WESTLAKE CORP — Director's Dealing 2016

Feb 22, 2016

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: WESTLAKE CHEMICAL CORP (WLK)
CIK: 0001262823
Period of Report: 2016-02-18

Reporting Person: Buesinger Robert F. (Sr. Vice President, Vinyls)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2016-02-18	Employee Option (right to buy)	$44.42	A	13472	Acquired	2026-02-18	Common Stock (13472)	Direct
2016-02-18	Restricted Stock Units	$	A	3539	Acquired		Common Stock (3539)	Direct

Footnotes

F1: The stock options are exercisable in three installments of 33%, 33%, and 34% on February 18, 2017, 2018 and 2019, respectively.

F2: Each restricted stock unit represents a contingent right to receive one share of Westlake Chemical Corporation common stock.

F3: The restricted stock units will vest 3 years from the date of grant (February 18, 2019).