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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): December 15, 2020


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

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

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

Registrant’s telephone number, including area code (701) 530-1000

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 class)(Trading 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.
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Item 5.02. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

On December 15, 2020, Mark Hellerstein, a member of the Board of Directors (the “Board”) of MDU Resources Group, Inc. (the “Company”) informed the Chair of the Board of his decision not to stand for reelection to the Board. Mr. Hellerstein’s term as a director will expire at the Company’s 2021 Annual Stockholder’s Meeting. Mr. Hellerstein’s decision not to stand for reelection is not the result of a disagreement with the Company on any matter relating to the Company’s operations, policies or practices.


Item 9.01. Financial Statements and Exhibits.
(d) Exhibits.

Exhibit No.Description
104Cover Page Interactive Data File (embedded within the Inline XBRL document)
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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 18, 2020

MDU Resources Group, Inc.
By:/s/ Daniel S. Kuntz
Daniel S. Kuntz
Vice President, General Counsel
and Secretary

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