---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-25-071391"
form_type: "8-K"
ticker: "DUK"
cik: "0001326160"
company_name: "Duke Energy CORP"
filed_at: "2025-07-29T23:59:59+00:00"
generated_at: "2026-05-17T23:34:05.130005+00:00"
event_type: "m_and_a"
sentiment: "positive"
materiality_score: 0.8
calibrated_materiality_score: 0.8
confidence: "high"
source: SEC EDGAR
---

# Duke Energy sells Piedmont Natural Gas Tennessee business to Spire for $2.48B

## Summary
- Purchase price represents 1.8x 2024 year-end rate base and 24x 2024 earnings.
- Approximately $800M of proceeds to offset Piedmont debt; net $1.5B to fund $83B capital plan.
- Transaction subject to TN Public Utility Commission approval and HSR waiting period; expected close Q1 2026.
- Duke Energy reaffirms 2025 adjusted EPS guidance of $6.17-$6.42 and 5-7% long-term growth rate.
- After-tax proceeds of $1.5B satisfy vast majority of common equity needs through 2026.

## SEC filing metadata
- accession: 0001104659-25-071391
- form_type: 8-K
- ticker: DUK
- cik: 0001326160
- company_name: Duke Energy CORP
- filed_at: 2025-07-29T23:59:59+00:00
- event_type: m_and_a
- sentiment: positive
- materiality_score: 0.8
- calibrated_materiality_score: 0.8
- confidence: high
- sec_items: 1.01, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1326160/000110465925071391/0001104659-25-071391-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/78460/000110465925071391/tm2521862d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-25-071391
- JSON: https://secwatch.observer/filing/0001104659-25-071391.json
- Plain text: https://secwatch.observer/filing/0001104659-25-071391.txt

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