TACOMA, Wash., April 10, 2013 /PRNewswire/ -- Columbia Banking System, Inc. (NASDAQ: COLB) expects to report first quarter 2013 financial results on Wednesday, April 24, 2013, just prior to the Company's Annual Meeting, which is scheduled for 1:00 p.m. PDT that day. Management will discuss these results on a conference call scheduled for the following day, Thursday, April 25, 2013 at 1:00 p.m. PDT ( 4:00 p.m. EDT). Interested parties may listen to this discussion by calling 1-866-378-3802; Conference ID code #34588953. A conference call replay will be available from approximately 4:00 p.m. PDT on April 25, 2013 through midnight PDT on May 1, 2013. The conference call replay can be accessed by dialing 1-855-859-2056 and entering Conference ID code #34588953. 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. For the sixth consecutive year, the bank was named in 2012 as one of Puget Sound Business Journal's " Washington's Best Workplaces." With the recent acquisition of West Coast Bancorp, 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: JoAnne Coy, Vice President,Corporate Communications253-305-1965; firstname.lastname@example.org SOURCE Columbia Banking System, Inc.