CELANESE CORP DEL

Ticker: CE CUSIP: 150870103 Class: COM

CASTLEARK MANAGEMENT LLC's Holding History (CIK: 0001106832)

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

Q4 2017

Shares 47,985 Value ($000) $5,138 Avg Close $90.95 Range $86.93 - $94.02

Q3 2017

Shares 47,985 Value ($000) $5,003 Avg Close $83.73 Range $77.78 - $89.38

Q2 2017

Shares 43,395 Value ($000) $4,120 Avg Close $75.56 Range $70.77 - $82.35

Q1 2017

Shares 62,685 Value ($000) $5,632 Avg Close $73.64 Range $65.95 - $78.61

Q4 2016

Shares 65,085 Value ($000) $5,125 Avg Close $63.15 Range $52.76 - $71.49

Q3 2016

Shares 15,530 Value ($000) $1,034 Avg Close $54.65 Range $50.72 - $59.26

Q2 2016

Shares 31,230 Value ($000) $2,044 Avg Close $57.77 Range $50.88 - $61.75

Q1 2016

Shares 29,400 Value ($000) $1,926 Avg Close $51.27 Range $45.38 - $56.02

Q4 2015

Shares 59,000 Value ($000) $3,972 Avg Close $55.92 Range $48.05 - $60.11

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2017	47,985	$5,138	$90.95	$86.93 - $94.02
Q3 2017	47,985	$5,003	$83.73	$77.78 - $89.38
Q2 2017	43,395	$4,120	$75.56	$70.77 - $82.35
Q1 2017	62,685	$5,632	$73.64	$65.95 - $78.61
Q4 2016	65,085	$5,125	$63.15	$52.76 - $71.49
Q3 2016	15,530	$1,034	$54.65	$50.72 - $59.26
Q2 2016	31,230	$2,044	$57.77	$50.88 - $61.75
Q1 2016	29,400	$1,926	$51.27	$45.38 - $56.02
Q4 2015	59,000	$3,972	$55.92	$48.05 - $60.11