144 0001755098 XXXXXXXX LIVE 0001650664 EDITAS MEDICINE, INC. 001-37687 c/o Editas Medicine, Inc. 11 Hurley St. Cambridge MA 02141 617-401-9000 Michelle Robertson Officer Common Stock E*Trade Financial Corporation

3 Edison Drive Alphareta GA 30005

3000 10845.12 68995606 05/11/2023 Nasdaq Common Stock 05/10/2023 Restricted Stock Unit Vesting Issuer N 3344 05/10/2023 Equity Compensation N Michelle Robertson

11 Hurley Street Cambridge MA 02141

Common Stock 02/13/2023 4287 41435.14 Michelle Robertson

11 Hurley Street Cambridge MA 02141

Common Stock 03/03/2023 184 1635.76 05/11/2023 12/30/2019 /s/ Michelle Robertson