WESTLAKE CORP — Director's Dealing 2015

Nov 12, 2015

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: WESTLAKE CHEMICAL CORP (WLK)
CIK: 0001262823
Period of Report: 2015-11-10

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2015-11-10	Common Stock	M	1974	$30.0525	Acquired	25769	Direct
2015-11-10	Common Stock	S	1974	$60.2124	Disposed	23795	Direct
2015-11-10	Common Stock	S	811	$60.1901	Disposed	22984	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2015-11-10	Employee Option (right to buy)	$30.0525	M	1974	Disposed	2022-02-17	Common Stock (1974)	Direct

Footnotes

F1: The stock options are exercisable in three installments of 33%, 33%, and 34% on February 17, 2013, 2014, and 2015, respectively.