| Wed, Nov 11, 2009 | | | COLUMBIA BANKING SYSTEM INC Financials EDGAR Online Financials (Wed, Nov 11)
| | Fri, Nov 6, 2009 | | | COLUMBIA BANKING SYSTEM INC Files SEC form 10-Q, Quarterly Report EDGAR Online (Fri, Nov 6)
| | Thu, Oct 29, 2009 | | | Columbia Bank narrows Q3 loss at bizjournals.com (Thu, Oct 29)
| | | COLUMBIA BANKING SYSTEM INC Files SEC form 8-K, Other Events, Financial Statements and Exhibits EDGAR Online (Thu, Oct 29)
| | | Columbia Banking System Announces Third Quarter 2009 Results and Declares Cash Dividend PR Newswire (Thu, Oct 29)
| | | Q3 2009 Columbia Banking System Earnings Release - 09:15 am ET CCBN (Thu, Oct 29)
| | Tue, Oct 20, 2009 | | | Bull Tools: 3 Names to Keep You on Top of the Game TradingMarkets.com (Tue, Oct 20)
| | Fri, Oct 16, 2009 | | | Weekend Investor: Regional lenders bank on failure at MarketWatch (Fri, Oct 16)
| | Tue, Oct 6, 2009 | | | Columbia Banking System Announces Third Quarter 2009 Earnings Release Date and Conference Call PR Newswire (Tue, Oct 6)
| | Fri, Sep 18, 2009 | | | Fishing's Bad, Stay Home at Forbes.com (Fri, Sep 18)
| | Mon, Aug 31, 2009 | | | COLUMBIA BANKING SYSTEM INC Files SEC form 8-K/A, Results of Operations and Financial Condition, Financial Statements EDGAR Online (Mon, Aug 31)
| | Wed, Aug 12, 2009 | | | COLUMBIA BANKING SYSTEM INC Files SEC form 8-K, Regulation FD Disclosure, Financial Statements and Exhibits EDGAR Online (Wed, Aug 12)
| | Thu, Aug 6, 2009 | | | COLUMBIA BANKING SYSTEM INC Files SEC form 8-K, Entry into a Material Definitive Agreement, Regulation FD Disclosure, EDGAR Online (Thu, Aug 6)
| | Wed, Aug 5, 2009 | | | COLUMBIA BANKING SYSTEM INC Files SEC form 8-K, Other Events EDGAR Online (Wed, Aug 5)
| | Mon, Aug 3, 2009 | | | COLUMBIA BANKING SYSTEM INC Files SEC form 8-K, Other Events, Financial Statements and Exhibits EDGAR Online (Mon, Aug 3)
| | Fri, Jul 31, 2009 | | | COLUMBIA BANKING SYSTEM INC Files SEC form 10-Q, Quarterly Report EDGAR Online (Fri, Jul 31)
| | Thu, Jul 23, 2009 | | | COLUMBIA BANKING SYSTEM INC Files SEC form 8-K, Other Events, Financial Statements and Exhibits EDGAR Online (Thu, Jul 23)
| | Mon, Jun 29, 2009 | | | COLUMBIA BANKING SYSTEM INC Files SEC form 8-K, Other Events, Amendments to Articles of Inc. or Bylaws; Change in Fis EDGAR Online (Mon, Jun 29)
| | Mon, Jun 15, 2009 | | | COLUMBIA BANKING SYSTEM INC Files SEC form 8-K, Results of Operations and Financial Condition, Financial Statements a EDGAR Online (Mon, Jun 15)
| | Tue, Jun 2, 2009 | | | COLUMBIA BANKING SYSTEM INC Files SEC form 8-K, Change in Directors or Principal Officers, Financial Statements and E EDGAR Online (Tue, Jun 2)
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