XENON PHARMACEUTICALS INC

Ticker: XENE CUSIP: 98420N105 Class: Common Stock

K2 PRINCIPAL FUND, L.P.'s Holding History (CIK: 0001461790)

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

Q1 2018

Shares 101,103 Value ($000) $495 Avg Close $3.70 Range $2.70 - $5.05

Q4 2017

Shares 219,543 Value ($000) $620 Avg Close $2.72 Range $2.10 - $3.50

Q3 2017

Shares 164,510 Value ($000) $485 Avg Close $3.09 Range $2.25 - $3.50

Q2 2017

Shares 164,510 Value ($000) $518 Avg Close $3.91 Range $2.85 - $4.45

Q1 2017

Shares 116,975 Value ($000) $468 Avg Close $7.86 Range $3.95 - $9.95

Q4 2016

Shares 57,228 Value ($000) $441 Avg Close $8.03 Range $7.35 - $8.75

Q3 2016

Shares 15,000 Value ($000) $122 Avg Close $7.72 Range $5.88 - $8.56

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2018	101,103	$495	$3.70	$2.70 - $5.05
Q4 2017	219,543	$620	$2.72	$2.10 - $3.50
Q3 2017	164,510	$485	$3.09	$2.25 - $3.50
Q2 2017	164,510	$518	$3.91	$2.85 - $4.45
Q1 2017	116,975	$468	$7.86	$3.95 - $9.95
Q4 2016	57,228	$441	$8.03	$7.35 - $8.75
Q3 2016	15,000	$122	$7.72	$5.88 - $8.56