SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* Hack Andrew A. F. (Last) (First) (Middle) C/O EDITAS MEDICINE, INC. 11 HURLEY ST. (Street) CAMBRIDGE MA 02141 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol Editas Medicine, Inc. [ EDIT ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director 10% Owner X Officer (give title below) Other (specify below) Chief Financial Officer
	3. Date of Earliest Transaction (Month/Day/Year) 10/26/2018
	4. If Amendment, Date of Original Filed (Month/Day/Year) 10/30/2018	6. Individual or Joint/Group Filing (Check Applicable Line) X Form filed by One Reporting Person Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock(1)	10/26/2018		M(2)		6,000	A	$3.23	6,000	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (right to buy)(1)	$3.23	10/26/2018		M(2)			6,000	(3)	07/13/2025	Common Stock	6,000	$0	124,427	D
Stock Option (right to buy)(4)	$6.48							(5)	09/13/2025	Common Stock	23,513		23,513	D

Explanation of Responses:

1. The Reporting Person is filing this amended Form 4 to amend the Form 4 filed by the Reporting Person with the SEC on October 30, 2018, which inadvertently reported the exercise of a different stock option held by the Reporting Person. This amended Form 4 now reflects the correct information regarding the option that was exercised.

2. The exercise and sale reported on this Form 4 were effected pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on June 29, 2018.

3. This option was granted on July 14, 2015 and is scheduled to vest over four years with 25% of the shares having vested on July 1, 2016, and the remaining 75% of the shares scheduled to vest in equal monthly installments thereafter through July 1, 2019.

4. The Form 4 filed by the Reporting Person with the SEC on October 30, 2018 erroneously reported this option as having been exercised. This amended Form 4 now includes the correct information regarding the portion of this option that was outstanding as of the date of the transactions reported on this amended Form 4.

5. This option was granted on September 14, 2015 and is scheduled to vest over four years, with 25% of the shares having vested on July 1, 2016, and the remaining 75% of the shares scheduled to vest in equal monthly installments thereafter through July 1, 2019.

	/s/ Andrew Hack	01/08/2019
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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