Signal Lake Venture Fund

Spectrum Equity Investors, LP, based in Boston, is a trusted provider of growth capital and strategic guidance to established companies that are leaders in their respective markets. With a focus on partnering with market-leading businesses, Spectrum Equity leverages its expertise to help companies achieve their growth objectives and maximize their potential. Generated from their website's infomation

Heritage Partners is one of the leading private investment firm specializing in the acquisition and equity-based recapitalization of private, family owned businesses. Since 1987, the Partners have assembled a diversified portfolio of nearly 50 investments with revenues in the billions of dollars. Heritage Partners portfolio is divided into three funds, the Heritage Fund I, Heritage Fund II and Heritage Fund III. The firm's fundamental objective is to invest preferred and common stock, on a minority or majority basis, in mature, successful companies with revenues of $50 to $500 million. Industries of particular interest include healthcare, consumer products, food and beverage, distribution, light manufacturing and media. Heritage Partners is headquartered in Boston.

MPM Capital is one of the largest life science venture investors throughout the world. It invests in biotechnology, pharmaceutical and medical technology companies that provide medical products and services to the health care industry. The company manages the MPM BioVentures and MPM BioEquities family of funds. MPM Capital offers investment services to the public and private markets. The company provides services to various clients, including Alsius Corporation, Archus Orthopedics, Cardiac Dimensions and EndoGastric Solutions. Its MPM BioEquities is a biotechnology investment fund designed to provide investors with a superior rate of return through investments in public and private biotechnology companies in the United States. MPM Capital maintains a location in Boston.