 BUTTE, Mont. and SIOUX FALLS, N.D., Jan. 12, 2021 GLOBE NEWSWIRE -- NorthWestern Corporation dba NorthWestern Energy Nasdaq: NWE today announced that it will host a webcast on Friday, February 12, 2021, at 3:30 p.m. Eastern time to review its financial results for the year ending December 31, 2020. The Company also plans to issue a news release detailing its financial results the evening of February 11, 2021, after the market close. 