Mr. William J. Young is a co-founder of Hyperion Homes, LLC and has been its managing partner since June 2012. Mr. Young is a co-founder of Ranieri Residential, LLC. Mr. Young serves as co-head of the Goldman Sachs Infrastructure Investment Group. Mr. Young joined Goldman Sachs as managing director in 2001 and its co-head of the European Structured and Principal Finance Group. He served as managing director of Equity Group Investments, LLC from 2009 to 2011. He was a partner at Goldman Sachs & Co. and Goldman Sachs International from 2001 to 2008, where he held a variety of positions including co-head of the European Mortgage Department and co-head of the Global Infrastructure Investment Fund. Since 2002, Mr. Young was a Partner in Financing Group of Goldman Sachs and also served as its co-head of the Corporate and Acquisition Finance Group. Mr. Young served at Citigroup and Citibank from 1987 to 2001, working in the Leveraged Finance and Work-Out Group and running its European Securitization Group. He serves as a director of Equity LifeStyle Properties, Inc. Mr. Young served as a director of Energy Future Holdings Corporation since 2007. He received a bachelor's of science degree from Purdue University in 1987.