Westlake Chemical Corporation Declares Quarterly Dividend

– $0.2500 cents per share dividend declared payable on June 12, 2019

HOUSTON–(BUSINESS WIRE)–The Board of Directors of Westlake Chemical Corporation (NYSE:WLK)
declared today a regular dividend distribution of $0.2500 per share.
This dividend will be payable on June 12, 2019, to stockholders of
record on May 29, 2019.

This is the 59th successive quarterly dividend that Westlake has
declared since completing its initial public offering in August 2004.

About Westlake Chemical Corporation

Westlake Chemical Corporation is an international manufacturer and
supplier of petrochemicals, polymers and building products with
headquarters in Houston. The company’s range of products includes:
ethylene, polyethylene, styrene, propylene, chlor-alkali and derivative
products, PVC suspension and specialty resins, PVC compounds, and PVC
building products including siding, pipe, fittings and specialty
components, windows, fence, deck and film. For more information, visit
the company’s Web site at www.westlake.com.

Contacts

Media Inquiries:
Westlake Chemical
Corp.
Ben Ederington, 713-960-9111

or

Investor
Inquiries:

Westlake Chemical Corp.
Steve Bender,
713-960-9111

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