The global leader in human performance

One of the world’s foremost experts on performance, Mark is the founder and president of Exos. In his role he focuses on elevating performance globally, overseeing the continual Exos evolution to raise up all of the company’s clients. He’s a global keynote speaker and the author of six books and numerous research articles.

His 30 years of experience includes being the founder and president of IMG Academy’s International Performance Institute and serving as a performance and nutrition coach for Washington State University, University of Idaho, and Georgia Tech. Mark has also served as the performance director of the NFL Players Association for 22 years.

Dan Burns returns to Exos as chief executive officer in late 2024, after serving for five years as executive chairman of our board of directors and as CEO for ten years prior to that. Dan can be described as Exos’s roots and its wings: His deep experience and history with Exos coupled with his expertise in emerging technology position him as the ideal leader for the company’s next phase of growth.

Dan also serves as a partner of Monsoon Venture Fund, general partner of the Sonoran Founders Fund, and sits on several additional business boards, as well as the Board of Trustees of the Barrow Neurological Foundation. He’s an associate faculty and advisory board member at Arizona State University's Allan 'Bud' Selig Master of Sports Law and Business Program. Prior to joining Exos, he began his career in consulting at Bain & Company and then in business operations at the National Basketball Association. Dan earned a Bachelor of Arts degree in Economics and History from Amherst College, graduating magna cum laude, and an MBA from Harvard Business School.

With Exos since 2014, Bill Bourque serves as the company’s President, Enterprise Services. He leads the development, evolution, and delivery of solutions to Exos clients, including facility design, operations, and business development.

He previously served as the president and COO of Medifit and vice president of operations for Fitcorp. He graduated from the University of Massachusetts Amherst with a degree in exercise science and earned an MBA from Northeastern University.
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Amanda joined Exos in 2003 and now leads the Exos performance innovation team as President, Performance tasked with bringing the most cutting-edge solutions to Exos clients and helping to pioneer the industry of human performance.

Amanda holds a master’s degree in both sports/clinical nutrition and exercise physiology. She has worked with professional and elite athletes, collegiate sports teams, military operators, and forward-thinking organizations to optimize their human performance systems. 

Amanda is a national speaker, has contributed to many sports and fitness-based publications, edited various sports nutrition books and educational texts, and now serves as an ambassador to the Collegiate and Professional Sports Dietitians Association after serving on their Board of Directors for six years.
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With Exos since 2005, Jeff Sassone serves as the company’s President of Sport. He leads Exos’ global sports business, inclusive of professional, collegiate, military, and education partnerships, overseeing strategy, performance delivery, and continued innovation across these sectors.

Jeff began his career on the performance staff at the University of Illinois before joining the performance team at IMG Academy’s International Performance Institute, where he worked alongside industry leaders to advance integrated training methodologies. He later helped launch Velocity Sports Performance, contributing to the growth of its national franchise model.

A graduate of the University of South Florida, Jeff has spent more than two decades shaping the field of human performance and building high-impact programs that elevate athletes, tactical professionals, and teams around the world.

Liz Austin joined Exos in 2022 as chief marketing officer, bringing over 20 years of experience across global marketing, communications, strategy, operations, and digital transformation. Liz leads the company's marketing organization and is responsible for creating and implementing marketing strategies that drive brand awareness, revenue growth, and member engagement.

Prior to joining Exos, Liz previously held a range of marketing leadership roles at LEAP Legal Software, McGraw-Hill Education, Reed Elsevier, Complinet, Wolters Kluwer, Thomson Reuters, and Wiley.
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With Exos since 2020, Greg Hill is the company’s chief people officer. By advocating for and supporting the development of Exos team members, he leads people operations, talent acquisition, and culture development. Exos’s culture has been recognized as a certified Great Places to Work and Best Employer in Sports by Front Office Sports.  

His 30 years of experience includes leading people and workforce strategies for Equinox, SoulCycle, Starwood (Sheraton, St Regis, W Hotels, Westin) and Hyatt Hotels. He is the former chairman of the American Hotel & Lodging Association’s Labor Council and has a B.S. in Human Resources from Niagara University.
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Alex Kravis joined Exos in 2025 as Senior Vice President of Product & Technology, bringing more than 15 years of experience building and scaling data-driven products and high-performing teams. Her work sits at the intersection of human experience and technology, aligning with Exos’ evolution into a performance-led, technology-enabled organization.

Prior to Exos, Alex spent over a decade at Amazon, where she led product, engineering, operations, and production teams at Prime Video across movies, television, and live sports, helping deliver global consumer experiences at scale. She also led partner solutions teams for Amazon Music, working closely with external stakeholders to build extensible, platform-level systems and integrations.

Alex holds a degree in Economics and Film Studies from the University of Rochester and a Master’s degree in Information Science from Indiana University. She now applies this interdisciplinary background to building scalable, data-informed products that advance the future of human performance.