WESTLAKE CORP — Director's Dealing 2012

Nov 28, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: WESTLAKE CHEMICAL CORP (WLK)
CIK: 0001262823
Period of Report: 2012-11-26

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-11-26	Common Stock	M	4407	$14.235	Acquired	40688	Direct
2012-11-26	Common Stock	S	3382	$74.84	Disposed	37306	Direct
2012-11-26	Common Stock	S	200	$74.86	Disposed	37106	Direct
2012-11-26	Common Stock	S	100	$74.88	Disposed	37006	Direct
2012-11-26	Common Stock	S	100	$74.89	Disposed	36906	Direct
2012-11-26	Common Stock	S	325	$74.92	Disposed	36581	Direct
2012-11-26	Common Stock	S	200	$74.93	Disposed	36381	Direct
2012-11-26	Common Stock	S	100	$74.94	Disposed	36281	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-11-26	Employee Option (right to buy)	$14.235	M	4407	Acquired	2019-02-13	Common Stock (4407)	Direct