Gerry Keefe, head of US and European commercial and investment banking, left the firm recently, just over a year after taking the role. Karim Tannir, head of the newly created Middle East banking business and one of the region’s most veteran dealmakers, has also departed. Locally, Doris Wong, a senior banker covering Hong Kong real estate, energy and consumer clients, recently defected to Standard Chartered Plc, while London-based banker Robert Baker is also exiting.