Form 3 - Initial statement of beneficial ownership of securities:
SEC Accession No. 0000887343-25-000247
Filing Date
2025-09-03
Accepted
2025-09-03 19:49:57
Documents
3
Period of Report
2025-08-31

Document Format Files

Seq Description Document Type Size
1 FORM 3 wk-form3_1756943393.html 3  
1 FORM 3 wk-form3_1756943393.xml 3 1633
2 EX-24 a2025-08x20powerofattorn.htm EX-24 4303
3 GRAPHIC a2025-08x20powerofattorn001.jpg GRAPHIC 271453
  Complete submission text file 0000887343-25-000247.txt   381437
Mailing Address 1301 A STREET TACOMA WA 98402
Business Address 1301 A STREET TACOMA WA 98402 2533051900
COLUMBIA BANKING SYSTEM, INC. (Issuer) CIK: 0000887343 (see all company filings)

EIN.: 911422237 | State of Incorp.: WA | Fiscal Year End: 1231
SIC: 6022 State Commercial Banks
(CF Office: 02 Finance)

Mailing Address C/O COLUMBIA BANKING SYSTEM, INC. 1301 A STREET TACOMA WA 98402
Business Address
STUDENMUND JAYNIE M (Reporting) CIK: 0001222385 (see all company filings)

Type: 3 | Act: 34 | File No.: 000-20288 | Film No.: 251291554