Mark is an Executive Advisor to G100 and World 50. As the former Global Chairman and CEO of EY, Mark has experience leading a global business, working at the highest levels of government, and as an entrepreneur. He has a track record of driving transformative change in the public and private sectors during periods of unprecedented disruption.
During his time at EY—a leading global professional services organization with 284,000 people operating in more than 150 countries—he led the organization through a purpose-fueled transformation centered on EY’s purpose of building a better working world.
Mark’s government experience includes serving as Assistant Secretary of the U.S. Department of the Treasury (Tax Policy) in the George W. Bush Administration and was also appointed by President Clinton to serve on the Social Security Administration Advisory Board. He served as a member of President Trump’s former Strategic and Policy Forum and as a member of President Obama’s Infrastructure Task Force. He also worked in the U.S. Senate.
Mark played an active role in the World Economic Forum (WEF), as a member of its International Business Council and as a Global Agenda Steward for Economic Progress. He co-chaired the Russia Foreign Investment Advisory Council (FIAC) with Prime Minister Dmitry Medvedev and served as Chairman of the International Business Leaders Advisory Council (IBLAC) to the Mayor of Shanghai.
Mark sits on the board of Johnson & Johnson, MetLife, Saudi Aramco, and National Bureau of Economic Research (NBER). He serves as a Senior Advisor to Stone Canyon Industries Holdings, Teneo, and Chief Executives for Corporate Purpose (CECP). Mark also serves as a Strategic Advisor to the Board of FCLTGlobal, which focuses on long-term investing and corporate governance, is on the CEO Advisory Council of JUST Capital, and is a member of the Aspen Economic Strategy Group. Mark sits on the Board of Trustees for the United States Council for International Business (USCIB), the Greater Washington Partnership and The Concord Coalition. He is a member of the Board of Trustees for Emory University and Case Western Reserve University, and is a member of the Advisory Board of the Liveris Academy for Innovation and Leadership at The University of Queensland.
Mark has a BA from Emory University, an MBA and JD from Case Western Reserve University and an LLM in Taxation from Georgetown University Law Center. He has an honorary doctorate from the Kogod School of Business at American University.
|Alumni||Emory University, Case Western Reserve University, Georgetown University Law Center|
|Affiliated Organizations||Johnson & Johnson, MetLife, Saudi Aramco, Stone Canyon Industries Holdings, Teneo, FCLTGlobal, JUST Capital, National Bureau of Economic Research (NBER), Chief Executives for Corporate Purpose (CECP), Aspen Economic Strategy Group|
Les Brun is Senior Advisor for G100 Companies and Chairman and Chief Executive Officer of Sarr Group, LLC, a diversified holding company for his investments.
Gary Reiner serves as Operating Partner at General Atlantic. He currently sits on the GA portfolio company boards of CitiusTech, Box, AppDynamics, Mu Sigma, Seismic, SnapAV, and Turbonomic...
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