John P. Grayken is an Irish-American businessman which has an estimated net worth of $5.15 billion as of February 2015.
John P. Grayken worked at Keystone Group, L.P. and Morgan Stanley before forming his own firm, Lone Star Funds in 1995. He also serves as the Director of Patriot Equities Corporation and Director of Korea Exchange Bank.
John P. Grayken graduated from University of Pennsylvania in and received his M.B.A. at Harvard Business School in 1982.
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Mr. John P. Grayken is the Founder, Managing Partner, Chief Executive Officer, and Chairman of Lone Star Funds. He founded the firm in 1995. Mr. Grayken has served as a key participant in investor relations, sourcing, negotiating, and structuring investments and has been the primary individual responsible for formulating investment strategy for the Funds. In addition, Mr. Grayken is the owner of Hudson. Previously, he was employed at Keystone Group, L.P. Prior to that, he worked at Morgan Stanley. Mr. Grayken serves as a Director of Patriot Equities Corporation. He served as a Director of Korea Exchange Bank since August 30, 2003. Mr. Grayken holds an M.B.A. from Harvard Business School in 1982 and holds a B.A. degree in Economics from the University of Pennsylvania.
(source = http://www.bloomberg.com/research/stocks/private/person.asp?personId=80606&privcapId=21543 )