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: 2011-03-03

Reporting Person: Taylor Jeffrey L (Sr VP, Polyethylene)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-03-03	Common Stock	M	2922	$20.525	Acquired	26118	Direct
2011-03-03	Common Stock	S	500	$48.92	Disposed	25618	Direct
2011-03-03	Common Stock	S	1122	$48.926	Disposed	24496	Direct
2011-03-03	Common Stock	S	1300	$49.94	Disposed	23196	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-03-03	Employee Option (right to buy)	$20.525	M	2922	Acquired	2020-02-26	Common Stock (2922)	Direct