---
schema_version: "secwatch.filing_event.v1"
accession: "0001410578-25-002261"
form_type: "8-K"
ticker: "DUK"
cik: "0001326160"
company_name: "Duke Energy CORP"
filed_at: "2025-09-12T23:59:59+00:00"
generated_at: "2026-05-17T06:43:30.154943+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# Duke Energy appoints former Pinnacle West CEO Jeffrey Guldner to board

## Summary
- Jeffrey Guldner appointed to Duke Energy board effective Sept. 15, 2025, term expiring at 2026 annual meeting.
- Guldner retired as chairman, president & CEO of Pinnacle West/APS on March 31, 2025.
- He will serve on Compensation and People Development Committee and Finance and Risk Management Committee.
- Guldner remains employed by Pinnacle West in non-executive advisory capacity through March 2026.
- Independence determined per NYSE standards; no disclosable transactions or arrangements.

## SEC filing metadata
- accession: 0001410578-25-002261
- form_type: 8-K
- ticker: DUK
- cik: 0001326160
- company_name: Duke Energy CORP
- filed_at: 2025-09-12T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 5.02, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1326160/000141057825002261/0001410578-25-002261-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1326160/000141057825002261/tm2525830d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001410578-25-002261
- JSON: https://secwatch.observer/filing/0001410578-25-002261.json
- Plain text: https://secwatch.observer/filing/0001410578-25-002261.txt

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