WESTLAKE CORP — Director's Dealing 2016

Aug 25, 2016

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: WESTLAKE CHEMICAL CORP (WLK)
CIK: 0001262823
Period of Report: 2016-08-23

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2016-08-23	Common Stock	M	30714	$15.8050	Acquired	54609	Direct
2016-08-23	Common Stock	S	30714	$52.0009	Disposed	23895	Direct
2016-08-24	Common Stock	F	5696	$51.93	Disposed	18199	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2016-08-23	Employee Option (right to buy)	$15.805	M	30714	Disposed	2017-02-23	Common Stock (30714)	Direct

Footnotes

F1: The stock options are exercisable in two equal installments on February 23, 2012 and August 23, 2016.