Mark Sullivan serves as the Executive Vice President and a member of the U.S. Office Agency Board of Advisors at Colliers, a leading professional services and investment management company, since December 2020. Prior to this role, Mark held the position of Executive Managing Director at Cushman & Wakefield from April 1994 to December 2020. Mark's educational background includes a Bachelor of Science in Urban Studies and Planning from Virginia Commonwealth University, as well as studies at Christchurch School.
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