Columbia Banking System Announces Fourth Quarter & Year 2011 Earnings Release Date and Conference Call

Columbia Banking System, Inc. (NASDAQ: COLB) expects to report fourth quarter and full year 2011 financial results on Thursday, January 26, 2012 at 6:15 a.m. PST.   Management will discuss these results on a conference call scheduled for that afternoon at 1:00 p.m. PST (4:00 p.m. EST).     Interested parties may listen to this discussion by calling 1-866-378-3802; Conference ID code #43775618.     

A conference call replay will be available from approximately 4:00 p.m. PST on January 26, 2012 through midnight PST on February 2, 2012.  The conference call replay can be accessed by dialing 1-855-859-2056 and entering Conference ID code #43775618.