Jeffrey A. Herbers

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.

SemGroup LLC engages in the transportation, storage, distribution, market and other midstream services. It offers services for end-users and consumers of crude oil, natural gas, natural gas liquids and refined products. The company was founded in February 2000 and is headquartered in Oklahoma City, OK.

Cypress Environmental Partners LP engages in the provision of essential midstream services. The firm's services include pipeline inspection, integrity and hydrostatic testing services to energy companies and vendors. It operates through the following segments: Pipeline Inspection, Pipeline & Process and Water & Environmental Services. The Pipeline Inspection Services segment provides inspection and integrity services on a variety of infrastructure assets, including midstream pipelines, gathering systems and distribution systems. The Pipeline & Process Services segment provides midstream services including hydrostatic testing services and chemical cleaning related to newly-constructed and existing pipelines and related infrastructure. The Water & Environmental Services segment owns and operates Environmental Protection Agency Class II saltwater disposal facilities in the Williston Basin region of North Dakota. The company was founded by Peter C. Boylan III and Charles C. Stephenson Jr. in March 2012 and is headquartered in Tulsa, OK.

Part of Cypress Environmental Partners LP, Cypress Energy Partners GP LLC provides pipeline inspection and integrity services for pipeline companies. The company is based in Tulsa, OK. Peter C. Boylan has been the CEO of the company since 2013.

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.