Index

(Expressed in millions of US Dollars, unless otherwise indicated)

Report of Independent Registered Public Accounting Firm

To the Board of Directors and Shareholders

Petróleo Brasileiro S.A. - Petrobras

We have reviewed the accompanying condensed consolidated statement of financial position of Petróleo Brasileiro S.A. - Petrobras and its subsidiaries as of June 30, 2016, and the related condensed consolidated statements of income and comprehensive income for the three-month and six-month periods ended June 30, 2016 and June 30, 2015 and the condensed consolidated statements of cash flows and changes in shareholders’ equity for the six-month periods ended June 30, 2016 and June 30, 2015. This interimfinancial information is the responsibility of the Company's management.

We conducted our review in accordance with the standards of the Public Company Accounting Oversight Board (United States). A review of interim financial information consists principally of applying analytical procedures and making inquiries of persons responsible for financial and accounting matters. It is substantially less in scope than an audit conducted in accordance with the standards of the Public Company Accounting Oversight Board (United States), the objective of which is the expression of an opinion regarding the financial statements taken as a whole. Accordingly, we do not express such an opinion.

Based on our review, we are not aware of any material modifications that should be made to the accompanying condensed consolidated interim financial information for it to be in conformity with International Financial Reporting Standards (IFRS) as issued by the International Accounting Standards Board (IASB).

As discussed in Note 3 to the condensed consolidated interim financial information, during the third quarter of 2014, the Company wrote off US$ 2,527 million of overpayments on the acquisition of property plant and equipment incorrectly capitalized, according to testimony obtained from Brazilian criminal investigations.

We have previously audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated statement of financial position as of December 31, 2015, and the related consolidated statements of income, comprehensive income, cash flows (not presented herein) and changes in shareholders’ equity for the year then ended, and in our report dated March 21, 2016, we expressed an unqualified opinion on those consolidated financial statements. In our opinion, the information set forth in the accompanying condensed consolidated statement of financial position as of December 31, 2015, is fairly stated in all material respects in relation to the consolidated statement of financial position from which it has been derived.

/s/

PricewaterhouseCoopers

Auditores Independentes

Rio de Janeiro, Brazil

August 11, 2016

Consolidated Statement of Financial Position

June 30, 2016 and December 31, 2015

(Expressed in millions of US Dollars, unless otherwise indicated)

Consolidated Statement of Income

June 30, 2016 and 2015

(Expressed in millions of US Dollars, unless otherwise indicated)

Consolidated Statement of Comprehensive Income

June 30, 2016 and 2015

(Expressed in millions of US Dollars, unless otherwise indicated)

Consolidated Statement of Cash Flows

June 30, 2016 and 2015

(Expressed in millions of US Dollars, unless otherwise indicated)

Consolidated Statement of Changes in Shareholders’ Equity

June 30, 2016 and 2015

(Expressed in millions of US Dollars, unless otherwise indicated)

Notes to the financial statements

(Expressed in millions of US Dollars, unless otherwise indicated)

1.            The Company and its operations

Petróleo Brasileiro S.A. - Petrobras is dedicated, directly or through its subsidiaries (referred to jointly as “Petrobras”, “the Company”, or “Petrobras Group”) to prospecting, drilling, refining, processing, trading and transporting crude oil from producing onshore and offshore oil fields and from shale or other rocks, as well as oil products, natural gas and other liquid hydrocarbons. In addition, Petrobras carries out energy related activities, such as research, development, production, transport, distribution and trading of all forms of energy, as well as other related or similar activities. The Company’s head office is located in Rio de Janeiro – RJ, Brazil.

2.            Basis of preparation of unaudited interim financial information

The unaudited consolidated interim financial information has been prepared and is being presented in accordance with IAS 34 – “Interim Financial Reporting” as issued by the International Accounting Standards Board (IASB). The information is presented in U.S. dollars.

This unaudited interim financial information presents the significant changes in the period, avoiding repetition of certain notes to the financial statements previously reported. Hence it should be read together with the Company’s annual financial statements for the year ended December 31, 2015, which include the full set of notes.

