Al-Maiman is at the helm of Saudi’s biggest bank, National Commercial Bank (NCB), which had total assets worth over SAR367 billion in September 2013. NCB achieved a profit of SAR6.45 billion in 2012, a mammoth 7.3 per cent increase over the SAR6.01 billion achieved in 2011. Al-Maiman is also vice chairman of the Saudi Stock Exchange and chairman of NCB Capital Company.