VST: Material agreement · New financial obligation

Item 1.01. Entry into a Material Definitive Agreement. Accounts Receivable Securitization Facility On July 10, 2026, TXU Energy Retail Company LLC (“TXU Retail”), TXU Energy Receivables Company LLC (“TXU Receivables”), a wholly owned subsidiary of TXU Retail, and Vistra Operations Company LLC (“Vistra Operations”), each of which are indirect, wholly owned subsidiaries of Vistra Corp., entered into an amendment (the “RPA Amendment”) to the Receivables Purchase Agreement dated as of August 21, 2018 (as amended, supplemented or otherwise modified from time to time, the “RPA”) among TXU Receivables, as seller, TXU Retail, as servicer, Vistra Operations, as performance guarantor, certain purchaser agents and purchasers named therein and Credit Agricole Corporate and Investment Bank, as administrator. The RPA Amendment amends certain provisions of the RPA, including (i) increasing the aggregate commitment of the committed purchasers from $1.1 billion to $1.25 billion and (ii) extending the term of the RPA until July 9, 2027. A copy of the RPA Amendment is included as Exhibit 4.1 to this Current Report and is incorporated herein by reference. The above description of the RPA Amendment does not purport to be complete and is qualified in its entirety by reference to the full text of the RPA Amendment. Repurchase Facility On July 10, 2026, TXU Retail, as seller and seller party agent, Vistra Operations, as guarantor, the originators named therein (collectively with TXU Retail, the “Originators”), and MUFG Bank, Ltd., as buyer (“Buyer”), entered into an amendment (the “Framework Amendment”) to the Master Framework Agreement, dated as of October 9, 2020 (as amended, supplemented or otherwise modified from time to time, the “MFA”), among TXU Retail, the Originators, and Buyer. The F