William Werdenberg

Goldman Sachs International (GSI) is the Great Britain-based, wholly-owned brokerage subsidiary of Goldman Sachs Group UK Ltd., ultimately held by The Goldman Sachs Group, Inc. (NYSE: GS) in the US. The firm was founded in 1988 and formerly known as Trushelfco Ltd. Headquartered in London, GSI provides prime brokerage, securities lending, futures services and financing services for a range of clients such as corporations, financial institutions, governments and high-net worth individuals.

RBC Capital Partners Ltd. is a Venture Capital firm, a subsidiary of RBC Dominion Securities, Inc. founded in 1900. RBC Capital Partners Ltd. is headquartered in Toronto, Canada with offices across the globe.

Cadent Energy Partners LLC (Cadent Energy Partners) is a private equity firm founded in 2002 by Paul G. McDermott and David Coppe. The firm is Headquartered in New York.

PolyFlow, Inc. manufactures spoolable composite reinforced polymer pipe products for the oil and gas industry. It offers downhole tubing solutions that include velocity strings and submersible tubing; and flow lines solutions, such as gathering and flow lines, injection lines, disposal lines, and rehabilitation of pipelines. The company was founded in July 2002 and is headquartered in Oaks, PA.

Premium Oilfield Services LLC enagges in the provision of specialized services and equipment rentals to the oilfield industry. Its services include rental tools, fishing, wireline, whipstock, thru tubing, and rotating control devices rental. The firm supplies and supports the oilfield market with tools and personnel. The company was founded on February 2012 and is headquartered in Houston, TX.

Probe Holdings, Inc. engages in the design, manufacture, and sale of measurement tools and systems. It products is used for formation evaluation, well integrity assessment, and productivity determination. The company was founded in 1995 and is headquartered in Missouri City, TX.

Probe Technology Services, Inc. designs, manufactures, and sells measurement tools and systems used in formation evaluation, and well integrity assessment and productivity determination for the energy industry worldwide. It offers cased hole tools, such as corrosion logging, cement integrity logging, thru casing evaluation logging, gamma ray and CCL logging, memory logging, surface acquisition systems, and auxiliary equipment and accessories; and open hole tools, including nuclear, resistivity, acoustic, and borehole geometry logging. The company was founded in 1994 and is headquartered in Houston, TX.