Discover 6 dynamic academic areas and gain insight from a vibrant learning community of more than 100 faculty and 80 adjunct professionals.
Our instructors combine academic excellence with extensive industry experience, providing students with both foundational knowledge and practical business insights.
All Costello College of Business Faculty, Alphabetical by Last Name
Adjunct Faculty, Finance
Brad Swanson is an adjunct faculty member in the finance area of Costello College of Business at George Mason University.
Executive Director, Center for Real Estate Entrepreneurship
Additional Roles: Executive Director, Master's in Real Estate Development ProgramDavid Tarter is the executive director for the Center for Real Estate Entrepreneurship and Master’s in Real Estate Development Program.
Adjunct Faculty, Management
Ali Tavakoli is an adjunct faculty member within the Management Area in the Costello College of Business at George Mason University.
Career Advisor, Office of Career Services
Additional Roles: Adjunct Faculty, ManagementHermella Tekle, Ed.D., M.P.S. is an educational leader and career specialist with over a decade of experience bridging the gap between classroom theory and workforce entry.
Instructional Associate Professor, Marketing
Betsy M. Tretola is an instructional associate professor within the Marketing Area in the Costello College of Business at George Mason University.
Adjunct Faculty, Finance
Mark Troutman is an adjunct faculty member within the Finance Area in the Costello College of Business at George Mason University.
Assistant Area Chair, Accounting
Additional Roles: Senior Instructor, AccountingPeggy Tsirigotis is an instructor within the Accounting Area in the Costello College of Business at George Mason University.
Arison Chair in Values Leadership; Associate Professor, College of Humanities and Social Sciences
Gregory C. Unruh is the Arison Professor of Values Leadership at George Mason University and an expert on sustainable business strategy.
Adjunct Faculty, Real Estate Development
Malcolm Van de Riet II is an adjunct faculty member within the Masters in Real Estate Development program in the Costello College of Business at George Mason University.
Dean, Costello College of Business
Additional Roles: Professor, Information Systems and Operations ManagementAjay Vinzé is the dean of the Donald G. Costello College of Business, one of the largest business schools in Virginia.