Mark J. Sullivan
Managing Principal – Chicagoland
Mark Sullivan is Grant Thornton LLP’s Chicago office managing principal and a member of the firm’s Partnership Board.
Chicago, Illinois
Industries
- Healthcare
- Technology, media & telecommunications
- Retail & consumer brands
Service Experience
- Advisory
Mark Sullivan
Executive summary
Mark is an experienced, optimistic, achievement-driven executive and board director for large private companies ($3-7B) and not-for-profit organizations. As an accomplished Senior Partner entrusted with overseeing a substantial operation at Grant Thornton LLP (GT), Mark has gained invaluable experience that mirrors the responsibilities of a CEO. Leading large teams and managing diverse portfolios, he has successfully navigated the intricacies of running a complex business within the firm.
Mark is lauded as a transformational and collaborative leader, developing effective strategies and leading the execution of successful initiatives. His investigative background has proven to be a unique skill in the boardroom, allowing him to delve into complex and technical issues from a governance perspective — then present these issues in a manner that is understood by all.
Professional qualifications and memberships
- Center for Interviewing Standards and Assessment, Advisory Committee Member
- National Immigrant Justice Center, Leadership Board Member
- American Society for Industrial Security
- Certified Fraud Examiner (CFE)
- Certified Forensic Interviewer (CFI)
- Certified Protection Professional (CPP)
Community involvement
- Choose DuPage, Board Member
- Union League Club of Chicago
- World Business Chicago, Board Member
Education
- BS, Administration of Justice, Southern Illinois University
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