---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-26-025530"
form_type: "8-K"
ticker: "DUK"
cik: "0001326160"
company_name: "Duke Energy CORP"
filed_at: "2026-03-10T23:59:59+00:00"
generated_at: "2026-05-15T15:36:57.143564+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Duke Energy prices upsized $1.3B 3.000% convertible notes due 2029 to refinance existing debt

## Summary
- Upsized private placement of $1.3B in 3.000% convertible senior notes due 2029, increased from $1B.
- Initial conversion price ~$160.57/share, a 22.5% premium over March 9 closing price.
- Net proceeds ~$1.29B (or ~$1.48B if option exercised) to repay $1.725B of 4.125% convertible notes maturing April 15, 2026.
- Interest 3.000% paid semi-annually; maturity March 15, 2029; holders may require repurchase on fundamental change.
- Initial purchasers have option to buy additional $200M notes; closing expected March 12, 2026.

## SEC filing metadata
- accession: 0001104659-26-025530
- form_type: 8-K
- ticker: DUK
- cik: 0001326160
- company_name: Duke Energy CORP
- filed_at: 2026-03-10T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1326160/000110465926025530/0001104659-26-025530-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1326160/000110465926025530/tm268071d3_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-26-025530
- JSON: https://secwatch.observer/filing/0001104659-26-025530.json
- Plain text: https://secwatch.observer/filing/0001104659-26-025530.txt

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