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 August 2013

 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.

Form 20-F ____X___ 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.

Yes _______ No ___X____

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

Signature

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/ DENNIS GRAY FEBRES

Name: Dennis Gray Febres

Title: Stock Market Representative

Date: August 09, 2013

Consolidated Results Report First Semester of 2013 August 08, 2013

Notes to the Consolidates Results Report i) Graña y Montero Initial Public Offering in the New York Stock Exchange On July 24th, 2013, Graña y Montero S.A.A., became the first Peruvian engineering and construction company to be listed in the New York Stock Exchange (NYSE), after the successful completion of an initial public offering (IPO) of approximately US$314 million. The company issued 19’534,884 American Depositary Shares (ADSs), which represent 97’674,420 common shares of Graña y Montero S.A.A. The company also granted the underwriters an option for a period of 30 days to purchase a maximum of 2,930,233 additional ADSs, representing 14,651,165 common shares, to cover over‐allotments of ADSs. The offered price was US$ 21.13 per ADS, equivalent to S/.11.75 per common share. As a result of the offering, Graña y Montero is now listed in the NYSE with the “GRAM” ticker symbol. Credit Suisse, J.P. Morgan and Morgan Stanley acted as Global Coordinators; BTG Pactual as Joint Bookrunner; and BBVA Continental, Credicorp Capital e Interbank, as Co‐Managers of the offering. To access a copy of the offering prospectus please visit the official website of the Securities and Exchange Commission at www.sec.gov. ii) EBITDA As of the information reported in the prospectus regarding the shares issuance registered before the SEC, the international market practice for the EBITDA calculation has been adopted. The EBITDA calculation will start from the net income, figure to which the taxes, exchange rate differences and interests expenses will be returned to, whilst the depreciation and amortization will be added. We previously reported the EBITDA calculated as operational income plus depreciation and amortization. Moreover, as of this quarter, we will report an adjusted EBITDA, which will include adjustments to the Real Estate EBITDA as well as to the Metro de Lima EBITDA. ∙ Real Estate EBITDA: the proportional part of the land component of the units delivered during the period, will be added; ∙ Metro de Lima : the financial expenses considered, as well as the capital amortization applied to the corresponding long‐term account receivable during the period, will be added.

Consolidated Results Report ‐ First Semester of 2013 iii) Backlog As of the information reported in the prospectus regarding the shares issuance registered before the SEC, the reporting method of the company’s Backlog will have modifications in the Infrastructure and Real Estate segments according to what is following described. Engineering and Construction and Technical Services will continue to report their backlog according to the local market, therefore the total signed contracts will be reported. ∙ Infrastructure: the Oil & Gas business and the Norvial highway are not included as backlog. ∙ Real Estate: only the sold units which are pending of delivery are reported as backlog. iv) Technical Services The segment that was previously reported as Services, will be reported as Technical Services from now on. Consolidated Results Report ‐ First Semester of 2013

• The Group achieved Revenues of S/. 2,681.9 MM in the first six months of 2013, a 15.6% growth compared to the first semester of 2012 • Gross Profit reached S/.461.7 MM in the first semester of 2013, increasing 31.7% compared to the result obtained in the first semester of 2012 • Adjusted EBITDA was S/.492.9 MM in the first six months of 2013, higher by 32.8% than the result obtained in the first six months of 2012 • Net Income was S/. 122.3 MM in the first semester of 2013, representing a decrease of 6.8% compared to the same period of 2012 • Backlog reached US$ 4,177 MM in the first semester of 2013, a 52.9% increase compared to first semester of 2012 CONSOLIDATED QUARTERLY CUMULATIVE REVENUES (S/. MM) 1,090 2,308 3,661 5,232 1,268 2,682 0 1,000 2,000 3,000 4,000 5,000 6,000 1Q 12 2Q 12 3Q 12 4Q 12 1Q 13 2Q 13 REVENUES BY SEGMENT EBITDA BY SEGMENT NET INCOME BY SEGMENT Engineering & Construction 65.9% Technical Services 18.0% Infrastructure 9.8% Real Estate 6.3% Engineering & Construction 57.1% Technical Services 9.5% Infrastructure 21.3% Real Estate 12.1% Engineering & Construction 73.3% Technical Services 9.0% Infrastructure 9.0% Real Estate 8.6% Note: the Consolidated Results Report presents the accumulated figures as of the second quarter of 2013 and 2012 Executive Summary

