X0306 4 2021-06-07 0000067716 MDU RESOURCES GROUP INC MDU 0001188880 EVERIST THOMAS S 1200 WEST CENTURY AVENUE BISMARCK ND 58503 1 Common Stock 2021-06-07 4 S 0 75000.0000 33.7030 D 624322.0000 I By Corporation Common Stock 100899.0000 D Phantom Stock Common Stock 37644.2390 37644.2390 D The price reported in column 4 is the weighted average sale price. The shares were sold in multiple transactions at prices ranging from $33.580 to $33.850, inclusive. The reporting person undertakes to provide to MDU Resources Group, Inc., any shareholder of MDU Resources Group, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price. 1 for 1 Units are to be settled in cash after reporting person's retirement. /s/ Thomas Everist 2021-06-08