Stephen J. Tyde

IT Group, Inc. engages in hazardous waste management services. It operates its business through the following segments: Government. Commercial, and International Services. The Government Services segment provides services to the federal government in the areas of Hazardous, Toxic and Radiological Waste remediation, Outsourced Services for renovation, design/build and facilities management, and Civil Works. The Commercial Services segment provides consulting, engineering and construction services to commercial clients, primarily in the petroleum, chemical, manufacturing, transportation, telecommunication, utility and solid waste industries through four business lines: Commercial Services, Solid Waste, Transportation and Telecommunication, and Real Estate Restoration. The International Services segment provides infrastructure and environmental services to multi-national and foreign-based clients with principal operations in Canada, Europe, and Australia. The company is headquartered in Monroeville, PA.

Texaco, Inc. explores and produces oil and natural gas. It engages in the worldwide exploration, production and marketing of crude oil, natural gas, and petroleum products. The company was founded in 1902 and is headquartered in San Ramon, CA.

CITGO Petroleum Corp. engages in refining, transporting, and marketing of transportation fuels, lubricants, and petrochemicals products. It offers retail gasoline, diesel fuel, jet fuel, lubricants, petrochemicals, and other petroleum-based industrial products. The company was founded by Henry L. Doherty in 1910 and is headquartered in Houston, TX.

PDV America, Inc. explores and markets petroleum products. It transports gasoline, diesel, jet fuel, petrochemicals, lubricants, asphalt and waxes through its subsidiary CITGO. The company was founded in 1986 and is headquartered in Tulsa, OK.

Koch Industries, Inc. engages in the manufacture and trade of chemical products. It operates in variety of industries such as polymers and fibers, fertilizers, electronics, automotive components, forest and consumer products, minerals, glass, process and pollution control systems, refining and biofuels, commodity trading, investments, and ranching. The company was founded by Frederick Chase Koch in 1940 and is headquartered in Wichita, KS.

Wiltel Communications Group, Inc. provides customized communications solutions to enterprises, and federal government. The company was founded by Robert D. Williams and is headquartered in Tulsa, OK.

Part of ADDvantage Technologies Group, Inc., Tulsat Corp. is a development stage company. The company is based in Broken Arrow, OK. Tulsat was acquired by ADDvantage Technologies Group, Inc. on September 30, 1999. The company was founded by David E. Chymiak, Kenneth A. Chymiak.

Davis, Tuttle Venture Partners is an independent venture capital firm founded in 1986 by Barry Davis. The firm is headquartered in Tulsa, Oklahoma with an additional office in Houston, Texas.

De Facto Communications Ltd. provides public relations and communications consultancy services in life science, healthcare, medical education and clinical trials marketing. The company was founded in 1989 by Richard Anderson and Kevin Payne. It is headquartered in London, UK.

Vanguard Car Rental USA, Inc. provides car rental services. It sells auto liability insurance and rents infant car seats, cell phones, and ski racks. The firm also provides vehicles and service to leisure, business and local customers. The company was founded in 2003 and is headquartered in Tulsa, OK.

Oklahoma Center for the Advancement of Science & Technology is the Oklahoma's technology-based economic development agency. The company is headquartered in Oklahoma City, OK.

Oklahoma Equity Partners LLC (Oklahoma Equity Partners) is a private equity/venture capital firm founded in 2003. The firm is headquartered in Oklahoma.

Avansic, Inc. provides digital forensics services to the business and legal communities. The firm offers e-discovery and digital forensics services to attorneys, litigation support teams and business communities across the nation. It has offices in Dallas, Houston, Little Rock, New Orleans, St. Louis and Tulsa. The company was founded in 2004 by Gavin W. Manes and is headquartered in Tulsa, OK.

Tokenex LLC provides tokenization solutions for one-time, recurring, and archival transaction data. It offers TokenEx, an enterprise data security platform that provides solutions for coupling tokenization, encryption, and key management for ensuring secure data. The company was founded by Jerry W. Dawkins and Alex Pezold in 2010 and is headquartered in Edmond, OK.

Part of Energy Transfer LP, Rose Rock Midstream GP LLC operates and manages a diversified portfolio of midstream energy assets. The company is based in Tulsa, OK.

Part of ADDvantage Technologies Group, Inc., ADDvantage Technologies Group of Missouri, Inc. is a company that provides cable equipment such as amplifiers, encoders, and fiber optics. The company was founded in 1986 and is based in Sedalia, MO. The company's products include trunk and distribution products, digital receivers, and optical s taps and equalizers. The company also offers repair services and have a resource library available on their website.

Ediche LLC is an American company that imports women's clothing. The private company is based in Tulsa. The company was founded by James C. McGill.

Leveling 8, Inc. provides investment services. The company is headquartered in Catoosa, OK.