WESTLAKE CORP — Director's Dealing 2017

Oct 2, 2017

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: WESTLAKE CHEMICAL CORP (WLK)
CIK: 0001262823
Period of Report: 2017-09-30

Reporting Person: Ederington L. Benjamin (SVP, GC, CAO and Secretary)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2017-09-30	Common Stock	M	6700	—	Acquired	12424	Direct
2017-10-02	Common Stock	F	2141	$82.94	Disposed	10283	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2017-09-30	Restricted Stock Units	$	M	6700	Disposed		Common Stock (6700)	Direct

Footnotes

F1: Restricted stock units convert into Issuer's common stock on a one-for-one basis.

F2: On September 30, 2013, the reporting person was granted 6,700 restricted stock units vesting on the fourth anniversary of the grant date.