Natan Tiefenbrun

Turquoise Trading Ltd. provides electronic execution services to buyers and sellers of pan-European equities, delivering differentiated value throughout the trading process. The firm's multi-lateral trading facility (MTF) operates uniformly across 15 European markets with a unique market model, a fully risk-managed clearing solution and efficient economics. Its MTF's integrated market combines dark and visible orders to increase execution and price improvement for small orders, whilst minimizing information leakage and market impact for larger, institutional-size orders. Turquoise technology delivers high throughput and ultra-fast response times to the most demanding trading specifications in the world.

Linn Products Ltd. manufactures high fidelity and audio equipment. The company was founded by Ivor Tiefenbrun in 1973 and is headquartered in Eaglesham, the United Kingdom.

Part of Cboe Global Markets, Inc., Cboe Europe Ltd. is a leading pan-European equity and derivatives exchange and clearing operator. The company, founded in 2008, is based in London, UK. Cboe Europe offers a range of execution mechanisms to allow clients to trade in a way that best suits them, with a focus on innovative, pan-European solutions that simplify cross-border equities trading. The British company provides liquidity in more than 6,000 equities, exchange traded products, and depository receipts across 18 major European countries, and offers competitively priced pan-European equities market data and benchmark indices. Cboe Europe also provides efficient, cost-effective pan-European trade reporting services, including the leading approved publication arrangement for equities, known as BXTR.

Part of Nomura Holdings, Inc., Instinet, Inc. provides financial services. The company is based in New York, NY.

Part of London Stock Exchange Group plc, Turquoise Global Holdings Ltd. is a company that provides security trading services. The company is based in London, UK and was founded in 2009.

XConnect Global Networks Ltd. provides plug and peer voice over Internet protocol interconnection services. It enables its customers to capitalize on network and technology investments through the delivery of IP voice, video and unified communications across disparate networks and platforms. The firm offers scalable interconnection solutions that will facilitate seamless interoperability, routing and interworking between multiple next generation networks. The company was founded by Eli Katz in 2004 and is headquartered in London, the United Kingdom.