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This communication does not contain or constitute an offer of, or the solicitation of an offer to buy, securities. The rights and shares referred to herein may not be offered or sold in the United States unless registered under the US Securities Act of 1933 (the “Securities Act”) or offered in a transaction exempt from, or not subject to, the registration requirements of the Securities Act. The rights or shares referred to herein have not been and will not be registered under the Securities Act or under the applicable securities laws of Australia, Canada or Japan. There will be no public offer of the ordinary shares in the United States, Australia, Canada or Japan. Copies of this communication are not being made available and may not be distributed or sent into the United States, Canada, Australia or Japan.

Milan, 22 July 2013 – Further to the press release issued on 18 July 2013, Maire Tecnimont S.p.A. announces that all the 288,732 subscription rights not exercised in the period between 1 July 2013 and 18 July 2013 (the “Offering Period”) for the subscription of 2,309,856 new ordinary shares of Maire Tecnimont S.p.A., resulting from the capital increase which was resolved upon by the extraordinary shareholders’ meeting held on 6 June 2013 (the “Remaining Rights”), were sold today during the first trading session on the Mercato Telematico Azionario. The Remaining Rights were sold at a unit price of Euro 1.23, for an aggregate amount of Euro 355,140.36.

The Remaining Rights are required to be exercised, and the related shares are required to be subscribed for, no later than the third business day following the date of communication of anticipated closing and, therefore, no later than 25 July 2013.

The Remaining Rights will be made available to the relevant purchasers through the authorized financial intermediaries registered with Monte Titoli S.p.A. and may be used to subscribe for new ordinary shares, with regular voting rights and having the same characteristics of other ordinary shares of Maire Tecnimont S.p.A., at a price of Euro 0.496 (Euro 0.486 of which as a share premium), at a subscription ratio of 8 new ordinary shares for each Remaining Right exercised.

During the Offering Period, new ordinary shares of Maire Tecnimont S.p.A. were subscribed for an aggregate amount of Euro 133,557,991.41. Therefore, pending the exercise of the Remaining Rights, the commitment of the joint global coordinators Banca IMI S.p.A. and Barclays Bank PLC to subscribe for any unexercised subscription rights has been reduced to a maximum amount of Euro 1,145,688.59.

Maire Tecnimont SpA

MaireTecnimont is an international leading Group in the sectors of Engineering & Construction (E&C), Technology & Licensing and Energy & Ventures with specific skills in plant engineering in particular in the hydrocarbon industry (Oil & Gas, Petrochemicals, Fertilizers) and also in Power Generation and Infrastructures. The Group is listed on the Milan Stock Exchange and is present in approximately 30 countries, controls around 45 operating companies and has about 4,500 employees, half of whom are located abroad. For further information: www.mairetecnimont.com.