Sterling Bank Plc “Your one-customer bank” is a full service national commercial bank in Nigeria. In over 50 years of operations, Sterling Bank (formerly NAL Bank) has evolved from the nation’s pre-eminent investment banking institution to a fully-fledged commercial bank; and completed a merger with 4 other banks – Indo-Nigeria Merchant Bank, Magnum Trust Bank, NBM Bank and Trust Bank of Africa – as part of the 2006 consolidation of the Nigerian banking industry.