Mark Sullivan

Senior Managing Director

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Professional Experience

Associated Office


321 N. Clark Street
Suite 3400
Chicago, IL 60654

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Mark Sullivan leads GWS Solutions Excellence and Commercial Management for CBRE Americas.   As key components of the Sales and Solutions organization, his teams consist of seasoned Corporate RE  industry solutions experts who lead the design, costing and underwriting of CBRE's most complex enterprise partnerships, primarily focusing on global large cap corporations. 

Since 2007 Mark has personally led solution design for CRE client partnerships consisting of more than 775 msf of space managed, representing more than $2B in CBRE contract value. 

Prior to his Americas leadership role, Mark was a Regional Solutions Executive for CBRE’s Global Workplace Solutions for 8 years.  Mark’s region initially included the Central US and later included Canada.

Prior to joining Client Solutions, Mark spent 18 years in real estate operations managing offices,  power plants, data centers, retail centers, and  HQs including a LEED Gold HQ start up, which has provided a unique and empathetic perspective.