Petrobras has selected the U.S. Dollar as its presentation currency. The financial statements have been translated from the functional currency (Brazilian Real) into the presentation currency (U.S. Dollar) in accordance with IAS 21 – “The effects of changes in foreign exchange rates”. All assets and liabilities are translated into U.S. dollars at the closing exchange rate at the date of the financial statements; income and expenses, as well as cash flows are translated into U.S. dollars using the average exchange rates prevailing during the year. All exchange differences arising from the translation of the consolidated financial statements from the functional currency into the presentation currency are recognized as cumulative translation adjustments (CTA) within accumulated other comprehensive income in the consolidated statements of changes in shareholders’ equity.

The Company’s Board of Directors in a meeting held on August 11, 2016 authorized the issuance of these consolidated interim financial information.

2.1.       Accounting estimates

The preparation of interim financial information requires the use of estimates and assumptions for certain assets, liabilities and other transactions. These estimates include: oil and gas reserves, depreciation, depletion and amortization, impairment of assets, pension and medical benefits liabilities, provisions for legal proceedings, dismantling of areas and environmental remediation, deferred income taxes, cash flow hedge accounting and allowance for impairment of trade receivables. Although our management uses assumptions and judgments that are periodically reviewed, the actual results could differ from these estimates.

3.            The “Lava Jato (Car Wash) Operation” and its effects on the Company

In the third quarter of 2014, the Company wrote off US$ 2,527 of capitalized costs representing amounts that Petrobras overpaid for the acquisition of property, plant and equipment in prior years. For further information see note 3 to the Company’s December 31, 2015 audited consolidated financial statements.

In preparing its financial statements for the period ended June 30, 2016, the Company considered all available information and did not identify any additional information in the investigations related to the “Lava Jato” (Car

Wash) Operation by the Brazilian authorities or by the independent law firms conducting an internal investigation that could materially impact or change the methodology adopted to recognize the write-off. The Company will continuously monitor the investigations for additional information and will review its potential impacts on the adjustment made.

As of June 30, 2016, the Company has recovered US$ 106 through leniency agreements, of which US$ 83 were received in 2015. The amounts recovered were recognized as other income (amounts recovered – “overpayments incorrectly capitalized”).

Additionally, on July 15, 2016, the Ministry of Transparency, Oversight and Control (Ministério da Transparência, Fiscalização e Controle – “MTFC”), the Public Prosecutor’s Office (Ministério Público Federal – “MPF”), the General Counsel for the Republic (Advocacia Geral da União – “AGU”) and SBM Offshore, signed a leniency agreement through which the Dutch company will pay compensation of US$ 342 , of which US$ 328  will be reimbursed to Petrobras as follows: (i) the first installment of US$ 129  will be paid as soon as the agreement becomes effective; (ii) the second and third installments will be paid 12 and 24 months after the signature of the agreement  in the amount of US$ 10  each; (iii) the remaining US$ 179 will be deducted from future payments owed by the Company to SBM pursuant to existing contracts.

To the extent that any of the proceedings resulting from the Lava Jato investigation involve new leniency agreements with cartel members or plea agreements with individuals pursuant to which they agree to return funds, Petrobras may be entitled to receive a portion of such funds and will recognize them as other income when received.

4.            Basis of consolidation

The consolidated interim financial information includes the interim information of Petrobras, its subsidiaries, joint operations and consolidated structured entities.

There were no significant changes in the consolidated entities in the six-month period ended June 30, 2016, except for the assets and liabilities of the subsidiary Petrobras Argentina S.A. – PESA, which are classified as held for sale, as set out in note 9.1.

5.            Summary of significant accounting policies

The same accounting policies and methods of computation were followed in these consolidated interim financial statements as those followed in the preparation of the annual financial statements of the Company for the year ended December 31, 2015.

