1. Home >
  2. Companies >
  3. Public >
  4. Financial Services >
  5. United States >
  6. First Interstate Bank >
  7. M&A

First Interstate Bank Mergers & Acquisitions

First Interstate Bank M&A Summary

First Interstate Bank has acquired 16 companies, including 1 in the last 5 years. A total of 5 acquisitions came from private equity firms. It has also divested 4 assets.

First Interstate Bank’s largest acquisition to date was in 2021, when it acquired Great Western Bancorp for $2.0B. It’s largest disclosed sale occurred in 2017, when it sold Citizens Bancshares to Investar Holding for $46M. First Interstate Bank has acquired in 8 different US states. The Company’s most targeted sectors include financial services (100%).

M&A Summary

  • M&A Total Activity17
    • M&A Buy Activity13
    • M&A Sell Activity4
  • Total Sectors Invested 1
  • Total Countries Invested 1
  • M&A Buy/Sell Connections 9

First Interstate Bank

First Interstate BancSystem, Inc.

401 North 31st Street,
Billings, Montana 59116
United States,
(406) 255-5311
www.fibk.com

All (17) Buy (13) Sell (4)
Date Target Value
$mlns 		Transaction Type Acquirer Seller SRC
Link
2025-10-16 First Interstate Bank's 11 Banking Offices · Financial Services
, Nebraska

First Interstate Bank's 11 Banking Offices offer personal, business, and banking services. First Interstate Bank's 11 Banking Offices are based in Nebraska.

- Divestiture

Security First Bank

First Interstate Bank


Try Mergr Free — See This and 220,453+
Other Company and Investor Profiles Today

Try free. Full access. Cancel anytime.

  • check  Unlimited Searches
  • check  Unlimited Profile Views
  • check  Build and Export Lists of
    • PE Backed Companies
    • Direct Investors & Acquirers
    • Advisors
    • Deals
    • & More
Try Free

What's Mergr?

Mergr is a user-friendly database designed to simplify the complex world of private equity and M&A for busy professionals.

We created Mergr to eliminate the challenge of tracking company acquisitions, sales, and ownership, providing clear insights into investment firms and their activities. For example, explore an investment firm’s investment criteria, deal history, portfolio, and connections - organized to help you uncover opportunities and make informed decisions.

With Mergr, gain access to a comprehensive, interconnected web of transactions, investors, companies, and advisors - all in one place.

Mergr, the Easiest-to-Use PE and M&A DB

Key Benefits

  • Stay informed on events in your industry
  • M&A research that takes seconds (not all afternoon)
  • Better understand your customers and prospects
  • Discover active buyers (or sellers)
Search
  • 4.8K Private Equity Firms
  • 214K M&A Transactions
  • 216K Companies Involved in M&A
    (Buyer, Seller, or Target)
  • 3.8K M&A Advisors
    (Investment Banks and Law Firms)
  • 82K M&A Contacts
    (PE and M&A Advisors)

What next?

Try Free

Full access to Mergr's investor, acquirer, and transaction data starts here.

Mergr

Solution for

Product

Company

Legal