Consolidated Results Report ‐ First Semester of 2013 Consolidated Results Revenues. Consolidated revenues reached S/. 2,681.9 MM during the first six months of 2013, an increase of 15.6% compared to the first six months of 2012. The revenue growth during the first half of 2013 is explained mainly by the increase in the Engineering and Construction segment, primarily due to the increase in activity in the mining services and civil works divisions, and in a less extent to the revenues reported in Vial y Vives, company acquired in October 2012. Moreover, the growth in consolidated revenues is also explained by the Real Estate segment as a consequence of a larger amount of units delivered during this period. Gross Profit. Consolidated gross profit increased from S/.350.6 MM to S/.461.7 MM, equivalent to an increase of 31.7% compared to 2Q2012. Accordingly, Gross Margin increased from 15.1% in 2Q2012 to 17.2% in the 2Q2013. The gross profit growth is explained mainly by the Engineering and Construction segment, and by the better margins in the mining services contracts, as well as the better margins in the Real Estate segment (units delivered). Profits & Losses Statement (Thousands S/.) 2Q 2012 2Q 2013 Var % REVENUES 2,319,272 2,681,917 15.6% GROSS PROFIT 350,606 461,715 31.7% General Expenses (117,964) (169,776) Other Operational Expenses 17,970 15,022 Others 539 (674) OPERATIONAL INCOME 251,151 306,286 22.0% Financial Expenses (14,500) (20,814) Participation in Associates 0 19,221 Exchange rate difference 2,694 (65,060) PRETAX INCOME 239,345 239,634 0.1% Taxes (75,213) (79,206) 5.3% Minority Interests (32,847) (38,135) NET INCOME 131,285 122,292 ‐6.8% EBITDA 363,022 463,047 27.6% ADJUSTED EBITDA 376,524 492,884 30.9% Financial Ratios 2Q 2012 2Q 2013 Gross Margin 15.1% 17.2% Operating Margin 10.8% 11.4% Net Margin 5.7% 4.6% EBITDA Margin 15.7% 17.3% Adjusted EBITDA Margin 16.2% 18.4% Financial Debt 673,773 1,223,228 Financial Debt / EBITDA 0.46 0.66 ROE 21.8% 21.0% Balance Sheet (Thousands S/.) 2Q 2012 2Q 2013 Current Assets 2,688,583 3,109,187 Non Current Assets 1,498,638 2,236,931 Total Assets 4,187,220 5,346,118 Current Liabilities 2,094,361 2,442,169 Non Current Liabilities 548,783 1,047,873 Total Liabilities 2,643,144 3,490,042 Equity 1,228,349 1,437,820 Minority Interests 315,727 418,256 Total Equity 1,544,076 1,856,076 Total Liabilities and Equity 4,187,220 5,346,118 The “Participation in Associates” account registers the profit generated in projects where Vial y Vives (company acquired by GyM S.A. in the last quarter of 2012) has a minority participation, as well as the minority participation GyM S.A. has in Viva GyM. Exchange rate difference. During the first half of 2013, the Nuevo Sol depreciated against the US Dollar, from S/. 2.551 per dollar as of December 31, 2012, to S/. 2.783 per dollar as of June 30, 2013. During 2Q2013, the company registered an exchange rate difference loss of –S/.65.1 MM compared to the S/.2.7 MM profit in 2Q2012.

