XENON PHARMACEUTICALS INC

Ticker: XENE CUSIP: 98420N105 Class: Common Stock

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

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

Q1 2018

Shares 67,000 Value ($000) $328 Avg Close $3.70 Range $2.70 - $5.05

Q4 2017

Shares 329,400 Value ($000) $931 Avg Close $2.72 Range $2.10 - $3.50

Q3 2017

Shares 307,600 Value ($000) $907 Avg Close $3.09 Range $2.25 - $3.50

Q2 2017

Shares 310,808 Value ($000) $979 Avg Close $3.91 Range $2.85 - $4.45

Q1 2017

Shares 296,478 Value ($000) $1,186 Avg Close $7.86 Range $3.95 - $9.95

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2018	67,000	$328	$3.70	$2.70 - $5.05
Q4 2017	329,400	$931	$2.72	$2.10 - $3.50
Q3 2017	307,600	$907	$3.09	$2.25 - $3.50
Q2 2017	310,808	$979	$3.91	$2.85 - $4.45
Q1 2017	296,478	$1,186	$7.86	$3.95 - $9.95