Third quarter net income of $57 million, or $0.45 per diluted share Lake Charles, Louisiana olefins and vinyls facilities impacted by Hurricane Laura Third quarter net income includes pre-tax restructuring charges of $34 million, or $0.19 per diluted share Nov. 3, 2020- Westlake Chemical Corporation (NYSE: WLK) (the "Company" or "Westlake") today reported net income attributable to Westlake for the three months ended September 30, 2020 of $57 million, or $0.45 per diluted share, on net sales of $1,898 million. Net income in the third quarter of 2020 decreased by $101 million compared to third quarter 2019 net income of $158 million, or $1.22 per share, on net sales of $2,066 million. Income from operations of $79 million for the third quarter of 2020 decreased by $147 million from income from operations of $226 million for the third quarter of 2019. These decreases in net income and operating income were largely attributable to the impacts from Hurricane Laura, which included lost

Maintained quarterly distribution of $0.4714 per unit with a 1.13x trailing twelve-month distribution coverage; 25th consecutive quarterly distribution to our unitholders Nov. 3, 2020- Westlake Chemical Partners LP (NYSE: WLKP) (the "Partnership") today reported net income attributable to the Partnership of $18.5 million, or $0.53 per limited partner unit, for the three months ended September 30, 2020. In connection with Hurricane Laura, which struck Lake Charles, Louisiana on August 27, 2020, Westlake Chemical OpCo LP ("OpCo") declared a force majeure event with respect to its Petro 1 and Petro 2 facilities located in Lake Charles under OpCo's ethylene sales agreement with Westlake Chemical Corporation ("Westlake Chemical"). Under this agreement, Westlake Chemical is obligated to purchase a defined amount of ethylene from OpCo each calendar year at cost plus a fixed price per pound. In the third quarter, Westlake Chemical was obligated to pay OpCo the fixed margin and certain other

$0.2700 cents per share dividend declared payable on December 9, 2020 Nov. 13, 2020- The Board of Directors of Westlake Chemical Corporation (NYSE:WLK) declared today a regular dividend distribution of $0.2700 per share for the third quarter of 2020. This dividend will be payable on December 9, 2020, to stockholders of record on November 24, 2020. This is the 65th 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, we provide the building blocks for vital solutions — from packaging and healthcare products to automotive and consumer goods, to building and construction products. For more information, visit the company's web site at www.westlake.com . View source version on businesswire.com: https://www.businesswire.com/news/home/20201113005689/en/ Media Inquiries:

Nov. 18, 2020- Westlake Chemical Corporation (NYSE: WLK) announced today that Mr. Roger Kearns has been appointed by the Board of Directors as Executive Vice President and Chief Operating Officer, effective Jan. 1, 2021. In this new role, he will continue to report to Mr. Albert Chao, Westlake’s President and CEO. Mr. Kearns will be responsible for all of the company’s chemical businesses and manufacturing operations in North America, Europe and Asia. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20201118005823/en/ Roger Kearns Named Westlake Executive Vice President and Chief Operating Officer, effective Jan. 1, 2021 (Photo: Business Wire) Mr. Chao stated, “Since joining the Westlake executive management team, Roger has provided great insight and leadership based on his years of experience as an international chemical industry executive. By asking Roger to oversee our global chemical businesses and operations, we are

$0.4714 cents per unit distribution declared payable on February 19, 2021 The Board of Directors of Westlake Chemical Partners GP LLC, the general partner of Westlake Chemical Partners LP (the "Partnership") (NYSE:WLKP), has declared a distribution by the Partnership of $0.4714 per unit. This is the 26th consecutive quarterly distribution announced by the Partnership since its initial public offering. The distribution will be payable on February 19, 2021, to unit holders of record on February 4, 2021. This release is intended to be a qualified notice under Treasury Regulation Section 1.1446-4(b). Brokers and nominees should treat one hundred percent (100.0%) of the Partnership’s distributions to non-U.S. investors as being attributable to income that is effectively connected with a United States trade or business. Accordingly, the Partnership’s distributions to non-U.S. investors are subject to federal income tax withholding at the highest applicable effective tax rate. About Westlake

HOUSTON --(BUSINESS WIRE)--Jul. 14, 2020-- Westlake Chemical Corporation (NYSE: WLK) today confirmed that one of its subsidiaries has been named in a European Commission decision regarding certain anti-competitive practices in the purchasing of ethylene that occurred prior to 2017.

HOUSTON --(BUSINESS WIRE)--Jun. 25, 2020-- Westlake Chemical Corporation (NYSE:WLK) announced today that it has directed the Louisiana Local Governmental Environmental Facilities and Community Development Authority (the “Authority”) to optionally redeem in full $100 million aggregate principal

HOUSTON --(BUSINESS WIRE)--Jun. 9, 2020-- Westlake Chemical Corporation (NYSE: WLK) (“Westlake”) announced today the commencement of an underwritten public offering, subject to market and other conditions, of senior unsecured notes (the “Notes”) under its existing shelf registration statement.