---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-26-110588"
form_type: "8-K"
ticker: "DUK"
cik: "0001326160"
company_name: "Duke Energy CORP"
filed_at: "2026-09-25T10:30:27+00:00"
generated_at: "2026-10-12T13:17:34.861620+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.2
calibrated_materiality_score: 0.2
confidence: "high"
source: SEC EDGAR
---

# Duke Energy adds Joyce Mullen to board, effective Sept. 28, 2026

## Summary
- Board appointed Joyce Mullen as director effective Sept. 28, 2026; initial term expires at the 2027 Annual Meeting of Shareholders.
- Mullen will serve on the Audit Committee and the Operations and Nuclear Oversight Committee, effective Sept. 28, 2026.
- Mullen retired as president and CEO of Insight Enterprises in April 2026 and continues there as EVP of strategic development; she previously spent 21 years at Dell Technologies.
- Board determined Mullen is independent under NYSE listing standards and Duke's director independence standards; she also serves on The Toro Company board.
- As a non-employee director she receives a pro-rated cash and stock retainer and is subject to stock ownership guidelines requiring holdings of at least $700,000.

## SEC filing metadata
- accession: 0001104659-26-110588
- form_type: 8-K
- ticker: DUK
- cik: 0001326160
- company_name: Duke Energy CORP
- filed_at: 2026-09-25T10:30:27+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.2
- calibrated_materiality_score: 0.2
- confidence: high
- sec_items: 5.02, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1326160/000110465926110588/0001104659-26-110588-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1326160/000110465926110588/tm2626114d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-26-110588
- JSON: https://secwatch.observer/filing/0001104659-26-110588.json
- Plain text: https://secwatch.observer/filing/0001104659-26-110588.txt

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