Welcome to our dedicated page for Duke Energy SEC filings (Ticker: DUK), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Duke Energy Corporation filings document the regulatory record of a Delaware energy holding company with electric and natural gas utility subsidiaries. Disclosures cover material events, operating and financial results, governance matters, shareholder voting, annual meeting proxy materials, and capital-structure matters tied to its regulated utility business.
The filing record identifies registered securities including DUK common stock, junior subordinated debentures, depositary shares representing Series A preferred stock, and senior notes listed on the New York Stock Exchange. SEC reports also reference major subsidiaries such as Duke Energy Carolinas, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio, Duke Energy Indiana and Piedmont Natural Gas, along with disclosures on infrastructure investment, generation resources, regulatory matters and risk factors.
Duke Energy Corporation furnished a current report indicating it will issue and post a news release announcing its financial results for the third quarter ended September 30, 2025. The release is included as Exhibit 99.1 and is furnished under Item 2.02.
The company notes this information is being furnished, not filed, and therefore is not subject to Section 18 liability. The filing also lists NYSE‑traded securities, including common stock (DUK) and various notes, preferred and hybrid securities.
Duke Energy Progress reached a partial settlement with South Carolina’s regulatory staff in its base rate case. The agreement outlines a return on equity of 9.99% using a capital structure of 53% equity and 47% debt, producing an overall rate of return of 7.2%. It also sets a South Carolina retail rate base of $2.2 billion and provides for nuclear and other production tax credit flow backs to customers.
Key provisions include support for an annual reserve funding increase to $6 million and support for a pension cost rider. The settlement remains subject to review and approval by the Public Service Commission of South Carolina, and the evidentiary hearing began on October 29, 2025.
Duke Energy Corporation is offering Variable Denomination Floating Rate Demand Notes ("PremierNotes") under a Form S-3 registration statement dated September 30, 2025. The registration covers up to $4,000,000,000 aggregate offering price with a maximum net aggregate principal amount outstanding at any time of $2,000,000,000. The Notes are unsecured, bear a floating interest rate set weekly by a Duke Energy committee, mature on demand, accrue and compound interest daily with monthly automatic reinvestment, and are not rated or guaranteed by subsidiaries. The prospectus discloses consolidated indebtedness as of June 30, 2025 of approximately $86.4 billion and subsidiary indebtedness of approximately $57.8 billion, of which about $650 million is guaranteed by Duke Energy.
Duke Energy Corporation filed a shelf registration (Form S-3) registering unspecified amounts of common stock, preferred stock, depositary shares, stock purchase contracts and units, and various debt securities to be offered from time to time by Duke Energy and several subsidiaries. The registration covers offerings by Duke Energy Corporation and six subsidiaries with securities to be sold separately or together; specific terms and amounts will be provided in prospectus supplements.
The filing describes Duke Energy's business segments, reporting that its Electric Utilities and Infrastructure segment serves approximately 8.6 million customers across about 90,000 square miles, and that the Gas Utilities and Infrastructure segment serves over 1.7 million customers. The prospectus discloses that certain mortgage bonds will be secured by substantially all properties, while other debt securities may be unsecured, and it highlights that holders of debt securities may be junior to creditors of operating subsidiaries. The filing reiterates incorporated-by-reference SEC reports for further detail.
Jeffrey B. Guldner, a director of Duke Energy Corp (ticker shown in filing as DUK; metadata: DUKB), reported a non-derivative acquisition on 09/15/2025. The filing shows 1,005 Restricted Stock Unit deferrals credited under a Director Savings Plan, converting 1-for-1 to common stock and valued at $122.37 per share. The 1,005 shares are reported as directly beneficially owned and are generally payable upon the reporting person’s termination of service. The Form 4 was signed by an attorney-in-fact on 09/16/2025.
Jeffrey B. Guldner, identified as a director of Duke Energy Corp, submitted an initial Section 16 Form 3 stating he does not beneficially own any securities of the issuer. The filing indicates it was submitted as an individual filing and executed on Guldner's behalf by an attorney-in-fact, David S. Maltz. No classes of common stock, options, or other derivative holdings are reported on this Form 3.