X0508 4 2026-02-17 0000067716 MDU RESOURCES GROUP INC MDU 0002006446 Senger Garret 1200 WEST CENTURY AVENUE BISMARCK ND 58503 1 Chief Utilities Officer 0 Common Stock 2026-02-17 4 A 0 6920.0000 0.0000 A 108215.0000 D Common Stock 2026-02-18 4 F 0 8167.0000 20.3600 D 100048.0000 D Common Stock - 401(k) 25139.2937 I By Trustee Represents restricted stock units (RSUs) that will vest on December 31, 2028, subject to the reporting person's continued employment through the vesting date. Including 12,169 net shares, which vested on December 31, 2025. Shares withheld in payment of tax liability in connection with the vesting of a previously reported award of RSUs, which vested December 31, 2025. Price is equal to the closing price of a share of Common Stock on February 18, 2026. Anthony D. Foti, Attorney-in-Fact for Garret Senger 2026-02-19