WESTLAKE CORP — Director's Dealing 2011

Jan 6, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: WESTLAKE CHEMICAL CORP (WLK)
CIK: 0001262823
Period of Report: 2010-01-04

Reporting Person: Johannesen Andrew (Vice President & Treasurer)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-01-04	Employee Option (right to buy)	$43.43	A	2780	Acquired	2020-12-22	Common Stock (2780)	Direct

Footnotes

F1: These options become exercisable in three equal installments on December 22, 2011, 2012 and 2013.