MDU Resources Prices Public Offering of 10,152,284 Shares of Common Stock with a Forward Component

BISMARCK, N.D., Dec. 4, 2025 /PRNewswire/ -- MDU Resources Group, Inc. (NYSE: MDU) announced today that it has priced an underwritten public offering of 10,152,284 shares of its common stock at a public offering price of $19.70 per share. Subject to certain conditions, all shares are expected to be borrowed by the forward sellers, Wells Fargo Securities, BofA Securities, and J.P. Morgan (or their respective affiliates), from third parties and sold to the underwriters in the offering in connection with the forward sale agreements described below. In conjunction with the offering, MDU Resources has granted the underwriters an option to purchase up to 1,522,842 additional shares of its common stock. If such option is exercised, MDU Resources may, in its sole discretion, enter into additional forward sale agreements with the forward purchasers (or their respective affiliates) with respect to such additional shares.