MDU Resources Group Inc. has entered into an Amended and Restated Credit Agreement with U.S. Bank National Association, as administrative agent, and a group of lenders. The new agreement amends and restates the company's previous five-year revolving credit agreement, extending the maturity date from May 31, 2028, to December 11, 2030. The facility maintains an initial commitment amount of $200 million, which includes a $25 million standby letter of credit facility and a $25 million swingline subfacility. The agreement also allows for an increase in the commitment amount by up to $50 million and permits the company to request two one-year extensions of the maturity date, subject to certain conditions. As of December 11, 2025, MDU Resources had $33.85 million in loans outstanding and $1 million in letters of credit issued under the facility. The interest rate and facility fee under the agreement fluctuate based on the company's senior unsecured debt rating.