BISMARCK, N.D., Aug. 7, 2025 /PRNewswire/ -- MDU Resources Group, Inc. (NYSE: MDU) today announced second quarter financial results for 2025, with sustained momentum in the pipeline segment and regulatory progress supporting the company's long-term value proposition as a pure-play regulated energy delivery business. "We continued our solid start to 2025, despite weather and operating cost challenges that impacted the second quarter results," said Nicole A. Kivisto, president and CEO of MDU Resources. "We co ...