DALLAS–(BUSINESS WIRE)–Cardinal Midstream Partners, LLC (the “Company” or “Cardinal”), an independent midstream energy company, today announced that the Company and its financial sponsor EnCap Flatrock Midstream (“EnCap Flatrock”) have entered into a definitive agreement to sell its wholly owned subsidiaries Cardinal Delaware Basin, LLC and Cardinal New Mexico, LLC to San Mateo Midstream, LLC (“San Mateo”) for $752 million. The transaction is expected to close in the third quarter of 2026, su