NorthWestern Corporation 1,100,000 Shares of Common Stock Offering

Hunton & Williams LLP advised RBC Capital Markets, LLC and Robert W. Baird & Co. Incorporated as underwriters on an SEC-registered offering of 1,100,000 shares of common stock of NorthWestern Corporation (NWE).

NWE, doing business as NorthWestern Energy, provides electricity and natural gas to approximately 692,600 customers in Montana, South Dakota and Nebraska. NWE has generated and distributed electricity in South Dakota and distributed natural gas in South Dakota and Nebraska since 1923 and has generated and distributed electricity and distributed natural gas in Montana since 2002.

The Hunton & Williams LLP team included Pete O’Brien and Christina Kwon.