Webuild — Regulatory Filings 2021

Nov 18, 2021

PRESS RELEASE

WEBUILD WINS €651 MLN LOT H41 GOLA DEL SILL‐PFONS ON AUSTRIAN SIDE OF BRENNER BASE TUNNEL

NEW LOT BRINGS TO FOUR THE LOTS UNDER CONSTRUCTION BY WEBUILD ON WORLD'S LONGEST RAILWAY TUNNEL OF 55KM

MILAN, November 18, 2021 – The Webuild Group and its Swiss subsidiary CSC have won Lot H41 Gola del Sill‐ Pfons of the Brenner Base Tunnel project for a value of €651 million. The Group has a 50% stake in the joint‐‐ venture with Swiss partner Implenia (50%). The joint‐venture was awarded the contract by BBT SE, a European public limited company created for the development of the railway tunnel between Italy and Austria under the Alps.

The lot, which will employ 400 workers directly, increases Webuild's involvement in the development of the Brenner Base Tunnel, which will become the longest railway tunnel in the world at 55 kilometres, one of the most complex projects given the mountainous terrain, thereby confirming the Group's expertise in tunnelling with a track record of approximately 2,400 kilometres of underground work. Webuild is working on other lots of the Brenner Base Tunnel, including the Isarco River Underpass and the Mules 2‐3 lot after having completed Lot Tulfes‐Pfons for BBT. Webuild is also working on the railway between Fortezza and Ponte Gardena south of the tunnel in the mountain.

The newly awarded Lot H41 foresees a section of the Brenner Base Tunnel in Austria and consists in the construction of the railway from Gola del Sill near the city of Innsbruck in the north to the town of Pfons located further south. The contract includes both the traditional method of excavation for the two parallel tunnels for approximately 7.3 kilometres, including auxiliary tunnels as well as the mechanised method of excavation for another 16.5 kilometres, in addition to the lining of the walls of completed tunnels, an underground emergency stop at Innsbruck, access tunnels, exploratory tunnels and parts of other secondary tunnels.

The mechanised method will deploy two tunnel‐boring machines (TBMs), among the most sophisticated in the sector, with a diameter of more than 10 metres. The design of the project focuses on the environmental sustainability of the project during construction: the logistics of the work sites are designed to reduce travel times for the transport of materials, and measures to reduce dust and noise are foreseen.

The Brenner Base Tunnel will be crucial for Europe. It will be a key part of the Scandinavian‐Mediterranean Corridor of the Trans‐European Transport Network (TEN‐T) that will connect Helsinki in Finland and La Valletta in Malta. It also plays an important role in connecting Italy and Austria with a high‐speed/high‐capacity railway.

Webuild is a global leader in infrastructure for sustainable mobility. In Italy, it is working on some of the most important projects in transport, including the high‐speed railways between Naples and Bari in southern Italy and Verona and Padua in the north. It is also building the Terzo Valico dei Giovi‐Nodo di Genova between Milan and Genoa.

****

Webuild, the new group born in 2020 from Salini Impregilo, is a leading global player in the construction of large, complex projects for sustainable mobility, clean hydro energy, clean water, green buildings, supporting clients in achieving sustainable development goals (SDGs). The Group is the expression of 115 years of engineering experience applied in 50 countries on five continents with 70,000 direct and indirect employees from more than 100 nationalities. Recognised for five years by Engineering News‐Record (ENR) as the world leader in water infrastructure (such as dams, hydraulic tunnels, water and wastewater management, and water treatment and

desalination plants), it ranks since 2018 among the top 10 in the environment sector and it is also leader in sustainable mobility (especially metro and rail lines, in addition to roads and bridges). A signatory of the United Nations Global Compact, the Group's expertise is displayed in projects such as the M4 metro line in Milan, Grand Paris Express, Cityringen in Copenhagen, Sydney Metro Northwest, Red Line North Underground in Doha, Line 3 of the Riyadh Metro and the high‐speed railways in Italy. Other projects include the new Genoa Bridge and the Gerald Desmond replacement bridge in Long Beach, California, the expansion of the Panama Canal, the Snowy 2.0 hydroelectric power station in Australia, the Rogun hydroelectric dam in Tajikistan, the Anacostia River and Northeast Boundary tunnels in Washington, D.C. and the Al Bayt 2022 World Cup stadium in Qatar. In 2020, the Group's total order backlog reached €41.7 billion, with 89% of the backlog of construction orders involving projects that support the SDGs set by the United Nations. Webuild, subject to direction and coordination by Salini Costruttori SpA, is headquartered in Italy and is listed on the Milan Stock Exchange (Borsa Italiana: WBD; Reuters: WBD.MI; Bloomberg: WBD:IM).

More information at www.webuildgroup.com

Contacts:

Media Relations Investor Relations Gilles Castonguay Amarilda Karaj Tel. +39 342 682 6321 Tel +39 02 444 22476 email: gr.castonguay@webuildgroup.com email: a.karaj@webuildgroup.com

Media Relations (Italy) Carmen Cecchini Tel. +39 346 3019009 email: c.cecchini@webuildgroup.com