VST: Other company developments

Item 8.01. Other Events On July 14, 2026, Vistra Corp. (the “Company” or “Vistra”) received its results from the PJM Capacity Auction for planning year 2028/2029. The Company cleared a total of approximately 10,924 megawatts (MW) in the auction at a weighted average clearing price of $325.00 per megawatt-day. The table below lists Vistra’s cleared capacity and associated clearing price for the 2028/2029 capacity auction by zone. Zone Clearing Price ($/MW-d) Total MWs Cleared RTO $ 325.00 4,129.90 COMED $ 325.00 1,174.00 DEOK $ 325.00 927.50 EMAAC $ 325.00 1,819.00 MAAC $ 325.00 584.80 ATSI $ 325.00 2,069.50 DOM $ 325.00 219.70 Total $ 325.00 10,924.40 About Vistra Vistra (NYSE: VST) is a leading Fortune 500 integrated retail electricity and power generation company based in Irving, Texas, that provides essential resources to customers, businesses, and communities from California to Maine. Vistra is a leader in transforming the energy landscape, with an unyielding focus on reliability, affordability, and sustainability. The company safely operates a reliable, efficient power generation fleet of natural gas, nuclear, coal, solar, and battery energy storage facilities while taking an innovative, customer-centric approach to its retail business. Learn more at vistracorp.com. Cautionary Note Regarding Forward-Looking Statements The information presented herein includes forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. These forward-looking statements, which are based on current expectations, estimates and projections about the industry and markets in which Vistra operates and beliefs of and assumptions made by Vistra’s management, involve risks and uncertainties, which are difficult to predict and are not guarantees of fut