Boon Sim, the global head of Credit Suisse's mergers business, is leaving the bank for a position at Singapore-based investment firm Temasek, people familiar with the matter said.

Veteran Credit Suisse banker Scott Lindsay will take on the mantle of global deals chief, reprising an earlier role, according to the people. Lindsay, a vice chairman at the bank, is currently co-chairman of the global mergers and acquisitions group.