---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-26-038007"
form_type: "8-K"
ticker: "DUK"
cik: "0001326160"
company_name: "Duke Energy CORP"
filed_at: "2026-04-01T23:59:59+00:00"
generated_at: "2026-05-15T07:57:04.254303+00:00"
event_type: "m_and_a"
sentiment: "positive"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Duke Energy completes sale of Piedmont TN gas business to Spire for $2.48B

## Summary
- Completed sale of Piedmont Tennessee natural gas business to Spire for $2.48B cash on March 31, 2026.
- $800M proceeds used for debt paydown; net $1.5B to fund Duke's $103B capital plan.
- Transaction includes ~3,800 miles of pipelines, 200K+ customers; employees transitioned to Spire.
- Estimated pre-tax gain of $693M per pro forma; pro forma net income $887M for Piedmont.

## SEC filing metadata
- accession: 0001104659-26-038007
- form_type: 8-K
- ticker: DUK
- cik: 0001326160
- company_name: Duke Energy CORP
- filed_at: 2026-04-01T23:59:59+00:00
- event_type: m_and_a
- sentiment: positive
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 2.01, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1326160/000110465926038007/0001104659-26-038007-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/78460/000110465926038007/tm2610676d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-26-038007
- JSON: https://secwatch.observer/filing/0001104659-26-038007.json
- Plain text: https://secwatch.observer/filing/0001104659-26-038007.txt

## Source-grounded claims
- claim_id: da7d7ce4eb2291079c8062d7d819531c3c1e42ca
  claim: Duke Energy CORP completed a disposition involving Spire Tennessee Inc. for $2.48 billion in cash (closed 2026-03-31).
  evidence_excerpt: On March 31, 2026, and pursuant to the Purchase Agreement, Piedmont completed the Transaction for $2.48 billion in cash, subject to customary purchase price adjustments as set forth in the Purchase Agreement.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1326160/000110465926038007/0001104659-26-038007-index.htm

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