$0.4714 per unit distribution declared payable on August 27, 2024 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 of $0.4714 per unit. This is the 40th quarterly distribution announced by the Partnership since its initial public offering. The distribution will be payable on August 27, 2024, to unit holders of record on August 12, 2024. 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 Chemical Partners LP Westlake Chemical

Westlake Chemical Partners (NYSE: WLKP) will release its second quarter 2024 earnings prior to the market opening on Tuesday, August 6, 2024. 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 by phone, it is necessary to pre-register at https://register.vevent.com/register/BI05d1ab2ca68249b69a922d0eae472d31 . Once registered, you will receive a phone number and unique PIN number. When you dial in, you will input the PIN number to be placed into the call. The conference call and replay will be available via webcast at https://edge.media-server.com/mmc/p/qjg77gba and the earnings release can be obtained via the company's Web page at, https://investors.wlkpartners.com/corporate-profile/default.aspx . About Westlake Chemical Partners: Westlake Chemical Partners is a limited partnership formed by Westlake Corporation to operate, acquire and develop ethylene production

Westlake Corporation (NYSE: WLK) will release its second quarter 2024 earnings prior to the market opening on Tuesday, August 6, 2024. 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 by phone, it is necessary to pre-register at https://register.vevent.com/register/BI9ab6061c43e746338afcdc616da9a809 . Once registered, you will receive a phone number and unique PIN number. When you dial in, you will input the PIN number to be placed into the call. The conference call and replay will be available via webcast at https://edge.media-server.com/mmc/p/j9tcjmaf and the earnings release can be obtained via the company’s Web page at https://investors.westlake.com/news/default.aspx . 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

Westlake Innovations, Inc., a subsidiary of Westlake Corporation (NYSE: WLK), today announced the company has invested in the Blackhorn Industrial Impact Fund II. The fund seeks to invest in 40 capital-efficient companies enabling the decarbonization of the toughest-to-transition sectors in the U.S. economy. Westlake’s action builds upon the company’s commitment to helping develop a more sustainable future through continuous improvement of its own manufacturing as well as strategic investments in innovative technologies and startup firms.

Jean-Marc Gilson, Experienced Chemicals Industry Executive, Appointed Director, President and CEO Albert Chao and James Chao to Remain Actively Engaged as Executive Chairman and Senior Chairman of the Board, Respectively Westlake Chemical Partners GP LLC, the general partner of Westlake Chemical Partners LP (NYSE: WLKP), today announced that Jean-Marc Gilson, who most recently served as President and Chief Executive Officer of Mitsubishi Chemical Group Corporation, has been appointed to serve as President and Chief Executive Officer and to the Board of Directors of Westlake Chemical Partners GP LLC (the “Board”). Jean-Marc Gilson succeeds Albert Chao who will transition to become Executive Chairman of the Board and James Chao, the current Chairman of the Board, will become Senior Chairman of the Board. These appointments take effect today. Jean-Marc Gilson, named President and Chief Executive Officer of Westlake Corporation (Photo: Business Wire) James Chao said, “This announcement is

Jean-Marc Gilson, Experienced Chemicals Industry Executive, Appointed President and CEO Albert Chao and James Chao to Remain Actively Engaged as Executive Chairman and Senior Chairman of the Board, Respectively Westlake Corporation (NYSE: WLK) (the “Company” or “Westlake”) today announced that Jean-Marc Gilson, who most recently served as President and Chief Executive Officer of Mitsubishi Chemical Group Corporation, has been appointed by the Board of Directors to serve as President and Chief Executive Officer of Westlake. Jean-Marc Gilson succeeds Albert Chao, who will transition to become Executive Chairman of the Westlake Board of Directors. James Chao, the current Chairman of the Board, will become Senior Chairman of the Westlake Board of Directors. These appointments take effect today. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20240715230107/en/ Jean-Marc Gilson, new President and Chief Executive Officer of Westlake

Westlake Vinnolit won the PVC category of the 2024 ‘Polymer Producer Awards’ by the Polymers for Europe Alliance (PEA), applying PEA criteria focused on delivery reliability, circularity, quality, communication, innovation and commitment to the European Market. Westlake Vinnolit also won PEA's ‘Overall Award – Decarbonization’, in recognition of the company's achievements in the field of CO2-saving PVC resins. This year, a particularly large number of plastics converters took part in the annual polymer producers’ assessment sponsored by the Polymers for Europe Alliance . All polymers users in Europe had until mid-May to vote and rate their polymer suppliers' performance during the past 12 months. Following this year's key criteria delivery reliability, circularity, quality, communication, innovation and commitment to the European Market, Westlake Vinnolit won the PVC category with 92% of the vote. "We are delighted with this great success and would like to thank our customers for

Net income of $394 million increased 70% from fourth quarter 2022 Westlake Corporation (NYSE: WLK) (the "Company" or "Westlake") today announced first quarter 2023 results. SUMMARY FINANCIAL HIGHLIGHTS ($ in millions except per share data)     Three Months Ended March 31, 2023   Three Months Ended December 31, 2022   Three Months Ended March 31, 2022                     Westlake Corporation                   Net sales   $ 3,356     $ 3,299     $ 4,056   Income from operations   $ 536     $ 327     $ 1,032   Operating income margin     16%       10%       25%   Net income attributable to Westlake Corporation   $ 394    

Housing and Infrastructure Products segment provided earnings stability Cash from operations of $555 million and free cash flow of $315 million Westlake Corporation (NYSE: WLK) (the "Company" or "Westlake") today announced second quarter 2023 results. SUMMARY FINANCIAL HIGHLIGHTS ($ in millions except per share data)     Three Months Ended June 30, 2023   Three Months Ended March 31, 2023   Three Months Ended June 30, 2022                     Westlake Corporation                   Net sales   $ 3,251     $ 3,356     $ 4,483   Income from operations   $ 396     $ 536     $ 1,175   Operating income margin     12%       16%       26%   Net income attributable to Westlake Corporation   $ 297