6.            Cash and cash equivalents and Marketable securities

Cash and cash equivalents

Short-term financial investments in Brazil comprise investment in funds holding Brazilian Federal Government Bonds. Short-term financial investments abroad are comprised of time deposits with maturities of three months or less, highly-liquid automatic investing accounts, interest checking accounts and other short-term fixed income instruments.

Marketable securities

Trading securities refer mainly to investments in Brazilian Federal Government Bonds. These financial investments have maturities of more than three months and are mostly classified as current assets due to their maturity or the expectation of their realization in the short term.

7.            Trade and other receivables

7.1.       Trade and other receivables, net

7.2.       Trade receivables overdue - Third parties

7.3.       Changes in the allowance for impairment of trade receivables

7.4.       Trade receivables – electricity sector (isolated electricity system in the northern region of Brazil)

As of June 30, 2016, US$ 2,130 of the Company’s net trade receivables from the isolated electricity system in the northern region of Brazil related to the sale of fuel oil, natural gas, electricity and other products to thermoelectric power plants (which are subsidiaries of Eletrobras), state-owned natural gas distribution companies and independent electricity producers (Produtores Independentes de Energia – PIE) operating in that region, were classified as non-current assets. The balance of those receivables was US$ 3,133 as of June 30, 2016 (US$ 2,543 as of December 31, 2015).

A significant portion of the funds used by those companies to pay for products supplied by the Company came from the Fuel Consumption Account (Conta de Consumo de Combustível – CCC), which provides funds to cover a portion of the costs related to the supply of fuel to thermoelectric power plants located in the northern region of Brazil (operating in the isolated electricity system). However, as a result of changes in the CCC regulations over time, funds transferred from the CCC to these electricity companies have not been sufficient for them to meet their financial obligations and, as a result, some have not been able to pay for the products supplied by Petrobras.

In 2012, a new legislation (Provisional Measure 579 of September 11, 2012, revoked by Law No. 12.783/2013) significantly changed the sources of funds that were used to cover the cost of electricity generated in the Isolated Electricity System and the Brazilian Federal Government started to provide funds to cover costs that in the past

were only borne by the CCC. This assistance from the Federal Government would be made available through funds deposited in the Energy Development Account (Conta de Desenvolvimento Energético – CDE) by the Brazilian National Treasury. Those funds, however, proved to be insufficient to cover the operational costs of the isolated electricity system in the northern region of Brazil.

The funds available in the CCC, which were already insufficient to cover the costs related to fuel supplied by the Company, decreased significantly. Following an increase in the amounts owed by the thermoelectric power plants operating in the Isolated Electricity System, the Company put pressure on the negotiations with the state-owned natural gas distribution companies, the independent electricity producers (PIEs), subsidiaries of Eletrobras and other private companies. On December 31, 2014, the Company entered into a debt acknowledgement agreement with subsidiaries of Eletrobras with respect to the balance of its receivables as of November 30, 2014. Eletrobras acknowledged it owed US$ 2,202 to the Company. This amount is being adjusted monthly based on the Selic interest rate (Brazilian short-term interest rate). Under this agreement, the first of 120 monthly installments was paid in February 2015 and these payments have continued. As of May 7, 2015, US$ 1,889 had been guaranteed by the collateralization of certain amounts payable by the CDE to the CCC.

In early 2015, the Brazilian government reviewed its electricity price regulations and implemented a new pricing policy for the electricity sector, which has resulted in increases in the tariffs charged to end-customers since the first quarter of 2015. The Company had expected that this new policy would have strengthened the financial situation of the companies in the electricity sector and, consequently to reduce the balance of their accounts payable with respect to fuel oil and other products supplied by the Company, which has not occurred. Despite the increase in amount of electricity tariffs to end-users of electricity distributors in order to provide financial stability to these companies, the recovery flow of CCC funds has occurred slowly, delaying the reimbursements for fuel acquisition costs provided by Petrobras and deteriorating the default of those customers to the Company.

