Duke Energy appoints Joyce Mullen to board, Audit and Nuclear Oversight committees

Duke Energy Corporation (NYSE: DUK) said its board appointed Joyce Mullen as a director effective Sept. 28, with an initial term expiring at the 2027 annual meeting of shareholders, according to a Form 8-K filed Sept. 25.

The board also appointed Mullen to the Audit Committee and the Operations and Nuclear Oversight Committee, effective the same date. The board determined she is independent under Duke Energy’s Standards for Assessing Director Independence, New York Stock Exchange listing standards, and SEC rules.

Mullen retired as president and chief executive officer of Insight Enterprises in April 2026 and continues to advise Insight’s leadership as executive vice president of strategic development. She joined Insight in October 2020 as president of North America after executive roles at Dell Technologies and earlier leadership positions at Cummins Engine Company. She also serves on the board of The Toro Company.

As a non-employee director, Mullen will receive a pro-rated cash and stock annual retainer under Duke Energy’s Director Compensation Program and will be subject to stock-ownership guidelines requiring outside directors to hold common stock or equivalents equal to at least five times the annual board cash retainer—an ownership level of $700,000—or retain 50% of their vested annual equity retainer, the filing said.

President and CEO Harry Sideris said in the accompanying press release that Mullen’s experience as a transformative leader will help accelerate how Duke Energy shapes the future of energy. Independent chair Ted Craver cited her perspective at the intersection of AI, digital innovation, and customer-focused execution.

By the numbers

• Effective date: Sept. 28, 2026
• Initial term: through 2027 annual meeting
• Committees: Audit; Operations and Nuclear Oversight
• Outside-director ownership guideline: $700,000 (5× annual board cash retainer)

Sources

1. Duke Energy Corporation Form 8-K, filed Sept. 25, 2026, accession 0001104659-26-110588
2. Duke Energy Corporation Form 8-K Exhibit 99.1 press release, Sept. 25, 2026

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