Northern Trust has nominated William Mak Singapore as country manager and head of South East Asia region. Mak comes to Northern Trust with more than two decades of experience in the financial services industry in Singapore, most recently as managing director for Bank of New York Mellon Asset Management in the region.As the senior executive responsible for the coordination of all business activities in the South East Asia region, Mak reports to Teresa A. Parker, chief executive officer of the Asia Pacific region for Northern Trust, who is also based in Singapore.