| Date | Name | Symbol | Type | Security | Shares | Price | Value | Ownership | Reported |
| 11/30/2022 | Magenta Therapeutics, Inc. | MGTA | Grant | Common Stock | 3k | $0.94 | $2.8k | | 11/30/2022 |
| 08/01/2022 | Magenta Therapeutics, Inc. | MGTA | Grant | Stock Option (Right to Buy) | 187.5k | $1.57 | $294.4k | | 08/01/2022 |
| 05/31/2022 | Magenta Therapeutics, Inc. | MGTA | Grant | Common Stock | 3k | $0.99 | $3k | | 05/31/2022 |
| 02/15/2022 | Magenta Therapeutics, Inc. | MGTA | Grant | Stock Option (Right to Buy) | 187.5k | $3.19 | $598.1k | | 02/15/2022 |
| 09/16/2021 | Magenta Therapeutics, Inc. | MGTA | Sale | Common Stock | 14.3k | $6.73 | $96.5k | | 09/16/2021 |
| 09/14/2021 | Magenta Therapeutics, Inc. | MGTA | Grant | Common Stock | 50k | $0.00 | $0 | | 09/14/2021 |
| 08/02/2021 | Magenta Therapeutics, Inc. | MGTA | Grant | Stock Option (Right to Buy) | 112.5k | $7.11 | $799.9k | | 08/02/2021 |
| 02/10/2020 | Magenta Therapeutics, Inc. | MGTA | Grant | Stock Option (Right to Buy) | 275k | $12.28 | $3.4M | | 02/10/2020 |
| 01/10/2020 | Magenta Therapeutics, Inc. | MGTA | Sale | Common Stock | 11.2k | $15.25 | $170.8k | | 01/10/2020 |
| 01/02/2020 | Magenta Therapeutics, Inc. | MGTA | Sale | Common Stock | 2.8k | $15.10 | $42.3k | | 01/02/2020 |
| 12/20/2019 | Magenta Therapeutics, Inc. | MGTA | Sale | Common Stock | 76.7k | $15.16 | $1.2M | | 12/20/2019 |
| 12/10/2019 | Magenta Therapeutics, Inc. | MGTA | Sale | Common Stock | 4.4k | $15.10 | $66.3k | | 12/10/2019 |
| 06/21/2019 | Magenta Therapeutics, Inc. | MGTA | Sale | Common Stock | 12.3k | $15.11 | $186.3k | | 06/20/2019 |
| 06/20/2019 | Magenta Therapeutics, Inc. | MGTA | Sale | Common Stock | 1.7k | $15.10 | $25.2k | | 06/20/2019 |
| 02/05/2019 | Magenta Therapeutics, Inc. | MGTA | Grant | Stock Option (Right to Buy) | 182.9k | $7.13 | $1.3M | | 02/05/2019 |
| 06/25/2018 | Magenta Therapeutics, Inc. | MGTA | Conversion | Common Stock | 25.7k | $0.00 | $0 | By J.P. Gardner Irrevocable Trust | 06/25/2018 |
| 06/25/2018 | Magenta Therapeutics, Inc. | MGTA | Conversion | Common Stock | 21.7k | $0.00 | $0 | By P.S. Gardner Irrevocable Trust | 06/25/2018 |
| 06/25/2018 | Magenta Therapeutics, Inc. | MGTA | Purchase | Common Stock | 400 | $15.00 | $6k | | 06/25/2018 |
| 06/25/2018 | Magenta Therapeutics, Inc. | MGTA | Conversion | Series A Preferred Stock | 30k | $0.00 | $0 | By J.P. Gardner Irrevocable Trust | 06/25/2018 |
| 06/25/2018 | Magenta Therapeutics, Inc. | MGTA | Conversion | Series A Preferred Stock | 36.7k | $0.00 | $0 | By P.S. Gardner Irrevocable Trust | 06/25/2018 |
| 06/25/2018 | Magenta Therapeutics, Inc. | MGTA | Conversion | Series B Preferred Stock | 15k | $0.00 | $0 | By J.P. Gardner Irrevocable Trust | 06/25/2018 |
| 06/25/2018 | Magenta Therapeutics, Inc. | MGTA | Conversion | Series B Preferred Stock | 19.3k | $0.00 | $0 | By P.S. Gardner Irrevocable Trust | 06/25/2018 |
| 06/25/2018 | Magenta Therapeutics, Inc. | MGTA | Conversion | Series C Preferred Stock | 21.5k | $0.00 | $0 | By J.P. Gardner Irrevocable Trust | 06/25/2018 |