Their appointments will increase the board to 13 members. : The appointees are former PSA International group chief executive Tan Chong Meng and Mr Geoffrey Wong, former head of emerging markets and Asia-Pacific equities at UBS Global Asset Management. Mr Tan joined the Temasek board on April 1 while Mr Wong joins on May 10. Their appointments will increase the board to 13 members. Before he joined PSA, Mr Tan led global businesses in the Royal Dutch Shell Group and had an earlier stint with the Ministry of National Development.