<SEC-DOCUMENT>0000887343-20-000174-index.html : 20200528 <SEC-HEADER>0000887343-20-000174.hdr.sgml : 20200528 <ACCEPTANCE-DATETIME>20200528195521 ACCESSION NUMBER: 0000887343-20-000174 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20200527 FILED AS OF DATE: 20200528 DATE AS OF CHANGE: 20200528 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Lantow Michelle CENTRAL INDEX KEY: 0001480001 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 000-20288 FILM NUMBER: 20923528 MAIL ADDRESS: STREET 1: 720 SW WASHINGTON STREET, SUITE 550 CITY: PORTLAND STATE: OR ZIP: 97205 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: COLUMBIA BANKING SYSTEM, INC. CENTRAL INDEX KEY: 0000887343 STANDARD INDUSTRIAL CLASSIFICATION: STATE COMMERCIAL BANKS [6022] IRS NUMBER: 911422237 STATE OF INCORPORATION: WA FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 1301 A STREET CITY: TACOMA STATE: WA ZIP: 98402 BUSINESS PHONE: 2533051900 MAIL ADDRESS: STREET 1: 1301 A STREET CITY: TACOMA STATE: WA ZIP: 98402 FORMER COMPANY: FORMER CONFORMED NAME: COLUMBIA BANKING SYSTEM INC DATE OF NAME CHANGE: 19930328 </SEC-HEADER> <DOCUMENT> <TYPE>4 <SEQUENCE>1 <FILENAME>wf-form4_159071010456276.xml <DESCRIPTION>FORM 4 <TEXT> Document 1 - file: wf-form4_159071010456276.html
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