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Mark D. Ein is an investor, entrepreneur and philanthropist, who has created, acquired, invested in and built a series of growth companies across a diverse set of industries over the course of his 25-year career. During this time, Mr. Ein has been involved in the founding or early stages of six companies that have been worth over one billion dollars and has led over $1.5 billion of private equity, venture capital and public company investments. Currently, Mr. Ein is the Founder, Chairman and CEO of Capitol Investment Corporation 4, a public acquisition company that closed its $402 million IPO in August 2017; Founder and CEO of Venturehouse Group, LLC and Leland Investment Co., holding companies that create, invest in and build growth businesses in a range of industries; Chairman of World TeamTennis (WTT), the 43-year-old professional tennis league acquired from Billie Jean King in March 2017; Founder and Owner of the Washington Kastles WTT franchise that has won the league championship six of its ten years since its founding; And most recently, the owner of the Washington City Paper, the renowned weekly paper serving the Washington, D.C. metropolitan area since 1981.

A native of the Washington area, he actively supports many community, charitable and cultural organizations and currently serves on the boards of the DC Public Education Fund, DC College Access Program, Federal City Council Langston Initiative, DC Policy Center, the United States Tennis Association (USTA) and the International Tennis Hall of Fame. He has won numerous awards including Washington DC Business Leader of the Year from the Chamber of Commerce, the Jefferson Award, Washington Business Journal Top Corporation for Philanthropy (Small Companies), Washington Business Journal Power 100, Entrepreneur of the Year Awards from Ernst and Young and the National Foundation for Teaching Entrepreneurship (NFTE) and he has received the key to the city from the Mayor of Washington DC.