Mark H. Landsberg Mark H. Landsberg

Mark H. Landsberg

Associate Senior Consultant

400 Valley Road, Suite 103
Mt. Arlington, NJ 07856

“In a world of asymmetrical demand, change, and opportunity, it is crucial that we play for real; rigorous accountability and authenticity are the pathway to breakthroughs.”

Mark H. Landsberg is an associate senior consultant with Guttman Development Strategies, Inc., focusing his professional expertise in the areas of executive, management, and organizational development. Mark leverages his unique Fortune 100 experience in operations, P&L, and business development to accelerate his clients’ business goals.

 He has served many industries, including:

  • consumer products
  • pharmaceuticals
  • manufacturing
  • retail
  • diversified financial services
  • venture capital
  • professional services
  • publishing
  • telecommunications
  • technology

Mark’s current assignments and principal focus include aligning senior management teams, developing the strategy for and implementation of horizontal, high-performance organizations (brand teams, matrix structures, global teams) and executive coaching and development. He also manages business-process redesign projects for various transformative operations and human resources-systems initiatives.

Mark began his career in organizational consulting and change management with Cap Gemini Ernst & Young (formerly United Research Co.), designing and delivering labor-management initiatives that boosted productivity, enhanced leadership skills, and reduced arbitration.

Mark held key in-house management development positions at Merrill Lynch & Co., and American Express. He was instrumental in creating multi-level development programs for businesses across the U.S., Canada, U.K., Latin America, and Japan. He specialized in internal consulting, working closely with business units to develop training game plans to improve sales, marketing, and operational effectiveness.

Mark's corporate experience also includes Citigroup’s (formerly Citibank’s) Systems and Technology Division, where he was director of training and organization development. Within a matrix organization, he instituted performance management, high-potential identification and leadership development, assessment centers, succession planning, and project management across business lines.

Before his association with GDS, Mark was an area managing director with the global human resources and career services consulting firm of Drake Beam Morin. There, he improved operations and revitalized their practice areas in senior-level executive coaching and development, outplacement consulting, and training.


  • M.S., industrial organization development, Columbia University School of Social Work
  • B.A., psychology The American University


  • Speeches
  • Leadership
  • Executive Assessment and Development
  • Career Transition
  • E-business
  • Managing Change
  • Author
  • “Sorry, You Have to Manage Conflict,” MWorld
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