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WESTLAKE CORP Director's Dealing 2018

Aug 20, 2018

30551_dirs_2018-08-20_ce563f36-b1e2-4189-9470-da5ce8e4e4bf.zip

Director's Dealing

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SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: WESTLAKE CHEMICAL CORP (WLK)
CIK: 0001262823
Period of Report: 2018-08-17

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

Non-Derivative Transactions

Date Security Code Shares Price A/D Holdings After Ownership
2018-08-17 Common Stock M 1003 Acquired 55681 Direct
2018-08-18 Common Stock M 1721 Acquired 57402 Direct

Derivative Transactions

Date Security Exercise Price Code Shares A/D Expiration Underlying Ownership
2018-08-17 Restricted Stock Units $ M 1003 Disposed Common Stock (1003) Direct
2018-08-17 Restricted Stock Units $ A 1409 Acquired Common Stock (1409) Direct
2018-08-18 Restricted Stock Units $ M 1721 Disposed Common Stock (1721) 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: On August 17, 2016 the reporting person was granted 3,009 restricted stock units vesting in three equal installments beginning on the first anniversary of the grant date.

F3: On August 18, 2017 the reporting person was granted 1,721 restricted stock units vesting on the first anniversary of the grant date.

F4: All of the restricted stock units will vest on August 17, 2019.

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 eporting 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.