Columbia Banking System Inc. announced that a quarterly cash dividend of $0.08 per common share will be paid on February 22, 2012 to shareholders of record as of the close of business on February 8, 2012. The company also announced that in addition to regular cash dividend, the board of directors also declared a special cash dividend of $0.29 per common share, which will also be paid on February 22, 2012 to shareholders of record as of the close of business on February 8, 2012.