UBS solves leadership puzzle Sergio Ermotti is formally anointed group CEO of UBS, while Axel Weber's appointment to chairman of the board is accelerated. November 15, 2011
Head rolls at UBS Oswald Grübel takes responsibility for the $2.3 billion trading loss at UBS and resigns as group CEO. He is replaced, on an interim basis, by Sergio Ermotti who joined UBS in April. September 25, 2011