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Employer with a benefit plan

COLUMBIA BANKING SYSTEM, INC.

The Employer Identification Number (EIN) for COLUMBIA BANKING SYSTEM, INC. is 91-1422237.

At a glance

EIN
91-1422237 · 911422237
Legal name
COLUMBIA BANKING SYSTEM, INC.
Address on file
1301 A STREET, TACOMA, WA 98402
Records show
SEC filer; employer with a benefit plan
Latest record
2026-09-04

SEC records

SEC EDGAR company filings · records as of 2026-09-04

SEC CIK
0000887343
Source: SEC · as of 2026-09-04
Industry (SIC)
State Commercial Banks (6022)
Source: SEC · as of 2026-09-04
State of incorporation
WA
Source: SEC · as of 2026-09-04
Ticker
COLB
Source: SEC · as of 2026-09-04
Latest SEC filing
4 2026-09-04
Source: SEC · as of 2026-09-04

Benefit plans

DOL Form 5500 filings (EFAST2) · records as of 2025-08-04

Benefit plan 1, 2024 filing
UMPQUA BANK 401(K) AND PROFIT SHARING PLAN
Source: DOL 5500 · as of 2025-08-04
Participants (start of year)
7,858
Source: DOL 5500 · as of 2025-08-04
Plan features
ERISA 404(c) plan; Participant-directed; Profit-sharing; 401(k) feature; 401(m) matching; Automatic enrollment
Source: DOL 5500 · as of 2025-08-04
Plan type
Single-employer plan
Source: DOL 5500 · as of 2025-08-04
Business code (NAICS)
522120
Source: DOL 5500 · as of 2025-08-04
Benefit plan 1, 2023 filing
UMPQUA BANK 401(K) AND PROFIT SHARING PLAN
Source: DOL 5500 · as of 2024-07-09
Participants (start of year)
5,572
Source: DOL 5500 · as of 2024-07-09
Plan features
ERISA 404(c) plan; Participant-directed; Profit-sharing; 401(k) feature; 401(m) matching; Automatic enrollment
Source: DOL 5500 · as of 2024-07-09
Plan type
Single-employer plan
Source: DOL 5500 · as of 2024-07-09

What this record is

Public filings that carry this EIN (DOL Form 5500 filings (EFAST2) and SEC EDGAR company filings), shown as filed. Nothing is scraped from the IRS, and a public-record match is not IRS TIN validation.

What it is not

Registry status, formation date, and registered agent come from the Washington Secretary of State, Corporations and Charities Division; see the Washington business entity search.

If something is wrong

A name, address, or classification here is what the source published. To correct the source, file with it; to have this page removed, see corrections and removal.

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