Pursuant to the issuance of Normative Instruction 679 on September 1, 2015 by the Brazilian National Electricity Agency (Agência Nacional de Energia Elétrica - ANEEL), the Company expected that the flow of funds it would receive from the CCC would accelerate. This is because funds would be paid directly from the CCC for products supplied in the prior month with a limit of 75% of the average payments made by the CCC in the previous three months. However, it has not occurred and, therefore, the insolvency of these receivables increased and these receivables continue to be delinquent.

In 2015, the Company recognized US$ 564 as allowance for impairment of trade receivables (net of reversals) due to frustrated negotiations to enter into additional debt acknowledgement agreements and new pledges of receivables from the CDE.

In the six-month period ended June 30, 2016, the Company recognized an allowance for impairment of trade receivables (net of reversals) in the amount of US$ 253, mainly related to new supplies of: (i) fuel oil by legal enforcement (injunction) in the first quarter of 2016; and (ii) natural gas, mainly in the second quarter of 2016. In July 2016, the AME paid part of receivables maturing in May and June 2016 in amount of US$ 58, therefore no allowance for impairment was recognized concerning this amount.

Accordingly, the Company adopted the following measures:

·      judicial collection of overdue receivables with respect to natural gas supplied to AME, Eletrobras and Cigás;

·         judicial collection of overdue receivables with respect to fuel oil supplied by the whole owned subsidiary BR Distribuidora to companies of Eletrobras Group (Amazonas, Acre, Rondônia and Roraima);

·      partial suspension of gas supply;

·      suspension of fuel oil supply, except when legally enforced; and

·      registration of entities controlled by Eletrobras as delinquent companies in Brazilian Central Bank files and registration of AME as a delinquent company in ANEEL files.

8.            Inventories

Inventories are presented net of a US$ 36 allowance reducing inventories to net realizable value (US$ 155 as of December 31, 2015), mainly due to changes in international prices of crude oil and oil products. In the six-month period ended June 30, 2016, the Company recognized as cost of sales a US$ 322 allowance charge reducing inventories to net realizable value (US$ 19 in the same period of 2015).

A portion of the crude oil and/or oil products inventories have been pledged as security for the Terms of Financial Commitment (TFC) signed by Petrobras and Petros in the amount of US$ 1,951 (US$ 1,719 as of December 31, 2015), as set out in note 21.1.

9.            Disposal of Assets

The Company’s 2015-2019 Business and Management Plan forecasts a dynamic portfolio of partnerships and divestments during the two years period of 2015-2016, subject to market and business conditions during the negotiations, which can change in accordance with the ongoing Company’s business analysis and also with the external environment. Accordingly, the conditions to recognize assets and liabilities as held for sale are achieved only when the Board of Directors approves a disposal.

9.1.       Sale of Petrobras Argentina

On May 12, 2016, the Board of Directors approved the disposal of the Company’s entire 67.19% interest in Petrobras Argentina -PESA, owned through the subsidiary Petrobras Participaciones S.L. (“PPSL”), to Pampa Energía, in the amount of US$ 892, without taking into account the effect of price adjustments and tax impact. This transaction was concluded (still subject to adjustments) on July 27. 2016, as set out in note 33.3.

9.2.       Termination of the contract for the sale of Bijupirá and Salema fields (BJS)

On February 26, 2016, Petro Rio S.A. terminated the contracts signed with the Company on July 1, 2015, for the sale of a 20% interest in Bijupirá and Salema concessions (BJS) and in the Dutch joint operation BJS Oil Operations B.V. (BJSOO BV). Accordingly, the amounts related to these fields were reclassified from assets and liabilities held for sale back to property, plant and equipment (US$ 148) and to provision for decommissioning costs (US$ 126), respectively, plus interest.

Due to the aforementioned reclassification, the respective assets were depreciated based on their historical data and their recoverable amounts were reassessed. As a result, the Company recognized an impairment loss as set out in note 13.

9.3.       Assets classified as held for sale

10.        Investments

10.1.   Investments in associates and joint ventures

10.2.   Investments in listed companies