Mark Ein

Mark David Ein (born December 31, 1964) is an American venture capitalist and sports team owner. A native of Maryland, he earned a degree in economics from the Wharton School and a MBA from Harvard Business School. Ein worked for The Carlyle Group, Brentwood Associates, and Goldman Sachs before founding Venturehouse Group in 1999. A lifelong enthusiast of tennis, he played in a few Association of Tennis Professionals (ATP) tournaments, chairs the DC Open tournament, and founded the World TeamTennis (WTT) team Washington Kastles.

Ein additionally owns the Washington City Paper, the Washington Justice of the Overwatch League (OWL), and is a limited partner of the Washington Commanders of the National Football League (NFL). He is a member of the Federal City Council, World Economic Forum, Gridiron Club, and chair of the President's Export Council since 2023.

Career
Ein was born on December 31, 1964, in Chevy Chase, Maryland. He earned a degree in economics from the Wharton School in 1987 a MBA from Harvard Business School in 1992. He worked for The Carlyle Group, Brentwood Associates, and Goldman Sachs before founding Venturehouse Group in 1999. A lifelong enthusiast of tennis, Ein founded the Washington Kastles of World TeamTennis (WTT) in 2008 and is a board member of the United States Tennis Association (USTA). He also played in a few ATP doubles tennis tournaments and once held an ATP ranking of 1098, doing so in 2015 at age 46. He was inducted into the USTA Mid-Atlantic Tennis Hall of Fame in 2012.

Ein bought the Washington City Paper in 2017 and became chairman and CEO of the DC Open tennis tournament in 2019. He is the chairman of the board for Kastle Systems, a security company, and CEO of Capitol Investment Corp. He also founded the Washington Justice of the Overwatch League in 2018. Ein is a member of the Federal City Council, World Economic Forum, and the Gridiron Club. In 2023, he was a part of an investment group led by Josh Harris that bought the Washington Commanders of the National Football League (NFL) for $6.05 billion. The deal was the highest price ever paid for a sports team. In 2009, D.C. mayor Adrian Fenty presented him with the Key to the City for his success with the Washington Kastles. Ein became a Washington Business Hall of Fame laureate in 2018. In 2023, he was appointed by U.S. president Joe Biden to chair of the President's Export Council, a group within the International Trade Administration that serves as the national advisory committee on the topic.

Personal life
Ein is Jewish; his mother is a Holocaust survivor. He and businessman Josh Harris have been close friends since elementary school, with them attending Wharton and Harvard Business School together and sharing beach houses during their time on Wall Street. Harris invited Ein to join his investment group that purchased the Commanders, their favorite team growing up, in 2023. Ein was honored for "Outstanding Public Service in Professional Sports" by the Jefferson Awards Foundation in 2013. He was an executive producer of the 2008 documentary film Kicking It.

Ein married Sally Stiebel in September 2013. The wedding had a live performance of Y.M.C.A. by the Village People and was attended by over 350 guests, including Mark Warner, Ted Leonsis, Raul Fernandez, Vernon Jordan, Valerie Jarrett, Debra Lee, Gene Sperling, Larry Summers, David Bradley, Adrian Fenty, Jack Evans, Murphy Jensen, Sam Kass, Capricia Marshall, and Mitchell Rales. They spent their honeymoon at Lake Como in Italy and reside in the Georgetown district of Washington, D.C.