First Interstate BancSystem

What First Interstate BancSystem does

First Interstate BancSystem, Inc. (NASDAQ: FIBK) is a financial services holding company headquartered in Billings, Montana, and the parent of First Interstate Bank, a community bank operating across 10 states in the western and midwestern United States (Colorado, Idaho, Iowa, Montana, Nebraska, Missouri, Oregon, South Dakota, Washington, and Wyoming). The bank serves individuals and families, small and mid-sized businesses (including agricultural operations), and municipalities with a relationship-banking model emphasizing local decision-making and community presence. Founded in 1968 by Homer Scott, Sr. and incorporated in 1971, the company has grown to $26.4 billion in total assets as of March 31, 2026, generating Q1 2026 revenue of $241.8M and net income of $60.2M.

The product portfolio spans core banking deposits (demand, savings, time), a diversified loan book (commercial real estate, construction, residential, agricultural, consumer, commercial), payment services, mortgage origination and servicing, and wealth management. The operating platform combines physical branches with online and mobile banking channels, supplemented by partner-enabled modules such as Prolific Banking's On-Ramp treasury management onboarding (launched May 2026) and an early-stage pilot on Fiserv's agentOS agentic AI platform for workflow automation. Total assets have contracted year-over-year due to branch divestitures (Arizona/Kansas to Enterprise Financial Services Corp completed October 2025; Nebraska to Security First Bank pending early 2026) and loan portfolio optimization.

Revenue is driven primarily by net interest income (net interest margin reached 3.41% in Q1 2026, the eighth consecutive quarter of sequential improvement), with secondary streams from payment services, wealth management fees, mortgage banking revenues, and deposit account service charges. GTM motion is community-led through physical branches complemented by digital channels. In 2025-2026, the company executed a strategic pivot away from M&A toward organic growth following activist engagement by HoldCo Asset Management, accompanied by leadership transitions (sole Chief Banking Officer appointment, COO termination with CEO temporarily assuming duties), an increased $300M share repurchase authorization, and the outsourcing of its consumer credit card portfolio.

Name

First Interstate BancSystem

Legal name

First Interstate BancSystem, Inc.

Website

https://fibk.com

Company type

Public

Founded year

1971

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

First Interstate BancSystem is a Billings, Montana-based financial holding company operating community bank First Interstate Bank across 10 western and midwestern U.S. states, serving individuals, businesses, and municipalities with deposits, lending, mortgage, wealth, and payment services.

Ownership category

akta.pro rank

Headquarters

HQ city

Billings

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Technology or R&D, Marketing or Sales

Revenue model

1. Net Interest Income: Primary revenue stream from interest earned on loans and investment securities minus interest paid on deposits and borrowings. Net interest margin was 3.41% in Q1 2026, marking the eighth consecutive quarter of sequential margin improvement.
2. Payment Services Revenues: Revenue from payment processing services including consumer credit card interchange (though credit card portfolio was outsourced in Q2 2025).
3. Wealth Management Revenues: Revenue from wealth management and trust services provided to customers.
4. Mortgage Banking Revenues: Revenue from mortgage origination and servicing activities.
5. Service Charges on Deposit Accounts: Fees charged on deposit accounts including overdraft fees and account maintenance charges.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

First Interstate BancSystem operates as a financial services holding company running a community bank franchise that provides deposit products, commercial and consumer loans, treasury management, wealth management, and mortgage banking services. It serves consumers, businesses, and municipalities across 10 western U.S. states through a combination of physical branches and digital channels. Revenue is primarily generated from net interest income on lending activities, with additional fee-based income from treasury, wealth, and mortgage services.

Product overview

First Interstate BancSystem operates as a financial services holding company and parent of First Interstate Bank, a community bank delivering a comprehensive range of banking products and services. The product portfolio consists of core banking services including deposit products (demand deposits, savings, time deposits), commercial and consumer loan portfolios (real estate, construction, agricultural, consumer indirect/direct, commercial), payment services, wealth management, and mortgage banking. The bank also partners with third-party providers such as Prolific Banking to offer specialized treasury management onboarding solutions, representing a platform-plus-partner-modules architecture.

