Brian Rosen is the president and chief executive officer at Canada at Colliers. In his role as CEO, Brian is responsible for driving growth and establishing the strategic direction of the business in Canada. Chris McLernon is chief executive officer, real estate services, global at Colliers. He oversees Colliers’ Capital Markets, Leasing and Outsourcing & Advisory businesses globally, with emphasis on accelerating growth, enhancing global collaboration, and strengthening Colliers' unique culture and way of doing business.