Enterprise Bank & Trust Expands into Tucson with Acquisition of First Interstate Branches

TUCSON, AZ (November 12, 2025) — Enterprise Financial Services Corp (Nasdaq: EFSC), the holding company of Enterprise Bank & Trust (EB&T), has completed the acquisition of twelve branches from First Interstate Bank (Nasdaq: FIBK), marking a significant expansion of Enterprise’s presence across Arizona and the greater Kansas City metropolitan area.

The transaction adds ten Arizona branches—including new locations in Tucson, North Scottsdale, Old Town Scottsdale, Chandler, Maricopa, Casa Grande, Eloy, Coolidge, Globe, and Nogales—and two in Kansas, bringing approximately $300 million in loans and $645 million in deposits under the EB&T umbrella. Following the acquisition, Enterprise now manages roughly $17 billion in total assets.

James B. Lally, President and CEO of Enterprise, said, “The addition of these branches allows us to expand our access to existing markets with attractive growth opportunities. We believe this transaction will help us meet the needs of our new and existing customers while delivering long-term value for our shareholders.”

The newly acquired facilities have been fully converted into Enterprise Bank & Trust offices, providing former First Interstate customers with access to Enterprise’s full suite of commercial and retail banking products and services.

In Tucson, the transaction includes the 8,008-square-foot office building at 3002 N. Campbell Avenue, which was purchased by Enterprise Bank & Trust from First Interstate Bank for $1.92 million in October 2025.

Janney Montgomery Scott LLC and Holland & Knight LLP served as financial and legal advisors, respectively, to Enterprise on the acquisition.

Enterprise Bank & Trust, a subsidiary of Enterprise Financial Services Corp, operates across Arizona, California, Florida, Kansas, Missouri, Nevada, and New Mexico, offering business and personal banking, SBA lending, and wealth management services.

For more information, visit www.enterprisebank.com.

See RED Comp #12151 for Tucson sale.