Unit Corporation (Unit) is an oil and natural gas contract drilling company. In addition to its drilling operations, the Company has operations in the exploration and production and mid-stream areas. The Company operates through three segments: Oil and Natural Gas, Contract Drilling, and Mid-Stream. The Company’s Oil and Natural Gas operations are carried out by its subsidiary Unit Petroleum Company, which explores, develops, acquires, and produces oil and natural gas properties. Contract Drilling operations are carried out by subsidiary Unit Drilling Company and its subsidiaries. Contract Drilling segment contracts to drill onshore oil and natural gas wells for others. The Company’s Mid-Stream are operations carried out by subsidiary Superior Pipeline Company, L.L.C., which buys, sells, gathers, processes, and treats natural gas for third parties and for the Company.