UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 8-K
CURRENT REPORT
Pursuant to Section 13 or 15(d) of the
Securities Exchange Act of 1934
Date of Report (Date of earliest event reported): March 16, 2026
| Commission file number | Exact Name of Registrant as Specified in its Charter, State or other Jurisdiction | IRS Employer Identification No. |
 | ||
| 1-32853 | DUKE ENERGY CORPORATION (a Delaware corporation) 525 South Tryon Street Charlotte, North Carolina 28202 800-488-3853 | 20-2777218 |
| 1-4928 | DUKE ENERGY CAROLINAS, LLC (a North Carolina limited liability company) 525 South Tryon Street Charlotte, North Carolina 28202 800-488-3853 | 56-0205520 |
| 1-3382 | DUKE ENERGY PROGRESS, LLC (a North Carolina limited liability company) 411 Fayetteville Street Raleigh, North Carolina 27601 800-488-3853 | 56-0165465 |
| 1-3274 | DUKE ENERGY FLORIDA, LLC (a Florida limited liability company) 299 First Avenue North St. Petersburg, Florida 33701 800-488-3853 | 59-0247770 |
| 1-1232 | DUKE ENERGY OHIO, INC. (an Ohio corporation) 139 East Fourth Street Cincinnati, Ohio 45202 800-488-3853 | 31-0240030 |
| 1-3543 | DUKE ENERGY INDIANA, LLC (an Indiana limited liability company) 1000 East Main Street Plainfield, Indiana 46168 800-488-3853 | 35-0594457 |
| 1-6196 | PIEDMONT NATURAL GAS COMPANY, INC. (a North Carolina corporation) 525 South Tryon Street Charlotte, North Carolina 28202 800-488-3853 | 56-0556998 |
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:
| ¨ | Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) |
| ¨ | Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) |
| ¨ | Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) |
| ¨ | Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) |
SECURITIES REGISTERED PURSUANT TO SECTION 12(b) OF THE ACT:
| Registrant | Title of each class | Trading Symbol(s) | Name of each exchange on which registered |
| Duke Energy | Common Stock, $0.001 par value | DUK | New York Stock Exchange LLC |
| Duke Energy | 5.625% Junior Subordinated Debentures due September 15, 2078 | DUKB | New York Stock Exchange LLC |
| Duke Energy | each representing a 1/1,000th interest in a share of 5.75% Series A Cumulative Redeemable Perpetual Preferred Stock, par value $0.001 per share | ||
| Duke Energy | 3.10% Senior Notes due 2028 | DUK 28A | New York Stock Exchange LLC |
| Duke Energy | 3.85% Senior Notes due 2034 | DUK34 | New York Stock Exchange LLC |
| Duke Energy | 3.75% Senior Notes due 2031 | DUK 31A | New York Stock Exchange LLC |
Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).
Emerging growth company ¨
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨
| Item 1.01. | Entry into a Material Definitive Agreement. |
On March 16, 2026, Duke Energy Corporation (the “Corporation”), Duke Energy Carolinas, LLC, Duke Energy Florida, LLC, Duke Energy Indiana, LLC, Duke Energy Kentucky, Inc., Duke Energy Ohio, Inc., Duke Energy Progress, LLC, and Piedmont Natural Gas Company, Inc., entered into an Amendment No. 3 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. The Amendment, among other changes, extends the termination date of the credit facility from March 16, 2030 to March 16, 2031.
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. |
| 104 | Cover Page Interactive Data File (embedded within the Inline XBRL document). |
SIGNATURE
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrants have duly caused this report to be signed on their behalf by the undersigned hereunto duly authorized.
| DUKE ENERGY CORPORATION | ||
| Date: March 16, 2026 | DUKE ENERGY OHIO, INC. | |
| PIEDMONT NATURAL GAS COMPANY, INC. | ||
| By: | /s/ Elizabeth H. Jones | |
| Elizabeth H. Jones | ||
| Assistant Corporate Secretary | ||
| DUKE ENERGY CAROLINAS, LLC | ||
| DUKE ENERGY PROGRESS, LLC | ||
| DUKE ENERGY FLORIDA, LLC | ||
| DUKE ENERGY INDIANA, LLC | ||
| By: | /s/ Elizabeth H. Jones | |
| Elizabeth H. Jones | ||
| Assistant Secretary | ||
| Co-Registrant CIK | 0000030371 |
| Co-Registrant Amendment Flag | false |
| Co-Registrant Form Type | 8-K |
| Co-Registrant DocumentPeriodEndDate | 2026-03-16 |
| Co-Registrant Written Communications | false |
| Co-Registrant Solicitating Materials | false |
| Co-Registrant PreCommencement Tender Offer | false |
| Co-Registrant PreCommencement Issuer Tender Offer | false |
| Co-Registrant Emerging Growth Company | false |
| Co-Registrant CIK | 0000017797 |
| Co-Registrant Amendment Flag | false |
| Co-Registrant Form Type | 8-K |
| Co-Registrant DocumentPeriodEndDate | 2026-03-16 |
| Co-Registrant Written Communications | false |
| Co-Registrant Solicitating Materials | false |
| Co-Registrant PreCommencement Tender Offer | false |
| Co-Registrant PreCommencement Issuer Tender Offer | false |
| Co-Registrant Emerging Growth Company | false |
| Co-Registrant CIK | 0000037637 |
| Co-Registrant Amendment Flag | false |
| Co-Registrant Form Type | 8-K |
| Co-Registrant DocumentPeriodEndDate | 2026-03-16 |
| Co-Registrant Written Communications | false |
| Co-Registrant Solicitating Materials | false |
| Co-Registrant PreCommencement Tender Offer | false |
| Co-Registrant PreCommencement Issuer Tender Offer | false |
| Co-Registrant Emerging Growth Company | false |
| Co-Registrant CIK | 0000020290 |
| Co-Registrant Amendment Flag | false |
| Co-Registrant Form Type | 8-K |
| Co-Registrant DocumentPeriodEndDate | 2026-03-16 |
| Co-Registrant Written Communications | false |
| Co-Registrant Solicitating Materials | false |
| Co-Registrant PreCommencement Tender Offer | false |
| Co-Registrant PreCommencement Issuer Tender Offer | false |
| Co-Registrant Emerging Growth Company | false |
| Co-Registrant CIK | 0000081020 |
| Co-Registrant Amendment Flag | false |
| Co-Registrant Form Type | 8-K |
| Co-Registrant DocumentPeriodEndDate | 2026-03-16 |
| Co-Registrant Written Communications | false |
| Co-Registrant Solicitating Materials | false |
| Co-Registrant PreCommencement Tender Offer | false |
| Co-Registrant PreCommencement Issuer Tender Offer | false |
| Co-Registrant Emerging Growth Company | false |
| Co-Registrant CIK | 0000078460 |
| Co-Registrant Amendment Flag | false |
| Co-Registrant Form Type | 8-K |
| Co-Registrant DocumentPeriodEndDate | 2026-03-16 |
| Co-Registrant Written Communications | false |
| Co-Registrant Solicitating Materials | false |
| Co-Registrant PreCommencement Tender Offer | false |
| Co-Registrant PreCommencement Issuer Tender Offer | false |
| Co-Registrant Emerging Growth Company | false |