MDU Resources Group, Inc. announced its financial results for the fourth quarter of 2025, with a net income of $76.3 million and diluted earnings per share of $0.37. The company's electric utility segment saw an increase in net income, primarily driven by higher retail sales revenue, while the natural gas distribution segment also reported increased net income due to rate relief. The pipeline segment experienced a decrease in net income, largely due to the absence of certain benefits from the prior year and higher operating expenses.