REGENXBIO INC

Ticker: RGNX CUSIP: 75901B107 Class: Common Stock

SABBY MANAGEMENT, LLC's Holding History (CIK: 0001535610)

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

Q4 2016

Shares 48,400 Value ($000) $898 Avg Close $19.11 Range $13.61 - $24.55

Q3 2016

Shares 263,177 Value ($000) $3,687 Avg Close $11.04 Range $7.07 - $16.47

Q2 2016

Shares 411,926 Value ($000) $3,295 Avg Close $11.10 Range $7.71 - $13.77

Q1 2016

Shares 300,329 Value ($000) $3,244 Avg Close $12.80 Range $8.50 - $17.31

Q4 2015

Shares 116,860 Value ($000) $1,940 Avg Close $19.85 Range $13.77 - $25.00

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2016	48,400	$898	$19.11	$13.61 - $24.55
Q3 2016	263,177	$3,687	$11.04	$7.07 - $16.47
Q2 2016	411,926	$3,295	$11.10	$7.71 - $13.77
Q1 2016	300,329	$3,244	$12.80	$8.50 - $17.31
Q4 2015	116,860	$1,940	$19.85	$13.77 - $25.00