TACOMA, Wash., Dec. 31, 2025 /PRNewswire/ -- Columbia Banking System, Inc. ("Columbia"Nasdaq: COLB), parent company of Columbia Bank, today announced it will release fourth quarter 2025 financial results on Thursday, January 22, 2026, after market close. The Company will host a conference call for investors and analysts at 2:00 p.m. PT (5:00 p.m. ET) that same day. During the call, management will discuss Columbia's fourth quarter 2025 financial results and provide an update on recent activities. There wil ...