David Lawrence Gremmels

Catapult Capital Management LLC (Catapult Capital) is a hedge fund manager headquartered in New York City. The firm was founded in 2006 and is a subsidiary of Millennium International Management LP, ultimately owned by MLM Trust B. Catapult Capital manages assets on behalf of institutional clients and private investors.

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.

Citadel Advisors LLC is a SEC-registered investment advisor and hedge fund manager headquartered in Miami, Illinois. The firm was founded in 1990 by Kenneth Griffin and is a wholly-owned by Citadel Advisors Holdings LP, ultimately held by GFH HFEVA LLC. Citadel Advisors manages private investment funds that are offered exclusively to sophisticated investors.

Cowen & Co. LLC is a SEC-registered broker/dealer headquartered in New York City. The firm was founded in 2004 and is a subsidiary of Cowen Holdings, Inc., ultimately owned by The Toronto-Dominion Bank (TSE: TD) in Canada. Cowen & Co. offers industry-focused investment banking for growth-oriented companies, domain knowledge-driven research and a sales and trading platform for institutional investors. Their institutional sales and trading business serves both equity and fixed-income clients. Sales and trading execution platform is structured around the following key verticals: (1) healthcare (2) technology, telecommunications and media (TMT) (3) REITs and financials (4) aerospace and defense (5) consumer and (6) alternative energy.