DUK: 10-Q financial filing

duk-20260930 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2026 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from _________to_________ Commission File Number Registrant, State of Incorporation or Organization, Address of Principal Executive Offices, Zip Code and Telephone Number IRS Employer Identification No. 1-32853 DUKE ENERGY CORPORATION 20-2777218 (a Delaware corporation) 525 South Tryon Street Charlotte , North Carolina 28202 800 - 488-3853 1-4928 DUKE ENERGY CAROLINAS, LLC 56-0205520 (a North Carolina limited liability company) 525 South Tryon Street Charlotte , North Carolina 28202 800 - 488-3853 1-15929 PROGRESS ENERGY, INC. 56-2155481 (a North Carolina corporation) 411 Fayetteville Street Raleigh , North Carolina 27601 800 - 488-3853 1-3382 DUKE ENERGY PROGRESS, LLC 56-0165465 (a North Carolina limited liability company) 411 Fayetteville Street Raleigh , North Carolina 27601 800 - 488-3853 1-3274 DUKE ENERGY FLORIDA, LLC 59-0247770 (a Florida limited liability company) 299 First Avenue North St. Petersburg , Florida 33701 800 - 488-3853 1-1232 DUKE ENERGY OHIO, INC. 31-0240030 (an Ohio corporation) 139 East Fourth Street Cincinnati , Ohio 45202 800 - 488-3853 1-3543 DUKE ENERGY INDIANA, LLC 35-0594457 (an Indiana limited liability company) 1000 East Main Street Plainfield , Indiana 46168 800 - 488-3853 1-6196 PIEDMONT NATURAL GAS COMPANY, INC. 56-0556998 (a North Carolina corporation) 525 South Tryon Street Charlotte , North Carolina 28202 800 - 488-3853 SECURITIES REGISTERED PURSUANT TO SECTION 12(b) OF THE