First Interstate BancSystem, Inc.

Our Company is a financial and bank holding company focused on community banking. Incorporated in Montana in 1971, the company has grown organically and through strategic acquisitions. As of February 20, 2026, it 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 its bank subsidiary, First Interstate Bank, the company provides a comprehensive range of banking products and services, including online and mobile banking, to individuals, businesses, government entities, and others in its market areas. It serves clients in various industries, including Agriculture, Healthcare, Professional services, Technology, Construction, Hospitality, Real Estate Development, Tourism, Education, Housing, Retail, Wholesale trade, and Governmental services. The company's common stock is traded on the NASDAQ Global Select Market under the symbol "FIBK." Its market reach has expanded through organic growth and acquisitions, including 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. As of December 31, 2025, Our Company 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.