$0.357 per share dividend declared payable on June 8, 2023

The Board of Directors of Westlake Corporation (NYSE: WLK) declared today a regular dividend distribution of $0.357 per share for the first quarter of 2023. This dividend will be payable on June 8, 2023, to stockholders of record on May 23, 2023.

This is the 75^th successive quarterly dividend that Westlake has declared since completing its initial public offering in August 2004.

About Westlake

Westlake is a global manufacturer and supplier of materials and innovative products that enhance life every day. Headquartered in Houston, with operations in Asia, Europe and North America, we provide the building blocks for vital solutions — from housing and construction, to packaging and healthcare, to automotive and consumer. For more information, visit the Company's web site at www.westlake.com.

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