FIRST INTERSTATE BANCSYSTEM, INC. Subsidiaries
Every subsidiary the company listed in Exhibit 21 of its annual reports, newest list first (16 lists). Names and jurisdictions are as filed.
- 2026-02-26: Subsidiary First Interstate Bank; Jurisdiction First Interstate Bank.
- 2026-02-26: Subsidiary FI Statutory Trust I; Jurisdiction FI Statutory Trust I.
- 2026-02-26: Subsidiary FI Capital Trust II; Jurisdiction FI Capital Trust II.
- 2026-02-26: Subsidiary FI Statutory Trust III; Jurisdiction FI Statutory Trust III.
| Annual report filed | Subsidiary | Jurisdiction |
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| 2026-02-26 | First Interstate Bank | First Interstate Bank |
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| 2026-02-26 | FI Statutory Trust I | FI Statutory Trust I |
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| 2026-02-26 | FI Capital Trust II | FI Capital Trust II |
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| 2026-02-26 | FI Statutory Trust III | FI Statutory Trust III |
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| 2026-02-26 | FI Capital Trust IV | FI Capital Trust IV |
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| 2026-02-26 | FI Statutory Trust V | FI Statutory Trust V |
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| 2026-02-26 | FI Statutory Trust VI | FI Statutory Trust VI |
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| 2026-02-26 | Northwest Bancorporation Capital Trust I | Northwest Bancorporation Capital Trust I |
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| 2026-02-26 | Great Western Statutory Trust IV | Great Western Statutory Trust IV |
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| 2026-02-26 | GWB Capital Trust VI | GWB Capital Trust VI |
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| 2026-02-26 | HF Financial Capital Trust V | HF Financial Capital Trust V |
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| 2026-02-26 | HF Financial Capital Trust VI | HF Financial Capital Trust VI |
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| 2026-02-26 | Sunstate Bancshares Trust II | Sunstate Bancshares Trust II |
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