8-K: First Interstate Sells 11 Nebraska Branches to Security First

First Interstate BancSystem, Inc. announced its subsidiary will sell eleven Nebraska branches, including approximately $280 million in deposits and $70 million in loans, to Security First Bank.

Summary

• First Interstate Bank, a wholly-owned subsidiary of First Interstate BancSystem, Inc., has entered into a Purchase and Assumption Agreement with Security First Bank.
• Security First Bank will acquire eleven branches from First Interstate Bank, located across Nebraska.
• The transaction includes approximately $280 million in deposits and $70 million in loans, as measured on September 30, 2025.
• The agreement also covers the owned real estate and fixed and other assets associated with these branches.
• The branches are located in Alliance, Atkinson, Broken Bow, Burwell, Callaway, McCook, Norfolk, O'Neill, Ord, Scottsbluff, and Sidney, Nebraska.
• The closing of the transaction is subject to regulatory approval and other customary conditions.
• The parties anticipate the transaction will close by early 2026.
• Upon closing, Security First Bank's market presence in Nebraska will expand to 34 full-service branch locations.

Sentiment

Score: 7

Explanation: The transaction is a strategic move for both parties, allowing First Interstate to optimize its portfolio and Security First to expand. While First Interstate is divesting assets, it's framed as a positive for capital redeployment. The risks are standard for such transactions, indicating a generally positive but not transformative event.

Positives

• First Interstate BancSystem, Inc. gains an opportunity to redeploy capital with the goal of accelerating growth in its strongest markets.
• Security First Bank will significantly expand its market presence in Nebraska, increasing its full-service branch locations to 34.
• Both companies emphasize a shared commitment to community, personal service, and local investment, suggesting a smooth transition for customers.
• The transaction is expected to enable clients, teams, and communities to continue flourishing under Security First's ownership.

Negatives

• First Interstate BancSystem, Inc. will divest 11 branches, reducing its physical footprint and associated deposit and loan balances in Nebraska.

Risks

• Consummation of the transaction is subject to regulatory approval and satisfaction of other customary closing conditions, which may not be met.
• Forward-looking statements are subject to numerous assumptions, risks, and uncertainties, many of which are outside the control of the Company, and actual results could differ materially.
• Risks include new or changes in existing governmental regulations, negative developments in the banking industry, and increased regulatory scrutiny.
• Potential for more stringent capital requirements, changes in accounting standards, or failure to comply with applicable laws and regulations.
• A decline in economic conditions could reduce demand for products and services and negatively impact loan credit quality.
• Loan credit losses could exceed estimates, and changes to United States trade policies could have adverse effects.
• Cybersecurity risks, including denial-of-service attacks, network intrusions, and other malicious behavior, could result in confidential information disclosure.
• Privacy, information security, and data protection laws could affect or limit how either company collects and uses personal information.
• The potential impairment of goodwill and other intangible assets, and reliance on other companies for key business infrastructure components.
• Events that may tarnish either company's reputation, including mainstream and social media contagion.
• The loss of key members of management and directors, or the inability to attract and retain qualified employees.
• Risks related to acquisitions, mergers, strategic partnerships, divestitures, and other transactions, including the risk that this branch sale may not be consummated on a timely basis or at all.
• Competition from new or existing financial institutions and non-banks, and the incurrence of significant costs related to mergers and integration activities.
• The actual amounts of loans and deposits acquired are subject to change prior to closing.
• Targeted financial benefits are subject to uncertainty and may be affected or offset by other conditions related to operations.

Future Outlook

The transaction is anticipated to close by early 2026, pending regulatory approval and customary closing conditions. First Interstate BancSystem, Inc. expects to redeploy capital to accelerate growth in its strongest markets. Security First Bank projects an expansion of its Nebraska market presence to 34 full-service branch locations upon completion of the acquisition.

Management Comments

• Gregory A. Hunter, President of Stockmens Financial Corporation and CEO of Security First Bank, stated: "We're thrilled to welcome these First Interstate branches into our family and deepen Security First's roots across Nebraska. We share First Interstate's unwavering commitment to community, personal service, and local investment, and we've been committed to those standards since our founding in 1898. We look forward to serving our new clients and neighbors with the same passion, integrity, and hometown spirit they've come to expect."
• James A. Reuter, President and CEO of First Interstate and First Interstate Bank, stated: "We are pleased to enter into this agreement with Security First. Their relationship-driven, customerand community-centric strategy resonates with our core principles, enabling clients, teams, and communities to continue flourishing. This agreement also provides an opportunity for us to redeploy capital with the goal of accelerating growth in our strongest markets."

Industry Context

This transaction aligns with broader industry trends where larger regional banks like First Interstate optimize their branch networks by divesting non-core or less strategic assets to focus on higher-growth areas. Simultaneously, community banks such as Security First leverage these opportunities to expand their local footprint and deepen market penetration, reinforcing their commitment to specific geographic regions.

Comparison to Industry Standards

• NA

Stakeholder Impact

• Shareholders (First Interstate): Potential for enhanced long-term value through strategic capital redeployment and accelerated growth in core markets.
• Shareholders (Security First): Expected benefits from expanded market presence and potential for increased profitability and market share in Nebraska.
• Customers (Acquired Branches): Transition to Security First Bank, with management emphasizing continuity of community-focused and personal banking services.
• Employees (Acquired Branches): Implied transition of employment to Security First Bank, though specific details on employment terms are not provided.
• Communities (Nebraska): Continued local banking services, with Security First Bank reinforcing its commitment to the communities it serves.

Next Steps

• Obtain necessary regulatory approval for the transaction.
• Satisfy all other customary closing conditions outlined in the Purchase Agreement.
• Complete the closing of the purchase and sale of the branches by early 2026.
• Fully convert the acquired branches to operate under the Security First Bank brand and systems.

Key Dates

Recommendation

The divestiture of 11 branches by First Interstate is a strategic move aimed at optimizing its branch network and redeploying capital into stronger markets, which is generally a prudent financial decision. For Security First, it represents a significant expansion of its Nebraska footprint. While the transaction itself is positive for both companies' long-term strategic goals, it is an anticipated operational adjustment rather than a transformative event that would warrant a "strong buy" or "strong sell" recommendation. Investors should hold to observe the execution of the capital redeployment strategy and the integration of the new branches.

Keywords

First Interstate BancSystem, FIBK, Security First Bank, branch acquisition, Nebraska, bank branches, deposits, loans, financial services, banking, divestiture, regional banking