David Castagna

Cowen Group, Inc. provides investment banking for small to midsized companies in the alternative energy, consumer health care, media, technology, and telecommunications industries. It offers mergers and acquisitions advice, securities underwriting, equity offerings, private equity placements, and market-making. The company was founded in 1918 and is headquartered in New York, NY.

Founded in 1998, Thomas Weisel Partners (TWP) is a broker/dealer headquartered in San Francisco with offices in New York City, Boston, Denver, Colorado and Palo Alto, California. The firm is a subsidiary of Thomas Weisel Partners Group, Inc. (Nasdaq: TWPG), a San Francisco-based investment banking firm. Their ultimate parent is Stifel Financial Corp. (NYSE: SF). TWP's investment banking, brokerage and equity research divisions serve emerging growth companies and institutional investors around the world. They are a member of the NYSE, the SIPC and FINRA. TWP specializes in the growth sectors of the economy with a particular focus on the consumer, energy, healthcare, Internet, media/telecommunications, metals/mining and technology sectors. Within the consumer sector, the firm focuses on: financial products, gaming/lodging, interactive market services, lifestyles/sports retailers, restaurants and hardlines and softlines retailing. TWP's global energy research is provided by analysts in three countries and covers the following trends: (1) fast-growing oil and natural gas producers in North America and worldwide (2) domestic and international energy service companies and (3) alternative energy technology and resource developers. Within the healthcare sector, TWP focuses on: biotechnology, diagnostics, healthcare information technology, pharmaceutical services, life science technology, medical devices and specialty pharmaceuticals. The firm's interest in the Internet, media and telecommunications sector include: Internet services, media, broadcasting and telecommunications services. Their focus within the metals and mining sector include: base metals, gold, precious metals and uranium. TWP's technology research focuses on: (1) applied technologies (2) communications components (3) core and wireless communications equipment (4) IP networking communications equipment (5) electronic supply chain (6) enterprise hardware (7) information and financial technology services (8) semiconductor capital equipment (9) broadline and specialty semiconductors (10) applications and communications software and (11) infrastructure software. TWP also provides value-added equities analysis across a variety of sectors including: industrials, financials, consumer, technology and healthcare.

Piper Jaffray Cos. is an investment bank and asset management firm, which engages in the provision of equity and debt capital markets products; public finance services; financial advisory services; equity research and institutional brokerage; fixed income institutional brokerage; and asset management services. It operates through Capital Markets and Asset Management segment. The Capital Markets segment focuses on investment banking and institutional sales, trading and research services for various equity and fixed income products. The Asset Management segment gives traditional asset management business and seed investments in registered and private funds. The company was founded in 1895 and is headquartered in Minneapolis, MN.