ITAÚ UNIBANCO HOLDING S.A.

CNPJ 60.872.504/0001-23

A Publicly Listed Company

ANNOUNCEMENT TO THE MARKET

Conference Calls of the 1^st quarter 2017 Result

In accordance with the invitation extended to the market participants and regulators and published in the investor relations website of Itaú Unibanco Holding (www.itau.com.br/investor-relations), the company will hold conference calls on May 04, 2017, of the first quarter 2017 result. The information and forecasts presented are based on information available up to the time of the events and involve risks, uncertainties and assumptions that may be beyond our control.

We wish to inform that, with respect to the public conference calls, Itaú Unibanco Holding provides:

Prior to the scheduled starting time (09:30 a.m. in Portuguese and 11:30 a.m. in English, Brasília time):

The slides that will be presented (also sent to the Brazilian Securities and Exchange Commission - CVM and to B3);

Following the scheduled end to the calls (11:00 a.m. in Portuguese and 1:00 p.m. in English, Brasília time):

Audio replays by calling 5511 31931012 or 5511 28204012, the passwords being 1578138# (Portuguese) and 1775156# (English). The replays will be available immediately following the calls until May 10, 2017;

The audio formats in the Investor Relations site within two hours; and

The transcriptions of the audio replays within a period of five days after the calls.

The public release of this information provides the market with democratic and equitable access, underscoring our commitment to the transparency of our announcements.

São Paulo, May 03, 2017.

MARCELO KOPEL

Investor Relations Officer

Candido Botelho Bracher President and CEO Caio Ibrahim David Executive Vice-President, CFO (Chief Financial Officer) and CRO (Chief Risk Officer) Marcelo Kopel Investor Relations Officer 1st quarter 2017 – Earnings Review Conference Call

Itaú Unibanco Holding S.A. 2 Pro Forma Information The merger between Itaú Chile and CorpBanca was concluded on April, 1st 2016. As from the second quarter of 2016, Itaú CorpBanca, the company resulting from this merger, was consolidated in our financial statements, as we are the controlling shareholder of the new bank. In order to allow comparison with previous periods, we are presenting historical pro forma data, that is, the combined result of Itaú Unibanco and CorpBanca for the periods previous to the second quarter of 2016, in the Management Discussion & Analysis report and in this presentation. The pro forma statements above mentioned were prepared considering all lines of the income statement, including 100% of Itaú CorpBanca’s result. The result related to the minority shareholders is shown in the “minority interests in subsidiaries” line, for both CorpBanca and Itaú Chile. As the data was prepared to demonstrate, on a retroactively basis, the effect of a transaction occurred in a subsequent date, there are limits inherent to pro forma information. The data was provided for illustration purposes only and should not be taken as a demonstration of the result that would have been achieved if the merger had occurred on a previous date, nor do they indicate any future result of the combined company.

Itaú Unibanco Holding S.A. 3 Risk Appetite (as approved by the Board of Directors) “We are a universal bank, operating predominantly in Latin America. Supported by our risk culture, we operate based on rigorous ethical and regulatory compliance standards, seeking high and growing results, with low volatility, by means of the long-lasting relationship with clients, correct price for risk, well-distributed fund-raising and proper use of capital.” Board of Directors Statement The Risk Appetite... o Sustainability and customer satisfaction o Risk culture o Price for risk o Diversification o Operational excellence o Ethics and respect for regulation It is based on establishes the types and levels of risk acceptable to the bank, within which management seeks to maximize value creation. Principles of Risk Management Guided by the andmonitored by43 metrics inserted in the day-to-day of business management Capitalization • Capital ratios in normal and stress situations • Debt issuance ratings Liquidity • Short and mid-term liquidity indicators Results Composition • Largest credit risk • Largest exposures and by rating brackets • Concentration by sectors, countries and segments • Concentration of market risk Operational Risk • Operational losses events • Information technology Reputation • Suitability indicators • Media Exposure • Customer complaint tracking • Regulatory compliance Dimensions

