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MDU · Current Report (Form 8-K) · Filed May 13, 2026

Mdu Resources Group Inc — Current Report (Form 8-K)

Form
8-K
Filed
May 13, 2026
Period
May 11, 2026
Ticker
MDU
Accession
0000067716-26-000054
Boardroom Alpha · Filing insights

Stockholders approve amended LTIP increasing share pool and expanding director emeritus eligibility. Governance actions including policy update and major approvals also reported.

About Mdu Resources Group Inc
Market cap
$4.4B
1Y TSR
+36.6%
3Y TSR
+29.3%
Board grade
B
Sector
Industrials
CEO
Nicole A Kivisto
Last annual meeting: May 11, 2026 · View full Mdu Resources Group Inc profile →
mdu-20260511


UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT
Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): May 11, 2026

MDU Resources Group, Inc.
(Exact name of registrant as specified in its charter)

Delaware1-0348030-1133956
(State or other jurisdiction of(Commission File Number)(IRS Employer Identification No.)
incorporation)

1200 West Century Avenue
P.O. Box 5650
Bismarck, North Dakota
(Address of principal executive offices)
58506
(Zip Code)

Registrant’s telephone number, including area code: (701) 530-1000
N/A
(Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
 
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
 
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
 
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Securities Exchange Act of 1934:
Title of each classTrading Symbol(s)Name of each exchange on which registered
Common Stock, par value $1.00 per shareMDUNew York Stock Exchange
Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 or Rule 12b-2 of the Securities Exchange Act of 1934.
Emerging growth company
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.




Item 5.02.
Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.
At the annual stockholders’ meeting of MDU Resources Group, Inc. (the “Company”) held on May 11, 2026 (the “Annual Meeting”), the Company’s stockholders approved the MDU Resources Group, Inc. Long-Term Performance-Based Incentive Plan, as amended and restated (the “LTIP”). The material changes to the LTIP were as follows: (1) increased the number of shares of the Company’s common stock available for issuance under the LTIP by 6,564,000 shares, for a total of 15,806,806 shares available for issuance; and (2) expanded eligibility for a director emeritus to participate in the LTIP. The LTIP became effective immediately upon stockholder approval at the Annual Meeting. Each of Nicole A. Kivisto, President and Chief Executive Officer; Jason L. Vollmer, Chief Financial Officer; Garret Senger, Chief Utilities Officer; Anthony D. Foti, Chief Legal Officer and Corporate Secretary; and Rob L. Johnson, President, WBI Energy, Inc., collectively referred to as the Company’s named executive officers (the “NEOs”), as well as other officers of the Company, participate in the LTIP. A summary of the material terms of the LTIP is set forth in the Company’s definitive proxy statement for the Annual Meeting filed with the U.S. Securities and Exchange Commission on April 1, 2026 (the “Proxy Statement”). The summaries of the LTIP set forth above, and in the Proxy Statement, are qualified in their entirety by reference to the full text of the LTIP, a copy of which is filed as Exhibit 10.1 to this Current Report on Form 8-K, and incorporated herein by reference.

Item 5.05.
Amendments to the Registrant’s Code of Ethics, or Waiver of a Provision of the Code of Ethics.
On May 13, 2026, the Company’s Board of Directors (the “Board”) adopted an updated and revised code of business conduct, referred to as the “Leading With Integrity Policy” (the “Policy”), as part of the Company’s periodic review process. This Policy applies to all non-employee directors, director emeriti, officers, and employees of the Company and its subsidiaries. The updates and revisions to the Policy, among other things: (i) clarify and revise provisions relating to artificial intelligence, confidential information, conflicts of interest, physical security, and regulatory compliance, and (ii) make other non-substantive administrative and stylistic changes. The summary description of these updates and revisions to the Policy set forth above is qualified in its entirety by reference to the full text of the Policy, as amended, which can be found on the Company’s corporate website at investor.mdu.com/governance/governance-documents/. The contents on the Company’s corporate website are not incorporated by reference in this report.

