Sandy joined the Vistra Board as an Independent Non-Executive Director in September 2022.

With over 40 years of experience, Sandy has held numerous roles with diverse organisations around the world and is the founder of CEO.works. Prior to this, he was an operating partner in private equity at the Blackstone Group and Chief Human Resources Officer for Unilever. He has held senior leadership roles at various companies including Motorola, Dove Associates, The VIA Consulting Group and the Center for Leadership Studies. 

Sandy is currently a member of the SVP funds’ Advisory Council and is the Chairman of the Board of Nord Anglia Education and Prometric – both portfolio companies of Baring Private Equity Asia. 

As a line officer in the United States Coast Guard, he started his career executing maritime rescues. He graduated from the United States Coast Guard Academy with a bachelor's degree in mathematics, and received a master's degree in human development from George Washington University and an MBA from the Kellogg School of Management. He has served on the boards of INSEAD, The Rotterdam School of Management (Erasmus University Netherlands), The European Academy for Business in Society (Vice Chairman), and BBH Advertising in London. In 2015, he was inducted as a Fellow by the National Academy of Human Resources.