Net Income. Consolidated Net Income was S/. 122.3 MM in 2Q2013, influenced by the exchange rate difference registered during the analyzed period, a result that is equivalent to a 6.8% lower Net Income compared to 2Q2012. Stable Cash Flows. Regarding stable long term cash flows, during the 2Q2013, 41.8% of the consolidated EBITDA is originated from Stable Cash Flows businesses. The EBITDA generated from these businesses allows us to cover the Interest Expenses of the company in 1.5x times. Consolidated Results Report ‐ First Semester of 2013

Consolidated Results Backlog. Consolidated Backlog reached US$ 4,177 MM as of 2Q2013, equivalent to an increase of 52.9% compared to the 2Q2012. From the total consolidated Backlog as of 2Q2013, US$ 1,153.0 MM will be executed during the remaining of 2013, US$ 1,528 MM in 2014, and the remaining in 2015 and the following years. Backlog does not include the Oil and Gas sub segment, nor the Norvial toll road concession, businesses that are reported as recurrent businesses. For further detail of the backlog, please go to the appendix page. 2,732 2,787 4,166 4,291 1,153 1,528 1,496 ‐ 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000 4,500 5,000 2Q 12 3Q 12 4Q 12 1Q 13 2Q 13 +52.9% 2015+ 2014 2013 4,177 Capital Expenditures. Capital Expenditures (CAPEX) amounted to S/. 382.5 MM (US$ 137.4 MM) in the 2Q2013, which represents an increase of 21.5% compared to 2Q2012 figures. The CAPEX distribution per Business Areas is: Infrastructure represents 59.3% , followed by Engineering and Construction with 18.3%, Real Estate with 18.3% and Services with 4.6%, and a smaller percentage invested for corporate purposes (office building). Backlog by Segment Backlog by Sector Backlog by type of client Backlog by geography Engineering & Construction 73% Infrastructure 9% Real Estate 2% Technical Services 19% Mining Projects 20% Mining Services 34% Oil and Gas 1% Electricity 18% Water and Sewage 3% Real Estate 6% Transport 16% Others 2% Private 81% Public 10% Cofinanced Concessions 4% Private Concessions 5% Foreign 22% Perú 78%

Indebtedness. Consolidated Financial Debt amounted to S/. 1,223.2 MM (US$ 439.5 MM) in the 2Q2013, a 81.5% increase compared to 2Q2012. This increase is explained mainly by the medium term loan credit agreement of up to US$ 150 MM with a group of financial institutions for the funding of the trains belonging to the Line 1 of the Lima’s Metro, signed in February 2013; and in a less extent, buy the loan financing GMP raised for its gas processing plant. Less than Between 1 and Between 2 and More than 1 year 2 years 5 years 5 years Total debt S/. 469,341 383,886 343,618 26,383 1,223,228 Total debt US$ 168,646 137,940 123,470 9,480 439,536 Total • In terms of tenor, 38.4% of the consolidated financial debt (S/. 469.3 MM), corresponds to short‐term financial obligations and the remaining (S/.753.9 MM) corresponds to long‐term financial obligations. • In terms of currency, 8.2% of the consolidated financial debt is denominated in Nuevos Soles and 87.2% in Dollars, while the balance is denominated in Chilean pesos. Consolidated leverage, measured through the Gross Financial Debt / Net Worth, reached 0.66x , while the Gross Financial Debt / EBITDA reached 1.32x in 2Q2013. It’s worth mentioning that the total Available Cash is S/. 418.9 MM as of 2Q2013. Consolidated Results Report ‐ First Semester of 2013

