WESTLAKE CORP — Director's Dealing 2017

Dec 19, 2017

SEC Form 4/A — Form 4/A

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

Reporting Person: Bender Mark Steven (EVP and CFO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-11-26	Common Stock	M	4407	$14.24	Acquired	40688	Direct
2012-11-26	Common Stock	S	4407	$75.00	Disposed	36281	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2017-11-26	Employee Option (right to buy)	$14.24	M	4407	Acquired	2019-02-13	Common Stock (4407)	Direct

Footnotes

F1: The amount of the security reflected on November 26, 2012 pre-dates the two-for-one stock split which occurred March 18, 2014.

F2: The price of the security reflected on November 26, 2012 pre-dates the two-for-one stock split which occurred March 18, 2014.

F3: The stock options are excercisable in three installments of 33%, 33% and 34% on February 13, 2010, 2011 and 2013.