XENCOR INC

Ticker: XNCR CUSIP: 98401F105 Class: Common Stock

Alyeska Investment Group, L.P.'s Holding History (CIK: 0001453072)

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

Q1 2018

Shares 59,590 Value ($000) $1,787 Avg Close $26.15 Range $20.16 - $34.25

Q3 2015

Shares 16,317 Value ($000) $200 Avg Close $19.57 Range $11.81 - $24.82

Q2 2015

Shares 210,504 Value ($000) $4,625 Avg Close $17.04 Range $13.00 - $22.23

Q1 2015

Shares 361,065 Value ($000) $5,532 Avg Close $15.78 Range $13.67 - $19.50

Q4 2014

Shares 33,413 Value ($000) $536 Avg Close $11.60 Range $9.00 - $17.64

Q3 2014

Shares 23,667 Value ($000) $220 Avg Close $10.12 Range $9.06 - $11.92

Q1 2014

Shares 144,568 Value ($000) $1,696 Avg Close $10.51 Range $7.77 - $14.41

Q4 2013

Shares 143,700 Value ($000) $1,313 Avg Close $8.58 Range $5.75 - $10.90

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2018	59,590	$1,787	$26.15	$20.16 - $34.25
Q3 2015	16,317	$200	$19.57	$11.81 - $24.82
Q2 2015	210,504	$4,625	$17.04	$13.00 - $22.23
Q1 2015	361,065	$5,532	$15.78	$13.67 - $19.50
Q4 2014	33,413	$536	$11.60	$9.00 - $17.64
Q3 2014	23,667	$220	$10.12	$9.06 - $11.92
Q1 2014	144,568	$1,696	$10.51	$7.77 - $14.41
Q4 2013	143,700	$1,313	$8.58	$5.75 - $10.90