GRAM Grana y Montero SAA

Today, Graña y Montero S.A.A. (“Graña y Montero” or the “Company”), the largest engineering and construction company in Peru, listed its American Depositary Shares (“ADSs”) on the New York Stock Exchange (NYSE) after a successful initial public offering amounting to approximately US$413 million in gross proceeds.

The Company also granted the underwriters an option to purchase ADSs up to approximately US$62 million in gross proceeds, exercisable within 30 days.

The offering consisted of 19,534,884 ADSs, each ADS representing five common shares. The offering price was US$21.13 per ADS. As a result of the offering, Graña y Montero began trading on the NYSE under the ticker symbol “GRAM”.

José Graña Miró Quesada, President of Graña y Montero, said that the Company plans to use the net proceeds of the offering to fund capital expenditures, including potential investments and acquisitions, as well as other general corporate purposes. “We estimate that approximately 60% of the net proceeds will be invested in infrastructure projects, 10% in the acquisition of land for our real estate segment, 20% on potential acquisitions, and the remainder will be used for other general corporate purposes,” he said.

Credit Suisse, J.P. Morgan and Morgan Stanley have acted as the Global Coordinators; BTG Pactual has acted as a Joint Bookrunner; and BBVA Continental, Credicorp Capital and Interbank, have acted as Co-managers in the offering.

A copy of the prospectus relating to the offering may be obtained on the website of the U.S. Securities and Exchange Commission at www.sec.gov.

About Graña y Montero

Founded in 1933, Graña y Montero is the only Peruvian engineering and construction company listed on the Lima Stock Exchange since 1997 and now also the NYSE. The Company has participated in the development of major engineering and construction projects in Peru, including large-scale, complex projects in the energy, mining, construction and real estate sectors.

With 80 years of operations, the Company has leveraged its engineering and construction expertise into complementary lines of business, such as the development, ownership, operation and maintenance of infrastructure assets, real estate developments, and the provision of technical services. The Company has significant investments in infrastructure concessions, such as three toll roads and Line 1 of the Lima Metro.

Graña y Montero also has developed an international presence through major projects Latin America, such as La Paz airport in Bolivia, the Four Seasons and W hotels in Mexico, four Melia hotels in Dominican Republic, and the Ralco hydroelectric plant and the Sheraton hotel in Chile.

The Company has also developed significant experience in the mining sector by participating in some of the largest projects in Peru and Latin America such as the San Cristobal mining project in Bolivia, the San Jose mine in Argentina, the Pueblo Viejo mining project in Dominican Republic, the Tanques de Acido Sulfurico project in Chuquicamata and the Caserones transmission line in Chile. The Company has also recently begun works in Minera Panama in that country.

The Company has recently acquired two companies in Chile: Vial y Vives in the mining industry, and CAM, which is specialized in electric services, with operations in Chile, Peru and Colombia.

For more information about the Company or to obtain a copy of the prospectus relating to the offering, please contact: Freddy Castro Chirinos fchirinos@chisac.com 511-4344107 / 99 7534016 Chirinos, Salinas & Associates Communication Consultant