WESTLAKE CORP — Director's Dealing 2010

Mar 15, 2010

SEC Form 4/A — Form 4/A

Issuer: WESTLAKE CHEMICAL CORP (WLK)
CIK: 0001262823
Period of Report: 2010-03-02

Reporting Person: Morse Wayne D (Sr VP, Vinyls)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-03-02	Common Stock	S	1000	$22.81	Disposed	22918	Direct
2010-03-02	Common Stock	S	571	$22.79	Disposed	22347	Direct
2010-03-03	Common Stock	A	3662	$00	Acquired	26009	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-03-03	Employee Option (right to buy)	$20.525	A	9256	Acquired	2020-02-26	Common Stock (9256)	Direct

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.