WESTLAKE CORP — Director's Dealing 2013

Feb 20, 2013

SEC Form 4/A — Form 4/A

Issuer: WESTLAKE CHEMICAL CORP (WLK)
CIK: 0001262823
Period of Report: 2012-05-29

Reporting Person: Chao James (Director, Chairman, 10% Owner)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-05-29	Employee Option (right to buy)	$14.235	M	70194	Disposed	2019-02-13	Common Stock (70194)	Direct

Footnotes

F1: The derivative securities were previously reported as being acquired instead of disposed of. In addition, the number of derivative securities beneficially owned following reported transaction was previously incorrectly reported as 35,097.