1983, BA in Physics, Korea University; 1989 PhD in Economics, University of Chicago. Formerly: Business Development Manager, Metra; Chief Executive Officer and Representative Director, SK Corporation; Chairman and Chief Executive Officer, SK Energy. Since 2007, current position. Since 2011, Chairman, SK Innovation. Since 2012, Chairman, SK Hynix. 1999, Global Leaders for Tomorrow, World Economic Forum. 2002, Co-Chair, East Asia Economic Summit, World Economic Forum. 2002, invited Chief Executive Officer Professor, Techno-Economics and Policy Program, Seoul National University. 2008, Director of the Board, UNGC. 2010, Member of the Advisory Board, RAND CPP. Member, Brookings ICA. 2018, Member of Council of Advisors, Boao Forum for Asia.