4.xml · nonDerivative · entry 1

BARNES WARREN E. · CIK 0001269358 · SVP & Princpl. Accntg. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,013.996

F1 · kind: Grant of restricted stock units ("RSUs") under the Issuer's 2022 Long-Term Incentive Plan ("2022 LTIP") in connection with the accrual of dividend equivalent rights associated with RSUs previously granted under the Issuer's 2022 LTIP or 2014 Long-Term Incentive Plan, as applicable. Such RSUs vest on the third anniversary of the date of grant of the original underlying RSUs.

SEC source: 0001062993-24-021275 · form4.xml · nonDerivative · entry 1

Lee Willard T · CIK 0001843620 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,438.324

F1 · kind: Grant of restricted stock units ("RSUs") under the Issuer's 2022 Long-Term Incentive Plan ("2022 LTIP") in connection with the accrual of dividend equivalent rights associated with RSUs previously granted under the Issuer's 2022 LTIP or 2014 Long-Term Incentive Plan, as applicable. Such RSUs vest on the third anniversary of the date of grant of the original underlying RSUs.

SEC source: 0001062993-24-021274 · form4.xml · nonDerivative · entry 1

Roche John C · CIK 0001428157 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 105,814.333

F1 · kind: Grant of restricted stock units ("RSUs") under the Issuer's 2022 Long-Term Incentive Plan ("2022 LTIP") in connection with the accrual of dividend equivalent rights associated with RSUs previously granted under the Issuer's 2022 LTIP or 2014 Long-Term Incentive Plan, as applicable. Such RSUs vest on the third anniversary of the date of grant of the original underlying RSUs.

F2 · balance_after: Does not include 14,454 shares held indirectly by the Reporting Person's spouse.

SEC source: 0001062993-24-021273 · form4.xml · nonDerivative · entry 1

Salvatore Bryan J · CIK 0001709075 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,609.819

F1 · kind: Grant of restricted stock units ("RSUs") under the Issuer's 2022 Long-Term Incentive Plan ("2022 LTIP") in connection with the accrual of dividend equivalent rights associated with RSUs previously granted under the Issuer's 2022 LTIP or 2014 Long-Term Incentive Plan, as applicable. Such RSUs vest on the third anniversary of the date of grant of the original underlying RSUs.

SEC source: 0001062993-24-021272 · form4.xml · nonDerivative · entry 1

Lowsley Denise · CIK 0001572984 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,006.71

F1 · kind: Grant of restricted stock units ("RSUs") under the Issuer's 2022 Long-Term Incentive Plan ("2022 LTIP") in connection with the accrual of dividend equivalent rights associated with RSUs previously granted under the Issuer's 2022 LTIP or 2014 Long-Term Incentive Plan, as applicable. Such RSUs vest on the third anniversary of the date of grant of the original underlying RSUs.

SEC source: 0001062993-24-021271 · form4.xml · nonDerivative · entry 1

Kerrigan Dennis Francis · CIK 0001799888 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,504.418

F1 · kind: Grant of restricted stock units ("RSUs") under the Issuer's 2022 Long-Term Incentive Plan ("2022 LTIP") in connection with the accrual of dividend equivalent rights associated with RSUs previously granted under the Issuer's 2022 LTIP or 2014 Long-Term Incentive Plan, as applicable. Such RSUs vest on the third anniversary of the date of grant of the original underlying RSUs.

SEC source: 0001062993-24-021270 · form4.xml · nonDerivative · entry 1

LOVELY DAVID JOHN · CIK 0001958694 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,469.447

F1 · kind: Grant of restricted stock units ("RSUs") under the Issuer's 2022 Long-Term Incentive Plan ("2022 LTIP") in connection with the accrual of dividend equivalent rights associated with RSUs previously granted under the Issuer's 2022 LTIP. Such RSUs vest on the third anniversary of the date of grant of the original underlying RSUs.

SEC source: 0001062993-24-021269 · form4.xml · nonDerivative · entry 1

FARBER JEFFREY M · CIK 0001275634 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 41,724.155

F1 · kind: Grant of restricted stock units ("RSUs") under the Issuer's 2022 Long-Term Incentive Plan ("2022 LTIP") in connection with the accrual of dividend equivalent rights associated with RSUs previously granted under the Issuer's 2022 LTIP or 2014 Long-Term Incentive Plan, as applicable. Such RSUs vest on the third anniversary of the date of grant of the original underlying RSUs.

SEC source: 0001062993-24-021268 · form4.xml · nonDerivative · entry 1

LAVEY RICHARD W · CIK 0001275977 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 36,346.752

F1 · kind: Grant of restricted stock units ("RSUs") under the Issuer's 2022 Long-Term Incentive Plan ("2022 LTIP") in connection with the accrual of dividend equivalent rights associated with RSUs previously granted under the Issuer's 2022 LTIP or 2014 Long-Term Incentive Plan, as applicable. Such RSUs vest on the third anniversary of the date of grant of the original underlying RSUs.

