# Filing Detail

Form DEF 14A - Other definitive proxy statements:
SEC Accession No. 0001140361-18-018485
Filing Date
2018-04-13
Accepted
2018-04-13 13:10:56
Documents
26
Period of Report
2018-05-23
Effectiveness Date
2018-04-13

Document Format Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
1 | DEF 14A | formdef14a.htm | DEF 14A | 1388400
2 |  | image0.jpg | GRAPHIC | 15115
3 |  | image1.jpg | GRAPHIC | 8160
4 |  | image2.jpg | GRAPHIC | 7942
5 |  | image3.jpg | GRAPHIC | 10603
6 |  | image11.jpg | GRAPHIC | 13265
7 |  | image12.jpg | GRAPHIC | 12921
8 |  | image13.jpg | GRAPHIC | 14232
9 |  | image14.jpg | GRAPHIC | 13908
10 |  | image15.jpg | GRAPHIC | 12324
11 |  | image16.jpg | GRAPHIC | 12342
12 |  | image17.jpg | GRAPHIC | 13231
13 |  | image18.jpg | GRAPHIC | 13299
14 |  | image19.jpg | GRAPHIC | 11470
15 |  | image20.jpg | GRAPHIC | 11182
16 |  | image21.jpg | GRAPHIC | 12406
17 |  | image22.jpg | GRAPHIC | 9363
18 |  | image23.jpg | GRAPHIC | 12068
19 |  | image24.jpg | GRAPHIC | 12857
20 |  | image25.jpg | GRAPHIC | 26664
21 |  | image00030.jpg | GRAPHIC | 67436
22 |  | image00031.jpg | GRAPHIC | 99868
23 |  | image00033.jpg | GRAPHIC | 53235
24 |  | image00036.jpg | GRAPHIC | 50701
25 |  | image00037.jpg | GRAPHIC | 97078
26 |  | image00038.jpg | GRAPHIC | 37446
| Complete submission text file | 0001140361-18-018485.txt |  | 2286092

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: DEF 14A | Act: 34 | File No.: 000-20288 | Film No.: 18753809
SIC: 6022 State Commercial Banks