MDU Resources adds Charles Kelley and Tammy Miller to its board of directors.

MDU Resources Group has appointed Charles M. Kelley and Tammy J. Miller to its board of directors. Kelley brings over 40 years of experience in the natural gas industry, including a 25-year career at ONEOK, Inc. Miller's appointment was not detailed in the announcement. Their expertise is expected to benefit MDU Resources' pipeline subsidiary, WBI Energy.

BISMARCK, N.D., Aug. 13, 2025 /PRNewswire/ -- MDU Resources Group, Inc. (NYSE: MDU) has announced the election of Charles M. Kelley and Tammy J. Miller to its board of directors, effective Aug. 12, 2025. This appointment brings significant expertise to the board, particularly in the natural gas industry and utility sector, which is expected to benefit MDU Resources' pipeline subsidiary, WBI Energy.

Charles M. Kelley, with over four decades of experience in the natural gas industry, most recently served as senior vice president of Natural Gas Pipelines at ONEOK, Inc. During his tenure, he oversaw more than $600 million in capital projects and significantly increased EBITDA. His deep expertise in pipeline development, regulatory strategy, and capital planning is expected to provide valuable insights as WBI Energy pursues growth opportunities in natural gas transmission and storage. Kelley commented, "I'm honored to join MDU Resources' board and contribute to the projected growth of its natural gas infrastructure. I look forward to supporting the company's efforts to deliver safe, reliable energy to its customers."

Tammy J. Miller, a former lieutenant governor of North Dakota, offers a strong combination of executive leadership and public service. She is the former CEO and board chair of Border States, a North Dakota-based electrical distribution company that grew from $485 million to nearly $2.5 billion in annual sales during her tenure. Miller's experience aligns well with MDU Resources' mission and geographic footprint. She currently serves on the board of directors of SkyWater Technology, a publicly traded company, and brings valuable perspectives on public policy, finance, and corporate governance. Miller commented, "It's a privilege to serve on the board of a company rooted in North Dakota. I'm excited to help MDU Resources' mission through my experience in both business and public service."

In addition to their general responsibilities on the board, Kelley and Miller will each serve on the Audit Committee. Darrel Anderson, chair of the board, stated, "We're pleased to welcome Chuck and Tammy to the MDU Resources board. We expect Chuck's extensive pipeline experience will be a strong asset to our natural gas transmission business, and Tammy's leadership in both business and government will bring valuable insight as we continue to grow and serve our communities. We look forward to the contributions they will make to our board and our company."

About MDU Resources Group, Inc.
MDU Resources Group Inc., a member of the S&P SmallCap 600 index, strives to deliver safe, reliable, affordable, and environmentally responsible electric utility and natural gas distribution services to more than 1.2 million customers across the Pacific Northwest and Midwest. In addition to its utility operations, the company's pipeline business operates a more than 3,800-mile natural gas pipeline network and storage system, ensuring reliable energy delivery across the Northern Plains. With a legacy spanning over a century, MDU Resources remains focused on energizing lives for a better tomorrow.

[1] https://finance.yahoo.com/news/mdu-resources-announces-appointments-board-203000845.html
[2] https://www.prnewswire.com/news-releases/mdu-resources-announces-appointments-to-the-board-of-directors-302529088.html