Form of Proxy

EDITAS MEDICINE, INC.

Notes

BD Client Code:

Client Name:

Number of Shares Held in a BD Nominee Company:

No.	Proposition		For	Against	Abstain
1	DIRECTOR Bernadette Connaughton
2	DIRECTOR Elliott Levy, M.D.
3	To approve, on an advisory basis, the compensation paid to the Companys named executive officers.
4	To ratify the appointment of PricewaterhouseCoopers LLP as the Companys independent registered public accounting firm for the fiscal year ending December 31, 2026.