Aug. 6, 2020- Westlake Chemical Corporation (NYSE: WLK) (the "Company" or "Westlake") today reported net income attributable to Westlake for the three months ended June 30, 2020 of $15 million, or $0.11 per diluted share, on net sales of $1,709 million. Net income in the second quarter of 2020 decreased by $104 million compared to second quarter 2019 net income of $119 million, or $0.92 per share, on net sales of $2,144 million. Income from operations of $36 million for the second quarter of 2020 decreased by $158 million from income from operations of $194 million for the second quarter of 2019. The decreases in net income and operating income were primarily due to the global economic impact from COVID-19 and the significant drop in oil prices, which reduced North American ethylene industry feedstock competitiveness. Reduced demand as a result of the pandemic and lower oil prices led to lower global sales prices for our major products and lower sales volumes for caustic soda and

$0.2700 cents per share dividend declared payable on September 9, 2020 Aug. 14, 2020- The Board of Directors of Westlake Chemical Corporation (NYSE:WLK) declared today a regular dividend distribution of $0.2700 per share for the second quarter of 2020. This dividend will be payable on September 9, 2020, to stockholders of record on August 25, 2020. This is the 64th 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/20200814005477/en/ Media Inquiries:

Aug. 27, 2020- Westlake Corporation (NYSE: WLK) today issued a statement regarding Hurricane Laura, which made landfall near its plants in the Lake Charles, Louisiana area. Westlake’s primary concern is for the safety of our employees. The employees who stayed at our facilities during Hurricane Laura are safe. Westlake’s Lake Charles sites have been conducting equipment assessments, following Hurricane Laura’s overnight move through the area. Following initial facility assessments, Westlake believes it has incurred limited physical damage. Restart of the facilities, which Westlake shut down as a precautionary measure in advance of the storm, will primarily depend upon the availability of electricity, industrial gases, and other feedstocks. The statements in this release relating to matters that are not historical facts, such as Westlake’s belief that it has incurred limited physical damage and the anticipated restart of its facilities, are forward-looking statements. These

Aug. 27, 2020- Westlake Chemical Partners LP (NYSE: WLKP) today issued a statement regarding Hurricane Laura, which made landfall near plants in the Lake Charles, Louisiana area owned by Westlake Chemical OpCo LP (“OpCo”), in which the Partnership owns a 22.8% interest. The Partnership’s primary concern is for the safety of OpCo’s employees. The employees who stayed at OpCo’s facilities during Hurricane Laura are safe. OpCo has been conducting equipment assessments, following Hurricane Laura’s overnight move through the area. Following initial facility assessments, OpCo believes it has incurred limited physical damage. Restart of OpCo’s facilities, which OpCo shut down as a precautionary measure in advance of the storm, will primarily depend upon the availability of electricity, industrial gases, and other feedstocks. “We do not expect any material impact to OpCo or to the Partnership as a result of Hurricane Laura as, pursuant to OpCo’s Ethylene Sales Agreement with affiliates of

Sep. 8, 2020- Westlake Chemical Corporation (NYSE: WLK) today issued a statement updating the impact of Hurricane Laura, which made landfall near its plants in the Lake Charles, Louisiana area. In the aftermath of Hurricane Laura, the safety of our employees and the integrity of our operations in the greater Lake Charles area remain our primary focus. We are working to assist our employees and their families, many of whom have suffered damage to their homes and are without power. Recovery efforts at our plants in the Lake Charles area are underway for the safe and reliable return to operations. Restoration of electricity and other utilities remain critical to these efforts. The local utility, Entergy Louisiana, has reported extensive damage to the electricity transmission system in the Lake Charles area and that restoration of service will take a number of weeks. Given Entergy’s latest guidance on the restoration of power to the Lake Charles area, barring other unforeseen

Sep. 8, 2020- Westlake Chemical Partners LP (NYSE: WLKP) today issued a statement updating the impact of Hurricane Laura, which made landfall near plants in the Lake Charles, Louisiana area owned by Westlake Chemical OpCo LP (“OpCo”), in which the Partnership owns a 22.8% interest. In the aftermath of Hurricane Laura, the Partnership’s primary concern is for the safety of OpCo’s employees and the integrity of its operations in the greater Lake Charles area. We are working to assist OpCo’s employees and their families, many of whom have suffered damage to their homes and are without power. Recovery efforts at OpCo’s plants in the Lake Charles area are underway for the safe and reliable return to operations. Restoration of electricity and other utilities remain critical to these efforts. The local utility, Entergy Louisiana, has reported extensive damage to the electricity transmission system in the Lake Charles area and that restoration of service will take a number of weeks. Given

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