Mark Greathouse is managing director of Mid-Atlantic Angels, LLC, an angel investment group headquartered in Frederick, MD that features a portfolio representing $1.4 million investment. He is also president of GTG Solutions, LLC, a professional services firm. Greathouse is an online venture capitalization pioneer and serial entrepreneur who has guided teams through hundreds of decisions involving investing money and time. He served as an executive and director in the very first privately-held online private equity marketplace in the 1990s. He draws from more than 50 years of business experience and expertise (30 years at executive-levels) with dozens of enterprises serving domestic and international clients across a broad set of industries while helping client firms achieve impressive revenue growth multiples. He is a 1997 graduate of the prestigious Mindshare executive program. Greathouse has served on several corporate boards of directors and has been an award-winning leader in advancing agendas for nonprofit business and community organizations. He is on the Board of Directors of Heart a Cancer Fighter and attends Frederick Christian Fellowship Church. He holds a BA from University of Maryland and MBA from The American University.