H. Grant Swartzwelder

TEPPCO Partners LP is a publicly traded energy logistics partnership with operations that span much of the continental United States. TEPPCO owns and operates an extensive network of assets that facilitate the movement, marketing, gathering and storage of various commodities and energy-related products. The partnership's midstream portfolio of assets comprises pipelines that gather and transport refined petroleum products, crude oil, natural gas, liquefied petroleum gases (LPGs) and natural gas liquids (NGLs), and includes one of the largest common carrier pipelines for refined petroleum products and LPGs in the United States. TEPPCO also owns a marine business that operates primarily on the United States inland and Intracoastal Waterway systems, and in the Gulf of Mexico.

El Dorado Chemical Co. manufactures agricultural chemical products. Its products include nitrogen-based fertilizers, nitric and sulfuric acid and industrial-grade ammonium nitrate for the mining industry. The company is headquartered in Oklahoma City, OK.

Bankers Trust Co. is an asset management headquartered in Des Moines, Iowa. The firm was founded in 1917 and is a subsidiary of BTC Financial Corp. The firm serves as a trusted partner for individuals’ comprehensive financial planning, trust and fiduciary needs.

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.

University of Southern California is a private research university that mainly offers undergraduate, graduate & other higher education. The university was founded in 1880 and is headquartered in Los Angeles, CA.

Robotti & Co., Inc. provides investment advices. It specializes in applying research methodology in identifying undervalued securities and offer personalized investment management targeted to clients long-term equity investment needs. The company was founded by Bob Robotti in 1983 and is headquartered in New York, NY.

Vantage Energy Services, Inc. operates as a blank check company. It acquires through a merger, capital stock exchange, exchangeable share transaction, and other similar business combination in the oilfield services industry. The company is headquartered in Houston, TX.

System One, Inc. operates as Commercial banking. The company is headquartered in Columbus, OH.

Cavaloz Holdings, Inc. functions as an investment holding private company. The company is based in Wilmington, DE.

Oklahoma Hall of Fame, Inc. engages in providing education services. The company was founded by Anna B. Korn in1927 and is headquartered in Oklahoma City, OK.

American Battlefield Trust operates as a heritage land protection organization. It also engages in the preservation of the history of American Civil War battlefields. It provides the Hallowed Ground quarterly membership magazine, classroom resources, special events, battlefield interpretation, and landscape restoration and upkeep. The company was founded in 1999 and is headquartered in Washington, DC.

Heritage Transfer Agency, Inc. is a transfer agency company. It provides investor and shareholder services. The company is headquartered in Toronto, Canada

Orion California LP engages in oil and gas production. The private company is based in California.

Part of Vitol Holding II SA, SemGroup Energy Partners GP LLC operates crude oil assets. The company is based in Tulsa, OK. SemGroup Energy Partners GP was acquired by Vitol, Inc. from SemGroup LP on November 24, 2009.

Steelpath Energy Infrastructure Investment Co. is a closed-end, non-diversified management investment company. The company's investment objective is to generate a high level of current income, with a focus on capital preservation and inflationary growth primarily through debt and equity investments. The trust was founded in August 2010 and is headquartered in Dallas, TX.

Mayer Brown LLP provides legal services in areas of banking & finance, corporate & securities, litigation & dispute resolution antitrust & competition, US supreme court & appellate matters, employment & benefits, environmental, financial services regulatory & enforcement, government & global trade, intellectual property, real estate, tax, restructuring, bankruptcy & insolvency and wealth management. The company was founded in 1881 and is headquartered in Chicago, IL.

Mekusukey Oil Co. LLC is a private company based in Wewoka, OK that was founded in 1970 by Duke R. Ligon. The company is one of the largest private mineral owners in the area and focuses on acquiring and managing perpetual mineral interests, rather than selling them.

Part of Blueknight GP Holding LLC, Blueknight Energy Partners GP LLC is a company that provides transportation services. The company is based in Tulsa, OK.

New Emerald Energy LLC engages in drilling oil and gas wells. The company is based in Denver, CO and has subsidiaries in Australia and the United States. The company was founded by James Russell Reger.

Security State Bank of Oklahoma operates as a state chartered commercial bank. It provides personal checking and savings accounts, certificate of deposit, personal borrowing, business and agriculture loans and checking accounts, and mortgage financing. The company is headquartered in Wewoka, OK.

Crowe & Dunlevy provides legal services. Its practice areas include administrative and regulatory, alternative dispute resolution, antitrust, appellate, aviation and commercial space, banking and financial institutions, bankruptcy and creditor's rights, business and information technology sourcing, construction, corporate and securities, criminal defense, compliance and investigations, employee benefits and erisa, energy, environment and natural resources, entertainment, healthcare, Indian law and gaming, initiative petitions, insurance, intellectual property, international, labor and employment. The company was founded by Charles Edward Johnson in 1902and is headquartered in Oklahoma City, OK.

Bluestone Capital Partners LP is a private company that provides brokerage services. The company is based in New York, NY. The company was founded by John H. Andreadis, Mark T. Behrman.

Part of Manitex International, Inc., Quantum Value Management LLC is a company that provides corporate development services. The company is based in Bloomfield Hills, MI.