4 Commissions and Fees and Result from Insurance1: Financial Margin with Clients: Highlights + 130 bps(1Q17/4Q16) + 240 bps (1Q17/1Q16) R$6.2 billion Recurring Net Income Recurring ROE (p.a.) Credit Quality (March-17) 1 Result from Insurance (-) Retained Claims (-) Insurance Selling Expenses. Note: Results from Brazil consider units abroad ex-Latin America. + 7.3% (1Q17/4Q16) + 19.6% (1Q17/1Q16) R$6.0 billion 22.0% 23.5% + 170 bps(1Q17/4Q16) + 270 bps (1Q17/1Q16) Consolidated Brazil Consolidated Brazil + 6.2% (1Q17/4Q16) +19.6% (1Q17/1Q16) NPL 90 3.4% NPL 90 4.2% stable (1Q17/4Q16) - 10 bps (1Q17/1Q16) stable (1Q17/4Q16) - 20 bps (1Q17/1Q16) Consolidated Brazil Credit Portfolio (Endorsements and Sureties): Provision for Loan Losses: Non-interest Expenses: Efficiency Ratio: 1Q17/4Q16 - 8.0% - 2.7% - 7.4% - 31.1% - 1.4% + 6.3% - 7.8% + 0.8% - 120 bps + 10 bps - 1.9% - 7.9% 1Q17/1Q16 Financial Margin with theMarket: - 6.3% + 7.5%

Itaú Unibanco Holding S.A. 5 25.4% 25.1% 24.2% 22.8% 20.7% 21.1% 20.8% 21.7% 23.5% 1Q15 2Q15 3Q15 4Q15 1Q16 2Q16 3Q16 4Q16 1Q17 Annualized Recurring Return on Average Equity (quarterly) Recurring ROE / Recurring ROA Consolidated ROE / ROA Brazil ROE1 1 Includes units abroad ex-Latin America. 24.5% 24.8% 24.1% 22.1% 19.6% 20.6% 19.9% 20.7% 22.0% 1.7% 1.8% 1.8% 1.6% 1.4% 1.6% 1.6% 1.6% 1.7% 1Q15 2Q15 3Q15 4Q15 1Q16 2Q16 3Q16 4Q16 1Q17 Annualized Recurring Return on Average Equity (quarterly) Annualized Recurring Return on Average Assets (quarterly)

Itaú Unibanco Holding S.A. 6 Results 1 Result from Insurance includes the Result from Insurance, Pension Plan and Premium Bonds Operations before Retained Claims and Selling Expenses. 2 Include Tax Expenses (ISS, PIS, COFINS and other) and Insurance Selling Expenses. In R$ billions 1Q17 4Q16 1Q16 Operating Revenues 27.0 28.6 (1.7) -5.8% 26.9 0.1 0.3% Managerial Financial Margin 17.1 18.6 (1.5) -7.8% 17.4 (0.3) -1.7% Financial Margin with Clients 15.3 16.6 (1.3) -8.0% 15.7 (0.4) -2.7% Financial Margin with Clients (ex-Discounts Granted) 15.5 16.9 (1.3) -7.8% 15.9 (0.4) -2.3% Discounts Granted (0.3) (0.3) (0.0) 5.4% (0.2) (0.1) 23.6% Financial Margin with the Market 1.9 2 .0 (0.1) -6.3% 1.7 0 .1 7.5% Commissions and Fees 7.8 8 .0 (0.1) -1.7% 7.3 0 .5 7.0% Result from Insurance 1 2.0 2 .1 (0.1) -3.0% 2.1 (0.1) -6.3% Result from Loan Losses and Impairment (5.0) (6.1) 1 .1 -17.9% (7.0) 2.0 -28.5% Provision for Loan Losses (5.4) (5.8) 0 .4 -7.4% (7.8) 2 .4 -31.1% Impairment (0.4) (1.3) 0 .8 -64.6% - (0.4) - Recovery of Loans Written Off as Losses 0.8 1 .0 (0.2) -15.4% 0.9 (0.0) -0.2% Retained Claims (0.3) (0.4) 0 .0 -11.8% (0.4) 0.1 -18.6% Operating Margin 21.7 22.2 (0.5) -2.4% 19.5 2.1 11.0% Other Operating Income/(Expenses) (12.7) (13.8) 1.1 -8.2% (12.6) (0.1) 0.6% Non-interest Expenses (11.0) (11.9) 0 .9 -7.8% (10.9) (0.1) 0.8% Tax Expenses and Other 2 (1.7) (1.9) 0 .2 -10.6% (1.7) 0 .0 -1.0% Income before Tax and Minority Interests 9.0 8.4 0 .6 7.2% 6.9 2.1 30.1% Income Tax and Social Contribution (2.8) (2.7) (0.1) 2.1% (1.7) (1.0) 59.1% Minority Interests in Subsidiaries (0.0) 0 .2 (0.2) - 0 .0 (0.0) - Recurring Net Income 6.2 5.8 0 .4 6.2% 5.2 1.0 19.6% Non Recurring Events (0.1) (0.3) 0 .2 -55.2% (0.1) (0.1) 141.0% Net Income 6.1 5.5 0 .5 9.2% 5.1 0.9 18.4% change change

