BUTTE, Mont. & SIOUX FALLS, S.D.–(BUSINESS WIRE)–NorthWestern Energy Group, Inc. d/b/a NorthWestern Energy (Nasdaq: NWE) today announced that it will host an investor webinar on Thursday, November 5, 2026, at 11:00 a.m. Eastern to review its financial results for the quarter ending September 30, 2026. The Company also plans to issue a news release detailing its financial results the evening of Wednesday, November 4, 2026. To register for the webinar, please visit https://northwesternenergy.co