Union Bank of Nigeria Plc operates as a bank holding company, which engages in the provision of investment, corporate, commercial, and retail banking. It offers insurance, registrars, pension fund custodial, trusteeship, and asset management services. It operates through the following segments: Retail Bank, Commercial Bank, Corporate Bank, and Treasury. The Retail Bank segment provides products and solutions to mass market, mass affluent, and small and medium enterprises. The Commercial bank segment caters to the banking needs of local corporates. The Corporate Bank segment offers services to large corporates. The Treasury segment supports clients in all segments of the bank. The company was founded in 1917 and is headquartered in Lagos, Nigeria.