Item 5.07.
Submission of Matters to a Vote of Security Holders.
On May 11, 2026, the Company held the Annual Meeting in a virtual-only format and stockholders voted on the four proposals set forth below. The final voting results are listed below.

Proposal 1: Election of Directors. Stockholders elected the eight nominees to the Board for one-year terms expiring at the annual stockholders’ meeting to be held in 2027, based upon the votes set forth in the table below:

Name
Votes For
Votes Against
Abstentions
Broker Non-Votes
Darrel T. Anderson
156,497,374 1,772,995 207,111 25,924,878 
Vernon A. Dosch
157,748,991 508,798 219,691 25,924,878 
Marian M. Durkin
156,077,464 1,507,033 892,983 25,924,878 
Douglas W. Jaeger
157,108,513 1,149,629 219,338 25,924,878 
Charles M. Kelley157,868,483 382,487 226,510 25,924,878 
Nicole A. Kivisto
157,782,494 498,930 196,056 25,924,878 
Tammy J. Miller157,313,621 952,917 210,942 25,924,878 
Priti R. Patel
157,647,380 608,760 221,340 25,924,878 

2



Proposal 2: Advisory Vote to Approve Executive Compensation. Stockholders approved, on an advisory basis, the compensation of the NEOs, based upon the votes set forth in the table below:

Votes For
Votes Against
Abstentions
Broker Non-Votes
155,483,5832,448,238 545,659 25,924,878 

Proposal 3: Approval of LTIP. Stockholders approved the LTIP, based upon the votes set forth in the table below:

Votes ForVotes AgainstAbstentionsBroker Non-Votes
154,587,0512,817,302 1,073,127 25,924,878 

Proposal 4: Ratification of Appointment of Independent Registered Public Accounting Firm. Stockholders ratified the appointment of Deloitte & Touche LLP as the Company’s independent registered public accounting firm for fiscal year 2026, based upon the votes set forth in the table below:

Votes ForVotes AgainstAbstentions
173,965,50710,089,093 347,758 

Item 9.01.Financial Statements and Exhibits.








3



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: May 13, 2026
MDU Resources Group, Inc.
By:/s/ Anthony D. Foti
Name:Anthony D. Foti
Title:Chief Legal Officer and Corporate Secretary

4
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Reference

Frequently asked questions

When did Mdu Resources Group Inc file this 8-K?
Mdu Resources Group Inc (MDU) filed this Current Report (Form 8-K) with the SEC on May 13, 2026. The accession number assigned by EDGAR is 0000067716-26-000054.
What does an 8-K disclose?
Form 8-K is the SEC's current-report form, used to disclose material events between periodic reports (10-K / 10-Q). Triggers include CEO/CFO departures, acquisitions, bankruptcies, earnings releases, auditor changes, changes in fiscal year, and amendments to corporate governance. Each 8-K is keyed to one or more Item numbers (1.01 through 9.01).
What is the key takeaway from this filing?
Stockholders approve amended LTIP increasing share pool and expanding director emeritus eligibility. Governance actions including policy update and major approvals also reported. This is Boardroom Alpha's one-line summary of the current report; see the full filing text above for the formal disclosure.
What Item codes does an 8-K cover?
An 8-K's Item codes (1.01 through 9.01) specify what kind of event is being disclosed — e.g. Item 1.01 for entering a material agreement, Item 5.02 for departure/election of directors and executive officers, Item 8.01 for other events. The Item codes for this 8-K appear in the filing text above.
Where can I find Mdu Resources Group Inc's prior current reports on EDGAR?
The SEC EDGAR browser lists every 8-K Mdu Resources Group Inc has filed under CIK 67716, sortable by date. Use the "View on SEC EDGAR" link in the page header, or browse directly via https://www.sec.gov/cgi-bin/browse-edgar.
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