Infrastructure The Infrastructure Segment registered higher revenues the first semester of 2013, due to the increase in revenues of the Line 1 of Lima’s Metro compared to the first semester of 2012, due to the fact that in the first semester of 2012 the operation was not registered for the complete semester since it began in February. Additionally, the higher revenues are also explained by higher profit in the highways mainly due to an increase in the traffic flow of Norvial , as well as the advance in the construction of La Chira water treatment plant. Moreover, the oil business revenues were lower compared to the first semester of 2012, due to a decrease in the international oil prices (average price per basket of oils of US$ 101/bbl in the first semester of 2013 vs. US$ 106/bbl in the first semester of 2012). This was partially compensated by a higher average production volume obtained during the second quarter of 2013 (BDP 1,490 vs BDP 1,324). In addition, the revenues of the natural gas plant were affected by the decrease in generation of demand from EEPSA, whilst, Consorcio Terminales registered higher levels of fuel storage and dispatch during the first semester of 2013. Profits & Losses Statement (Thousands S/.) 2Q 2012 2Q 2013 Var % REVENUES 252,649 271,162 7.3% GROSS PROFIT 86,248 75,176 ‐12.8% General Expenses (15,681) (14,667) Other Operational Expenses (887) 246 Others 539 324 OPERATIONAL INCOME 70,219 61,079 ‐13.0% Financial Expenses (11,681) (8,741) Participation in Associates ‐ 359 Exchange rate difference (317) (32,032) PRETAX INCOME 58,221 20,665 ‐64.5% Taxes (16,795) (7,543) ‐55.1% Minority Interests (8,904) (1,420) NET INCOME 32,522 11,702 ‐64.0% EBITDA 103,144 100,230 ‐2.8% ADJUSTED EBITDA 104,176 108,010 3.7% Financial Ratios 2Q 2012 2Q 2013 Gross Margin 34.1% 27.7% Operating Margin 27.8% 22.5% Net Margin 12.9% 4.3% EBITDA Margin 40.8% 37.0% Adjusted EBITDA Margin 41.2% 39.8% Financial Debt 157,860 214,925 Financial Debt / EBITDA 0.77 1.07 ROE 15.0% 13.1% Net income was reduced due to the reason explained before, as well as to the impact in the devaluation of the Nuevo Sol registered during the first semester of 2013. The exchange rate effect for the Infrastructure segment is mainly explained by the bridge loan of the Lima Metro which was issued in American Dollars. Consolidated Results Report ‐ First Semester of 2013 Gross Profit was affected by lower results in the oil business, which were previously explained, and on the other hand, it was affected by the delay in the start of operations of the new trains, which was postponed because of delays in approvals from the Ministry. By the end of July, a preliminary addendum was signed, which allowed to put into operation five new trains temporarily, expecting for the definite approval to be issued by the end of August.

Engineering and Construction The growth in revenues of the Engineering and Construction segment in the first semester of 2013 was mainly driven by Stracon GyM, due to higher operating volumes in the mining services projects awarded in 2012. It was also due to higher activity in the civil works division and in less extent to the revenues registered during the first semester of Vial y Vives, which is a company that was acquired in October 2012. The growth in the Gross Margin is explained by the growth of revenues, and additionally by the improved margins in the contract mining business due to the execution phase the projects are in. Moreover, the Engineering and Construction segment registers the profit for the minority participation Vial y Vives holds in several of its projects, as well as the minority participation of GyM in Viva GyM in the line “Participation in Associates”. The Net Income at the end of the first semester of 2013 was S/. 95.2 MM, which represents an increase of 23.6% compared to the first semester of 2012. Net Income was affected by a exchange rate difference of S/. 22 .6MM, nonetheless the period closed with a net margin of 5.2% which is similar to the one registered in the first semester of 2012. EBITDA was S/. 268.7 MM in the 2Q2013, higher by 57.3% compared to last year’s result. This is explained by higher operating results. Profits & Losses Statement (Thousands S/.) 2Q 2012 2Q 2013 Var % REVENUES 1,533,357 1,818,221 18.6% GROSS PROFIT 174,966 261,062 49.2% General Expenses (66,051) (101,514) Other Operational Expenses 302 7,529 Others ‐ ‐ OPERATIONAL INCOME 109,217 167,077 53.0% Financial Expenses 308 987 Participation in Associates 5,538 24,534 Exchange rate difference 2,033 (22,571) PRETAX INCOME 117,096 170,027 45.2% Taxes (37,270) (54,764) 46.9% Minority Interests (2,782) (20,065) NET INCOME 77,044 95,197 23.6% EBITDA 170,870 268,738 57.3% ADJUSTED EBITDA ‐ ‐ Financial Ratios 2Q 2012 2Q 2013 Gross Margin 11.4% 14.4% Operating Margin 7.1% 9.2% Net Margin 5.0% 5.2% EBITDA Margin 11.1% 14.8% Adjusted EBITDA Margin ‐ ‐ Financial Debt 319,713 326,628 Financial Debt / EBITDA 0.94 0.61 ROE 37.9% 36.2% 61 89 7 6 2Q2012 2Q2013 NET INCOME (Million of S/.) GMI GYM +40.3% 152 255 15 13 2Q2012 2Q2013 EBITDA (Million of S/.) GMI GYM + 61.7% 1,445 1,731 84 87 2Q2012 2Q2013 REVENUES (Million of S/.) GMI GyM + 18.9% Consolidated Results Report ‐ First Semester of 2013

