Hamad bin Jassim bin Jaber Al Thani was prime minister of Qatar between 2007 and 2013; he also served as foreign minister from 1992 until 2013.
His great uncle founded modern Qatar in 1971, and he's a cousin of the current Emir.
Through an entity called Paramount Services Holdings, Hamad bin Jassim Al Thani owns 3% of Deustche Bank, his biggest publicly-traded holding.