Itaú Unibanco Holding S.A. 7 In R$ billions Consolidated Brazil 1 Latin America (ex-Brazil) 2 Consolidated Brazil 1 Latin America (ex-Brazil) 2 Consolidated Brazil 1 Latin America (ex-Brazil) 2 Operating Revenues 27.0 25.0 2.0 28.6 26.5 2.2 26.9 24.5 2.4 Managerial Financial Margin 17.1 1 5.8 1.4 18.6 17.0 1.6 17.4 1 5.6 1.8 Financial Margin with Clients 15.3 1 4.1 1.2 16.6 15.2 1.4 15.7 1 4.0 1.7 Financial Margin with Clients (ex-Discounts Granted) 15.5 1 4.4 1.2 16.9 15.5 1.4 15.9 1 4.2 1.7 Discounts Granted (0.3) ( 0.3) ( 0.0) (0.3) ( 0.3) (0.0) (0.2) ( 0.2) - Financial Margin with the Market 1.9 1.7 0.2 2.0 1.8 0.2 1.7 1.6 0.1 Commissions and Fees 7.8 7.2 0.6 8.0 7.5 0.5 7.3 6.7 0.6 Result from Insurance 4 2.0 2.0 0.0 2.1 2.0 0.0 2.1 2.1 0.0 Result from Loan Losses and Impairment (5.0) ( 4.6) (0.4) (6.1) (5.4) ( 0.7) (7.0) (6.2) ( 0.7) Provision for Loan Losses (5.4) ( 5.0) ( 0.4) (5.8) ( 5.1) (0.8) (7.8) ( 7.1) (0.8) Impairment (0.4) ( 0.4) - (1.3) ( 1.3) - - - - Recovery of Loans Written Off as Losses 0.8 0.8 0.0 1.0 1.0 0.0 0.9 0.8 0.0 Retained Claims (0.3) ( 0.3) (0.0) (0.4) (0.4) ( 0.0) (0.4) (0.4) ( 0.0) Operating Margin 21.7 20.1 1.6 22.2 20.8 1.4 19.5 17.8 1.7 Other Operating Expenses (12.7) (11.2) ( 1.5) (13.8) (12.2) ( 1.6) (12.6) (11.0) (1.6) Non-interest Expenses (11.0) (9.6) ( 1.4) (11.9) (10.3) (1.6) (10.9) (9.3) (1.6) Tax Expenses and Other 5 (1.7) ( 1.7) ( 0.0) (1.9) ( 1.9) (0.0) (1.7) ( 1.7) (0.0) Income before Tax and Minority Interests 9.0 8.8 0.1 8.4 8.6 ( 0.2) 6.9 6.9 0.0 Income Tax and Social Contribution (2.8) ( 2.8) 0.0 (2.7) (2.9) 0.2 (1.7) (1.8) 0.0 Minority Interests in Subsidiaries (0.0) ( 0.1) 0.0 0.2 (0.0) 0.2 0.0 (0.1) 0.1 Recurring Net Income 6.2 6.0 0.2 5.8 5.6 0.2 5.2 5.0 0.1 Recurring Net Income Change - 1Q17 x 4Q16 6.2% 7.3% -24.5% Recurring Net Income Change - 1Q17 x 1Q16 19.6% 19.6% 21.9% 1Q17 4Q16 1Q16 Results – Brazil and Latin America 1 Includes units abroad ex-Latin America. 2 Latin America information is presented in nominal currency. 3 Latin America pro forma Financial Margin with the Market from 1Q16 does not consider CorpBanca’s information, which is classified in financial margin with clients. 4 Result from Insurance includes the Result from Insurance, Pension Plan and Premium Bonds Operations before Retained Claims and Selling Expenses. 5 Include Tax Expenses (ISS, PIS, COFINS and other) and Insurance Selling Expenses. 3

