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Mark Sullivan Profile Image

Mark Sullivan

Senior Managing Director

Mark Sullivan Senior Managing Director
Chicago 321 North Clark Street
Suite 3400
Chicago, IL 60654


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.

Significant Assignments

Mark’s clients cover the globe and all industry sectors and include:  Walgreens, Microsoft, JCPenney, Dell, Motorola, Eli Lilly, BP, Allstate, KPMG, Infrastructure Ontario, IBM, Sprint, Schneider Electric, Huntington Bank (fka First Merit), CEC, Exelon, DXC, Suncor , Iron Mountain, Bank of America, Visteon, McDonald’s, BMO Harris, Xerox, and TD Bank (fka TSFG).

Mark’s accounts have been awarded “Account of the Year” (ComEd -1997-1998); he and his teams were each awarded two global client communication awards (Visteon - 2005) and he has been recognized by Bank of America for his leadership in revamping the Business Continuity program (2006).  A group of Canadian leaders including Mark were recognized with the 2010 and 2015 annual CBRE “Turnaround Award," for transforming CBRE’s Canadian operation through a restructuring effort that focused on CRM, change management and key business development efforts.  

Mark’s operations experience is extensive, including two years on the Bank of America account where he was responsible for a full service (TM, FM, PJM and Planning) portfolio of more than 900 locations and 10 million square feet and supervised a staff of 123.  He has also led the overall real estate operating expense savings initiatives for the Bank of America account which resulted in over $170 million in savings over two years utilizing Six Sigma tools.

Clients Represented


  • Allstate
  • American Electric Power
  • Bank of America
  • BP
  • CEC
  • Convergys
  • Dell
  • DXC
  • Eli Lilly
  • Exelon
  • BMO
  • Iron Mountain
  • IBM
  • JCPenney
  • KPMG
  • McDonald’s Corporation
  • Microsoft
  • NCR
  • Infrastructure Ontario
  • TD Bank (fka TSFG)
  • Sprint
  • Suncor
  • Visteon
  • Walgreens
  • Xerox




BA from University of Wisconsin, Madison, WI


Mark Sullivan Senior Managing Director
Chicago 321 North Clark Street
Suite 3400
Chicago, IL 60654