EDITAS MEDICINE INC

Ticker: EDIT CUSIP: 28106W103 Class: Stock

ONTARIO TEACHERS PENSION PLAN BOARD's Holding History (CIK: 0000937567)

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

Q3 2019

Shares 562,166 Value ($000) $12,784 Avg Close $24.77 Range $22.20 - $27.00

Q2 2019

Shares 562,166 Value ($000) $13,908 Avg Close $23.87 Range $20.21 - $28.08

Q1 2019

Shares 867,966 Value ($000) $21,222 Avg Close $22.63 Range $19.00 - $28.15

Q4 2018

Shares 867,966 Value ($000) $19,746 Avg Close $27.21 Range $17.80 - $32.46

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2019	562,166	$12,784	$24.77	$22.20 - $27.00
Q2 2019	562,166	$13,908	$23.87	$20.21 - $28.08
Q1 2019	867,966	$21,222	$22.63	$19.00 - $28.15
Q4 2018	867,966	$19,746	$27.21	$17.80 - $32.46