Editas Medicine, Inc. — Director's Dealing 2016

Sep 7, 2016

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Editas Medicine, Inc. (EDIT)
CIK: 0001650664
Period of Report: 2016-09-06

Reporting Person: STARR KEVIN P (10% Owner)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2016-09-06	Common Stock	S	5890	$15.9025	Disposed	0	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	3906176	Indirect

Footnotes

F1: Such shares were received as a distribution from Third Rock Ventures III, L.P. ("TRV III") on August 16, 2016 in a transaction exempt pursuant to Rule 16a-13 and Rule 16a-9.

F2: These shares are directly held by TRV III. The general partner of TRV III is Third Rock Ventures GP III, L.P. ("TRV GP III"). The general partner of TRV GP III is TRV GP III, LLC ("TRV GP III LLC"). The individual managers of TRV GP III LLC are the Reporting Person, Mark Levin ("Levin") and Dr. Robert Tepper ("Tepper"). Each of TRV GP III, TRV GP III LLC, the Reporting Person, Levin and Tepper disclaims beneficial ownership of the shares except to the extent of its or his pecuniary interest therein, if any, and this report shall not be deemed an admission that it or he is the beneficial owner of such shares.