0001193125-07-227021 8-K 2 20071024 5.03 9.01 20071026 20071026 COLUMBIA BANKING SYSTEM INC 0000887343 6022 911422237 WA 1231 8-K 34 000-20288 071193878 1102 BROADWAY PLAZA TACOMA WA 98402 2533051900 1102 BROADWAY PLAZA TACOMA WA 98402 8-K 1 d8k.htm FORM 8-K EX-3.1 2 dex31.htm ARTICLE 5, SECTION 5.2 OF THE COMPANY'S BYLAWS, AS AMENDED.