WESTLAKE CORP — Director's Dealing 2012

Nov 27, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: WESTLAKE CHEMICAL CORP (WLK)
CIK: 0001262823
Period of Report: 2012-11-23

Reporting Person: Bender Mark Steven (Sr VP, CFO and Treasurer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-11-23	Common Stock	M	1220	$14.235	Acquired	37501	Direct
2012-11-23	Common Stock	S	1220	$75.95	Disposed	36281	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-11-23	Employee Option (right to buy)	$14.235	M	1220	Acquired	2019-02-13	Common Stock (1220)	Direct