Stefano Mion

2i Rete Gas SpA is a holding company, which engages in the marketing and distribution of natural gas. It specializes in the design, development, and operation of gas transmission and distribution plants. It also involves in transport management, network distribution, energy efficiency projects, energy contracting, facility installation & maintenance, and technical service & consulting. The company was founded in 1929 and is headquartered in Milan, Italy.

Società per Azioni Esercizi Aeroportuali SEA engages in the operation of Milan airports of Linate and Malpensa. It operates through the following business segments: commercial aviation, general aviation, and energy. The company was founded on May 22, 1948 and is headquartered in Segrate, Italy.

Società Gestione Servizi Aeroporti Campani engages in the operation and management of the Aerporto di Capodichino, the international airport in the province of Naples. It develops, plans, designs, maintains airport infrastructures as well as the aviation and non-aviation activities of the airport. The company was founded in 1980 and is headquartered in Naples, Italy.

Ardian Italy SRL provides investment services. It offers private equity, debt, infrastructure, buyout, expansion, real estate, mandates and impact investment. The company was founded in 1996 and is headquartered in Milan, Italy.

ASTM SpA is an industrial holding company which engages in management of motorway networks under concession, in the planning and construction of major infrastructure works and in technology applied to transport mobility. It operates through the following segments: Motorway Sector, Motorway/EPC Sector Planning and Construction Activities, EPC Sector, Technology Sector, and Services Sector. The company was founded on November 28, 1928 and is headquartered in Tortona, Italy.

Ardian US LLC (Ardian US) is a private equity subsidiary of Ardian SA founded in 1996. The firm is headquartered in New York.