WESTLAKE CORP — Director's Dealing 2018

May 21, 2018

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: WESTLAKE CHEMICAL CORP (WLK)
CIK: 0001262823
Period of Report: 2018-05-18

Reporting Person: RILEY H JOHN JR (Director)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2018-05-18	Restricted Stock Units	$	A	144	Acquired		Common Stock (144)	Direct

Footnotes

F1: Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

F2: All of the restricted stock units will vest on May 18, 2019.