NorthWestern Reports First Quarter 2021 Financial Results Company reports GAAP diluted earnings per share of $1.24 for the quarter, affirms 2021 earnings guidance and announces a $0.62 per share quarterly dividend payable June 30, 2021 BUTTE, Mont. and SIOUX FALLS, S.D., April 21, 2021 (GLOBE NEWSWIRE) — NorthWestern Corporation d/b/a NorthWestern Energy (Nasdaq: NWE) reported financial results for the three months ended March 31, 2021. Net income for the period was $63.1 million, or $1.24 per diluted share, as compared with net income of $50.7 million, or $1.00 per diluted share, for the same period in 2020. This increase was primarily due to improved gross margin from colder winter weather and lower operating costs, partly offset by higher Montana electric supply costs and depreciation expense, and lower income tax benefit.