Leonardo S.p.A., formerly Leonardo-Finmeccanica and originally Finmeccanica, is an Italian multinational company specialising in aerospace, defence and security. Headquartered in Rome, Italy, the company has 180 sites worldwide. It is the eighth largest defence contractor in the world based on 2018 revenues. The company is partially owned by the Italian government, which holds 30.2% of the company's shares and is its largest shareholder. On 1 January 2016, Leonardo-Finmeccanica became a single industrial company by integrating the activities of its subsidiaries AgustaWestland, Alenia Aermacchi, DRS Technologies, Selex ES, Oto Melara and WASS. The company is organised into five divisions (Helicopters, Aircraft, Aerostructures, Electronics, Cybersecurity). It is also the parent company and corporate centre for the subsidiaries and joint ventures Telespazio, Thales Alenia Space, MBDA and ATR.