COLUMBIA BANKING SYSTEM, INC. Subsidiaries
Every subsidiary the company listed in Exhibit 21 of its annual reports, newest list first (18 lists). Names and jurisdictions are as filed.
- 2026-02-26: Subsidiary Columbia Bank; Jurisdiction Columbia Trust Company, Columbia Healthcare Banking, Columbia Private Bank, Columbia Private Trust, Columbia Wealth Advisors, Columbia Wealth Management, Columbia Bank Home Lending, Columbia Bank Equipment Finance.
- 2026-02-26: Subsidiary Financial Pacific Reinsurance Co., Ltd.; Jurisdiction Turks & Caicos Islands.
- 2026-02-26: Subsidiary Umpqua Master Trust I; Jurisdiction Delaware.
- 2026-02-26: Subsidiary Umpqua Statutory Trust II; Jurisdiction Delaware.
| Annual report filed | Subsidiary | Jurisdiction |
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| 2026-02-26 | Columbia Bank | Columbia Trust Company, Columbia Healthcare Banking, Columbia Private Bank, Columbia Private Trust, Columbia Wealth Advisors, Columbia Wealth Management, Columbia Bank Home Lending, Columbia Bank Equipment Finance |
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| 2026-02-26 | Financial Pacific Reinsurance Co., Ltd. | Turks & Caicos Islands |
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| 2026-02-26 | Umpqua Master Trust I | Delaware |
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| 2026-02-26 | Umpqua Statutory Trust II | Delaware |
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| 2026-02-26 | Umpqua Statutory Trust III | Delaware |
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| 2026-02-26 | Umpqua Statutory Trust IV | Delaware |
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| 2026-02-26 | Umpqua Statutory Trust V | Connecticut |
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| 2026-02-26 | Humboldt Bancorp Statutory Trust II | Connecticut |
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| 2026-02-26 | Humboldt Bancorp Statutory Trust III | Connecticut |
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| 2026-02-26 | CIB Capital Trust | Delaware |
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| 2026-02-26 | Western Sierra Statutory Trust I | Connecticut |
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| 2026-02-26 | Western Sierra Statutory Trust II | Connecticut |
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| 2026-02-26 | Western Sierra Statutory Trust III | Delaware |
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| 2026-02-26 | Western Sierra Statutory Trust IV | Delaware |
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| 2026-02-26 | Klamath First Capital Trust I | Delaware |
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| 2026-02-26 | Lynnwood Financial Statutory Trust I | Connecticut |
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| 2026-02-26 | Lynnwood Financial Statutory Trust II | Delaware |
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| 2026-02-26 | Sterling Capital Trust III | Delaware |
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| 2026-02-26 | Sterling Capital Trust IV | Delaware |
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| 2026-02-26 | Sterling Capital Statutory Trust V | Connecticut |
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| 2026-02-26 | Sterling Capital Trust VI | Delaware |
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| 2026-02-26 | Sterling Capital Trust VII | Delaware |
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| 2026-02-26 | Sterling Capital Trust VIII | Delaware |
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| 2026-02-26 | Sterling Capital Trust IX | Delaware |
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| 2026-02-26 | Bank of Commerce Holdings Trust II | Delaware |
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