Eclipse Resources Corporation Announces Agreements to Acquire New Utica Development Area (the “Flat Castle” Project Area) in Central Pennsylvania

Eclipse Resources Corporation (NYSE:ECR) (the “Company” or “Eclipse Resources”) today is pleased to announce that the Company and Eclipse Resources-PA, LP, a wholly owned subsidiary of the Company, have entered into a definitive Purchase and Sale Agreement to acquire certain oil and gas leases, wells and other oil and gas rights and interests covering approximately 44,500 net acres located in the counties of Tioga and Potter in the Commonwealth of