| Date | Name | Symbol | Type | Security | Shares | Price | Value | Ownership | Reported |
| 09/29/2023 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 72.258 | $0.00 | $0 | | 09/29/2023 |
| 06/30/2023 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 70.443 | $0.00 | $0 | | 06/30/2023 |
| 03/31/2023 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 61.574 | $0.00 | $0 | | 03/31/2023 |
| 02/28/2023 | HANOVER INSURANCE GROUP, INC. | THG | Payment of Exercise | Common Stock | 5.4k | $139.48 | $747.6k | | 02/27/2023 |
| 02/27/2023 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock Option (right to buy) | 13.9k | $140.01 | $1.9M | | 02/27/2023 |
| 02/27/2023 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 4.6k | $0.00 | $0 | | 02/27/2023 |
| 02/27/2023 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 3.3k | $0.00 | $0 | | 02/27/2023 |
| 02/27/2023 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 3.1k | $0.00 | $0 | | 02/27/2023 |
| 12/30/2022 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 60.473 | $0.00 | $0 | | 12/30/2022 |
| 09/30/2022 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 58.704 | $0.00 | $0 | | 09/30/2022 |
| 06/24/2022 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 50.571 | $0.00 | $0 | | 06/24/2022 |
| 05/17/2022 | HANOVER INSURANCE GROUP, INC. | THG | Payment of Exercise | Common Stock | 39.6k | $148.76 | $5.9M | | 05/17/2022 |
| 05/17/2022 | HANOVER INSURANCE GROUP, INC. | THG | Exercise | Common Stock Option (right to buy) | 47.5k | $104.11 | $4.9M | | 05/17/2022 |
| 03/25/2022 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 49.711 | $0.00 | $0 | | 03/25/2022 |
| 03/18/2022 | HANOVER INSURANCE GROUP, INC. | THG | Payment of Exercise | Common Stock | 42.2k | $145.25 | $6.1M | | 03/18/2022 |
| 03/18/2022 | HANOVER INSURANCE GROUP, INC. | THG | Exercise | Common Stock Option (right to buy) | 50.5k | $70.51 | $3.6M | | 03/18/2022 |
| 03/18/2022 | HANOVER INSURANCE GROUP, INC. | THG | Exercise | Common Stock Option (right to buy) | 54.6k | $85.87 | $4.7M | | 03/18/2022 |
| 03/18/2022 | HANOVER INSURANCE GROUP, INC. | THG | Payment of Exercise | Common Stock | 36k | $145.25 | $5.2M | | 03/18/2022 |
| 03/07/2022 | HANOVER INSURANCE GROUP, INC. | THG | Payment of Exercise | Common Stock | 4.8k | $139.52 | $671.9k | | 03/07/2022 |
| 02/28/2022 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 4.8k | $0.00 | $0 | | 02/28/2022 |
| 02/28/2022 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 2.7k | $0.00 | $0 | | 02/28/2022 |
| 02/28/2022 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 3k | $0.00 | $0 | | 02/28/2022 |
| 02/28/2022 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock Option (right to buy) | 14.5k | $139.51 | $2M | | 02/28/2022 |
| 12/30/2021 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 58.198 | $0.00 | $0 | | 12/30/2021 |
| 11/30/2021 | HANOVER INSURANCE GROUP, INC. | THG | Purchase | Common Stock | 1.5k | $123.02 | $183.8k | | 11/30/2021 |
| 11/30/2021 | HANOVER INSURANCE GROUP, INC. | THG | Purchase | Common Stock | 3.5k | $123.84 | $434.2k | | 11/30/2021 |
| 09/24/2021 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 53.486 | $0.00 | $0 | | 09/24/2021 |
| 06/25/2021 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 51.268 | $0.00 | $0 | | 06/25/2021 |
| 03/26/2021 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 53.738 | $0.00 | $0 | | 03/26/2021 |
| 03/01/2021 | HANOVER INSURANCE GROUP, INC. | THG | Payment of Exercise | Common Stock | 3.2k | $119.67 | $385.9k | | 02/26/2021 |
| 02/26/2021 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock Option (right to buy) | 19.1k | $115.35 | $2.2M | | 02/26/2021 |
| 02/26/2021 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 10.1k | $0.00 | $0 | | 02/26/2021 |
| 02/26/2021 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 3.5k | $0.00 | $0 | | 02/26/2021 |
| 12/30/2020 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 39.527 | $0.00 | $0 | | 12/30/2020 |
| 09/25/2020 | HANOVER INSURANCE GROUP, INC. | THG | Grant | Common Stock | 46.716 | $0.00 | $0 | | 09/25/2020 |
|