0001193125-04-117524 S-4 13 20040713 COLUMBIA BANKING SYSTEM INC 0000887343 6022 911422237 WA 1231 S-4 33 333-117345 04912577 1102 BROADWAY PLAZA TACOMA WA 98402 2533051900 1102 BROADWAY PLAZA TACOMA WA 98402 S-4 1 ds4.htm FORM S-4 EX-3.1 2 dex31.htm ARTICLES OF INCORPORATION OF REGISTRANT EX-5 3 dex5.htm OPINION OF GRAHAM & DUNN PC REGARDING LEGALITY OF SECURITIES EX-8 4 dex8.htm OPINION OF GRAHAM & DUNN PC REGARDING FEDERAL INCOME TAX MATTERS EX-10.1 5 dex101.htm VOTING AGREEMENT OF BANK OF ASTORIA DIRECTORS AND EXECUTIVE OFFICERS EX-10.2 6 dex102.htm FORM OF DIRECTOR NON-COMPETITION AGREEMENT EX-23.3 7 dex233.htm CONSENT OF DELOITTE & TOUCHE, LLP EX-23.4 8 dex234.htm CONSENT OF SYMONDS, EVANS & COMPANY, P.C. EX-23.5 9 dex235.htm CONSENT OF MCGLADREY & PULLEN, LLP. EX-23.6 10 dex236.htm CONSENT OF SANDLER O'NEILL & PARTNERS, L.P. EX-99.1 11 dex991.htm FORM OF PROXY TO BE MAILED TO SHAREHOLDERS OF BANK OF ASTORIA EX-99.2 12 dex992.htm ELECTION FORM TO BE MAILED TO SHAREHOLDERS OF BANK OF ASTORIA GRAPHIC 13 g91201g60c93.jpg GRAPHIC