Key Takeaways First Financial will acquire BankFinancial in an all-stock deal valued at about $142 million.Acquisition will add 18 BankFinancial centers, strengthening its Chicagoland market reach.Move aligns with First Financial's broader Midwest expansion strategy across key states.First Financial Bancorp (FFBC) has entered into an agreement to acquire BankFinancial Corporation (BFIN) , a Chicago-based financial institution, in an all-stock transaction valued at approximately$142 million. The move aligns ...