Itaú Unibanco Holding S.A. 8 Business Model 1 Result from Insurance includes the Result from Insurance, Pension Plan and Premium Bonds Operations before Retained Claims and Selling Expenses. 2 Include Tax Expenses (ISS, PIS, COFINS and other), Insurance Selling Expenses and Minority Interests in Subsidiaries. In R$ billions Operating Revenues 27.0 1 3.7 0.6 1 2.0 0.7 28.6 1 4.0 0.4 1 3.3 1.0 26.9 1 5.0 0.8 1 1.0 0.2 Managerial Financial Margin 1 7.1 11.2 0.6 4.6 0.7 1 8.6 11.5 0.4 5.7 1.0 17.4 12.6 0.8 3.9 0.2 Commissions and Fees 7 .8 2.4 0.0 5.4 - 8 .0 2.5 0.0 5.5 - 7 .3 2.4 0.0 5.0 - Result from Insurance 1 2 .0 - - 2.0 - 2 .1 - - 2.1 - 2 .1 - - 2.1 - Result from Loan Losses and Impairment (5.0) ( 5.0) - - - (6.1) (6.1) - - - (7.0) (7.0) - ( 0.0) - Retained Claims (0.3) - - ( 0.3) - (0.4) - - ( 0.4) - (0.4) - - ( 0.4) - Non-interest Expenses and Other Expenses 2 ( 12.7) ( 6.0) ( 0.1) ( 6.6) ( 0.0) (13.7) (6.8) ( 0.1) ( 6.7) (0.0) (12.6) (6.0) (0.1) ( 6.4) (0.0) Recurring Net Income 6 .2 1.9 0.3 3.4 0.6 5 .8 1.1 0.2 3.7 0.8 5 .2 1.6 0.4 3.0 0.2 Regulatory Capital 114.9 58.0 2.6 28.9 25.4 115.6 55.0 2.5 25.0 33.1 106.6 59.6 5.2 35.4 6.4 Value Creation 2.3 (0.2) 0.2 2.4 (0.1) 1.8 (0.9) 0.0 2.8 (0.1) 1.0 (0.9) 0.1 1.7 (0.0) Recurring ROE 22.0% 13.2% 42.4% 46.9% 9.4% 20.7% 8.2% 24.0% 59.3% 10.1% 19.6% 10.7% 30.2% 34.1% 9.5% Consolidated Credit Trading 1Q17 4Q16 Insurance and Services Excess Capital Consolidated 1Q16 Trading Insurance and Services Excess Capital Credit Trading Insurance and Services Excess Capital Consolidated Credit

Itaú Unibanco Holding S.A. 9 In R$ billions, end of period 1Q17 4Q16 change 1Q16 change Individuals 180.5 1 83.4 -1.6% 184.2 -2.0% Credit Card Loans 56.2 5 9.0 -4.8% 54.9 2.5% Personal Loans 26.3 2 6.3 0.0% 29.2 -9.9% Payroll Loans 44.9 4 4.6 0.5% 46.7 -4.0% Vehicle Loans 14.8 1 5.4 -3.9% 18.1 -18.4% Mortgage Loans 38.3 3 8.1 0.6% 35.4 8.4% Companies 236.6 2 43.1 -2.7% 264.9 -10.7% Corporate Loans 1 76.6 181.5 -2.7% 199.3 -11.4% Very Small, Small and Middle Market Loans 60.0 6 1.5 -2.6% 65.6 -8.6% Latin America 133.3 1 35.5 -1.6% 151.6 -12.1% Total with Endorsements and Sureties 550.3 5 62.0 -2.1% 600.7 -8.4% Corporate - Private Securities 36.7 3 6.4 0.7% 36.8 -0.2% Total with Endorsements, Sureties and Private Securities 587.0 5 98.4 -1.9% 637.5 -7.9% Total with Endorsements, Sureties and Private Securities (ex-foreign exchange rate variation) 587.0 5 95.7 -1.5% 615.9 -4.7% Credit Portfolio Note: Excluding the effect of Foreign exchange variation, the Corporate Loans portfolio would have decreased 2.1% in the quarter and 8.7% in the 12-month period and the Latin America portfolio would have decreased 0.6% in the quarter and 2.8% in the 12-month period.

