WESTLAKE CORP — Director's Dealing 2016

Feb 18, 2016

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: WESTLAKE CHEMICAL CORP (WLK)
CIK: 0001262823
Period of Report: 2016-02-15

Reporting Person: Mattina Michael J. (Sr. VP, Polyethylene)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2016-02-15	Common Stock	M	892	—	Acquired	8802	Direct
2016-02-17	Common Stock	F	296	$43.52	Disposed	8506	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2016-02-15	Restricted Stock Units	$	M	892	Disposed		Common Stock (892)	Direct

Footnotes

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

F2: On February 15, 2013, the reporting person was granted 892 restricted stock units vesting on the third anniversary of the grant date.