# Filing Detail

Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
SEC Accession No. 0001140361-23-017024
Filing Date
2023-04-06
Accepted
2023-04-06 16:12:10
Documents
3

Document Format Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
1 | FORM DEFA14A | ny20006886x2_defa14a.htm | DEFA14A | 17704
2 |  | ny20006886x2_nc1.jpg | GRAPHIC | 365451
3 |  | ny20006886x2_nc2.jpg | GRAPHIC | 576490
| Complete submission text file | 0001140361-23-017024.txt |  | 1315938

Mailing Address 1301 A STREET TACOMA WA 98402
Business Address 1301 A STREET TACOMA WA 98402 2533051900
COLUMBIA BANKING SYSTEM, INC. (Filer) CIK: 0000887343 (see all company filings)

EIN.: 911422237 | State of Incorp.: WA | Fiscal Year End: 1231
Type: DEFA14A | Act: 34 | File No.: 000-20288 | Film No.: 23806293
SIC: 6022 State Commercial Banks