SEC source: 0001062993-24-020060 · form4.xml · nonDerivative · entry 1

Roche John C · CIK 0001428157 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 105,671.026

F1 · kind: Reflects shares withheld from a restricted stock unit award to cover FICA and related income tax obligations for executives eligible for retirement vesting under the terms of such award.

F2 · balance_after: Does not include 14,454 shares held indirectly by the Reporting Person's spouse.

SEC source: 0001062993-24-020059 · form4.xml · nonDerivative · entry 1

BARNES WARREN E. · CIK 0001269358 · SVP & Princpl. Accntg. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,002.319

F1 · kind: Reflects shares withheld from a restricted stock unit award to cover FICA and related income tax obligations for executives eligible for retirement vesting under the terms of such award.

SEC source: 0001062993-24-020058 · form4.xml · nonDerivative · entry 1

FARBER JEFFREY M · CIK 0001275634 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 41,668.594

F1 · kind: 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.

SEC source: 0001062993-24-019867 · form4.xml · nonDerivative · entry 2

FARBER JEFFREY M · CIK 0001275634 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 42,090.594

F1 · kind: The sale of shares was effected pursuant to a Rule 10b5-1 Trading Plan adopted by the reporting person on February 16, 2023 and intended to comply with the prior version of the rule.

F2 · price: The price reported in Column 4 is a weighted average price. The shares were sold at multiple prices ranging from $165 to $165.955. The Reporting Person undertakes to provide The Hanover Insurance Group, Inc. ("THG"), any security holder of THG, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.

SEC source: 0001062993-24-019867 · form4.xml · nonDerivative · entry 1

FARBER JEFFREY M · CIK 0001275634 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 49,040.594

F1 · kind: The sale of shares was effected pursuant to a Rule 10b5-1 Trading Plan adopted by the reporting person on February 16, 2023 and intended to comply with the prior version of the rule.

SEC source: 0001062993-24-019696 · form4.xml · nonDerivative · entry 1

FARBER JEFFREY M · CIK 0001275634 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 49,077.594

F1 · kind: The sale of shares was effected pursuant to a Rule 10b5-1 Trading Plan adopted by the reporting person on February 16, 2023 and intended to comply with the prior version of the rule.

SEC source: 0001062993-24-019405 · form4.xml · nonDerivative · entry 1

Lowsley Denise · CIK 0001572984 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,993.44

F1 · price: The price reported in Column 4 is a weighted average price. The shares were sold at multiple prices ranging from $162.23 to $162.59. The Reporting Person undertakes to provide The Hanover Insurance Group, Inc. ("THG"), any security holder of THG, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.

SEC source: 0001062993-24-019404 · form4.xml · nonDerivative · entry 1

FARBER JEFFREY M · CIK 0001275634 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 49,177.594

F1 · kind: The sale of shares was effected pursuant to a Rule 10b5-1 Trading Plan adopted by the reporting person on February 16, 2023 and intended to comply with the prior version of the rule.

F2 · price: The price reported in Column 4 is a weighted average price. The shares were sold at multiple prices ranging from $165 to $165.275. The Reporting Person undertakes to provide The Hanover Insurance Group, Inc. ("THG"), any security holder of THG, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.

SEC source: 0001062993-24-018913 · form4.xml · nonDerivative · entry 4

FARBER JEFFREY M · CIK 0001275634 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 54,090.594

F1 · kind: The sale of shares was effected pursuant to a Rule 10b5-1 Trading Plan adopted by the reporting person on February 16, 2023 and intended to comply with the prior version of the rule.

F5 · price: The price reported in Column 4 is a weighted average price. The shares were sold at multiple prices ranging from $162.84 to $163.46. The Reporting Person undertakes to provide THG, any security holder of THG, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.

SEC source: 0001062993-24-018913 · form4.xml · nonDerivative · entry 3

FARBER JEFFREY M · CIK 0001275634 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 55,668.594

F1 · kind: The sale of shares was effected pursuant to a Rule 10b5-1 Trading Plan adopted by the reporting person on February 16, 2023 and intended to comply with the prior version of the rule.

F4 · price: The price reported in Column 4 is a weighted average price. The shares were sold at multiple prices ranging from $161.83 to $162.80. The Reporting Person undertakes to provide THG, any security holder of THG, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.

SEC source: 0001062993-24-018913 · form4.xml · nonDerivative · entry 2

FARBER JEFFREY M · CIK 0001275634 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 59,766.594

F1 · kind: The sale of shares was effected pursuant to a Rule 10b5-1 Trading Plan adopted by the reporting person on February 16, 2023 and intended to comply with the prior version of the rule.

F3 · price: The price reported in Column 4 is a weighted average price. The shares were sold at multiple prices ranging from $160.75 to $161.74. The Reporting Person undertakes to provide THG, any security holder of THG, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.