Denis Pyatchanin

Stifel, Nicolaus & Co., Inc. (Stifel) is a dual-registered broker-dealer and investment adviser headquartered in St. Louis, Missouri. Founded in 1890, the firm is a subsidiary of Stifel Financial Corp. (NYSE: SF), a financial service holding company. Stifel provides full-service brokerage and investment advisory services to individuals and their families, institutions and businesses, and financial advisors.

Needham & Co. LLC (Needham) is a registered investment advisor and broker/dealer headquartered in New York City. The firm was founded in 1985 and is a wholly-owned indirect subsidiary of The Needham Group, Inc. Needham provides corporate and institutional clients with high quality research, corporate access, capital markets and trading execution services in both the public and private markets, with an emphasis on growth companies.

Manulife Investment Management (US) LLC (Manulife IM-US) is a SEC-registered investment advisor headquartered in Boston, Massachusetts. The firm was founded in 1968 and is a subsidiary of John Hancock Subsidiaries LLC, ultimately held by Manulife Financial Corp. (NYSE, TSE: MFC), a Canadian-based financial services firm. Manulife IM-US manages assets for a variety of institutional and other types of clients, such as public and private pension funds, foundations, mandatory provident funds outside the US, financial institutions, investment trusts, separately managed account clients, and high net-worth individuals. The firm also manages registered funds, which includes UCITS, US and Canadian open- and closed-end mutual funds and privately-offered unregistered investment funds.