Fletcher Wheeler

Ernst & Young LLP engages in the provision of accounting, assurance, tax, transaction, and advisory services. It specializes in the actuarial, analytics and big data, cyber security, accounting compliance and reporting, center for board matters, international financial reporting standards, country tax advisory, global trade, tax accounting, and climate change and sustainability. The company was founded in 1989 and is headquartered in New York, NY.

Gable & Gotwals is a full-service law firm with around 100 attorneys who represent a diverse client base across the United States. The firm is based in Tulsa, OK, but has connections and reach beyond the state. The company provides legal services to Fortune 500 corporations, privately owned companies, entrepreneurs, foundations, and individuals. The firm is entrusted with the stewardship and strategic management of their clients' legal matters on a daily basis.

Hilti, Inc. manufactures and markets hand tools and power tools. Its products include powder-actuated fastening systems, drilling and demolition systems, diamond coring, cutting and sawing systems, cutting, sawing, grinding systems, measuring systems, cordless systems, firestop and fire protection systems, power tool consumables, screw and direct fastening systems, adhesive and mechanical anchoring systems, installation systems, strut and hanger systems and construction chemicals. The company was founded in 1941 and is headquartered in Plano, TX.

VarTec Telecom, Inc. provides local and long-distance telecommunications services to business and residential customers in the US, Canada and Europe. It has its own switching and network infrastructure in the U.S. and Europe. The company was founded by A. Joe Mitchell Jr. in February, 1989 and is located in Carrollton, TX.

Tulsa Inspection Resources LLC is a holding company, which engages in the provision of inspection services to the oil and gas pipelines and related facilities. It inspects full pipeline systems and related entities, including process plants, pump, compressor stations terminals and tanks. The firm also inspects gas gathering systems, related facilities and public utility distribution systems. The company was founded in 2003 and is headquartered in Tulsa, OK.

BOKF, NA, do-business-as BOK Financial, is an asset management firm headquartered in Tulsa, Oklahoma. The firm is a subsidiary of BOK Financial Corp. (NASDAQ: BOKF). BOKF offers trust and investment management services through their banks and subsidiary.

Saint Francis Health System, Inc. provides health care services. Its health system includes an acute care hospital; a children's hospital; a multispecialty medical/surgical clinic; a community hospital that offers various medical/surgical services to families in southeast Tulsa County; a cardiac care facility that focuses on patients and their families; and a psychiatric facility that offers a spectrum of inpatient and outpatient services. Saint Francis Health System was founded by William K. Warren Sr. on 1960 and is headquartered in Tulsa, OK.

Part of NGL Energy Partners LP, NGL Energy Holdings LLC functions as an investment holding company. The company is based in Tulsa, OK. H. Michael Krimbill has been the CEO of the company since 2010.

The American Institute of Certified Public Accountants provides vocational education in accounting. The company provides services to the accounting community, regulatory bodies, and other organizations. It also operates in Jersey City, Washington, and Lewisville. It was founded in 1887 and is headquartered in New York City, NY.

Schlumberger Ltd. Supplies technology, integrated project management and information solutions to customers working in the oil and gas industry worldwide. The company is headquartered in New York, NY.