Sidley Austin represents Range Resources Corp. in the Fort Worth company’s pending acquisition of Memorial Resource Development Corp. (MRD) for $4.4 billion including assumed debt. MRD turned to Vinson & Elkins.

On May 16, Range announced a definitive merger agreement calling for it to acquire all of the outstanding shares of common stock of Houston-based MRD in an all-stock deal valued at $4.4 billion including the assumption of $1.1 billion of MRD debt. Range is an independent oil and natural gas producer working in the Appalachian Basin, and MRD is an independent involved in the acquisition, exploration and development of natural gas and oil properties in North Louisiana.