0001193125-07-163887 8-K 3 20070726 2.02 8.01 9.01 20070727 20070727 COLUMBIA BANKING SYSTEM INC 0000887343 6022 911422237 WA 1231 8-K 34 000-20288 071005545 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 JULY 26, 2007 ANNOUNCING SECOND QUARTER ENDED JUNE 30, 2007 EX-99.2 3 dex992.htm PRESS RELEASE DATED JULY 26, 2007 ANNOUNCING A QUARTERLY CASH DIVIDEND.