WESTLAKE CORP — Director's Dealing 2012

Dec 12, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: WESTLAKE CHEMICAL CORP (WLK)
CIK: 0001262823
Period of Report: 2012-12-10

Reporting Person: Mangieri George J (VP & Chief Accounting Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-12-10	Common Stock	M	972	$36.10	Acquired	15866	Direct
2012-12-10	Common Stock	S	972	$76.8415	Disposed	14894	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-12-10	Employee Option (right to buy)	$36.10	M	972	Acquired	2016-03-15	Common Stock (972)	Direct