WESTLAKE CORP — Director's Dealing 2012

Dec 11, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: WESTLAKE CHEMICAL CORP (WLK)
CIK: 0001262823
Period of Report: 2012-12-07

Reporting Person: Hansen David R (Sr VP Adminstration)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-12-07	Common Stock	M	5000	$14.235	Acquired	11156	Direct
2012-12-07	Common Stock	S	5000	$73.65	Disposed	6156	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-12-07	Employee Option (right to buy)	$14.235	M	5000	Acquired	2019-02-13	Common Stock (5000)	Direct