SemGroup Corporation is a growth-oriented midstream company that specializes in moving energy. We own, operate, develop and acquire a diversified portfolio of midstream energy assets in the United States, Canada, Mexico and the United Kingdom.


Our Key Operations Include:

  • Transporting, storing, terminalling and trucking crude oil
  • Gathering, compressing, treating, processing and selling natural gas
  • Storing and terminalling refined petroleum products
  • Supplying and applying liquid asphalt cement in Mexico

Advanced Footprint

Our assets are strategically located in growing oil and gas producing areas and interconnected with key markets and logistics centers. Through Rose Rock Midstream, our Master Limited Partnership, and our subsidiaries, our expanding footprint reaches across multiple shale and natural resource plays including: the Bakken Shale, DJ/Niobrara, Eagle Ford, Mississippi Lime Play, Montney/Duvernay, Permian Basin, San Juan Basin and Utica Basin.

Backed By Experience

SemGroup is based in Tulsa, OK and employs more than 1,000 people across our operations.  Our employees represent some of the best in the business, backed by decades of industry experience. SemGroup CEO Carlin Conner joined the company in 2014, adding more than 23 years of energy experience to our seasoned leadership team.

It Takes Two

There are two ways to invest with us: through the purchase of units in Rose Rock Midstream, LP (NYSE: RRMS), a master limited partnership (MLP), or the purchase of shares in SemGroup Corporation (NYSE: SEMG), which owns 100% of the Rose Rock Midstream general partner along with other operating assets. This business model provides institutions that are unable to make direct MLP investments with a way to participate in our growth through common share ownership of the general partner.