Editas Medicine, Inc. — Director's Dealing 2016

Feb 2, 2016

SEC Form 3 — Initial Statement of Beneficial Ownership

Issuer: Editas Medicine, Inc. (EDIT)
CIK: 0001650664
Period of Report: 2016-02-02

Reporting Person: Glucksmann Alexandra (Chief Operating Officer)

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	117788	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Stock Option (right to buy)	$0.65	2025-04-15	Common Stock (38461)		Direct
Stock Option (right to buy)	$11.21	2025-10-29	Common Stock (110955)		Direct

Footnotes

F1: These shares are restricted stock owned by Alexandra Glucksmann and issued pursuant to a restricted stock agreement between the Issuer and Ms. Glucksmann. Twelve and a half percent of the shares vested on March 20, 2014, and the remainder are scheduled to vest in equal monthly installments thereafter until August 20, 2017.

F2: This option was granted on April 16, 2015 and is scheduled to vest over four years with 25% of the shares scheduled to vest on March 9, 2016, and the remaining 75% of the shares scheduled to vest in equal monthly installments thereafter through March 9, 2019.

F3: This option was granted on October 30, 2015 and is scheduled to vest over four years with one quarter of the shares scheduled to vest on October 27, 2016, and the remaining shares scheduled to vest in equal monthly installments of 1/48th of the shares thereafter through October 27, 2019.