Third Security, LLC Closes $250 Million Private Equity Fund
August 1, 2007

RADFORD, Va, August 1, 2007 /PRNewswire/ - Third Security, LLC announced today the closing of its sixth and largest investment fund, New River Management V, LP.

NRM V, which closed at $250 million, has invested and will continue to invest in select public and private companies. The general partner, Third Security Capital Partners V, LLC, is managed by Third Security, LLC.

NRM V has already announced investments or commitments to invest in several companies, including Clinical Data, Inc., Cyntellect, Inc., Halozyme Therapeutics, Inc. and Intrexon Corporation.

Randal Kirk, Chief Executive Officer of Third Security, stated, “With this fund, we have expanded our base of limited partners as well as our ability to participate in the actualization of many promising new technologies. NRM V will be managed by the same team that has contributed to the success of our previous five funds. By continuing to apply our exacting standards for investing and our hands-on management approach, we expect to achieve success for the fund’s investors and portfolio companies.”

About Third Security, LLC
Third Security is an independent private equity and venture capital firm formed in 1999 to manage investments in public and private companies. Third Security evaluates opportunities in a wide range of industries, but principally focuses on emerging through late-stage investments in life-sciences and information technology. For more information, visit the firm’s Website at www.thirdsecurity.com.

Contact: 
   Carol S. Colby
   Director of Communications
   540-633-7900
   carol.colby@thirdsecurity.com