Four months after his high-level departure from JPMorgan, Trevor Loewensohn has signed with UBS Australia as vice chairman of investment banking. With his coveted list of contacts, Loewensohn was courted by nearly every shop in the country but eventually settled on a part-time arrangement with Chris Mackay, chief executive officer of UBS Australasia. A clever M&A and corporate finance banker, he will focus on client relationships and investment banking advice for existing and new clients.