0001202458-07-000001 4 1 20070103 20070105 20070105 NELSON MARK W 0001202458 4 34 000-20288 07513972 1301 A STREET TACOMA WA 98402-4200 COLUMBIA BANKING SYSTEM INC 0000887343 6022 911422237 WA 1231 1102 BROADWAY PLAZA TACOMA WA 98402 2533051900 1102 BROADWAY PLAZA TACOMA WA 98402 4 1 edgar.xml PRIMARY DOCUMENT