Itaú Unibanco Holding S.A. 10 16,862 15,547 412 311 92 306 194 4Q16 Mix of products, clients and spreads Calendar days Balance of Spread- Sensitive Operations Working Capital and other Latin America financial margin with clients 1Q17 10.6% 10.9% 11.0% 11.1% 11.1% 11.6% 7.0% 7.4% 7.4% 7.5% 6.1% 6.7% 10.1% 10.3% 10.5% 10.8% 10.3% 12.1% 13.1% 14.0% 14.1% 14.1% 14.1% 14.1% 13.8% 12.7% 5.4% 6.1% 6.8% 6.6% 6.7% 1Q15 2Q15 3Q15 4Q15 1Q16 2Q16 3Q16 4Q16 1Q17 Annualized average rate of financial margin with clients - without CorpBanca Annualized average rate of risk-adjusted financial margin with clients - without CorpBanca Annualized average rate of financial margin with clients - with CorpBanca CDI (annualized quarterly rate) Annualized average rate of risk-adjusted financial margin with clients - with CorpBanca Financial Margin with Clients Annualized Average Rate Change in Financial Margin with Clients, excluding Discounts Granted 1 Latin America Managerial Financial Margin with clients variance does not consider calendar days impact. This impact was considered in its specific column. 1 In R$ millions

Itaú Unibanco Holding S.A. 11 Financial Margin with the Market 1 Includes units abroad ex-Latin America; 2 Excludes Brazil; 3 The Latin America pro forma Financial Margin with the Market from 2015 and 1Q16 does not consider CorpBanca´s information, which is classified in financial margin with clients. . 1 2, 3 In R$ billions (0.0) 0.2 0.2 0.1 0.1 0.3 0.3 0.2 0.2 1.9 1.4 2.1 1.2 1.6 1.2 1.5 1.8 1.7 1.9 1.6 2.3 1.3 1.7 1.5 1.7 2.0 1.9 1.2 1.4 1.7 1.7 1.7 1.7 1.6 1.7 1.8 - 0.5 1.0 1.5 2.0 2.5 - 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 1Q15 2Q15 3Q15 4Q15 1Q16 2Q16 3Q16 4Q16 1Q17 Financial Margin with the Market - Brazil Financial Margin with the Market - Latin America 1-year moving average of Financial Margin with the Market

Itaú Unibanco Holding S.A. 12 7.1 6.8 6.4 6.1 5.8 5.6 5.2 4.9 4.8 4.9 5.4 5.8 6.0 5.9 5.7 5.6 5.3 0.4 0.6 0.6 0.5 0.6 0.7 0.8 0.9 1.1 1.8 1.5 1.1 1.5 1.6 2.8 1.3 1.6 7.3 6.4 5.8 5.3 4.9 4.6 4.4 4.2 4.1 4.0 4.2 4.7 5.6 6.0 6.3 5.8 5.6 Mar-13 Jun-13 Sep-13 Dec-13 Mar-14 Jun-14 Sep-14 Dec-14 Mar-15 Jun-15 Sep-15 Dec-15 Mar-16 Jun-16 Sep-16 Dec-16 Mar-17 Individuals Corporate Very Small, Small and Middle Market Companies * Credit Quality 1 Includes units abroad ex-Latin America. 2 Excludes Brazil. 4.2 3.9 3.5 3.3 3.2 3.1 3.0 2.9 2.8 3.0 3.0 3.2 3.5 3.6 3.9 3.4 3.4 4.9 4.6 4.3 4.0 3.8 3.7 3.6 3.4 3.3 3.6 3.8 3.9 4.4 4.5 4.8 4.2 4.2 0.8 0.7 0.7 0.7 0.8 0.7 0.9 1.1 1.1 1.1 1.2 1.1 1.1 1.1 1.2 1.2 1.3 Mar-13 Jun-13 Sep-13 Dec-13 Mar-14 Jun-14 Sep-14 Dec-14 Mar-15 Jun-15 Sep-15 Dec-15 Mar-16 Jun-16 Sep-16 Dec-16 Mar-17 Total Brazil1 Latin America2 * * *Excluding specific economic group effect, the total and Brazil1 NPL ratios (90-day) would have been 3.6% and 4.4% in September 2016, respectively. *Excluding specific economic group effect, the NPL ratio (90-day) for corporate segment would have been 1.4% in September 2016. 90-day NPL Ratio - Consolidated - % 90-day NPL Ratio - Brazil 1 - %

