Costello College of Business Graduate Programs

A first-generation college graduate, Melvin Reyes emigrated from El Salvador as a teenager, not speaking a word of English and unsure of his career goals. Now a Student Ambassador for the Master’s in Finance program, Reyes represents Costello College of Business graduate programs to the external and internal communities, embodying excellence and sharing his own student experiences with prospective students.

Ioannis Bellos, academic director of Mason’s MBA program and associate professor of information systems and operations management at the Donald G. Costello College of Business at George Mason University joined Mason in 2012 after graduating from Georgia Tech, where he completed his PhD in operation management.

The support Grace Rebollo ’23 found for her disability from professors at George Mason University who understood her individual needs was one of the driving forces that led her to pursue a Master’s in Management at the Costello College of Business.

Tiago Requeijo, director of Mason’s Master’s in Finance program and assistant professor of finance at the Donald G. Costello College of Business at George Mason University has taken a unique journey from his studies in mathematics to a career in the finance industry. Learn more about him.

For John Davis, the welcoming staff and unwavering support, as well as the discussion-based class structure he found at the Donald G. Costello College of Business at George Mason University were the ideal conditions to succeed in the MBA program.

The Donald G. Costello College of Business at George Mason University’s Graduate Students of the Year for 2022-2023 exemplify the highest standards of academic excellence, leadership, and dedication to their field. Here, they explain why they chose Mason, and offer advice to others considering master’s degrees in business.

Ryan Archibald took his collegiate studies across the country and back again before joining the Donald G. Costello College of Business at George Mason University to pursue a degree from the Master’s in Real Estate Development program.

Director of George Mason University’s Master of Science in Business Analytics (MSBA) program, Mehmet Altug, found his passion while studying industrial engineering as an undergraduate. Altug says he took classes on manufacturing management, supply chain planning, and operations research, and liked the combination of quantitative models and business problems. Fast forward to today, and Altug, in addition to bringing his expertise to the MSBA program, also serves as an associate professor of operations management at the Costello College of Business.

Meeting a guest speaker in the classroom helped Bailey Wilson, MBA ’23, land a fulfilling job position in a new career path.

For Bret Johnson, academic director of the Master of Science in Accounting program at George Mason University School of Business, joining Mason was like coming home. Johnson previously lived in Fairfax County where he spent 10 years working as a senior auditor for Ernst & Young and as a staff accountant at the U.S. Securities and Exchange Commission (SEC), prior to pursuing his PhD at Ohio State.