| Date | Name | Symbol | Type | Security | Shares | Price | Value | Ownership | Reported |
| 09/29/2023 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 15.065 | $0.00 | $0 | | 09/29/2023 |
| 06/30/2023 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 14.687 | $0.00 | $0 | | 06/30/2023 |
| 03/31/2023 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 12.838 | $0.00 | $0 | | 03/31/2023 |
| 02/28/2023 | HANOVER INSURANCE GROUP, INC. | THG | Payment of Exercise | Common Stock | 500 | $139.48 | $69.7k | | 02/27/2023 |
| 02/27/2023 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock Option (right to buy) | 3.2k | $140.01 | $443.8k | | 02/27/2023 |
| 02/27/2023 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 332 | $0.00 | $0 | | 02/27/2023 |
| 02/27/2023 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 244 | $0.00 | $0 | | 02/27/2023 |
| 02/27/2023 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 715 | $0.00 | $0 | | 02/27/2023 |
| 12/30/2022 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 13.947 | $0.00 | $0 | | 12/30/2022 |
| 09/30/2022 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 13.54 | $0.00 | $0 | | 09/30/2022 |
| 06/24/2022 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 11.663 | $0.00 | $0 | | 06/24/2022 |
| 03/25/2022 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 11.465 | $0.00 | $0 | | 03/25/2022 |
| 03/07/2022 | HANOVER INSURANCE GROUP, INC. | THG | Payment of Exercise | Common Stock | 332 | $139.52 | $46.3k | | 03/07/2022 |
| 02/28/2022 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 628 | $0.00 | $0 | | 02/28/2022 |
| 02/28/2022 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock Option (right to buy) | 3.1k | $139.51 | $427.7k | | 02/28/2022 |
| 12/30/2021 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 15.222 | $0.00 | $0 | | 12/30/2021 |
| 09/24/2021 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 13.99 | $0.00 | $0 | | 09/24/2021 |
| 06/25/2021 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 13.409 | $0.00 | $0 | | 06/25/2021 |
| 05/03/2021 | HANOVER INSURANCE GROUP, INC. | THG | Sale | Common Stock | 1.4k | $140.20 | $197.4k | | 05/03/2021 |
| 05/03/2021 | HANOVER INSURANCE GROUP, INC. | THG | Sale | Common Stock | 1.3k | $140.23 | $182.2k | | 05/03/2021 |
| 05/03/2021 | HANOVER INSURANCE GROUP, INC. | THG | Exercise | Common Stock Option (right to buy) | 1.4k | $117.22 | $165k | | 05/03/2021 |
| 05/03/2021 | HANOVER INSURANCE GROUP, INC. | THG | Exercise | Common Stock Option (right to buy) | 1.3k | $118.54 | $154k | | 05/03/2021 |
| 03/26/2021 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 14.056 | $0.00 | $0 | | 03/26/2021 |
| 03/03/2021 | HANOVER INSURANCE GROUP, INC. | THG | Sale | Common Stock | 638 | $120.22 | $76.7k | | 03/03/2021 |
| 03/03/2021 | HANOVER INSURANCE GROUP, INC. | THG | Sale | Common Stock | 1.4k | $120.39 | $164.9k | | 03/03/2021 |
| 03/03/2021 | HANOVER INSURANCE GROUP, INC. | THG | Exercise | Common Stock Option (right to buy) | 1.4k | $104.11 | $142.6k | | 03/03/2021 |
| 03/01/2021 | HANOVER INSURANCE GROUP, INC. | THG | Payment of Exercise | Common Stock | 325 | $119.67 | $38.9k | | 02/26/2021 |
| 02/26/2021 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock Option (right to buy) | 3.6k | $115.35 | $412.8k | | 02/26/2021 |
| 02/26/2021 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 651 | $0.00 | $0 | | 02/26/2021 |