EDITAS MEDICINE INC

Ticker: EDIT CUSIP: 28106W103 Class: Stock

MACKAY SHIELDS LLC's Holding History (CIK: 0000061227)

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

Q1 2021

Shares 30,992 Value ($000) $1,302 Avg Close $56.97 Range $36.10 - $99.95

Q4 2020

Shares 67,726 Value ($000) $4,748 Avg Close $41.08 Range $27.01 - $96.45

Q3 2020

Shares 61,726 Value ($000) $1,732 Avg Close $32.57 Range $27.69 - $39.96

Q2 2020

Shares 73,726 Value ($000) $2,181 Avg Close $26.13 Range $18.20 - $36.78

Q1 2020

Shares 65,026 Value ($000) $1,290 Avg Close $25.22 Range $14.01 - $34.37

Q4 2019

Shares 64,226 Value ($000) $1,901 Avg Close $24.97 Range $19.29 - $32.82

Q3 2019

Shares 60,926 Value ($000) $1,385 Avg Close $24.77 Range $22.20 - $27.00

Q2 2019

Shares 60,326 Value ($000) $1,492 Avg Close $23.87 Range $20.21 - $28.08

Q1 2019

Shares 21,692 Value ($000) $531 Avg Close $22.63 Range $19.00 - $28.15

Q4 2018

Shares 20,592 Value ($000) $469 Avg Close $27.21 Range $17.80 - $32.46

Q3 2018

Shares 22,400 Value ($000) $713 Avg Close $32.31 Range $26.00 - $38.77

Q2 2018

Shares 16,600 Value ($000) $595 Avg Close $35.41 Range $31.12 - $41.43

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2021	30,992	$1,302	$56.97	$36.10 - $99.95
Q4 2020	67,726	$4,748	$41.08	$27.01 - $96.45
Q3 2020	61,726	$1,732	$32.57	$27.69 - $39.96
Q2 2020	73,726	$2,181	$26.13	$18.20 - $36.78
Q1 2020	65,026	$1,290	$25.22	$14.01 - $34.37
Q4 2019	64,226	$1,901	$24.97	$19.29 - $32.82
Q3 2019	60,926	$1,385	$24.77	$22.20 - $27.00
Q2 2019	60,326	$1,492	$23.87	$20.21 - $28.08
Q1 2019	21,692	$531	$22.63	$19.00 - $28.15
Q4 2018	20,592	$469	$27.21	$17.80 - $32.46
Q3 2018	22,400	$713	$32.31	$26.00 - $38.77
Q2 2018	16,600	$595	$35.41	$31.12 - $41.43