| Date | Name | Symbol | Type | Security | Shares | Price | Value | Ownership | Reported |
| 09/29/2023 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 33.619 | $0.00 | $0 | | 09/29/2023 |
| 06/30/2023 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 32.775 | $0.00 | $0 | | 06/30/2023 |
| 03/31/2023 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 28.648 | $0.00 | $0 | | 03/31/2023 |
| 02/28/2023 | HANOVER INSURANCE GROUP, INC. | THG | Payment of Exercise | Common Stock | 1.5k | $139.48 | $202.4k | | 02/27/2023 |
| 02/27/2023 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 1.8k | $0.00 | $0 | | 02/27/2023 |
| 02/27/2023 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 1.3k | $0.00 | $0 | | 02/27/2023 |
| 02/27/2023 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 1.6k | $0.00 | $0 | | 02/27/2023 |
| 02/27/2023 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock Option (right to buy) | 7.1k | $140.01 | $998.7k | | 02/27/2023 |
| 12/30/2022 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 25.585 | $0.00 | $0 | | 12/30/2022 |
| 09/30/2022 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 24.836 | $0.00 | $0 | | 09/30/2022 |
| 06/24/2022 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 21.395 | $0.00 | $0 | | 06/24/2022 |
| 03/25/2022 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 21.032 | $0.00 | $0 | | 03/25/2022 |
| 03/07/2022 | HANOVER INSURANCE GROUP, INC. | THG | Payment of Exercise | Common Stock | 1.2k | $139.52 | $169.2k | | 03/07/2022 |
| 02/28/2022 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 1.4k | $0.00 | $0 | | 02/28/2022 |
| 02/28/2022 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock Option (right to buy) | 7k | $139.51 | $977.7k | | 02/28/2022 |
| 02/28/2022 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 1.8k | $0.00 | $0 | | 02/28/2022 |
| 02/28/2022 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 1k | $0.00 | $0 | | 02/28/2022 |
| 12/30/2021 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 22.765 | $0.00 | $0 | | 12/30/2021 |
| 09/24/2021 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 20.922 | $0.00 | $0 | | 09/24/2021 |
| 08/02/2021 | HANOVER INSURANCE GROUP, INC. | THG | Exercise | Common Stock Option (right to buy) | 5.6k | $82.39 | $460.6k | | 08/02/2021 |
| 08/02/2021 | HANOVER INSURANCE GROUP, INC. | THG | Sale | Common Stock | 800 | $136.92 | $109.5k | | 08/02/2021 |
| 08/02/2021 | HANOVER INSURANCE GROUP, INC. | THG | Sale | Common Stock | 920 | $135.90 | $125k | | 08/02/2021 |
| 08/02/2021 | HANOVER INSURANCE GROUP, INC. | THG | Sale | Common Stock | 3.9k | $134.83 | $521.9k | | 08/02/2021 |
| 06/25/2021 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 20.054 | $0.00 | $0 | | 06/25/2021 |
| 06/01/2021 | HANOVER INSURANCE GROUP, INC. | THG | Sale | Common Stock | 4.3k | $139.54 | $598.8k | | 06/01/2021 |
| 06/01/2021 | HANOVER INSURANCE GROUP, INC. | THG | Sale | Common Stock | 1.3k | $140.24 | $182.3k | | 06/01/2021 |
| 06/01/2021 | HANOVER INSURANCE GROUP, INC. | THG | Exercise | Common Stock Option (right to buy) | 5.6k | $82.39 | $460.6k | | 06/01/2021 |
| 03/26/2021 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 21.02 | $0.00 | $0 | | 03/26/2021 |
| 03/02/2021 | HANOVER INSURANCE GROUP, INC. | THG | Sale | Common Stock | 1.8k | $119.34 | $209.1k | | 03/02/2021 |
| 03/02/2021 | HANOVER INSURANCE GROUP, INC. | THG | Sale | Common Stock | 3.8k | $120.05 | $461k | | 03/02/2021 |
| 03/02/2021 | HANOVER INSURANCE GROUP, INC. | THG | Exercise | Common Stock Option (right to buy) | 5.6k | $82.39 | $460.7k | | 03/02/2021 |
| 03/01/2021 | HANOVER INSURANCE GROUP, INC. | THG | Payment of Exercise | Common Stock | 1.2k | $119.67 | $143.8k | | 02/26/2021 |
| 02/26/2021 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock Option (right to buy) | 7.8k | $115.35 | $894.3k | | 02/26/2021 |
| 02/26/2021 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 3.5k | $0.00 | $0 | | 02/26/2021 |
| 02/26/2021 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 1.4k | $0.00 | $0 | | 02/26/2021 |
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