First Interstate Bancsystem IncFIBK
What First Interstate Bancsystem Inc does.
We are a financial and bank holding company focused on community banking. Since our incorporation in Montana in 1971, we have grown both organically and through strategic acquisitions. As of February 20, 2026, we operated 290 banking offices, including branches and detached drive-up facilities, in communities across 12 states— Colorado, Idaho, Iowa, Minnesota, Missouri, Montana, Nebraska, North Dakota, Oregon, South Dakota, Washington, and Wyoming. Through our bank subsidiary, First Interstate Bank, we deliver a comprehensive range of banking products and services—including online and mobile banking—to individuals, businesses, government entities, and others throughout our market areas.
We are proud to provide financial services and products to clients that participate in a wide variety of industries, including:
Our common stock is traded on the NASDAQ Global Select Market, or NASDAQ, under the symbol “FIBK.” Since our initial public offering, we have expanded our market reach through organic growth and strategic acquisitions, including our acquisitions of Mountain West Bank, United Bank, N.A., Flathead Bank of Bigfork, Bank of the Cascades, Inland Northwest Bank, Idaho Independent Bank, Community 1st Bank, and Great Western Bank. Our current strategy emphasizes disciplined organic growth by deepening and expanding full client relationships across deposits, lending and fee-based services. As of December 31, 2025, we had consolidated assets of $26.6 billion, deposits of $22.1 billion, loans held for investment of $15.2 billion, and total stockholders’ equity of $3.4 billion.
Revenue and profit, by fiscal year.
| Fiscal year | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|
| Revenue | $653.7M | $638.7M | $1.1B | $1.0B | $999.7M | $1.1B |
| Net income | $161.2M | $192.1M | $202.2M | $257.5M | $226.0M | $302.1M |
More on FIBK.
- First Interstate Bancsystem Inc summary
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- First Interstate Bancsystem Inc earnings
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- First Interstate Bancsystem Inc valuation
- First Interstate Bancsystem Inc ownership and insiders
- First Interstate Bancsystem Inc peers
Figures from First Interstate Bancsystem Inc's filings with the U.S. SEC, standardised automatically; prices are end-of-day closes. Not financial advice.