WESTLAKE CORP — Director's Dealing 2012

Aug 13, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: WESTLAKE CHEMICAL CORP (WLK)
CIK: 0001262823
Period of Report: 2012-08-09

Reporting Person: Kenner Andrew (VP - Manufacturing)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-08-09	Common Stock	M	2893	$20.525	Acquired	15038	Direct
2012-08-09	Common Stock	M	1262	$45.83	Acquired	16300	Direct
2012-08-09	Common Stock	S	2655	$66.80	Disposed	13645	Direct
2012-08-09	Common Stock	S	300	$66.81	Disposed	13345	Direct
2012-08-09	Common Stock	S	200	$66.82	Disposed	13145	Direct
2012-08-09	Common Stock	S	1000	$66.83	Disposed	12145	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-08-09	Employee Option (right to buy)	$20.525	M	2893	Acquired	2020-02-26	Common Stock (2893)	Direct
2012-08-09	Employee Option (right to buy)	$45.83	M	1262	Acquired	2021-02-18	Common Stock (1262)	Direct