John Sadowsky

The Options Clearing Corp. provides equity derivatives clearing services. It provides central counterparty clearing and settlement services to stock exchanges and trading platforms for options, financial futures, security futures and securities lending transactions. The company was founded in 1973 and is headquartered in Chicago, IL.

NASDAQ OMX BX, Inc. provides securities exchange services. It offers electronic and floor-based trading solutions to financial firms, dealers, investment institutions and listed public companies. The firm’s products include automated price improvement; Boston Exchange automated communication and order-routing network, BEACON REMOTE and execution quality report. The company was founded in 1834 and is headquartered in Boston, MA.

Part of MarketAxess Holdings, Inc., MarketAxess Corp. provides financial information exchange test-certification services. The company is based in New York, NY.

Sigma Capital Partners LLC (Sigma Capital Partners) is a private equity firm founded in 2003 by Thom Waye. The firm is headquartered in New York.

The Depository Trust & Clearing Corp. provides clearance, settlement and information services. The firm offers institutional trade processing, clearing, settlement and asset, wealth management, repository and derivatives and data services. The company was founded in 1999 is headquartered in New York, NY.

Cboe Exchange, Inc. provides options exchange services. It trades equity options, security index options, options on exchange traded notes and products, binary options, one-week and quarterly options, long-term equity anticipation securities options, and flexible exchange options. The firm also provides information on various stock and options trading strategies, options trading tools, stock and option quotes and data; and options information and education. Additionally, they offer access to product information, conference notices, portfolio management tools, and educational materials for institutional investors and products and strategies for advisors to protect client’s portfolios. The company was founded in 1973 and is headquartered in Chicago, IL.

Part of MarketAxess Holdings, Inc., Trading Edge, Inc. is an American company that provides online brokerage services. The company is located in the US. Trading Edge was acquired by MarketAxess Holdings, Inc. on March 23, 2001 for $46.33 million.

NT Corp. produces electronic navigation equipment for marine, avionics, agricultural, recreational and other emerging land-based markets. The company is headquartered in Acton, MA.

Founded in 1939, Pershing LLC is a broker/dealer headquartered in Jersey City, New Jersey. The firm is a subsidiary of the Bank of New York Mellon Corp. (NYSE: BK). The firm helps financial services firms and advisors succeed by providing the technology, operational, trading, investment and practice management solutions they need to serve investors. Pershing offers securities processing, trading and operations management, investment technology, asset-gathering solutions and practice management support. The firm serves a wide range of financial organizations including: banks, discount brokerages, full-service brokerages, registered investment advisors, independent contractors, institutional firms, global firms and small- to mid-sized firms. Pershing also offers financial products including annuities, mutual funds and money funds, as well as business tools, cash management services, investor and lending services, retirement products and wealth management. In addition, they offer trading and execution services in listed and OTC securities, fixed-income securities and mutual funds.

American Bankers Association, Inc. represents, assists and provides support services to banks of different sizes and charters. Its membership includes community, regional, and money center banks and holding companies, as well as savings associations, trust companies, and savings banks. The company was founded in 1875 and is headquartered in Washington, DC.

FMR LLC engages in the provision of financial and investment services. It offers financial planning and advice, wealth management, retirement plans, trading and brokerage services, and investment products. The company was founded by Edward C. Johnson II in 1946 and is headquartered in Boston, MA.

Part of Lehman Brothers Holdings, Inc., Lehman Brothers Canada, Inc. is a Canadian company.

CBOE Stock Exchange LLC engages in electronic trading of securities. It trades listed, over-the-counter securities, and exchange traded funds. The company was founded in March, 2007 and is headquartered in Chicago, IL

Virtu Americas LLC is an SEC-registered broker/dealer headquartered in New York City and was founded in 2012. The firm is a direct subsidiary of Virtu Strategic Holdings LLC and their ultimate parent is Virtu Financial, Inc. (NASDAQ: VIRT). Virtu provides brokerage services to their clients.

SenaHill Investment Group LLC (SenaHill Investment) is a Venture Capital subsidiary of SenaHill Partners LP founded in 2013. The firm is headquartered in New York.