CB to Present at Boston Bank Conference


February 23, 2011


Contact:  Jo Anne Coy; Vice President:  Corporate Communications,
 Investor & Community Relations


Columbia Banking System to Present at the Keefe, Bruyette & Woods Boston Bank Conference on March 1, 2011


TACOMA, Washington--- Columbia Banking System, Inc. (NASDAQ: COLB) announced today that Melanie J. Dressel, President and Chief Executive Officer, is scheduled to present at the Keefe, Bruyette & Woods (“KBW”) Bank Conference in Boston, Massachusetts  March 1-2 2011.

The Columbia Banking System presentation is scheduled for Tuesday, March 1, 2011, at 8:00 a.m. EST (5:00 a.m. PST).  The webcast of the presentation can be accessed through the KBW presentation link at http://www.kbw.com/news/conferenceBostonBank2011_Webcast.html or by visiting www.columbiabank.com and clicking on the KBW Conference link.


About Columbia       

Headquartered in Tacoma, Washington, Columbia Banking System, Inc. is the holding company of Columbia Bank, a Washington state-chartered full-service commercial bank which was awarded third place in the large employer category by Seattle Business Magazine’s 100 Best Companies to Work For 2010 and was designated one of  Puget Sound Business Journal’s “Washington’s Best Workplaces 2010”. 

With the January, 2010 FDIC-assisted acquisitions of Columbia River Bank and American Marine Bank, Columbia Banking System has 85 banking offices, including 60 branches in Washington State and 25 branches in Oregon. Columbia Bank does business under the Bank of Astoria name at the Bank of Astoria’s former branches located in Astoria, Warrenton, Seaside, Cannon Beach, Manzanita and Tillamook. More information about Columbia can be found on its website at www.columbiabank.com.


Note Regarding Forward Looking Statements

This news release includes forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, which can be identified by words such as “may,” “expected,” “anticipate”, “continue,” or other comparable words.  In addition, all statements other than statements of historical facts that address activities that Columbia expects or anticipates will or may occur in the future are forward-looking statements.  Readers are encouraged to read the SEC reports of Columbia, particularly its form 10-K for the Fiscal Year ended December 31, 2009, for meaningful cautionary language discussing why actual results may vary materially from those anticipated by management.