WESTLAKE CORP — Director's Dealing 2012

Nov 28, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: WESTLAKE CHEMICAL CORP (WLK)
CIK: 0001262823
Period of Report: 2012-11-26

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-11-26	Common Stock	M	35400	$14.5	Acquired	175275	Direct
2012-11-26	Common Stock	M	8547	$27.22	Acquired	183822	Direct
2012-11-26	Common Stock	M	4514	$36.1	Acquired	188336	Direct
2012-11-26	Common Stock	M	42579	$14.235	Acquired	230915	Direct
2012-11-26	Common Stock	S	30699	$75	Disposed	200216	Direct
2012-11-26	Common Stock	S	879	$75.02	Disposed	199337	Direct
2012-11-26	Common Stock	S	21	$75.03	Disposed	199316	Direct
2012-11-26	Common Stock	S	100	$75.1	Disposed	199216	Direct
2012-11-26	Common Stock	S	3800	$75.3	Disposed	195416	Direct
2012-11-26	Common Stock	S	100	$75.35	Disposed	195316	Direct
2012-11-26	Common Stock	S	100	$75.4	Disposed	195216	Direct
2012-11-26	Common Stock	S	900	$75.41	Disposed	194316	Direct
2012-11-26	Common Stock	S	100	$75.43	Disposed	194216	Direct
2012-11-26	Common Stock	S	2000	$75.5	Disposed	192216	Direct
2012-11-26	Common Stock	S	600	$75.63	Disposed	191616	Direct
2012-11-26	Common Stock	S	1160	$75.6301	Disposed	190456	Direct
2012-11-26	Common Stock	S	100	$75.66	Disposed	190356	Direct
2012-11-26	Common Stock	S	210	$75.6601	Disposed	190146	Direct
2012-11-26	Common Stock	S	100	$75.72	Disposed	190046	Direct
2012-11-26	Common Stock	S	300	$75.73	Disposed	189746	Direct
2012-11-26	Common Stock	S	400	$75.79	Disposed	189346	Direct
2012-11-26	Common Stock	S	30	$75.795	Disposed	189316	Direct
2012-11-26	Common Stock	S	100	$75.825	Disposed	189216	Direct
2012-11-26	Common Stock	S	4314	$75.87	Disposed	184902	Direct
2012-11-26	Common Stock	S	300	$75.88	Disposed	184602	Direct
2012-11-26	Common Stock	S	100	$75.89	Disposed	184502	Direct
2012-11-26	Common Stock	S	200	$75.92	Disposed	184302	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-11-26	Employee Option (right to buy)	$14.50	M	35400	Acquired	2014-08-16	Common Stock (35400)	Direct
2012-11-26	Employee Option (right to buy)	$27.22	M	8547	Acquired	2015-08-31	Common Stock (8547)	Direct
2012-11-26	Employee Option (right to buy)	$36.10	M	4514	Acquired	2016-03-15	Common Stock (4514)	Direct
2012-11-26	Employee Option (right to buy)	$14.235	M	42579	Acquired	2019-02-13	Common Stock (42579)	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.

F2: 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.