NorthWestern Corporation’s Establishment of At-the-Market Program to Sell Up to $100,000,000 of Common Stock

Hunton & Williams LLP advised sales agents in connection with NorthWestern Corporation’s establishment of its at-the-market program to sell up to an aggregate of $100,000,000 of its common stock over a period of time and from time to time through either of the sales agents.

NorthWestern Corporation, doing business as NorthWestern Energy, provides electricity and natural gas to approximately 709,600 customers in Montana, South Dakota and Nebraska. We have generated and distributed electricity in South Dakota and distributed natural gas in South Dakota and Nebraska since 1923, and have generated and distributed electricity and distributed natural gas in Montana since 2002.

The Hunton & Williams team included Peter O’Brien, Christina Kwon and Andrew Spector.