EDITAS MEDICINE INC

Ticker: EDIT CUSIP: 28106W103 Class: Stock

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP's Holding History (CIK: 0001164508)

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

Q2 2018

Shares 7,252 Value ($000) $260 Avg Close $35.41 Range $31.12 - $41.43

Q1 2018

Shares 347,761 Value ($000) $11,528 Avg Close $35.63 Range $27.00 - $45.02

Q4 2017

Shares 174,135 Value ($000) $5,351 Avg Close $25.18 Range $20.29 - $32.85

Q3 2017

Shares 17,600 Value ($000) $423 Avg Close $19.03 Range $15.28 - $24.50

Q2 2017

Shares 17,000 Value ($000) $285 Avg Close $18.02 Range $13.12 - $22.74

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2018	7,252	$260	$35.41	$31.12 - $41.43
Q1 2018	347,761	$11,528	$35.63	$27.00 - $45.02
Q4 2017	174,135	$5,351	$25.18	$20.29 - $32.85
Q3 2017	17,600	$423	$19.03	$15.28 - $24.50
Q2 2017	17,000	$285	$18.02	$13.12 - $22.74