Capital expenditures (CAPEX) For the first semester of 2013 amounted to US$ 25.1 MM (S/. 69.9 MM), from which US$ 12.5 MM correspond to purchases of machinery for construction and U$ 9.3 MM for the purchase of mining equipment for the mining services contracts. Backlog. The Engineering and Construction segment reported a Backlog of US$ 3,048 MM in the firs semester of 2013, amount that is equivalent to a 63.5% increase compared to the amount registered for the same period of 2012. By the end of the first semester of 2013, two new contracts for the construction of the extension of the Cerro Verde Mine were registered in the backlog for US$ 190 MM. The total Backlog will be executed as follows: US$ 840.3 MM in 2013, US$ 1,155.1 MM in 2014 y US$ 1,052.3 MM in the following years. Cost plus Fee 58% EPC 15% Lump Sum 3% Unit Price 24% Backlog by type of contract Consolidated Results Report ‐ First Semester of 2013

30 16 6 5 0 2 1 ‐4 ‐16 2Q2012 2Q2013 NET INCOME (Million of S/.) GyM Ferrovías La Chira Canchaque Survial Norvial GMP ‐ 64.0% 141 128 41 44 12 21 7 27 34 45 2Q2012 2Q2013 REVENUES(Million of S/.) GyM Ferrovías La Chira Canchaque Survial Norvial GMP + 7.3% 70 61 32 34 1 0 0 4 6 3 ‐5 ‐3 2Q2012 2Q2013 EBITDA (Million of S/.) GyM Ferrovías La Chira Canchaque Survial Norvial GMP ‐ 2.8% 240 242 413 443 387 ‐ 50 100 150 200 250 300 350 400 450 500 2Q12 3Q12 4Q12 1Q13 2Q13 Infrastructure: BACKLOG (US$ MM) + 61.3% Capital Expenditures (CAPEX) for the first semester of 2013 amounted to a S/. 227.0 MM (US$ 81.6 MM) corresponding mainly to Lima Metro (75.7%) as well as to the investments in the Oil and Gas business. Backlog. The Infrastructure Area reported a Backlog of US$ 387.4 MM in the first semester of 2013, meaning a 61.3% increase compared to the amount registered in the first semester of 2012. The total Backlog of the Infrastructure Segment will be executed as follows: US$ 87.2 MM in 2013, US$ 136.7 MM in 2014 and US$ 163.4 MM in the following years. The Adjusted EBITDA at the end of the first semester of 2013, was of S/. 108.0 MM representing a margin of 39.8%, which is lower than the margin of 41.2% obtained in the first semester of 2012. This is explained by the impact in the operating results previously described. Consolidated Results Report ‐ First Semester of 2013

