TACOMA, Wash., April 26, 2013 /PRNewswire/ -- Columbia Banking System, Inc. (NASDAQ: COLB) announced today that Melanie J. Dressel, President and Chief Executive Officer, is scheduled to present at the D.A. Davidson & Co. 15 th Annual Financial Services Conference in Seattle, Washington. The Columbia Banking System presentation is scheduled for Thursday, May 9 at 8:00 a.m. Pacific time ( 11:00 a.m. Eastern). The webcast of the presentation can be accessed through a presentation link at http://www.wsw.com/webcast/dadco25/colb/ or by visiting www.columbiabank.com and clicking on the D.A. Davidson Conference link. The webcast will be archived for 90 days following the live presentation. About ColumbiaHeadquartered in Tacoma, Washington, Columbia Banking System, Inc. is the holding Company of Columbia State Bank, a Washington state-chartered full-service commercial bank. Columbia recently received a 2013 "Top Places to Work" award from the Business Examiner Media Group and was named for the sixth consecutive year as one of Puget Sound Business Journal's 2012 " Washington's Best Workplaces." Columbia Banking System has 157 banking offices, including 86 branches in Washington State and 71 branches in Oregon. Columbia State Bank does business under the Bank of Astoria name in Astoria, Warrenton, Seaside, Cannon Beach, Manzanita and Tillamook in Oregon. More information about Columbia can be found on its website at www.columbiabank.com. Note Regarding Forward Looking StatementsThis 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, 2012, for meaningful cautionary language discussing why actual results may vary materially from those anticipated by management. Contact: Jo Anne Coy; Vice President: Corporate Communications,Investor & Community Relations253-305-1965 SOURCE Columbia Banking System, Inc.