WESTLAKE CORP — Director's Dealing 2018

May 1, 2018

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: WESTLAKE CHEMICAL CORP (WLK)
CIK: 0001262823
Period of Report: 2018-04-30

Reporting Person: Kearns Roger L. (EVP, Vinyls Chemicals)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2018-04-30	Restricted Stock Units	$	A	18448	Acquired		Common Stock (18448)	Direct

Footnotes

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

F2: The restricted stock units have a 2-year ratable vesting of 50% and will vest on April 30, 2019 and 2020, respectively.