Astaldi will retain 2% share in the company, ensuring its support in the development under its responsibility.
The transaction will be completed following on assessment by the Italian Competition Authority.
Milan metro Line 5 links Bignami Parco Nord station to San Siro Stadio station along a 13km route with 19 stations.
“FS’ entry among the shareholders in Metro 5 marks another step forward in carrying out the business plan presented on September 28 2016,” says CEO of FS Mr Renato Mazzoncini. “It is the first time that a metro line becomes part of FS’ portfolio.”