EDITAS MEDICINE INC

Ticker: EDIT CUSIP: 28106W103 Class: Stock

SABBY MANAGEMENT, LLC's Holding History (CIK: 0001535610)

Note: Option positions (PUT/CALL) are excluded.

Q2 2017

Shares 85,000 Value ($000) $1,426 Avg Close $18.02 Range $13.12 - $22.74

Q1 2017

Shares 90,300 Value ($000) $2,015 Avg Close $20.72 Range $16.30 - $29.20

Q4 2016

Shares 115,000 Value ($000) $1,866 Avg Close $15.18 Range $12.43 - $18.94

Q3 2016

Shares 135,000 Value ($000) $1,820 Avg Close $20.49 Range $13.10 - $28.63

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2017	85,000	$1,426	$18.02	$13.12 - $22.74
Q1 2017	90,300	$2,015	$20.72	$16.30 - $29.20
Q4 2016	115,000	$1,866	$15.18	$12.43 - $18.94
Q3 2016	135,000	$1,820	$20.49	$13.10 - $28.63