Alisa Perkins

PricewaterhouseCoopers LLC provides assurance, tax and advisory services. Its services include audit and assurance, consulting, deals, human resources, legal, tax, and family business. The firm also offers accountability, risk management, structuring, mergers and acquisitions, and performance and process improvement. The company was founded in 1998 and is headquartered in Buffalo, NY.

National Multiple Sclerosis Society is a not-for-profit organization that provides advocacy, fund raising, clinical services, client programs and up-to-date information to individuals with multiple sclerosis, their families and healthcare providers. The company was founded in 1946 by Sylvia Lawry 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.

Part of Energy Transfer LP, Rose Rock Midstream GP LLC operates and manages a diversified portfolio of midstream energy assets. The private company is based in Tulsa, 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.