WESTLAKE CORP — Director's Dealing 2017

Feb 22, 2017

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: WESTLAKE CHEMICAL CORP (WLK)
CIK: 0001262823
Period of Report: 2017-02-17

Reporting Person: Mangieri George J (VP & Chief Accounting Officer)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2017-02-17	Employee Option (right to buy)	$61.865	A	4515	Acquired	2027-02-17	Common Stock (4515)	Direct
2017-02-17	Restricted Stock Units	$	A	1156	Acquired		Common Stock (1156)	Direct

Footnotes

F1: The stock options are exercisable in three installments of 33%, 33% and 34% on February 17, 2018, 2019 and 2020, 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 17, 2020).