Itaú Unibanco Holding S.A. 13 Credit Quality 15 to 90-day NPL Ratio - Consolidated - % 4.0 3.4 3.0 3.0 3.0 2.7 2.6 2.5 2.9 3.0 3.0 2.6 3.1 3.2 2.9 2.5 3.2 4.3 3.6 3.2 3.2 3.1 2.9 2.7 2.6 3.0 3.1 3.2 2.8 3.3 3.6 3.2 2.6 3.3 1.5 1.2 1.3 1.2 1.2 1.0 1.4 1.7 1.9 1.8 1.5 1.5 1.8 2.1 2.1 2.3 2.7 Mar-13 Jun-13 Sep-13 Dec-13 Mar-14 Jun-14 Sep-14 Dec-14 Mar-15 Jun-15 Sep-15 Dec-15 Mar-16 Jun-16 Sep-16 Dec-16 Mar-17 Total Brazil1 Latin America2 6.6 7.0 6.2 5.6 4.9 5.1 4.8 4.2 3.8 4.2 4.3 4.2 3.9 4.2 4.2 4.2 3.6 4.0 3.4 4.1 3.1 2.6 3.2 2.9 2.6 3.0 3.1 3.6 3.6 3.4 3.9 4.2 4.3 3.8 3.5 3.7 0.3 0.7 0.3 0.4 0.8 0.6 0.6 0.5 0.8 1.2 1.4 1.9 0.9 1.5 2.3 1.5 0.7 2.0 Dec-12 Mar-13 Jun-13 Sep-13 Dec-13 Mar-14 Jun-14 Sep-14 Dec-14 Mar-15 Jun-15 Sep-15 Dec-15 Mar-16 Jun-16 Sep-16 Dec-16 Mar-17 Individuals Very Small, Small and Middle Market Companies Corporate * 1 Includes units abroad ex-Latin America. 2 Excludes Brazil. *Note: Total and Latin America 15 to 90-day NPL Ratios prior to June 2016 do not include CorpBanca. 15 to 90-day NPL Ratio - Brazil 1 - %

Itaú Unibanco Holding S.A. 14 NPL Creation In R$ billions 5.0 5.5 6.3 5.7 6.0 5.3 6.8 5.3 4.9 3.6 3.9 4.3 4.5 4.3 4.2 4.1 3.8 3.5 1.0 1.4 1.3 1.0 1.5 1.1 2.3 0.8 1.0 0.4 0.3 0.6 0.2 0.3 0.1 0.4 0.8 0.5 1Q15 2Q15 3Q15 4Q15 1Q16 2Q16 3Q16 4Q16 1Q17 Total Retail Banking - Brazil Wholesale Banking - Brazil Latin America ex-Brazil * * * Excluding specific economic group effect, Total and Wholesale segment (Brazil) NPL Creation would have been R$5.2 billion and R$0.7 billion in the 3Q16, respectively.

Itaú Unibanco Holding S.A. 15 In R$ billions Cost of Credit In R$ billions Provision for Loan Losses and Cost of Credit Provision for Loan Losses by Segment 3.5 3.7 4.3 4.6 4.3 4.4 3.9 4.0 3.5 1.9 1.6 1.3 1.4 2.7 1.5 1.8 1.1 1.4 0.4 0.4 0.4 0.4 0.8 0.4 0.4 0.8 0.4 5.7 5.8 6.0 6.4 7.8 6.3 6.2 5.8 5.4 1Q15 2Q15 3Q15 4Q15 1Q16 2Q16 3Q16 4Q16 1Q17 Retail Banking - Brazil Wholesale Banking - Brazil Latin America ex-Brazil 4.8 4.8 5.1 5.1 7.2 6.3 5.6 6.4 5.3 1Q15 2Q15 3Q15 4Q15 1Q16 2Q16 3Q16 4Q16 1Q17 (Provision for Loan Losses + Recovery of Loans Written Off as Losses + Impairment + Discounts Granted)