Differentiator

Problem solved

Functional benefit

Products and services

• Consumer Deposit Accounts Checking, savings, money market, and certificate of deposit accounts for individual consumers across the bank's 10-state western footprint.
• Commercial Deposit and Treasury Management Business checking, money market, and treasury management services (including cash management, ACH, wires, and remote deposit) for businesses and municipalities.
• Commercial Lending Commercial and industrial loans, commercial real estate loans, agricultural loans, and municipal/public-sector lending for business and government borrowers.
• Consumer Lending Residential mortgage, home equity, consumer installment, and indirect lending products for individual consumers.
• Wealth Management Investment advisory, trust, brokerage, and financial planning services for individuals and businesses.
• Mortgage Banking Residential mortgage loan origination, processing, and secondary market activities for consumer home buyers.

Quantifiable outcome

• Net interest margin expanded to 3.41% in Q1 2026, marking eighth consecutive quarter of sequential improvement
• +1 more outcomes

Named customers1 record

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration1 record

Feature1 record

Partnerships

Four partnerships are on record, tiered supporting, core, pending divestiture and completed divestiture.

• Prolific BankingsupportingTechnology or Integration · 19 May 2026First Interstate Bank launched Prolific Banking's On-Ramp treasury management onboarding solution into production. The solution provides automated enrollment for cash management customers, creating efficiencies and reducing redundant implementation tasks. Tim Schmidt, Director of Treasury Management at First Interstate Bank, noted the solution improved speed to market.
• FiservcoreTechnology or Integration · 14 May 2026First Interstate Bank is one of two financial institutions already running pilots on Fiserv's agentOS platform, an agentic AI operating system for banking workflows. The bank is co-developing agents with Fiserv and reporting measurable gains including reduced report times and automated loan onboarding. Expected wide release in August 2026.
• Security First Bankpending divestitureChannel Partner/ Reseller/ Distributor · 16 October 2025Security First Bank plans to acquire 11 Nebraska branches from First Interstate Bank. The transaction was expected to close in early 2026 pending regulatory approval, and will expand Security First Bank's Nebraska branches to 34 locations, involving approximately $280 million in deposits and $70 million in loans.
• Enterprise Bank & Trustcompleted divestitureChannel Partner/ Reseller/ Distributor · 14 October 2025Enterprise Financial Services Corp completed acquisition of 12 branches from First Interstate Bank, adding branches in Arizona and Kansas with approximately $300 million in loans and $645 million in deposits. The acquired branches were fully converted to Enterprise Bank & Trust offices.

Scale indicators6 records

Recent moves10 records

Expansion highlights5 records

Direct peers

• Cullen/Frost Bankers: Texas-headquartered regional bank focused on commercial and consumer banking across multiple states, with comparable asset size and emphasis on relationship-based community banking.
• Western Alliance Bancorporation: Phoenix-based regional bank serving western U.S. markets with overlapping commercial banking footprint and treasury management capabilities.
• Banner Corporation: Pacific Northwest community bank holding company operating across Washington, Oregon, Idaho, and California — overlapping geography and customer mix with First Interstate's footprint.
• Pinnacle Financial Partners: Tennessee-based regional bank with a similar relationship-banking model, mid-sized asset base, and focus on organic growth in mid-sized markets.
• UMB Financial: Midwestern regional bank holding company offering commercial, retail, and treasury management services with similar scale, customer mix, and relationship-banking orientation.
• FB Financial: Tennessee-based regional bank with comparable asset size, community banking focus, and emphasis on commercial lending and treasury management in mid-sized markets.
• Independent Bank Group: Texas-based community bank holding company with comparable asset size, relationship-banking focus, and multi-state commercial banking operations.
• Commerce Bancshares: Midwest-headquartered regional bank with a comparable community-banking approach, similar balance-sheet size, and a long dividend history.
• Glacier Bancorp: Mountain West regional bank holding company headquartered in Kalispell, Montana with a similar community-banking footprint across the same western U.S. states served by First Interstate. Closest direct comparable by size, geography, and operating model.

Broad incumbents

• Bank of Hawaii: Regional bank holding company serving consumer and commercial customers with similar deposit-driven community banking model, though concentrated in Hawaii rather than the mainland U.S.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Subsidiaries1 record

Funding overview

Funding rounds1 record

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about First Interstate BancSystem