EDITAS MEDICINE INC

Ticker: EDIT CUSIP: 28106W103 Class: Stock

GREAT LAKES ADVISORS, LLC's Holding History (CIK: 0001078013)

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

Q4 2020

Shares 380,011 Value ($000) $26,643 Avg Close $41.08 Range $27.01 - $96.45

Q1 2019

Shares 276,195 Value ($000) $6,753 Avg Close $22.63 Range $19.00 - $28.15

Q3 2017

Shares 10,764 Value ($000) $258 Avg Close $19.03 Range $15.28 - $24.50

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2020	380,011	$26,643	$41.08	$27.01 - $96.45
Q1 2019	276,195	$6,753	$22.63	$19.00 - $28.15
Q3 2017	10,764	$258	$19.03	$15.28 - $24.50