Stephen Schuler

Founded in 2007, GETCO Execution Services LLC is an SEC-registered broker/dealer located in New York City. The firm is a subsidiary of GETCO Trading LLC and their ultimate parent is KCG Holdings, Inc. (NYSE: KCG). ETCO Execution Services offers an automated trading system that is designed to allow subscribers to interact directly with GETCO liquidity. The firm offers an array of trading and execution services for their clients. GETCO Execution Services does not provide any internal research.

GETCO Europe Ltd. provides electronic liquidity services. It is a member of several European Regulated Markets and Multilateral Trading Facilities The company was founded in 2003 and is headquartered in London, GB.

Getco Holding Co. LLC provides electronic trading and technology services. It operates as a trading stamp promotion and redemption. The company was founded by Daniel V. Tierney and is headquartered in Chicago, IL.

Virtu GETCO LLC provides electronic trading and technology services. It provides electronic market-making and liquidity provision, involves both buying and selling securities to provide two-sided markets on exchanges. The company was founded by Stephen Schuler and Daniel Vincent Tierney in 1999 and is headquartered in Chicago, IL.

Virtu KCG Holdings LLC operates as an independent securities company, which offers services designed to address trading needs across asset classes, product types and time zones. It operates through the following segments: Market Making, Global Execution Services and Corporate and other. The company was founded on December 26, 2012 and is headquartered in New York, NY.

Knight Capital Group, Inc. is a global financial services firm, which provides access to the capital markets across multiple asset classes to a broad network of clients, including buy and sell side firms, dealers, brokers, institutions, and corporations. It operates business through four segments: Market Making, Institutional Sales and Trading, Electronic Execution Services and Corporate and Other. The Market Making segment consists of market making in global equities and listed domestic options. It includes client, and to a lesser extent, non-client electronic market making activities in which they operate as a market maker in equity securities. The Institutional Sales and Trading segment includes global equity, exchange traded funds and fixed income sales and trading; reverse mortgage origination and securitization; capital markets; and asset management activities. Its business consists of execution and facilitation equities and fixed income transactions as agent on behalf of institutional clients, and they commit capital on behalf of its clients when needed. The Electronic Execution Services segment offers access via its electronic agency-based platforms to markets and self-directed trading in equities, equity options, fixed income, foreign exchange and futures contracts. The Corporate and Other segment invests in strategic financial services-oriented opportunities, allocates, deploys and monitors all capital, and maintains corporate overhead expenses and all other income and expenses that are not attributable to the other segments. The company was founded in 1995 and is headquartered in Jersey City, NJ.

Wicklow Capital Inc (Wicklow Capital) is a venture capital firm founded in 2004 by Daniel Tierney and Stephen Schuler. The firm is headquartered in Chicago, Illinois.