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v3.25.4

Acquisitions - Summary of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands | Oct. 10, 2025 | Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | --- | --- | ---
Liabilities assumed: |  |  |  |
Goodwill |  | $ 416,968 | $ 365,164 | $ 365,164
Branch Acquisition |  |  |  |
Assets acquired: |  |  |  |
Cash and due from banks | $ 2,235 |  |  |
Loans | 291,013 |  |  |
ACL on loans | (3,298) |  |  |
Total loans, net | 287,715 |  |  |
Fixed assets, net | 8,783 |  |  |
Intangible assets, net | 16,414 |  |  |
Other assets | 4,353 |  |  |
Total assets acquired | 319,500 |  |  |
Liabilities assumed: |  |  |  |
Deposits | 641,718 |  |  |
Other liabilities | 4,387 |  |  |
Total liabilities assumed | 646,105 |  |  |
Net assets acquired | (326,605) |  |  |
Total consideration received | (274,801) |  |  |
Goodwill | 51,804 |  |  |
Branch Acquisition | As Recorded by First Interstate |  |  |  |
Assets acquired: |  |  |  |
Cash and due from banks | 2,235 |  |  |
Loans | 297,423 |  |  |
ACL on loans | 0 |  |  |
Total loans, net | 297,423 |  |  |
Fixed assets, net | 8,623 |  |  |
Intangible assets, net | 0 |  |  |
Other assets | 4,020 |  |  |
Total assets acquired | 312,301 |  |  |
Liabilities assumed: |  |  |  |
Deposits | 641,581 |  |  |
Other liabilities | 4,387 |  |  |
Total liabilities assumed | 645,968 |  |  |
Net assets acquired | (333,667) |  |  |
Branch Acquisition | Adjustments |  |  |  |
Assets acquired: |  |  |  |
Cash and due from banks | 0 |  |  |
Loans | (6,410) |  |  |
ACL on loans | (3,298) |  |  |
Total loans, net | (9,708) |  |  |
Fixed assets, net | 160 |  |  |
Intangible assets, net | 16,414 |  |  |
Other assets | 333 |  |  |
Total assets acquired | 7,199 |  |  |
Liabilities assumed: |  |  |  |
Deposits | 137 |  |  |
Other liabilities | 0 |  |  |
Total liabilities assumed | 137 |  |  |
Net assets acquired | $ 7,062 |  |  |

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