Leonardo is the holding company for The Finmeccanica Group, and is responsible for guiding and controlling industrial and strategic operations, coordinates its subsidiaries. The Finmeccanica Group operates in the Aerospace and Defence sector, which includes the Helicopters, Defence and Security Electronics, Aeronautics, Space and Defence Systems segments; and in the Transportation sector, which also includes Fata S.p.a., in addition to the companies operating in the transportation sector.

Gestevision Telecinco is a television network company based in Spain. Co. heads a group of dependent companies, which form the Telecinco Group. Through its subsidiaries, Co. is engaged in the management and commercial exploitation of a television network. Co.'s television network acquires, produces, and distributes audiovisual content. Co. also sells the network advertising airtime, carried out by its subsidiary. In addition, Co. is involved in the sale of other advertising products; production of news programs; the production and sale of audiovisual property rights; and teleshopping.

Seche Environnement offers environmental management solutions for industrial clients or local authorities. Co. operates waste treatment and recovery facilities and develops tools to produce energy from waste. Co. also collects and sorts all types of waste, whether household or industrial, hazardous or non-hazardous. For local authorities, Co. manages household waste and other environmental concerns. Co. is engaged in thermal treatment, storage, methanization of household waste and production of alternative fuels. For industrial clients, Co. has developed products and services for handling industrial waste from waste production sites to elimination facilities.

Sif Holding NV is a company based in the Netherlands, which provides steel foundations to the offshore wind, oil and gas markets. The Company operates in two segments: the Offshore Wind segment focuses on manufacturing monopiles for offshore wind farms. Monopiles consist of a tubular structure, typically with conical, and are hammered into the seabed. The Oil and Gas segment specializes in the production of steel tubular parts for the offshore oil and gas industries, with focus on jackets and related structures. The Company focuses on the North Sea region and also manufactures parts for machines and civil engineering projects, such as tubulars used in the Maeslant storm surge barrier, tubular structures used in the London Eye, and foundations for jetties, which are mooring platforms for ships.