WESTLAKE CHEM CORP

Ticker: WLK CUSIP: 960413102 Class: Common Stock

HIGHLAND CAPITAL MANAGEMENT, LLC's Holding History (CIK: 0000860486)

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

Q2 2018

Shares 6,309 Value ($000) $679 Avg Close $99.34 Range $90.39 - $110.06

Q1 2018

Shares 8,032 Value ($000) $893 Avg Close $98.39 Range $86.89 - $107.41

Q4 2017

Shares 6,935 Value ($000) $739 Avg Close $81.78 Range $72.56 - $95.02

Q2 2015

Shares 30,422 Value ($000) $2,087 Avg Close $62.10 Range $58.06 - $67.58

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2018	6,309	$679	$99.34	$90.39 - $110.06
Q1 2018	8,032	$893	$98.39	$86.89 - $107.41
Q4 2017	6,935	$739	$81.78	$72.56 - $95.02
Q2 2015	30,422	$2,087	$62.10	$58.06 - $67.58