John Barnes is a partner and leader of Grant Thornton’s Business Advisory Services practice in the Mid-Atlantic Region. He has more than 18 years of combined experience in internal audit, Sarbanes-Oxley, Specialty Attestation reports, tax and accounting consulting services. Prior to joining Grant Thornton, Barnes held other management positions at national accounting and consulting firms. His prior experiences include providing external audits and internal controls consulting within the COSO framework, and coordinating such work with all of the Big Four accounting firms. He has managed complex multi-project engagements and the simultaneous execution of multiple engagements including progress reporting and deadline management.
Prior Sarbanes-Oxley and internal audit engagement experience includes providing services in all phases to REITS, multi-national manufacturing firms, technology companies, government contractors and retailers.
- Real estate
- Aerospace and defense
- Government contractors
- Health care
- Hospitality and restaurants
- Not-for-profit organizations
- Trade and professional organizations
- Private equity
- Business consulting
- Governance, risk and compliance
Professional qualifications and memberships
CPA — Maryland, Virginia
Certified Internal Auditor (CIA)
Maryland Association of Certified Public Accountants
Institute of Internal Auditors
Arts on the Block, Past Board Member
Penn State Varsity S Club, Past Board Member; For the future campaign, Representative
MBA, Finance, University of Maryland
BS, Accounting and International Business, Pennsylvania State University
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