As of November 6, 2026, Columbia Banking System, Inc. is a publicly traded company (Nasdaq: COLB); its largest reported holder is Vanguard, with 5.24% on Schedule 13G of April 29, 2026. The largest insider holding is Steven R. Gardner, a director, with 562,425 shares (0.20% of shares outstanding), per Form 4 of October 30, 2026 (Schedule 13G, April 29, 2026).
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Is Columbia Banking System, Inc. a real, registered company?
- Columbia Banking System, Inc. files with the SEC under CIK 887343 (its SEC filings).
- Its shares are listed under the ticker COLB on Nasdaq (SEC company record).
- Incorporated in Washington; business address in Tacoma, Washington, as its SEC filings state.
- Court and bankruptcy records: see Before you sign or pay below.
Before you sign or pay
- Court and bankruptcy: No federal court case or bankruptcy filing found under Columbia Banking System, Inc. in our court records and SEC 8-K records (as of 2026-11-06).
- Leadership changes: the latest reported is Simone Lagomarsino (Form 8-K filed 2026-07-30). Check you are dealing with the people now in charge.
- Ownership: 5%+ holders are reported on Schedule 13D or 13G; the latest names Vanguard (filed 2026-04-29).
Who are Columbia Banking System, Inc.'s owners and officers?
Columbia Banking System, Inc.: incorporated in Washington; business address in Tacoma, Washington; industry State Commercial Banks (Schedule 13G/A, 2026-08-13).
| Report | Holder | Share |
|---|---|---|
| Schedule 13G/A, 2026-08-13 | Wellington Management Group LLP | 4.1% |
| Schedule 13G, 2026-04-29 | Vanguard Capital Management | 5.24% |
| Schedule 13G/A, 2026-03-26 | The Vanguard Group | 0% |
| Schedule 13G, 2026-02-10 | Wellington Management Group LLP | 6.1% |
Questions about who owns Columbia Banking System, Inc.
Who owns Columbia Banking System, Inc.?
On this page, one holder's latest ownership filing reports 5% or more of Columbia Banking System, Inc.: Vanguard Capital Management (5.24%, Schedule 13G, filed 2026-04-29).
When did Vanguard Capital Management buy into Columbia Banking System, Inc.?
The filings give report dates, not purchase dates. The earliest filing from Vanguard Capital Management on this page is the Schedule 13G, filed 2026-04-29, reporting 5.24%.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 4 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
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What the Full Report on Columbia Banking System, Inc. covers
The Short Answer
Which Company This Is
What They Do, And How The Money Works
Who Runs It, And How To Reach Them
The Money: Funding, Valuation, Runway
Who Pays Them, And Who They Are Up Against
Warning Bells
Sources
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| Filed | Person | Role | Change | Effective |
|---|---|---|---|---|
| Form 8-K, 2026-07-30 | Simone Lagomarsino | appointed | 2026-09-01 |
Which insiders own Columbia Banking System, Inc. shares?
Directors, officers and holders of 10% or more report their shares on Forms 3, 4 and 5. Each line is the latest such report, largest holding first.
- , a director: 562,425 shares (0.20% of shares outstanding), 2,577 held directly and 559,848 indirectly (Form 4, 2026-10-30).
- , the chairman and a director: 390,824 shares (0.14% of shares outstanding) (Form 4, 2025-03-04).
- , the chairman and chief executive: 151,584 shares (0.05% of shares outstanding) (Form 4, 2026-03-17).
- , the chief financial officer: 143,622 shares (0.05% of shares outstanding), 141,162 held directly and 2,460 indirectly (Form 4, 2025-03-04).
- , the senior executive vice president: 106,800 shares (0.04% of shares outstanding), 101,240 held directly and 5,560 indirectly (Form 4, 2026-03-17).
Shares outstanding: 276,317,436 as of 2026-10-31, from the company's latest SEC cover page.
How much has Columbia Banking System, Inc. raised?
No fundraising or offering filing from Columbia Banking System, Inc. is on file with us.
Keep reading
More on Columbia Banking System, Inc. and the records around it.
Columbia Banking System, Inc. elsewhere on the record
- Leadership changes Jul 2026
Companies that share a holder
- Wellington Management Group LLP also filed stake reports on 240 other companies: Hub Group, Inc. (Oct 2026), Latham Group, Inc. (Oct 2026), Redwood Trust, Inc. (Oct 2026)
- Vanguard Capital Management also filed stake reports on 1495 other companies: A10 Networks Inc (Oct 2026), Altisource Portfolio Solutions SA (Oct 2026), Alto Neuroscience Inc (Oct 2026)
- The Vanguard Group also filed stake reports on 2384 other companies: BellRing Brands, Inc. (Sep 2026), CAL-MAINE FOODS INC (Sep 2026), FTAI Aviation Ltd. (Sep 2026)
Related pages
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