J. Carter Robinson

Argonaut Private Equity LLC (Argonaut Private Equity) is a private equity firm founded in 2002 by Jason Martin and George B. Kaiser. The firm is headquartered in Tulsa, Oklahoma.

• Downing Wellhead Equipment LLC provides oil and gas field machinery and equipment. The firm’s products include wellhead and multi-bowl systems, frac equipment, and fs completion systems. Its services include equipment repair, frac support and maintenance, valve service and greasing, and customer property management. The company was founded in 1980 and is headquartered Oklahoma City, OK.

Argonaut Private Capital LP offers investment advisory services. The private company is based in Tulsa, OK. Steve R. Mitchell has been the CEO of the company since 2016.

JAC Holding Enterprises, Inc. operates as a holding company. The company is headquartered in U.S.

QRC Valve Distributors LLC is a company that provides highly responsive master distribution services for valves. The company is based in Stafford, TX. The company offers a deep selection of valves and ensure timely delivery to support their clients and customers. The company was founded in 2016. Jesse Jones has been the CEO of the company since 2017.

SEF Energy LLC operates as an investment holding company. It delivers returns through methodical capital allocation, asset management and leadership. The company was founded in 2014 and is headquartered in Oklahoma City, OK.

Mammoth Carbon Products LLC is a pipeline products distribution company. Its products include electric resistance weld, double submerged arc welded, seamless and spiral weld pipes. The firm serves petrochemical and water well market segments. The company was founded in 2014 and is headquartered in Scottsdale, AZ.

Otis Eastern Service LLC engages in the construction and maintenance of oil and gas pipeline systems. It provides greenfield and loop line constructions, in-situ replacements, remediation, row stabilization, slip repairs, and upgrades and testing. The company was founded in 1936 and is headquartered in Wellsville, NY.

Kineta, Inc. engages in the development of novel immuno-therapies. It develops a pipeline of therapies that address critical unmet patient needs in oncology, chronic pain and biodefense. The company was founded by Shawn P. Iadonato and Charles L. Magness in 2008 and is headquartered in Seattle, WA.

Applied Industrial Machining LLC provides precision machining services. Its services include precision cnc machining, contract manufacturing, magnetic particle testing and welding. The company was founded by Robert Gilson and Mike Drain in 1986 and is headquartered in Oklahoma City, OK.

American Cementing LLC provides cementing and acidizing products. The company is headquartered in Tulsa, OK.

Mark Young Construction, Inc. provides refrigeration and commercial construction services. Its services include multi-plex refrigeration systems, conventional, four-pipe kool gas defrost system piping, refrigeration control, concrete, rough and finish carpentry, and mechanical and plumbing. The company was founded in 1989 and is headquartered in Frederick, CO.

Part of Miratech Group LLC, Miratech Holdings, Inc. operates as a holding company. The company is based in Oklahoma City, OK.

McNellie's Group is a restaurant group that owns and operates eleven restaurant concepts in an unspecified location. The private company is based in Tulsa, OK. The company's restaurants include Fassler Hall, Dust Bowl, Yokozuna, Dilly Diner, El Guapo's, McNellie's Pub, The Tavern, and The Bond Event Center.

Gibson, Dunn & Crutcher LLP provides legal services. It offers services to labor, employment, entertainment and media law, toxic torts and other environmental services. The company was founded in 1890 and is headquartered in Los Angeles, CA.

Yulex Corp. manufactures and distributes specialty natural rubber materials to consumers and brands. Its products include Guayule, Russian Dandelion, and Yulex Pure. The company was founded by Daniel Swiger and Jeffrey A. Martin in 2000 and is headquartered in Phoenix, AZ.

Global Client Solutions LLC provides account management services. The firm offers consumer services and debt settlement support. The company was founded in 2003 and is headquartered in Tulsa, OK.

StepStone Group Holdings LLC operates as a alternative investment manager. It specializes in venture capital and private equity. The company is headquartered in La Jolla, CA.

Southwest United Industries, Inc. engages in the provision of metal finishing solutions, aviation component repair, and overhaul services. The company was founded on December 28, 1955 and is headquartered in Oklahoma City, OK.

Green Hills Software, Inc. develops and supplies compilers, software development tools and real-time operating systems. It offers platform solutions, operating systems, hypervisor, OS middleware, development tools, and processor probes. The company was founded by Daniel D. O'Dowd in 1982 and is headquartered in Santa Barbara, CA.

S&R Compression LLC engages in fabrication and leasing of non conventional gas products. The firm specializes in reciprocating compressor packages for gas lift applications and rotary screw packages for vapor recovery. The company is headquartered in Tulsa, OK.

Aimbridge Hospitality LLC operates as an independent hotel management and investment firm. It offers hotel management; resort and luxury, acquisition and development; capital oversight, receivership and interim management, asset management, and consulting services. The company was founded by Les Bentley and Dave Johnson in 2003 and is headquartered in Plano, TX.

Part of FloWorks International LLC, Major Sourcing LLC is a valve automation, integrator, and distributor, primarily focused on the power industry. The company is based in Sayreville, NJ. Major Sourcing was acquired by FloWorks International LLC on July 28, 2015.

2929 Entertainment LP owns and operates theatres. It produces and finances movies through two production companies such as 2929 Productions and HDNet Films. The company was founded by Mark Cuban and Todd R. Wagner in 2003 and is headquartered in Los Angeles, CA.

DMB Pacific Ventures LLC engages in the provision of real estate investment and development services. Its projects include Martis Camp, Tejon Mountain Village, Marblehead Coastal, and Redwood City Saltworks. The company was founded in 2012 and is headquartered in Phoenix, AZ.

360 Degree Solar Holdings, Inc. was founded in 2005. The private company is based in Fremont, CA. The company is focused on renewable energy, specifically solar power and wind turbines. The company offers solutions for configuring the wiring of both systems to prevent damage. The company's partner, Payday Depot, provides online payday loans. The company's mission is to bring prosperity and freedom to everyone's life. The company aims to build a system where people do not depend on money.

Industrial Electrical Sales of Tulsa, Inc. wholesales electrical equipment and wiring supplies. The company was founded by Hans Norberg in 1969 and is headquartered in Tulsa, OK.

Global Technology Partners LLC is a technology company. The private company is based in Boston, MA.

Specific Systems LLC provides air-conditioning, heating, ventilating and pressurization systems. Its customers include the oil and gas, refineries and power plants, mining and resource extraction, pulp and paper mills industries. The company was founded in 1974 and is headquartered in Tulsa, OK.

Petroplex Acidizing, Inc. provides acidizing and chemical treatments for oil, gas and injection wells. Its products include Petrosol X-25, anti-sludge systems, petrol and custom acid blends. The firm also provides acidizing, acid-frac transports, pressure pumping and pump down, pressure testing, step rate injection, backside monitoring services. The company was founded by Larry D. Foster in 1981 and is headquartered in Midland, TX.