| 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 | 26 Feb 2026 | 0001428157 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | THG | Common Stock | Award | $0 | +13,254 | +11% | $0.000000 | 137,103 | 24 Feb 2026 | Direct | F1, F2 |
| transaction | THG | Common Stock | Award | $0 | +8,540 | +6.2% | $0.000000 | 145,643 | 24 Feb 2026 | Direct | F2, F3 |
| transaction | THG | Common Stock | Award | $0 | +9,435 | +6.5% | $0.000000 | 155,078 | 24 Feb 2026 | Direct | F2, F4 |
| 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 | +45,025 | $0.000000 | 45,025 | 24 Feb 2026 | Common Stock | 45,025 | $173.56 | Direct | F5 |
| 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 | Does not include 14,454 shares held by the Reporting Person's spouse. |
| 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. |