Real Estate Revenues for the fist semester of 2013 include the delivery of 886 housing units belonging mainly to Parques del Agustino, Villa El Salvador, Parque Central and Cipreses projects, as well as to the sale of a piece of land from Almonte for a total amount of S/. 16.2 MM. When comparing the data to the first semester of 2012, revenues included the delivery of 353 housing units belonging to the projects Parque Central, Parques de Carabayllo, amongst others, as well as to the sale of a piece of land from Almonte for S/.45.6 MM. Within the executed projects during the quarter, we can mention: Parque Central (Cercado de Lima), Los Parques de Carabayllo (Carabayllo), Los Parques de El Agustino II, Los Parques de Piura, Los Parques de San Martin de Porres and Real 8 (San Isidro). 88% of the projects are been executed in Lima, whilst 12% of them are been executed in other provinces of Peru. Gross Profit increased during the first semester of 2013 due to the increase in the delivered housing units during the period, as well as to the higher margins reported in the delivered housing units. On the other hand, the Gross Profit for this semester, includes the sale of a piece of land from Almonte for S/. 15.6 MM approximately, whilst in the first semester of 2012 it was S/. 43.5 MM. Profits & Losses Statement (Thousands S/.) 2Q 2012 2Q 2013 Var % REVENUES 92,135 174,740 89.7% GROSS PROFIT 56,086 66,009 17.7% General Expenses (3,423) (9,064) Other Operational Expenses (3,670) (468) Others ‐ (998) OPERATIONAL INCOME 48,993 55,479 13.2% Financial Expenses (1,754) (1,631) Participation in Associates ‐ 72 Exchange rate difference 418 (8,543) PRETAX INCOME 47,657 45,376 ‐4.8% Taxes (14,577) (12,627) ‐13.4% Minority Interests (24,663) (21,561) NET INCOME 8,418 11,188 32.9% EBITDA 50,984 57,019 11.8% ADJUSTED EBITDA 58,062 76,510 31.8% Financial Ratios 2Q 2012 2Q 2013 Gross Margin 60.9% 37.8% Operating Margin 53.2% 31.7% Net Margin 9.1% 6.4% EBITDA Margin 55.3% 32.6% Adjusted EBITDA Margin 63.0% 43.8% Financial Debt 67,000 139,722 Financial Debt / EBITDA 0.66 1.23 ROE 11.7% 11.5% Net Income closed the first semester of 2013 with of S/. 11.2 MM, representing an increase of 32.9% compared to the first semester of 2012, in spite of the exchange rate impact reported for the period of 2013. The Adjusted EBITDA was S/. 76.5 MM in the first semester of 2013, higher by 31.8% compared to the first semester of 2012. The Adjusted EBITDA Margin decreased from 63.0% in the firist semester of 2012 to 43.8% in the first semester of 2013. This reduction in the margin is explained by the higher sales of pieces of land from Almonte during the first semester of 2012. Consolidated Results Report ‐ First Semester of 2013

92 175 2Q2012 2Q2013 REVENUES (Million of S/.) +89.7% 51 57 2Q2012 2Q2013 EBITDA (Million of S/.) + 11.8% 8 11 2Q2012 2Q2013 NET INCOME (Million of S/.) + 32.9% 162 191 370 645 304 582 0 100 200 300 400 500 600 700 2Q2011 2Q2012 3Q2012 4Q2012 1Q2013 2Q2013 Delivered Housing Units Sold Housing Units 405 590 407 266 335 653 Capital Expenditures (CAPEX) in the first semester of 2013 amounted to S/. 55.1 M (US$ 19.8 MM), corresponding to the purchase of two pieces of land for the Pezet 583 building of 1,375m2 and acquired for US$ 17.0 MM, and another in Chiclayo of 8,100m2 and bought for US$ 1.3 MM. 107 120 108 115 96 ‐ 20 40 60 80 100 120 140 2Q12 3Q12 4Q12 1Q13 2Q13 Real Estate: BACKLOG (US$ MM) ‐10.3% Backlog. The Real Estate Segment reported a Backlog of US$ 96.2 MM in the 2Q2013, a 10.3% decrease compared to 2Q2012 due to the delivery of housing units. The main projects included in the Backlog are: Los Parques de San Martin de Porres, Parque Central, Real 8 and El Sol Barranco. The total Backlog of the Real Estate Area will be executed as follows: US$ 54.2MM in el 2013, US$ 32.4 MM in 2014 and the rest in the remaining years. Consolidated Results Report ‐ First Semester of 2013

