Costello MBA program

At the beginning of 2026, Mike Derrios, MBA ’06, returned home to the Costello College of Business at George Mason University as the executive director of the Greg and Camille Baroni Center for Government Contracting.

When Q Miceli saw that the Costello College of Business at George Mason University was offering the Executive Mentoring Program as part of the Costello MBA, she was all in. “I had just hit a point in my career where I started supervising more people and really wanted to get some perspective,” she says.

“I think it's the real American dream to have something of your own, build something of your own,” says Bailey Mahoney, MBA ‘26. He grew up witnessing firsthand not only what could be built but also the freedom it created, as his father, who owned an electrical contracting business, always made time to be present for the important moments in his life. Without even realizing it, Mahoney found his first business mentor in his father.

Launched in the spring 2026 semester, the Innovation and Design Lab for Business and Government (MBA 797) is a new experiential MBA course offered at the Costello College of Business at George Mason University.

Supreet Singh, MS Computer Forensics '14, balances coursework with a demanding career, while gaining a lifelong network of colleagues and friends.

Working full-time while getting a graduate degree is no easy feat. But for Air Force veteran and soon-to-be George Mason University alum Kathleen Gillmore, hard work is second nature.

Sidney Yap, BS Information Systems Operations Management ‘20, MS Management ‘21, Business Analytics Grad Cert ‘22, MBA ‘25, exemplifies exceptional balance—driving innovative strategies at Navy Federal while representing the Philippines internationally in the hammer throw. 

Skip West, founder of MAXSA Innovations and adjunct faculty at the Costello College of Business at George Mason University, offers the course Turning Ideas into Successful Companies once a year to MBA students. The concept for the course came from West’s own entrepreneurial experiences of turning his ideas into companies.

Melissa Perry, ScD, MHS, Dean of George Mason’s College of Public Health, will graduate this spring with her Costello MBA—her third graduate degree, earned while serving as a full-time dean, raising two children, and leading one of the largest and fastest-growing public health programs in the region.

After eight years in the U.S. Army, Allen Taber, MBA ’22, was looking for a way to grow in his career. The Donald G. Costello College of Business at George Mason University provided him the tools he was seeking. Taber came to George Mason for an MBA, and left with a new dream of pursuing a doctorate.