Director Savings Plan Restricted Stock Unit Deferrals

Joyce A. Mullen, a director at Duke Energy CORP (DUK), acquired 1066 units of Director Savings Plan Restricted Stock Unit Deferrals on September 28, 2026. The acquisition, valued at $113.41 per unit, was part of a transaction where these units convert to Common Stock on a 1-for-1 basis. These units are generally payable upon the reporting person's termination of service. The transaction code 'A' indicates an acquisition, and the ownership is marked as direct ('D'). The filing was made on September 30, 2026, with David S. Maltz acting as attorney-in-fact for Mullen.