MDU Resources Group, Inc. filed a Current Report on Form 8-K with the SEC on August 6, 2026, announcing the availability of its second quarter 2026 financial results via a news release and investor presentation.

Key Highlights

  • Reporting period: The disclosure covers MDU Resources Group's financial results for the second quarter of 2026.
  • News release furnished: A news release dated August 6, 2026, is attached as Exhibit 99 and incorporated by reference into the filing.
  • Conference call: The company disclosed it is webcasting a conference call on August 6, 2026, to discuss its second quarter 2026 financial results and provide a business update.
  • Investor presentation: An investor presentation concerning the second quarter 2026 results was made available under the "Investor Relations" section at investor.mdu.com.
  • Signatory: The report was signed by Jason L. Vollmer, Chief Financial Officer, on August 6, 2026.

MDU Resources Group Files Q2 2026 Results Announcement

MDU Resources Group, Inc. (New York Stock Exchange: MDU), a Delaware corporation headquartered at 1200 West Century Avenue, Bismarck, North Dakota, filed a Current Report on August 6, 2026, under Item 2.02 (Results of Operations and Financial Condition) and Item 7.01 (Regulation FD Disclosure). According to the filing, the company issued a news release on August 6, 2026, announcing its second quarter 2026 financial results, a copy of which is furnished as Exhibit 99 to the report.

The filing noted that in conjunction with the news release, the company also made available an investor presentation concerning its second quarter 2026 financial results, accessible under the "Investor Relations" section of its corporate website at investor.mdu.com. The filing states that information on the company's corporate website "is not, and will not be deemed to be, a part of this Current Report on Form 8-K or incorporated into any other filings the Company may make with the U.S. Securities and Exchange Commission."

As disclosed in the filing, the information contained in Items 2.02 and 7.01, including Exhibit 99, shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, and shall not be deemed incorporated by reference into any filing under the Securities Act of 1933 or the Exchange Act, except as expressly set forth by specific reference in such a filing. The report was duly signed by Chief Financial Officer Jason L. Vollmer.

What Was Disclosed

MDU Resources Group reported the furnishing of its second quarter 2026 financial results through a news release (Exhibit 99) and a supplemental investor presentation posted to its website, accompanied by a webcast conference call, all on August 6, 2026.