MDU Resources (MDU) - 2023 Q3 - Quarterly Report

For the transition period from _____________ to ______________ Commission file number 1-03480 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 MDU RESOURCES GROUP INC (Exact name of registrant as specified in its charter) FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Securities registered p ...