Westlake Corporation (NYSE: WLK) announced today that Westlake Epoxy plans to launch at JEC World, March 4 to 6, 2025, in Paris, EpoVIVE™ , an epoxy product portfolio offering a range of sustainable characteristics across multiple products, which will support customer sustainability initiatives. The EpoVIVE™ portfolio of Epoxy phenolic, resins and curing agents, represents a significant step forward in the commitment to drive sustainable innovation and foster value-chain collaboration. EpoVIVE™ products are developed with an environmentally conscious mindset. The newly introduced EpoVIVE portfolio is distinguished by sustainable benefits, as confirmed by Westlake Epoxy’s evaluation according to industry-leading principles for measuring and assessing sustainable characteristics of each product. Products in the EpoVIVE portfolio provide sustainability advantages as compared to traditional Westlake formulas in one or more of the following categories: Lower Carbon Footprint: Utilize ISCC

Declared quarterly distribution of $0.4714 per unit; 42 nd consecutive quarterly distribution Westlake Chemical Partners LP (NYSE: WLKP) (the "Partnership") today reported net income attributable to the Partnership in the fourth quarter of 2024 of $15.0 million, or $0.43 per limited partner unit, which was relatively in line with fourth quarter 2023 net income of $14.3 million. Cash flows from operating activities in the fourth quarter of 2024 were $132.5 million, an increase of $24.8 million compared to fourth quarter 2023 cash flows from operating activities of $107.7 million, due to higher net income and more favorable working capital changes. For the three months ended December 31, 2024, MLP distributable cash flow was $15.0 million, a decrease of $1.4 million compared to fourth quarter 2023 MLP distributable cash flow of $16.4 million. The decrease in MLP distributable cash flow was primarily due to higher turnaround reserve contributions and maintenance capital contributions to

Record Housing and Infrastructure Products (HIP) annual income from operations of $807 million and EBITDA of $1.1 billion Fifth consecutive quarter of year-over-year growth in company-wide sales volume Westlake Corporation (NYSE: WLK) (the "Company" or "Westlake") today announced fourth quarter and full year 2024 results. SUMMARY FINANCIAL HIGHLIGHTS ($ in millions except per share data and percentages)     Three Months Ended       Twelve Months Ended       December 31,       September 30,       December 31,       December 31,       2024       2024       2023       2024       2023   Westlake Corporation                                       Net sales   $ 2,843       $ 3,117       $ 2,826  

$0.525 per share dividend declared payable on March 19, 2025 The Board of Directors of Westlake Corporation (NYSE: WLK) today declared a regular dividend distribution of $0.525 per share for the fourth quarter of 2024. This dividend will be payable on March 19, 2025 to stockholders of record on March 4, 2025. Westlake announced its first dividend on November 11, 2004 and has successively been paying and increasing its dividend for the past 20 years. The statements in this release that are not historical facts, including statements regarding future payment of dividend, are forward-looking statements. These forward-looking statements are subject to significant risks and uncertainties. For more detailed information about the factors that could cause actual results to differ materially, please refer to Westlake’s Annual Report on Form 10-K for the year ended December 31, 2023, which was filed with the SEC in February 2024, and Westlake’s Quarterly Report on Form 10-Q for the quarter ended

Westlake Chemical Partners (NYSE: WLKP) will release its fourth quarter and full year 2024 earnings prior to the market opening on Monday, February 24, 2025. 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/BI294ab16856704d199e4792cc3d8bb4b0 . 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/s2462hyq 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

Westlake Corporation (NYSE: WLK) will release its fourth quarter and full year 2024 earnings prior to the market opening on Monday, February 24, 2025. 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/BI72061c1352d74b3482abead232a4bf93 . 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/9nttceuz 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,

Today Westlake Corporation (NYSE: WLK) announced that Westlake Compounds LLC has been awarded the esteemed EcoVadis Bronze Medal for its commitment to improved environmental sustainability and management. This accolade places Westlake Compounds LLC among the top 35% of companies assessed by EcoVadis globally. EcoVadis granted Westlake Compounds LLC the Bronze Medal following a third-party assessment of Westlake Global Compounds’ performance at its North American sites. This achievement is a testament to Westlake Corporation’s dedication to implementing and maintaining responsible business practices throughout its international operations. EcoVadis, the world’s largest and most trusted provider of business sustainability ratings, evaluates more than 75,000 companies in over 160 countries across 200 industries. The organization’s rigorous assessment methodology covers four key areas: environment, labor and human rights, ethics, and sustainable procurement. “Receiving the EcoVadis Bronze

$0.4714 per unit distribution declared payable on February 25, 2025 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 42nd quarterly distribution announced by the Partnership since its initial public offering. The distribution will be payable on February 25, 2025, to unit holders of record on February 7, 2025. 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

Westlake Innovations, Inc., a subsidiary of Westlake Corporation (NYSE: WLK), today announced the company has invested in Universal Matter, Inc . The Burlington, Ontario-based company’s vision is to become the leading supplier of high-quality and sustainable graphene and advanced materials to help decarbonize the planet. Westlake’s action builds upon the company’s commitment to helping develop a more sustainable future through continuous improvement its own manufacturing as well as strategic investments in innovative technologies and startup firms. Universal Matter has pioneered and patented Flash Joule Heating (FJH) technology that allows for cost-effective, industrial-scale upcycling of carbon waste streams into high-quality graphene and graphitized carbon. First developed at Rice University, Universal Matter’s FJH technology creates graphene that is tunable across 1D, 2D, and 3D morphologies, granting superior properties that are critical for large industrial applications.