WESTLAKE CORP — Director's Dealing 2018

Aug 20, 2018

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: WESTLAKE CHEMICAL CORP (WLK)
CIK: 0001262823
Period of Report: 2018-08-17

Reporting Person: LUKENS MAX L (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2018-08-17	Common Stock	M	1003	—	Acquired	4283	Direct
2018-08-18	Common Stock	M	1721	—	Acquired	6004	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2018-08-17	Restricted Stock Units	$	M	1003	Disposed		Common Stock (1003)	Direct
2018-08-17	Restricted Stock Units	$	A	1409	Acquired		Common Stock (1409)	Direct
2018-08-18	Restricted Stock Units	$	M	1721	Disposed		Common Stock (1721)	Direct

Footnotes

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

F2: On August 17, 2016 the reporting person was granted 3,009 restricted stock units vesting in three equal installments beginning on the first anniversary of the grant date.

F3: On August 18, 2017 the reporting person was granted 1,721 restricted stock units vesting on the first anniversary of the grant date.

F4: All of the restricted stock units will vest on August 17, 2019.