First Financial Bank acquires BankFinancial

First Financial Bancorp is set to finalize its acquisition of BankFinancial Corporation for $2.2 billion in an all-stock transaction slated to close on January 1, 2026. This strategic move marks First Financial's entry into the Chicago retail market and adds a significant boost to its regional commercial banking presence. Post-acquisition, First Financial will incorporate BankFinancial’s 18 branches within the Chicago metropolitan area, enhancing its footprint in a critical Midwestern market.

The acquisition will expand First Financial’s asset base to approximately $22 billion, adding to its capabilities across consumer banking, commercial banking, specialty lending, and wealth management. BankFinancial’s branches will initially operate under their existing name, with system and product integration anticipated to conclude by June 2026. During this transition, BankFinancial’s customers will continue to leverage their current banking avenues, with detailed information on account transitions forthcoming.

The decision to acquire BankFinancial is part of a broader strategic plan by First Financial to strengthen its Midwest operations. The acquisition comes on the heels of previous moves by First Financial, including the establishment of a commercial lending office in Fulton Market, Chicago, in 2023, and the acquisition of Agile Premium Finance in 2024. Additionally, First Financial completed its acquisition of Westfield Bank in late 2025, underscoring an ongoing focus on regional diversification and growth.

Within the broader commercial banking sector, this acquisition underscores a trend where institutions are seeking growth through geographic and service line expansion amid a competitive and consolidating market landscape. For First Financial, bolstering its presence in a major city like Chicago aligns with its ambition to deliver a diversified array of banking services to a larger client base.

Looking ahead, the completion of the BankFinancial integration will be pivotal. Key milestones include the successful conversion of systems expected by mid-2026, which will be critical in ensuring a smooth transition for customers and facilitating synergies from the merger. Stakeholders will be closely observing the commercial benefits and operational efficiencies that may emerge as First Financial consolidates its new assets in the Midwest market.