WESTLAKE CORP — Director's Dealing 2013

Mar 13, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: WESTLAKE CHEMICAL CORP (WLK)
CIK: 0001262823
Period of Report: 2013-03-11

Reporting Person: LUKENS MAX L (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-03-11	Common Stock	M	887	$24.51	Acquired	8786	Direct
2013-03-11	Common Stock	M	957	$20.825	Acquired	9743	Direct
2013-03-11	Common Stock	S	100	$92.64	Disposed	9643	Direct
2013-03-11	Common Stock	S	1200	$92.6506	Disposed	8443	Direct
2013-03-11	Common Stock	S	144	$92.66	Disposed	8299	Direct
2013-03-11	Common Stock	S	300	$92.74	Disposed	7999	Direct
2013-03-11	Common Stock	S	100	$92.78	Disposed	7899	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2013-03-11	Employee Option (right to buy)	$24.51	M	887	Disposed	2019-08-20	Common Stock (887)	Direct
2013-03-11	Employee Option (right to buy)	$20.825	M	957	Disposed	2018-08-15	Common Stock (957)	Direct