Columbia Banking System Announces $0.36 Per Common Share Dividend PR Newswire TACOMA, Wash., Nov. 13, 2023 TACOMA, Wash. , Nov. 13, 2023 /PRNewswire/ -- Columbia Banking System, Inc. (" Columbia " Nasdaq: COLB), parent company of Umpqua Bank, today announced its Board of Directors has approved a quarterly cash dividend in the amount of $0.36 per common share, payable December 11, 2023 , to shareholders of record as of November 24, 2023 . About Columbia Columbia (Nasdaq: COLB) is headquartered in...