0000887343-20-000148.txt : 20200507 0000887343-20-000148.hdr.sgml : 20200507 20200507180720 ACCESSION NUMBER: 0000887343-20-000148 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20200506 FILED AS OF DATE: 20200507 DATE AS OF CHANGE: 20200507 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Deer Aaron James CENTRAL INDEX KEY: 0001810107 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 000-20288 FILM NUMBER: 20858026 MAIL ADDRESS: STREET 1: 1301 A STREET CITY: TACOMA STATE: WA ZIP: 98402 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 4 1 wf-form4_158888922278926.xml FORM 4 X0306 4 2020-05-06 0 0000887343 COLUMBIA BANKING SYSTEM, INC. COLB 0001810107 Deer Aaron James 1301 A STREET STE 800 TACOMA WA 98402 0 1 0 0 EVP Chief Financial Officer Common 2020-05-06 4 L 0 4000 22.9925 A 4000 D /s/ Cathleen Dent, attorney-in-fact 2020-05-07 EX-24 2 powerofattorneyformajdeer4.htm POA AJ DEER

POWER OF ATTORNEY / CONFORMING STATEMENT



    This Statement confirms that the undersigned, has authorized and designated Kumi Baruffi, Cathleen Dent, Gabrielle Pierce, Karina Busch and Laura Moravec each with the full power to act alone, to execute and file on the undersigned's behalf, all Form's 3, 4 and 5 (including any amendments thereto) that the undersigned may be required to file with the U. S. Securities and Exchange Commission as a result of the undersigned's ownership of or transactions in securities of Columbia Banking System, Inc.  The authority of Kumi Baruffi, Cathleen Dent, Gabrielle Pierce, Karina Busch and Laura Moravec under this Statement shall continue until the undersigned is no longer required to file Forms 3, 4 and 5 with regard to his/her ownership of or transactions in securities of Columbia Banking System, Inc., unless earlier revoked in writing.  The undersigned acknowledges that none of Columbia Banking System, Inc., Kumi Baruffi, Cathleen Dent, Gabrielle Pierce, Karina Busch or Laura Moravec is assuming any of the undersigned's responsibilities to comply with Section 16 of the Securities and Exchange Act of 1934.

The Power of Attorney shall remain in full force and effect until the undersigned is no longer subject to the reporting requirements of the Securities Exchange Act of 1934 and the rules thereunder, unless earlier revoked by the undersigned in a signed writing delivered to the attorney-in-fact.

IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed as of APRIL 14, 2020.

                        Signature: Aaron James Deer
                        Name: Aaron James Deer