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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-02-26	Common Stock	A	25021	$00	Acquired	125378	Direct
2010-02-26	Common Stock	A	18748	$00	Acquired	97211	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-02-26	Employee Option (right to buy)	$20.525	A	63249	Acquired	2020-02-26	Common Stock (63249)	Direct
2010-02-26	Employee Option (right to buy)	$20.525	A	47390	Acquired	2020-02-26	Common Stock (47390)	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	20000	Indirect

Footnotes

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

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.

F3: The stock options are exercisable in three equal installments on February 26, 2011, 2012 and 2013.