---
schema_version: "secwatch.filing_event.v1"
accession: "0001410578-25-002058"
form_type: "8-K"
ticker: "DUK"
cik: "0001326160"
company_name: "Duke Energy CORP"
filed_at: "2025-09-11T23:59:59+00:00"
generated_at: "2026-05-17T06:50:35.634316+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# Duke Energy closes $1.75B offering of 4.95% notes due 2035 and 5.70% notes due 2055

## Summary
- Issued $1B of 4.95% Senior Notes due 2035 and $750M of 5.70% Senior Notes due 2055, closed Sept 11, 2025.
- Notes priced at 99.022% and 98.882% of principal; underwriters include Citi, Goldman Sachs, Mizuho, MUFG, PNC, Truist, Wells Fargo.
- Underwriters paid $2.94M to Duke for expenses; terms set in Underwriting Agreement dated Sept 8, 2025.
- Notes issued under June 2008 indenture; Thirty-fifth Supplemental Indenture executed; BNY Mellon as trustee.

## SEC filing metadata
- accession: 0001410578-25-002058
- form_type: 8-K
- ticker: DUK
- cik: 0001326160
- company_name: Duke Energy CORP
- filed_at: 2025-09-11T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1326160/000141057825002058/0001410578-25-002058-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1326160/000141057825002058/tm2524574d4_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001410578-25-002058
- JSON: https://secwatch.observer/filing/0001410578-25-002058.json
- Plain text: https://secwatch.observer/filing/0001410578-25-002058.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.