INA-Industrija nafte, d.d. (INA, d.d.) is a medium-sized European oil company. INA Group has leading role in Croatian oil business and a strong position in the region in the oil and gas exploration and production, oil processing, and oil and oil products distribution activities. INA was established on January 1, 1964 through the merger of Naftaplin (company for oil and gas exploration and production) with the refineries in Rijeka and Sisak. INA, d.d. is a stock company having MOL Plc. and the Republic of Croatia as its biggest shareholders, while a minority of shares is owned by private and institutional investors. INA shares have been listed at the Zagreb stock exchanges since December 1, 2006. INA Group is comprised of several affiliated companies wholly or partially owned by INA, d.d. On December 31, 2016 INA Group had 10,861 employees. Apart from Croatia, INA has business operations in Angola and Egypt in the oil and gas exploration and production segment. INA manages 2 refineries: in Rijeka and Sisak. INA manages a regional network of 495 petrol stations in Croatia and neighboring countries.