Nostrum Oil & Gas plc engages in the exploration, development, and production of oil and gas resources, primarily in the pre-Caspian Basin. The company operates through upstream and midstream segments, focusing on the Chinarevskoye and Stepnoy Leopard fields for oil and gas extraction, while also providing gas processing services through partnerships. Nostrum generates revenue from the sale of hydrocarbons, including oil, gas, and liquefied petroleum gas (LPG), serving markets in Kazakhstan and potentially beyond. The company emphasizes compliance with licensing obligations and operational performance to maintain its asset utilization.