WESTLAKE CORP — Director's Dealing 2011

Mar 4, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: WESTLAKE CHEMICAL CORP (WLK)
CIK: 0001262823
Period of Report: 2011-03-02

Reporting Person: BLAKELY ROBERT T (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-03-02	Common Stock	M	2759	$14.50	Acquired	10984	Direct
2011-03-02	Common Stock	M	1912	$20.825	Acquired	12896	Direct
2011-03-02	Common Stock	M	887	$24.51	Acquired	13783	Direct
2011-03-02	Common Stock	M	1440	$27.125	Acquired	15223	Direct
2011-03-02	Common Stock	M	1345	$30.07	Acquired	16568	Direct
2011-03-02	Common Stock	S	8243	$48.054	Disposed	8325	Direct
2011-03-02	Common Stock	S	100	$48.12	Disposed	8225	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-03-02	Employee Option (right to buy)	$14.50	M	2759	Acquired	2017-08-16	Common Stock (2759)	Direct
2011-03-02	Employee Option (right to buy)	$20.825	M	1912	Acquired	2021-08-15	Common Stock (1912)	Direct
2011-03-02	Employee Option (right to buy)	$24.51	M	887	Acquired	2020-08-20	Common Stock (887)	Direct
2011-03-02	Employee Option (right to buy)	$27.125	M	1440	Acquired	2020-08-17	Common Stock (1440)	Direct
2011-03-02	Employee Option (right to buy)	$30.07	M	1345	Acquired	2020-08-21	Common Stock (1345)	Direct