GRAM Grana y Montero SAA

GRUPO GRANA Y MONTERO S.A.A. (“Grupo Graña y Montero” or “the Company”) (NYSE: GRAM; BVL: GRAMONC1), the largest engineering and construction company in Peru, announced today that it will host its Second Quarter 2013 earnings conference call on August 9, 2013 @ 9:30 a.m. Eastern Time / 8:30 a.m. Lima Time.

To participate, please dial:

    1-800-311-9401 (U.S. participants) 1-334-323-7224 (International Participants) Conference ID: 71651  

A replay of the conference call will be available until midnight Eastern Time on August 16, 2013 at:

1-877-919-4059 (U.S. participants) 1-334-323-7226 (International Participants) Confirmation Code: 64805251  

About the Company

Founded in 1933, Grupo Graña y Montero is the only Peruvian engineering and construction company listed on the Lima Stock Exchange (BVL: GRAMONC1) since 1997 and now also the NYSE-Euronext (NYSE: GRAM). 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.

Grupo Graña y Montero also has developed an international presence through major projects Latin America, such as the La Paz airport in Bolivia, the Four Seasons and W hotels in Mexico, 4 Melia hotels in the 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 the Dominican Republic, 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, please visit our website at: www.granaymontero.com.pe