Darren R. Scandone

Clean Harbors Environmental Services, Inc. provides environmental, energy and industrial services. It is a re-refiner and recycler of used oil and a provider of parts washers and environmental services to commercial, industrial and automotive customers. The company is headquartered in Norwell, MA.

Virtu ITG Holdings LLC engages in the provision of financial technology services. It operates through the following segments: Executive Services, Workflow Services, Workflow Technology, and Analytics. The Execution Services segment includes liquidity matching through POSIT, self-directed trading using algorithms, portfolio trading and single stock sales trading desks providing execution expertise, and futures and options trading. The Workflow Technology segment offers trade order and execution management software applications in addition to network connectivity. The Analytics segment covers tools enabling portfolio managers and traders to improve pre-trade, real-time and post-trade execution performance; portfolio construction and optimization decisions; and securities valuation. The company was founded by Chris A. Hynes on July 22, 1983 and is headquartered in New York, NY.

Motorola, Inc. provides seamless mobility products and solutions across broadband, embedded systems and wireless networks. Motorola is engaged in providing technologies, products and services for mobile phones. Its portfolio includes wireless handsets, wireless accessories, digital entertainment devices, wireless access systems, voice and data communications systems, and enterprise mobility products. The company operates through three business segments, including Mobile Devices Segment, Home and Networks Mobility Segment and Enterprise Mobility Solutions Segment. The Mobile Devices segment designs, manufactures, sells and services wireless handsets with integrated software and accessory products, and licenses intellectual property. The Home and Networks Mobility segment designs, manufactures, sells, installs and services: (i) digital video, Internet Protocol video and broadcast network interactive set-tops, end-to-end video delivery systems, broadband access infrastructure platforms, and associated data and voice customer premise equipment to cable television and telecom service providers, and (ii) wireless access systems, including cellular infrastructure systems and wireless broadband systems, to wireless service providers. The Enterprise Mobility Solutions segment designs, manufactures, sells, installs and services analog and digital two-way radio, voice and data communications products and systems for private networks, wireless broadband systems and end-to-end enterprise mobility solutions to government and public safety agencies, as well as retail, energy and utilities, transportation, manufacturing, healthcare and other commercial customers. Motorola was founded on September 25, 1928 and is headquartered in Schaumburg, IL

The MacGregor Group, Inc. provides trade order systems to institutional fund companies. It facilitates straight-through trade processing for investment management firms, brokers, hedge funds and other financial services companies. The company's XIP order management network helps buy-side and sell-side traders with portfolio management, trade order processing, compliance, broker connectivity, network testing, post-trade services and other services. The MacGregor Group was founded in 1991 and is located in Boston, MA.

NxStage Medical, Inc. is a medical technology company, which develops, manufactures, and markets products for the treatment of ESRD and acute kidney failure. It operates through the following business segments: System One, In-Center, and Services. The System One segment engages in the sale and rental of the System One and PureFlow SL equipment and the sale of disposable products in the home and critical care markets. The In-Center segment sells blood tubing sets and needles for hemodialysis primarily for the treatment of ESRD patients at dialysis centers and needles for apheresis. The Services segment includes revenues from dialysis services provided to patients at its recently opened NxStage Kidney Care dialysis centers. The company was founded by Jeffrey H. Burbank in December 1998 and is headquartered in Waltham, MA.