Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
SEC Accession No. 0000887343-25-000154
Filing Date
2025-04-03
Accepted
2025-04-03 16:35:40
Documents
4

Document Format Files

Seq Description Document Type Size
1 DEFA14A defa14a2025.htm DEFA14A 11406
2 GRAPHIC columbiabankingsysteminc_v.jpg GRAPHIC 519036
3 GRAPHIC columbiabankingsysteminc_va.jpg GRAPHIC 539118
4 GRAPHIC image_2.jpg GRAPHIC 2326
  Complete submission text file 0000887343-25-000154.txt   1472673
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.: 25810135
SIC: 6022 State Commercial Banks
(CF Office: 02 Finance)