Technical Services The revenues for the Technical Services segment decreased 2.9% compared to the same period in 2012, due to lower sales in the Electric Services business as a consequence of the closing of one the business lines the previous year. Moreover, the termination of two contracts for maintenance of roads during the first quarter of 2013 was compensated by the revenues generated from the contracts for maintenance of roads awarded by the end of 2012. Finally, the Information technology business increased its revenues due to new awarded projects. Gross Profit increased mainly due to the growth in the Information Technology business, and to improved margins in the outsourcing division, as well as to better margins reported in the Electric Services business as a consequence of the improvement of processes implemented during the previous years. Profits & Losses Statement (Thousands S/.) 2Q 2012 2Q 2013 Var % REVENUES 510,591 495,635 ‐2.9% GROSS PROFIT 61,469 83,955 36.6% General Expenses (55,098) (71,199) Other Operational Expenses 16,159 12,571 Others ‐ ‐ OPERATIONAL INCOME 22,530 25,327 12.4% Financial Expenses (2,777) (4,330) Participation in Associates ‐ 474 Exchange rate difference 1,217 (3,078) PRETAX INCOME 20,970 18,393 ‐12.3% Taxes (6,462) (4,584) ‐29.1% Minority Interests (1,540) (2,072) NET INCOME 12,967 11,737 ‐9.5% EBITDA 41,442 44,504 7.4% ADJUSTED EBITDA ‐ ‐ Financial Ratios 2Q 2012 2Q 2013 Gross Margin 12.0% 16.9% Operating Margin 4.4% 5.1% Net Margin 2.5% 2.4% EBITDA Margin 8.1% 9.0% Adjusted EBITDA Margin ‐ ‐ Financial Debt 124,972 126,594 Financial Debt / EBITDA 1.51 1.42 ROE 64.7% 48.2% Additionally, in the line of other Operational Expenses/Income, the reversion of provisions related to the acquisition of CAM is registered. Those reversions were higher in the first semester of 2012 compared to the figures reported in the first semester of 2013. For further detail on this point, please go to the Audited Financial Statements of 2012. The Net Income for the first semester was affected by the exchange rate differences, nonetheless it closed the period with a Net Margin of 2.4% which was similar to the one reported in the first semester of 2012. The EBITDA for the first semester of 2013 was S/.44.5 MM, higher by 7.4% compared to the result from the same period of 2012. This is explained by the higher operating results described previously. Consolidated Results Report ‐ First Semester of 2013

93 102 118 141 300 252 2Q2012 2Q2013 REVENUES (Million of S/.) CAM Concar GMD ‐2.9% 12 16 12 3 17 25 2Q2012 2Q2013 EBITDA (MIllion of S/.) CAM Concar GMD + 7.4% 2 3 6 2 5 7 2Q2012 2Q2013 NET INCOME (Million of S/.) CAM Concar GMD ‐9.5% Capital Expenditures (CAPEX) in the for the first semester of 2013 amounted to S/. 17.6 MM (US$ 6.3 MM). Backlog. The Services Area reported a Backlog of US$ 794.8MM in the first semester of 2013, amount that is equivalent to a 20.1% increase compared to the same period in 2012. This increase in backlog is mainly explained by new contracts for CAM, and three new contracts adjudicated to Concar for a total of US$300 MM approximately. The total Backlog of the Services Area will be executed as follows: US$ 224.2 MM in 2013, US$ 254.1 MM in 2014 and the remaining in the following years. 662 770 874 819 795 ‐ 100 200 300 400 500 600 700 800 900 1,000 2Q12 3Q12 4Q12 1Q13 2Q13 Services: BACKLOG (US$ MM) + 20.1% Consolidated Results Report ‐ First Semester of 2013

