Mdu Resources Group INC 8-K Filing

Ticker: MDU · Form: 8-K · Filed: Dec 12, 2025 · CIK: 67716

Sentiment: neutral

Filing Stats: 923 words · 4 min read · ~3 pages · Grade level 11.4 · Accepted 2025-12-12 16:32:56

Key Financial Figures

Filing Documents

01

Item 1.01. Entry into a Material Definitive Agreement. On December 11, 2025, MDU Resources Group, Inc. (the "Company") entered into an Amended and Restated Credit Agreement (the "Credit Agreement") with U.S. Bank National Association, as administrative agent ("U.S. Bank"), and the several lenders party thereto, as lenders (collectively, the "Lending Parties"), to amend and restate that certain Five-Year Revolving Credit Agreement (the "Previous Credit Agreement"), dated May 31, 2023, among the Company, U.S. Bank, as administrative agent, and the several lenders party thereto, as lenders, for the purpose of extending the maturity date of the revolving commitments thereunder from May 31, 2028 to December 11, 2030. The Credit Agreement, like the Previous Credit Agreement, provides for an initial commitment amount of $200 million and includes a $25 million standby letter of credit facility and a $25 million swingline subfacility. As with the Previous Credit Agreement, at the Company's request and subject to certain conditions, the Credit Agreement commitment amount may be increased by up to $50 million and the Company may make two requests to extend the maturity date, each for a one-year extension. The Credit Agreement contains customary events of default and affirmative and negative covenants, including a financial covenant (as in the Previous Credit Agreement) not to permit, as of the end of any fiscal quarter, the ratio of funded debt to total capitalization (determined on a consolidated basis) to be greater than 65%. The Credit Agreement has a variable interest rate and a facility fee that fluctuate depending on the senior unsecured debt rating of the Company. The facility fee is currently 0.175% of the commitment amount. As of December 11, 2025, there were $33,850,000 million of loans outstanding and $1 million of letters of credit issued under the Credit Agreement. Certain of the Lending Parties and their respective affiliates have acted and are acting as l

03

Item 2.03. Creation of Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant The disclosure set forth above under Item 1.01 of this Current Report on Form 8-K is hereby incorporated by reference into this Item 2.03.

01. Financial Statements and Exhibits

Item 9.01. Financial Statements and Exhibits. (d) Exhibits. Exhibit No. Description 10.1 Amended and Restated Credit Agreement, dated as of December 11, 2025, by and among MDU Resources Group, Inc., U.S. Bank National Association, as administrative agent, and the several lenders party thereto, as lenders. 104 Cover Page Interactive Data File (embedded within the Inline XBRL document). Certain schedules and exhibits have been omitted pursuant to Item 601(a)(5) of Regulation S-K. The Company hereby undertakes to supplementally furnish copies of any omitted schedules and exhibits to the SEC upon request; provided that the Company may request confidential treatment pursuant to Rule 24b-2 of the Exchange Act. 2 SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. Date: December 12, 2025 MDU Resources Group, Inc. By: /s/ Anthony D. Foti Name: Anthony D. Foti Title: Chief Legal Officer and Corporate Secretary 3

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