We are Grant Thornton

Chicago, Illinois

Service Experience
  • Tax
  • Advisory
  • Audit

Brian P. Duffy




Executive summary

Brian Duffy is responsible for developing new business for all service lines within Grant Thornton’s Midwest market territory. He has over 10 years of sales experience in professional services, working with clients that are both publicly traded and privately held. He works across a wide variety of industries and service lines, including corporate finance, due diligence, and tax, audit and advisory services.



Professional qualifications and memberships

  • Association for Corporate Growth
  • Institute of Internal Auditors



  • MBA, Administration, Loyola University – Chicago
  • MS, School of Technology – Purdue University

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