Geoffrey Hsu

A subsidiary of Lehman Brothers Holdings, Inc., Lehman Brothers, Inc. is a broker/dealer headquartered in New York City. They provide global equity and fixed research. The equity research department covers more than 100 sectors. They use a fundamental, quantitative, strategic and tactical research approach. In addition to these Lehman has also developed special products, such as 10 uncommon values and 10 uncommon eurovalues.

OrbiMed Advisors LLC is an independent, SEC-registered investment advisor and hedge fund manager headquartered in New York City. It was founded by Sven Borho and Carl Gordon in 1989. The firm provides discretionary investment management services to US and non-US public and private funds.

Part of OrbiMed Advisors LLC, OrbiMed Capital LLC is a private company based in New York, NY.

The Biotech Growth Trust Plc is a closed-end investment trust. Its objective is to seek capital through investment in the worldwide biotechnology industry principally by investing in emerging biotechnology companies. The company was founded on May 20, 1997 by Christopher Thomas Evans and is headquartered in London, the United Kingdom.

OrbiMed Advisors Private Equity (OrbiMed Advisors Private Equity) is a private equity and venture capital subsidiary of Orbimed Advisors LLC founded in 1993 by Samuel D. Isaly. The firm is headquartered in New York and it has additional offices in San Francisco, Mumbai, Shanghai, Herzliya, Hong Kong and London.