Milan, 27 October 2017 – Under the buyback program of treasury shares referred to Art. 5 of the Commission Delegated Regulation (EU) of 8 March 2016 no. 596/2014 (the “MAR”), announced to the market on 22 September 2017 and launched on 25 September 2017 for no. 15,000,000 ordinary shares (the “Program”) servicing the equity-linked bond, Maire Tecnimont S.p.A. (the “Company” or “Maire Tecnimont”) announces – according to the provision and for the purpose of Article 2 paragraph 3  of the Commission Delegated Regulation (EU) 2016/1052 of 8 March 2016 (the “1052 EU Regulation”) – to have acquired on the Telematic Stock Exchange Market (MTA) organized and managed by Borsa Italiana S.p.A., in the period from 24 October 2017 through 27 October 2017 inclusive, total no. 520,000of treasury shares (corresponding to 0.17% of the total number of ordinary shares), at a weighted average price of Euro 4,679 for a total counter-value of Euro 2,433,092.10.

On the basis of information provided by Banca IMI S.p.A., the authorized intermediary in charge of carrying out the buyback mentioned in the present press release, here below is a summary of the daily operations, in aggregate form:

In accordance with the provisions of Article 2 paragraph 3 of the UE Regulation 1052, attached to this press release, information of the daily buying-in operations carried out in the above-mentioned period is indicated in detail.

This information is also published on the Company’s website, www.mairetecnimont.com (Section “Investors” – “Press Release” – “Press Release Buy Back”) for a five-year period.

At the date, the treasury shares held by the Company amount to no. 3,197,548.

Maire Tecnimont S.p.A.

Maire Tecnimont S.p.A., a company listed on the Milan Stock Exchange, leads an industrial group (Maire Tecnimont Group) playing a major role in the international Engineering & Construction (E&C), Technology & Licensing and Energy Business Development & Ventures markets, with specific competences in plant building, particularly in the hydrocarbons segment (Oil & Gas, Petrochemicals and Fertilizers), as well as in Power Generation and Infrastructures. Maire Tecnimont Group operates in approximately 40 different countries, numbering around 50 operative companies and a workforce of about 5,200 employees, along with approximately 3,000 additional Electrical & Instrumentation professionals. For more information: www.mairetecnimont.com.