WESTLAKE CORP — Director's Dealing 2016

Aug 24, 2016

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: WESTLAKE CHEMICAL CORP (WLK)
CIK: 0001262823
Period of Report: 2016-08-22

Reporting Person: Jenkins Dorothy C (Director, 10% Owner)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2016-08-22	Common Stock	M	603	—	Acquired	40330	Direct
2016-08-22	Common Stock	M	357	—	Acquired	40687	Direct
2016-08-23	Common Stock	M	588	—	Acquired	41275	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2016-08-22	Restricted Stock Units	$	M	603	Disposed		Common Stock (603)	Direct
2016-08-22	Restricted Stock Units	$	M	357	Disposed		Common Stock (357)	Direct
2016-08-23	Restricted Stock Units	$	M	588	Disposed		Common Stock (588)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	92010554	Indirect

Footnotes

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

F2: On August 21, 2015, the reporting person was granted 1,809 restricted stock units vesting in three equal annual installments beginning on the first anniversary of the grant date.

F3: On August 22, 2014, the reporting person was granted 1,071 restricted stock units vesting in three equal annual installments beginning on the first anniversary of the grant date.

F4: On August 23, 2013, the reporting person was granted 1,760 restricted stock units (such number takes into account the Issuer's two-for-one stock split on March 18, 2014) vesting in three equal annual installments beginning on the first anniversary of the grant date.

F5: 92,010,554 shares of Issuer are held through TTWF LP, a Delaware limited partnership. Two trusts for the benefit of members of the Chao family, including the reporting person, are the managers of TTWFGP LLC, a Delaware limited liability company that is the general partner of TTWF LP. The limited partners of TTWF LP are five trusts, principally for the benefit of members of the Chao family, including the reporting person, and two corporations owned, indirectly or directly, by certain of these trusts and by other entities owned by members of the Chao family, including the reporting person. The reporting person shares investment and voting power with respect to the shares beneficially owned by TTWF LP. The reporting person disclaims beneficial ownership of the shares except to the extent of her pecuniary interest therein.