Westlake Corporation (NYSE: WLK) today announced an advance in the company’s sustainability objectives to further reduce its carbon emissions intensity by 20% by 2030, from a 2016 baseline, which is one of the company’s sustainability goals. Westlake recently entered into an agreement with a solar renewable-energy three-farm project that generates approximately 160,000 megawatt-hours per year of renewable energy and purchased the associated renewable energy certificates (RECs). The RECs are utilized as part of this multi-year purchase agreement to offset Westlake’s electricity consumption attributed to powering its operations. Westlake is evaluating the best use of REC’s to enhance its downstream product offerings. “The incorporation of purchased RECs into our broader sustainability strategy is an important step in our ongoing efforts to cut greenhouse gas emissions,” said Tim Hunt, Vice President, Corporate Development and Sustainability. “This initiative not only advances our own

$0.53 per share dividend declared payable on September 4, 2025 The Board of Directors of Westlake Corporation (NYSE: WLK) today declared a regular dividend distribution of $0.53 per share for the second quarter of 2025. This dividend will be payable on September 4, 2025 to stockholders of record on August 19, 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, 2024, which was filed with the SEC in February 2025, and Westlake’s Quarterly Report on Form 10-Q for the quarter

Declared quarterly distribution of $0.4714 per unit; 44 th consecutive quarterly distribution Westlake Chemical Partners LP (NYSE: WLKP) (the "Partnership") today reported net income attributable to the Partnership in the second quarter of 2025 of $14.6 million, or $0.41 per limited partner unit, which was in line with second quarter 2024 net income of $14.4 million. Cash flows from operating activities in the second quarter of 2025 were $9.1 million, a decrease of $112.8 million compared to second quarter 2024 cash flows from operating activities of $121.9 million. For the three months ended June 30, 2025, MLP distributable cash flow was $15.0 million, a decrease of $2.1 million compared to second quarter 2024 MLP distributable cash flow of $17.1 million. The decrease in MLP distributable cash flow and associated trailing twelve-month coverage ratio was primarily due to higher maintenance capital expenditures as a result of the Petro 1 turnaround. Compared to the first quarter of

Westlake Corporation (NYSE: WLK) (the "Company" or "Westlake") today announced second quarter 2025 results. SUMMARY FINANCIAL HIGHLIGHTS (in millions of dollars, except per share data and percentages)       Three Months Ended June 30, 2025   Three Months Ended March 31, 2025   Three Months Ended June 30, 2024               Westlake Corporation             Net sales   $ 2,953     $ 2,846     $ 3,207   Income (loss) from operations   $ (109 )   $ (32 )   $ 406   Net income (loss) attributable to Westlake Corporation   $ (142 )   $ (40 )   $ 313   Diluted earnings (loss) per common share   $ (1.11 )   $

$0.4714 per unit distribution declared payable on August 27, 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 44th quarterly distribution announced by the Partnership since its initial public offering. The distribution will be payable on August 27, 2025, to unit holders of record on August 12, 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 Chemical

Westlake Chemical Partners (NYSE: WLKP) will release its second quarter 2025 earnings prior to the market opening on Tuesday, August 5, 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-conf.media-server.com/register/BIf0b548fd1a0f4090a6412d4c570773b1 . 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/2tzqbx2j 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 second quarter 2025 earnings prior to the market opening on Tuesday, August 5, 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-conf.media-server.com/register/BIb6ee891623b645e0acda053a745bacce . 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/o3z3qmbm 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

Westlake Corporation (NYSE: WLK) announced today that Westlake Epoxy will collaborate with Alpha Recyclage Composites to support them in scaling up the recycling capacity for carbon fiber composite materials. This collaboration will provide support to Westlake’s composite customers in their development of improved circular options for both production (scrap or off spec composite materials that otherwise become waste) and end-of-life waste. The recovery of the carbon fibers from composite materials for reuse in new or emerging applications aims to establish a more sustainable alternative to traditional disposal methods such as landfilling and incineration. Alpha Recyclage Composites, a family-owned company based in Toulouse and Castelsarrasin, France, specializes in recycling carbon-fibers-reinforced composites through a patented steam pyrolysis process. This innovative technology preserves the performance qualities of the carbon fibers used in composite materials recovered from

$0.525 per share dividend declared payable on June 5, 2025 The Board of Directors of Westlake Corporation (NYSE: WLK) today declared a regular dividend distribution of $0.525 per share for the first quarter of 2025. This dividend will be payable on June 5, 2025 to stockholders of record on May 20, 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, 2024, which was filed with the SEC in February 2025, and Westlake’s Quarterly Report on Form 10-Q for the quarter ended March