Candice L. Cheeseman

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.

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.

Rose Rock Midstream LP owns, operates, develops and acquires a diversified portfolio of midstream energy assets. The firm is engaged in the business of crude oil gathering, transportation, storage, distribution and marketing in Colorado, Kansas, Louisiana, Montana, New Mexico, North Dakota, Oklahoma, Texas and Wyoming. It operates through four segments: Supply and logistics, Corporate and Other, Transportation and Facilities. The company was founded on August 5, 2011 and is headquartered in Tulsa, OK.

SemGroup LP is a company that moves energy safely through a network of pipelines, terminals and storage tanks. Each step the company take demonstrates the vast experience of their employees, their dedication to add value to their customers’ business, and their desire to bolster the relationships. Founded in 2000, their newly reorganized company purchases, sells, processes, transports, and stores energy including crude oil, natural gas, natural gas liquids, asphalt and refined products. Their family of companies is fully operational and has financing firmly in place. All divisions are committed to a “zero incident” culture, with employees working to keep the public, and each other, safe.

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 Energy Transfer LP, Rose Rock Midstream Corp. is a company that provides oil and gas field services. The company is based in Tulsa, OK.