Graña y Montero S.A.A. prepays US$ 150 million Medium Term Loan

Graña y Montero S.A.A. (“Graña y Montero” or “the Company”), the engineering and construction Peruvian company recently listed in the New York Stock Exchange, announced the prepayment of a syndicated loan provided by a group of twelve financial institutions, for a total amount of US$ 150 million, where BBVA Bancomer S.A., Institución de Banca Multiple, Grupo Financiero BBVA Bancomer acted as Administrative Agent and BBVA Continental acted as Collateral Agent.

The Company entered into this credit agreement on February 27, 2013 for a period of five years. The proceeds of such loan were used, mainly, to fund GyM Ferrovías S.A., concessionaire for Line 1 of the Lima Metro.

About Graña y Montero S.A.A.

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.

The Company has also executed several projects outside Perú, and has acquired three companies in Chile: DSD Construcciones y Montajes, an engineering and construction company specialized in providing services to the energy, oil and gas, cellulose and mining sector in Chile and Latin America; Vial y Vives, a construction company specialized in the mining sector, and CAM, which is specialized in electric services, with operations in Chile, Peru and Colombia.

Graña y Montero is listed in the NYSE under ticker symbol “GRAM” and in the Lima Stock Exchange under ticker symbol “GRAMONC1”.

Graña y Montero S.A.A.Juan Jose Arrieta, 511-213-6598Corporate Communications & Social Responsibility [e-mail] Gray F., 511-213-6583Investor Relations [e-mail]@gym.com.pe