0001193125-07-013837 8-K 3 20070125 2.02 8.01 9.01 20070126 20070126 COLUMBIA BANKING SYSTEM INC 0000887343 6022 911422237 WA 1231 8-K 34 000-20288 07555353 1102 BROADWAY PLAZA TACOMA WA 98402 2533051900 1102 BROADWAY PLAZA TACOMA WA 98402 8-K 1 d8k.htm FORM 8-K EX-99.1 2 dex991.htm PRESS RELEASE DATED JANUARY 25, 2007 EX-99.2 3 dex992.htm PRESS RELEASE DATED JANUARY 25, 2007