WESTLAKE CORP — Director's Dealing 2010

Mar 2, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: WESTLAKE CHEMICAL CORP (WLK)
CIK: 0001262823
Period of Report: 2010-02-26

Reporting Person: Wallace Stephen (VP, General Counsel, Secretary)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-02-26	Common Stock	A	3535	$00	Acquired	27286	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-02-26	Employee Option (right to buy)	$20.525	A	8935	Acquired	2020-02-26	Common Stock (8935)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	200	Indirect

Footnotes

F1: The shares of restricted stock will vest on February 26, 2013.

F2: The stock options are exercisable in three equal installments on February 26, 2011, 2012 and 2013.