WESTLAKE CORP — Director's Dealing 2012

Dec 10, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: WESTLAKE CHEMICAL CORP (WLK)
CIK: 0001262823
Period of Report: 2012-12-06

Reporting Person: Chao Albert (Director, President & CEO, 10% Owner)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-12-06	Common Stock	S	25392	$72.5	Disposed	158910	Direct
2012-12-06	Common Stock	S	129	$72.55	Disposed	158781	Direct
2012-12-06	Common Stock	S	101	$72.56	Disposed	158680	Direct
2012-12-06	Common Stock	S	3098	$72.6	Disposed	155582	Direct
2012-12-06	Common Stock	S	302	$72.61	Disposed	155280	Direct
2012-12-06	Common Stock	S	100	$72.64	Disposed	155180	Direct
2012-12-06	Common Stock	S	800	$72.66	Disposed	154380	Direct
2012-12-06	Common Stock	S	200	$72.67	Disposed	154180	Direct
2012-12-06	Common Stock	S	300	$72.69	Disposed	153880	Direct
2012-12-06	Common Stock	S	100	$72.7	Disposed	153780	Direct
2012-12-06	Common Stock	S	2000	$72.71	Disposed	151780	Direct
2012-12-06	Common Stock	S	30	$72.73	Disposed	151750	Direct
2012-12-06	Common Stock	S	500	$72.74	Disposed	151250	Direct
2012-12-06	Common Stock	S	100	$72.76	Disposed	151150	Direct
2012-12-06	Common Stock	S	100	$72.79	Disposed	151050	Direct
2012-12-06	Common Stock	S	500	$72.8	Disposed	150550	Direct
2012-12-06	Common Stock	S	100	$72.86	Disposed	150450	Direct
2012-12-06	Common Stock	S	410	$72.9	Disposed	150040	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	20000	Indirect
Common Stock	115842	Indirect
Common Stock	46005277	Indirect

Footnotes

F1: The reporting person disclaims beneficial ownership of these securities, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose.