Press release content from Globe Newswire. The AP news staff was not involved in its creation. NorthWestern Reports 2020 Financial Results NorthWestern CorporationFebruary 11, 2021 GMT Company reports GAAP diluted earnings per share of $3.06 for 2020, affirms 2021 earnings guidance and announces a 3.3% increase to the quarterly dividend - to $0.62 per share - payable March 31, 2021 BUTTE, Mont. and SIOUX FALLS, S.D., Feb. 11, 2021 (GLOBE NEWSWIRE) -- NorthWestern Corporation d/b/a NorthWestern Energy (Nasdaq: NWE) reported financial results for the year ended December 31, 2020. Net income f...