Post Oak Energy Capital

Post Oak, which was established in 2006, is an energy-focused private equity firm based in Houston, Texas. Its management team has executive management experience and a broad network in the energy business as well as significant expertise in private equity investments, operations, development, finance, acquisitions and divestitures. The firm pursues private equity investments primarily in the upstream sector of the oil and gas industry in North America and, to a lesser extent, in oil field services and related infrastructure. Post Oak works in close partnership with operating management teams to build businesses, accelerate growth and enhance shareholder value.

Ceja Corporation

Ceja Corporation is a privately owned oil and gas exploration and production company founded in 1966 by the late Charles W. Oliphant. Prior to 1966, the Oliphant-Mayo family members operated in the oil and gas business under the Oliphant name beginning in the late 1920's. Ceja is headquartered in Tulsa, Oklahoma with the primary responsibility of managing and monitoring various producing properties and new prospects on behalf of the Oliphant-Mayo family members; in addition to the family's real estate and other financial assets.