| Date | Name | Symbol | Type | Security | Shares | Price | Value | Ownership | Reported |
| 06/28/2022 | Magenta Therapeutics, Inc. | MGTA | Grant | Stock Option (Right to Buy) | 20k | $1.21 | $24.2k | | 06/28/2022 |
| 06/21/2022 | AGIOS PHARMACEUTICALS, INC. | AGIO | Grant | Restricted stock unit | 5k | $0.00 | $0 | | 06/21/2022 |
| 06/21/2022 | AGIOS PHARMACEUTICALS, INC. | AGIO | Grant | Stock options (right to buy) | 29.3k | $18.09 | $530.2k | | 06/21/2022 |
| 06/09/2022 | Editas Medicine, Inc. | EDIT | Grant | Stock Option (right to buy) | 25k | $12.31 | $307.8k | | 06/09/2022 |
| 05/20/2022 | AGIOS PHARMACEUTICALS, INC. | AGIO | Exercise | Restricted stock unit | 1.6k | $0.00 | $0 | | 05/20/2022 |
| 06/03/2021 | Editas Medicine, Inc. | EDIT | Grant | Stock Option (right to buy) | 11.5k | $33.36 | $384.9k | | 06/03/2021 |
| 06/01/2021 | Magenta Therapeutics, Inc. | MGTA | Grant | Stock Option (Right to Buy) | 18.2k | $12.91 | $234.8k | | 06/01/2021 |
| 05/28/2021 | AGIOS PHARMACEUTICALS, INC. | AGIO | Exercise | Restricted stock units | 1.7k | $0.00 | $0 | | 05/28/2021 |
| 05/20/2021 | AGIOS PHARMACEUTICALS, INC. | AGIO | Grant | Restricted stock unit | 1.6k | $0.00 | $0 | | 05/20/2021 |
| 05/20/2021 | AGIOS PHARMACEUTICALS, INC. | AGIO | Grant | Stock options (right to buy) | 8.9k | $56.76 | $504.5k | | 05/20/2021 |
| 06/10/2020 | Editas Medicine, Inc. | EDIT | Grant | Stock Option (right to buy) | 11.5k | $27.49 | $317.2k | | 06/10/2020 |
| 06/05/2020 | Magenta Therapeutics, Inc. | MGTA | Grant | Stock Option (Right to Buy) | 18.2k | $9.99 | $181.7k | | 06/05/2020 |
| 05/29/2020 | AGIOS PHARMACEUTICALS, INC. | AGIO | Exercise | Restricted stock units | 1.9k | $0.00 | $0 | | 05/28/2020 |
| 05/28/2020 | AGIOS PHARMACEUTICALS, INC. | AGIO | Grant | Stock options (right to buy) | 8.1k | $53.35 | $431.9k | | 05/28/2020 |
| 05/28/2020 | AGIOS PHARMACEUTICALS, INC. | AGIO | Grant | Restricted stock units | 1.7k | $0.00 | $0 | | 05/28/2020 |
| 06/07/2019 | Magenta Therapeutics, Inc. | MGTA | Grant | Stock Option (Right to Buy) | 18.2k | $13.40 | $243.7k | | 06/07/2019 |
| 05/31/2019 | AGIOS PHARMACEUTICALS, INC. | AGIO | Exercise | Restricted stock units | 1.4k | $0.00 | $0 | | 05/29/2019 |
| 05/29/2019 | AGIOS PHARMACEUTICALS, INC. | AGIO | Grant | Restricted stock units | 1.9k | $0.00 | $0 | | 05/29/2019 |
| 05/29/2019 | AGIOS PHARMACEUTICALS, INC. | AGIO | Grant | Stock option (right to buy) | 8.9k | $47.91 | $427.3k | | 05/29/2019 |
| 02/05/2019 | Editas Medicine, Inc. | EDIT | Grant | Stock Option (right to buy) | 23.1k | $21.14 | $487.8k | | 02/05/2019 |
| 06/25/2018 | Magenta Therapeutics, Inc. | MGTA | Conversion | Series C Preferred Stock | 16.1k | $0.00 | $0 | | 06/25/2018 |
| 06/25/2018 | Magenta Therapeutics, Inc. | MGTA | Conversion | Series B Preferred Stock | 6.4k | $0.00 | $0 | | 06/25/2018 |
| 06/25/2018 | Magenta Therapeutics, Inc. | MGTA | Conversion | Series A Preferred Stock | 50k | $0.00 | $0 | | 06/25/2018 |
| 06/25/2018 | Magenta Therapeutics, Inc. | MGTA | Purchase | Common Stock | 6.6k | $15.00 | $99k | | 06/25/2018 |
| 06/25/2018 | Magenta Therapeutics, Inc. | MGTA | Conversion | Common Stock | 28.1k | $0.00 | $0 | | 06/25/2018 |
| 05/31/2018 | AGIOS PHARMACEUTICALS, INC. | AGIO | Grant | Stock option (right to buy) | 5.7k | $93.50 | $533k | | 05/31/2018 |
| 05/31/2018 | AGIOS PHARMACEUTICALS, INC. | AGIO | Grant | Restricted stock units | 1.4k | $0.00 | $0 | | 05/31/2018 |
| 03/16/2018 | AGIOS PHARMACEUTICALS, INC. | AGIO | Purchase | Common stock | 200 | $83.44 | $16.7k | | 03/16/2018 |