First Financial Bancorp is a mid-sized, regional bank holding company. It operates through its wholly owned subsidiary, First Financial Bank, and provides banking and financial services product through four lines of business: Commercial and Private Banking, Retail Banking, Investment Commercial Real Estate, and Commercial Finance. First Financial utilizes a community banking business model and serves a combination of metropolitan and non-metropolitan markets through full-service banking centers primarily in Indiana, Ohio, and Kentucky. The primary component of its loan portfolio is commercial real estate loans, followed by commercial and industrial loans. A majority of First Financial's net revenue is net interest income.