Figures in Thousands of S/. REVENUES 1,731,464 86,757 127,560 43,975 20,619 7,260 26,811 44,937 174,740 102,440 141,392 251,803 GROSS PROFIT 236,631 24,431 42,928 22,997 487 4,269 3,471 1,024 66,009 23,245 18,969 41,741 General Expenses (89,502) (12,012) (7,602) (1,645) (884) (501) (173) (3,862) (9,064) (15,027) (19,125) (37,047) Other Operational Expenses 7,596 (67) 93 9 280 (2) (3) (131) (468) 144 363 12,064 Others ‐ ‐ 210 ‐ ‐ ‐ ‐ 114 (998) ‐ ‐ ‐ OPERATIONAL INCOME 154,725 12,352 35,629 21,361 (117) 3,766 3,295 (2,855) 55,479 8,362 207 16,758 Financial Expenses 1,653 (666) (3,010) (2,661) (418) 17 (1,736) (933) (1,631) (1,103) 600 (3,827) Participation in Associates 24,534 ‐ 359 ‐ ‐ ‐ ‐ ‐ 72 ‐ ‐ 474 Exchange rate difference (20,828) (1,743) (6,671) (3,722) 2,989 1,222 2 (25,852) (8,543) (2,579) (77) (422) PRETAX INCOME 160,084 9,943 26,307 14,978 2,454 5,005 1,561 (29,640) (10,103) 4,680 730 12,983 Taxes (51,678) (3,086) (9,281) (4,372) (738) (1,504) (470) 8,822 (12,627) (1,609) (236) (2,739) Minority Interests (19,339) (726) (786) (5,292) (0) (1) (546) 5,205 (21,561) (333) 1,258 (2,997) NET INCOME 89,067 6,131 16,240 5,314 1,716 3,500 546 (15,614) (44,291) 2,738 1,752 7,247 EBITDA 255,391 13,347 61,294 34,391 (45) 3,808 3,346 (2,564) 57,019 16,047 3,173 25,284 ADJUSTED EBITDA ‐ ‐ ‐ ‐ ‐ ‐ ‐ 7,781 76,510 ‐ ‐ ‐ Engineering & Construction Infrastructure Real Estate Services SURVIAL GMD CONCAR CAM CANCH LA CHIRA GYM FERROVIAS Viva GyM Estado de Resultados (Thousand of S/.) GYM GMI GMP NORVIAL Figures in Thousands of S/. TOTAL IQ ‐ 2013 IIQ ‐ 2013 2013 2014 2015+ GyM 2,892,165 622,157 720,589 471,699 248,889 2,990,597 819,122 1,119,163 1,052,312 GMI 33,226 31,174 55,114 11,256 43,859 57,166 21,189 35,977 0 ENGINEERING & CONSTRUCTION 2,925,391 653,331 775,703 482,955 292,748 3,047,763 840,311 1,155,140 1,052,312 SURVIAL 74,430 7,409 10,476 1,321 9,154 77,497 25,263 25,192 27,041 CANCHAQUE 8,702 2,609 2,111 872 1,240 8,205 1,382 2,729 4,094 LA CHIRA 148,194 9,634 ‐42,523 24,991 ‐67,514 96,038 36,650 55,735 3,653 LINEA 1 METRO DE LIMA 182,112 16,147 39,692 18,250 21,441 205,657 23,908 53,093 128,656 INFRASTRUCTURE 413,439 35,798 9,756 45,435 ‐35,679 387,397 87,203 136,749 163,444 VIVA GYM 108,426 62,788 50,556 24,822 25,735 96,194 54,219 32,383 9,591 REAL ESTATE 108,426 62,788 50,556 24,822 25,735 96,194 54,219 32,383 9,591 GMD 84,830 36,809 27,035 15,003 12,032 75,055 26,765 26,862 21,429 CONCAR 352,017 50,806 10,630 ‐11,729 22,359 311,842 121,831 103,794 86,217 CAM 436,878 90,479 61,511 36,174 25,337 407,910 75,587 123,447 208,876 TECHNICAL SERVICES 873,725 178,094 99,176 39,448 59,728 794,807 224,182 254,103 316,522 ELIMINATIONS ‐155,031 ‐26,040 ‐20,444 ‐9,534 ‐10,911 ‐149,435 ‐53,157 ‐50,651 ‐45,627 TOTAL 4,165,950 903,971 914,747 583,126 331,621 4,176,725 1,152,758 1,527,724 1,496,242 Company/Period Initial Backlog Executed Backlog New Requests Backlog Total ANNUAL BACKLOG Figures in Thousands of S/. TOTAL IQ ‐ 2013 IIQ ‐ 2013 2013 2014 2015+ GMP 303,361 45,835 33,586 12,614 20,973 291,112 66,757 98,891 125,464 NORVIAL 100,389 15,801 21,519 24,436 ‐2,917 106,106 17,086 34,238 54,782 ANNUAL AMOUNT Company/Period Initial Amount Executed Amount New Requests Total Amount Annex: Backlog Report to June 2013 Annex: Profits & Losses Statement per Company Annex: Recurrent Business Report to June 2013 Consolidated Results Report ‐ First Semester of 2013

Contacts: Mónica Miloslavich Hart Chief Financial Officer (51) 213 6565 mmiloslavich@gym.com.pe Dennis Gray Febres Investor Relations (51) 213 6583 (51) 995 11 6688 dgray@gym.com.pe www.granaymontero.com.pe