REGENXBIO INC

Ticker: RGNX CUSIP: 75901B107 Class: Common Stock

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

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

Q1 2021

Shares 42,057 Value ($000) $1,434 Avg Close $42.65 Range $32.18 - $50.26

Q4 2020

Shares 68,869 Value ($000) $3,124 Avg Close $34.94 Range $26.40 - $50.15

Q3 2020

Shares 65,169 Value ($000) $1,793 Avg Close $32.60 Range $25.93 - $40.89

Q2 2020

Shares 45,969 Value ($000) $1,693 Avg Close $37.28 Range $27.42 - $45.06

Q1 2020

Shares 32,369 Value ($000) $1,048 Avg Close $41.66 Range $20.03 - $54.97

Q4 2019

Shares 28,869 Value ($000) $1,182 Avg Close $39.50 Range $34.02 - $45.88

Q3 2019

Shares 35,369 Value ($000) $1,259 Avg Close $40.52 Range $30.38 - $52.48

Q2 2019

Shares 28,669 Value ($000) $1,473 Avg Close $49.92 Range $40.29 - $59.98

Q1 2019

Shares 10,957 Value ($000) $628 Avg Close $49.54 Range $40.24 - $63.21

Q4 2018

Shares 9,857 Value ($000) $414 Avg Close $58.66 Range $38.56 - $77.48

Q3 2018

Shares 10,900 Value ($000) $823 Avg Close $72.05 Range $61.00 - $85.10

Q2 2018

Shares 11,500 Value ($000) $825 Avg Close $47.76 Range $26.80 - $75.15

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2021	42,057	$1,434	$42.65	$32.18 - $50.26
Q4 2020	68,869	$3,124	$34.94	$26.40 - $50.15
Q3 2020	65,169	$1,793	$32.60	$25.93 - $40.89
Q2 2020	45,969	$1,693	$37.28	$27.42 - $45.06
Q1 2020	32,369	$1,048	$41.66	$20.03 - $54.97
Q4 2019	28,869	$1,182	$39.50	$34.02 - $45.88
Q3 2019	35,369	$1,259	$40.52	$30.38 - $52.48
Q2 2019	28,669	$1,473	$49.92	$40.29 - $59.98
Q1 2019	10,957	$628	$49.54	$40.24 - $63.21
Q4 2018	9,857	$414	$58.66	$38.56 - $77.48
Q3 2018	10,900	$823	$72.05	$61.00 - $85.10
Q2 2018	11,500	$825	$47.76	$26.80 - $75.15