UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN ISSUER
PURSUANT TO RULE 13a-16 OR 15b-16 OF
THE SECURITIES EXCHANGE ACT OF 1934

For the month of September, 2016

Commission File Number 001-35591

GRAÑA Y MONTERO S.A.A.

(Exact name of registrant as specified in its charter)

GRAÑA Y MONTERO GROUP

(Translation of registrant’s name into English)

Republic of Peru

(Jurisdiction of incorporation or organization)

Avenida Paseo de la República 4667, Lima 34,

Surquillo, Lima

Peru

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F:

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): [ ]

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): [ ]

Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.

If "Yes" is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): Not applicable.

Hereby we inform as a Relevant Information Communication that on September 09, 2016, the consortium Electrinorte in which our subsidiary Morelco S.A.S. holds an 85% stake, has been awarded the Buena Pro for the Regional Transmission System STR-06-2016, located in the Colombian Atlantic Coast, in the Guajira Province, for the “Design, Supplies Procurement, Construction, Operation and Maintenance of the electrical reinforcement of Guajira: Transmission Lines - Riohacha- Maicao 110 kv and Riohacha-Cuestecitas 110 kv”. The project was awarded by the Mining and Energy Planning Unit (UPME), which is an entity of the Ministry of Mines and Energy.

The project has a duration period of 39 months of construction and 25 years of operation and maintenance.

The winning offer presented by the consortium integrated by Morelco S.A.S. is of approximately US$ 149’176,460.00, present value of the expected annual income for 25 years.

___________________________
/s/ Claudia Drago Morante
Stock Market Representative
Graña y Montero S.A.A.

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

GRAÑA Y MONTERO S.A.A.

By: /s/ CLAUDIA DRAGO MORANTE

Name: Claudia Drago Morante

Title: Stock Market Representative

Date: September 9, 2016