WESTLAKE CORP — Director's Dealing 2015

Aug 13, 2015

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: WESTLAKE CHEMICAL CORP (WLK)
CIK: 0001262823
Period of Report: 2015-08-11

Reporting Person: BLAKELY ROBERT T (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2015-08-11	Common Stock	M	1776	$12.255	Acquired	16756	Direct
2015-08-11	Common Stock	S	5143	$63.00	Disposed	11613	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2015-08-11	Employee Option (right to buy)	$12.255	M	1776	Disposed	2019-08-20	Common Stock (1776)	Direct

Footnotes

F1: The stock options are exercisable in four installments of 25% each on August 20, 2010, 2011, 2012, and 2013, respectively.