WESTLAKE CORP — Director's Dealing 2019

Aug 19, 2019

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: WESTLAKE CHEMICAL CORP (WLK)
CIK: 0001262823
Period of Report: 2019-08-16

Reporting Person: Chao John Tsung-chen (Director, 10% Owner)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2019-08-17	Common Stock	M	1409	—	Acquired	1409	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2019-08-16	Restricted Stock Units	$	A	2387	Acquired		Common Stock (2387)	Direct
2019-08-17	Restricted Stock Units	$	M	1409	Acquired		Common Stock (1409)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	92010554	Indirect

Footnotes

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

F2: All of the restricted stock units will vest on August 16, 2020.

F3: On August 17, 2018 the reporting person was granted 1,409 restricted stock vesting on the first anniversary of the grant date.

F4: 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 disclaims beneficial ownership of the shares except to the extent of his pecuniary interest therein.