Thomas D. Sell

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.

Montereau, Inc. is a not-for-profit Life Plan Community that was founded in 2003 by The William K. Warren Foundation. Montereau is located in Tulsa, OK, and is surrounded by nearby parks, shopping, and local eateries. St. Francis Hospital is also conveniently located just minutes away. The private company is dedicated to serving older adults and those who care for them. The company offers a full continuum of senior care, including apartments and garden homes that fit your style. The company provides answers to frequently asked questions about senior living options, including the difference between assisted living and home care.

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.