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NYSE: DUK Duke Energy CORP 8-K

Duke Energy appoints former Insight Enterprises CEO Joyce Mullen to board

Filed September 25, 2026 · Period ending September 24, 2026 · ~1 min read

4 key changes 3 sections

Key Changes

  • medium

    Joyce Mullen, former president and CEO of Insight Enterprises, joins Duke Energy's board effective September 28, 2026, with an initial term expiring at the 2027 annual meeting.

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    Mullen will serve on the Audit Committee and the Operations and Nuclear Oversight Committee, giving her oversight of financial reporting and nuclear operations.

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    The board determined Mullen is independent under Duke Energy's standards, NYSE listing standards, and SEC rules.

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    Mullen will receive a pro-rated annual retainer in cash and stock and is subject to stock ownership guidelines requiring $700,000 in holdings or retention of 50% of vested equity.

Summary

Duke Energy has added a new independent director to its board. Joyce Mullen, who retired as president and CEO of Insight Enterprises in April 2026, will join the board effective September 28, 2026, and serve on the Audit Committee and the Operations and Nuclear Oversight Committee. Her initial term runs until the 2027 annual meeting of shareholders. For retail investors, this is a routine governance update.

Mullen brings executive leadership experience from the technology sector, and the board has determined she meets all independence requirements. She will receive standard director compensation and is subject to the company's stock ownership guidelines. The appointment does not signal any change in strategy or financial condition.

Section-by-Section Diff

Event · Item 5.02 — Departure of Directors or Certain Officers; Election of Directors; Compensation

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Item 5.02 — Departure of Directors or Certain Officers; Election of Directors; Compensation filed; see Key Changes for terms.

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Added in current filing · verify on EDGAR →

Ms. Mullen will receive a pro-rated payment of the cash and stock annual retainer and will be eligible for other retainers, if applicable, in accordance with the Corporation’s Director Compensation Program

As a non-employee director, Ms. Mullen will receive a pro-rated annual retainer in cash and stock, plus other retainers as applicable under the company's Director Compensation Program.

Event · Item 8.01 — Other Events

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Duke Energy announces appointment of Ms. Mullen to its Board of Directors.

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On September 25, 2026, the Corporation issued a press release announcing Ms. Mullen’s appointment to the Board.

The filing discloses that Ms. Mullen has been appointed to Duke Energy's Board of Directors, with the announcement made via press release on September 25, 2026. No further details about her background or committee assignments are provided in this 8-K body.

Event · Exhibit 99.1

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Duke Energy’s board of directors today announced the appointment of Joyce Mullen as a new board member, effective Sept. 28.

Joyce Mullen, who retired as president and CEO of Insight Enterprises in April 2026, joins Duke Energy's board effective Sept. 28. She will serve on the Audit Committee and the Operations and Nuclear Oversight Committee.

Added Committee assignments medium

Added in current filing · view on EDGAR →

Mullen will serve on the Audit Committee and the Operations and Nuclear Oversight Committee.

Mullen's committee assignments include the Audit Committee, which oversees financial reporting and internal controls, and the Operations and Nuclear Oversight Committee, which oversees operational and nuclear safety matters.

Added New director background medium

Added in current filing · view on EDGAR →

Mullen retired as president and CEO of Insight Enterprises in April 2026. She continues to advise its leadership as executive vice president of strategic development.

Mullen brings executive leadership experience from Insight Enterprises, where she served as CEO, and a 21-year tenure at Dell Technologies. Her background in AI, digital innovation, and customer-focused execution is highlighted by the board as valuable for Duke Energy's strategy.

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Figures/quotes linked to EDGAR · Narrative written by AI · Sep 28, 2026 · How we verify