| Date | Name | Symbol | Type | Security | Shares | Price | Value | Ownership | Reported |
| 09/29/2023 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 24.174 | $0.00 | $0 | | 09/29/2023 |
| 06/30/2023 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 23.568 | $0.00 | $0 | | 06/30/2023 |
| 03/31/2023 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 20.6 | $0.00 | $0 | | 03/31/2023 |
| 02/28/2023 | HANOVER INSURANCE GROUP, INC. | THG | Payment of Exercise | Common Stock | 1.1k | $139.48 | $152.3k | | 02/27/2023 |
| 02/27/2023 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock Option (right to buy) | 4.8k | $140.01 | $665.7k | | 02/27/2023 |
| 02/27/2023 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 1.5k | $0.00 | $0 | | 02/27/2023 |
| 02/27/2023 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 1.1k | $0.00 | $0 | | 02/27/2023 |
| 02/27/2023 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 1.1k | $0.00 | $0 | | 02/27/2023 |
| 12/30/2022 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 19.822 | $0.00 | $0 | | 12/30/2022 |
| 09/30/2022 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 19.242 | $0.00 | $0 | | 09/30/2022 |
| 06/24/2022 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 16.577 | $0.00 | $0 | | 06/24/2022 |
| 03/25/2022 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 16.294 | $0.00 | $0 | | 03/25/2022 |
| 02/28/2022 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock Option (right to buy) | 4.8k | $139.51 | $672.2k | | 02/28/2022 |
| 02/28/2022 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 986 | $0.00 | $0 | | 02/28/2022 |
| 12/30/2021 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 12.841 | $0.00 | $0 | | 12/30/2021 |
| 09/24/2021 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 11.801 | $0.00 | $0 | | 09/24/2021 |
| 06/25/2021 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 11.313 | $0.00 | $0 | | 06/25/2021 |
| 03/26/2021 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 11.857 | $0.00 | $0 | | 03/26/2021 |
| 03/01/2021 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 1.1k | $0.00 | $0 | | 02/26/2021 |
| 02/26/2021 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock Option (right to buy) | 6.3k | $115.35 | $722.3k | | 02/26/2021 |
| 12/30/2020 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 6.488 | $0.00 | $0 | | 12/30/2020 |
| 09/25/2020 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 7.668 | $0.00 | $0 | | 09/25/2020 |
| 03/27/2020 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 7.517 | $0.00 | $0 | | 03/27/2020 |
| 02/28/2020 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 1.1k | $0.00 | $0 | | 02/28/2020 |
| 02/28/2020 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock Option (right to buy) | 8.7k | $118.54 | $1M | | 02/28/2020 |