Sep. 14, 2020- Westlake Chemical Corporation (NYSE: WLK) today announced that the company and the Ting Tsung and Wei Fong Chao Foundation have contributed a combined $500,000 to the United Way of Southwest Louisiana’s Hurricane Laura Disaster Fund. The Hurricane Laura Disaster Fund was established to aid storm victims in the parishes surrounding the greater Lake Charles area. “As a long-time member of the greater Lake Charles community, which is home to Westlake’s largest concentration of employees and where Westlake started with our first plant in 1986, we are saddened by the hundreds of thousands of residents in the area who have been affected by Hurricane Laura,” said Westlake President and CEO Albert Chao, who is also a board member of the charitable foundation established in 1999 by the Chao family. “However, this event has also demonstrated the admirable qualities of the people of the region – their desire to lend a helping hand. We are thankful for the support of organizations

Sep. 22, 2020- Westlake Chemical Corporation (NYSE:WLK) announced that it has directed the Louisiana Local Governmental Environmental Facilities and Community Development Authority (the “Authority”) to optionally redeem in full $89 million aggregate principal amount of the Authority’s Revenue Bonds (Westlake Chemical Corporation Projects), Series 2010A-1 (the “GO Zone Bonds”) and $65 million aggregate principal amount of the Authority’s Revenue Bonds (Westlake Chemical Corporation Projects), Series 2010A-2 (the “Ike Zone Bonds”), in each case, on November 1, 2020 at a redemption price of par, plus accrued and unpaid interest, if any, to the redemption date. The GO Zone Bonds and the Ike Zone Bonds mature on November 1, 2035 and were issued by the Authority for the benefit of Westlake in December 2010 under the Gulf Opportunity Zone Act of 2005 (GO Zone Act) and Section 704 of the Emergency Economic Stabilization Act of 2008, respectively. Westlake expects to purchase the GO Zone Bonds

Oct. 20, 2020- Westlake Chemical Partners (NYSE: WLKP) will release its third quarter 2020 earnings prior to the market opening on Tuesday, Nov. 3, 2020. The company will host a conference call at 1:00 p.m. Eastern Time (12:00 p.m. Central Time) on the same day to discuss the earnings release. To access the conference call, dial (855) 765-5686, or (234) 386-2848 for international callers, approximately 10 minutes prior to the scheduled start time and reference passcode 7787568. The conference call will also be available via webcast at https://edge.media-server.com/mmc/p/3mq3evsr and the earnings release can be obtained via the company's Web page at, https://investors.wlkpartners.com/corporate-profile/default.aspx . A replay of the conference call will be available beginning two hours after its conclusion for seven days. To hear a replay, dial (855) 859-2056 or (404) 537-3406 for international callers. The replay passcode is 7787568. About Westlake Chemical Partners: Westlake Chemical

Oct. 20, 2020- Westlake Chemical Corporation (NYSE: WLK) will release its third quarter 2020 earnings prior to the market opening on Tuesday, Nov. 3, 2020. The company will host a conference call at 11:00 a.m. Eastern Time (10:00 a.m. Central Time) on the same day to discuss the earnings release. To access the conference call, dial (855) 760-8160, or (704) 288-0624 for international callers, approximately 10 minutes prior to the scheduled start time and reference passcode 1896958. The conference call will also be available via webcast at https://edge.media-server.com/mmc/p/wb2cu7ds and the earnings release can be obtained via the company’s Web page at https://www.westlake.com/investor-relations . A replay of the conference call will be available beginning two hours after its conclusion for seven days. To hear a replay, dial (855) 859-2056 or (404) 537-3406 for international callers. The replay passcode is 1896958. About Westlake: Westlake is a global manufacturer and supplier of

$0.4714 cents per unit distribution declared payable on November 24, 2020 Oct. 30, 2020- 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 25th consecutive quarterly distribution announced by the Partnership since its initial public offering. The distribution will be payable on November 24, 2020, to unit holders of record on November 9, 2020. 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.

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