DUK: Material agreement

Item 1.01. Entry into a Material Definitive Agreement. On November 9, 2026, Duke Energy Corporation (the “Corporation”), Duke Energy Carolinas, LLC (“Duke Energy Carolinas”), Duke Energy Florida, LLC, Duke Energy Indiana, LLC, Duke Energy Kentucky, Inc., Duke Energy Ohio, Inc., Duke Energy Progress, LLC (“Duke Energy Progress”), and Piedmont Natural Gas Company, Inc., entered into an Amendment No. 4 and Consent (the “Amendment”) to amend the existing Amended and Restated Credit Agreement dated as of March 18, 2022, among the Corporation and each of such subsidiaries, as Borrowers, the lenders listed therein, and Wells Fargo Bank, National Association, as Administrative Agent and Swingline Lender. On January 1, 2027, the Corporation expects to effect an internal reorganization of its wholly-owned subsidiaries, Duke Energy Carolinas and Duke Energy Progress, pursuant to which Duke Energy Progress will merge with and into Duke Energy Carolinas, with Duke Energy Carolinas as the surviving entity (the “Combination”). The Amendment, among other changes, obtains consent from each of the lenders to permit the Combination. A copy of the Amendment is filed as Exhibit 10.1 hereto and is incorporated by reference herein. The foregoing description of the Amendment in this Item 1.01 is qualified in its entirety by reference to the full text of the Amendment. Item 9.01. Financial Statements and Exhibits. (d) Exhibits. 10.1 Amendment No. 4 and Consent, dated as of November 9, 2026, by and among Duke Energy Corporation, Duke Energy Carolinas, LLC, Duke Energy Ohio, Inc., Duke Energy Indiana, LLC, Duke Energy Kentucky, Inc., Duke Energy Progress, LLC, Duke Energy Florida, LLC and Piedmont Natural Gas Company, Inc., the Lenders party thereto, the Issuing Lenders party thereto, and Wells F