WESTLAKE CHEM CORP

Ticker: WLK CUSIP: 960413102 Class: Common Stock

Callahan Advisors, LLC's Holding History (CIK: 0001395055)

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

Q3 2019

Shares 7,555 Value ($000) $495 Avg Close $57.99 Range $50.43 - $64.27

Q2 2019

Shares 6,270 Value ($000) $436 Avg Close $59.69 Range $51.40 - $69.93

Q1 2019

Shares 7,800 Value ($000) $529 Avg Close $64.77 Range $57.75 - $72.34

Q4 2018

Shares 4,290 Value ($000) $284 Avg Close $64.35 Range $53.36 - $76.44

Q3 2018

Shares 4,020 Value ($000) $334 Avg Close $86.83 Range $72.82 - $100.10

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2019	7,555	$495	$57.99	$50.43 - $64.27
Q2 2019	6,270	$436	$59.69	$51.40 - $69.93
Q1 2019	7,800	$529	$64.77	$57.75 - $72.34
Q4 2018	4,290	$284	$64.35	$53.36 - $76.44
Q3 2018	4,020	$334	$86.83	$72.82 - $100.10