Itaú Unibanco Holding S.A. 16 Total Allowance by Type of Risk – Consolidated Allocation of Total Allowance(*) by Type of Risk - Consolidated Regulatory Breakdown Overdue Aggravated Potential3 Expected and/or Potential Loss Related to expected loss in Retail segment and potential loss in Wholesale segment Renegotiation and overdue loans Related to aggravated risk rating of overdue and renegotiated operations Overdue operations according to the Brazilian Central Bank Related to minimum provision required for overdue operations according to CMN Resolution 2,682/1999 CorpBanca In R$ billions 11.9 11.8 11.2 8.3 8.8 9.3 15.8 16.9 17.1 2.2 38.2 37.4 37.6 Mar-16 Dec-16 Mar-17 2.0 9.2 6.0 Latin America2 Wholesale - Brazil1 Retail - Brazil1 0.7 1.8 4.4 0.2 1.1 1.1 0.9 2.9 5.5 Latin America2 Wholesale - Brazil1 Retail - Brazil1 Renegotiations (non-overdue/aggravated) 0.4 0.9 2.6 0.5 0.8 6.0 0.9 1.7 8.7 Latin America2 Wholesale - Brazil1 Retail - Brazil1 Fully Provisioned 15.9 10.9 Mar-17 Generic Allowance Complementary Allowance Specific Allowance 37.6 1.9 10.8 Provision for Financial Guarantees Provided 9.0 1 Includes units abroad ex-Latin America. 2 Excludes Brazil. 3 Allowance for potential losses includes the provision for financial guarantees provided. (*) Total allowance includes the allowance for loan losses and provision for financial guarantees provided, which in March 2017 totaled R$1,870 million and is registered as a liability in accordance with CMN Resolution No. 4,512/16.

Itaú Unibanco Holding S.A. 17 199% 187% 212% 206% 210% 215% 204% 222% 231% 95% 90% 100% 97% 102% 104% 104% 104% 104% Mar-15 Jun-15 Sep-15 Dec-15 Mar-16 Jun-16 Sep-16 Dec-16 Mar-17 Total Total (Expanded¹) Coverage Ratio (90-day NPL) Coverage Ratio and Expanded Coverage Ratio Coverage Ratio Expanded Coverage Ratio is calculated from the division of the total allowance balance* by the sum of 90 days overdue operations and of renegotiated loan portfolio excluding the double counting of 90 days overdue renegotiated loans. Expanded Coverage Ratio data prior to June 2016 do not include CorpBanca. (*) Total allowance used for calculation of the coverage and expanded coverage ratios includes the allowance for loan losses and provision for financial guarantees provided, which in March 2017 totaled R$1,870 million and is registered as a liability in accordance with CMN Resolution No. 4,512/16. Without CorpBanca With CorpBanca 215% 231% 231% 160% 162% 165% 458% 562% 553% Mar-16 Dec-16 Mar-17 Latin America ex-Brazil Retail Banking - Brazil Wholesale Banking - Brazil

Itaú Unibanco Holding S.A. 18 Commissions & Fees and Result from Insurance In R$ billions 1Q17 4Q16 change 1Q16 change Asset Management ¹ 0.9 0.8 5.7% 0.7 24.8% Current Account Services 1.7 1.7 -0.9% 1.5 6.8% Credit Operations and Guarantees Provided 0.8 0.9 -3.5% 0.8 10.6% Collection Services 0.4 0.4 -0.7% 0.4 14.6% Credit Cards 2.9 3.1 -5.7% 2.9 1.4% Other 0.5 0.6 -6.7% 0.5 8.7% Latin America (ex-Brazil) 0.6 0.5 15.3% 0.6 4.0% Commissions and Fees 7.8 8 .0 -1.7% 7 .3 7.0% Result from Insurance ² 1.6 1.6 0.1% 1.6 3.0% Total 9 .4 9 .6 -1.4% 8 .9 6.3% (-) Result from Other Insurance Activities ³ 0.1 0.1 10.4% 0.1 -7.8% Total excluding Other Insurance Activities 3 9 .3 9 .5 -1.5% 8 .8 6.5% 1 Includes fund management fees and consortia management fees. 2 Result from Insurance includes the Result from Insurance, Pension Plan and Premium Bonds Operations net of Retained Claims and Selling Expenses. 3 Other insurance activities include extended warranty, health insurance, other products and our stake in IRB.

Itaú Unibanco Holding S.A. 19 Non-Interest Expenses 1 Includes IPTU, IPVA, IOF and other. Does not include PIS, Cofins and ISS; 2 Does not consider overhead allocation. In R$ billions 1Q17 4Q16 change 1Q16 change Personnel Expenses ( 4.8) (4.9) -2.2% ( 4.4) 9.7% Administrative Expenses ( 3.8) ( 4.3) -11.6% (3.7) 2.5% Personnel and Administrative Expenses ( 8.6) ( 9.2) -6.6% ( 8.1) 6.4% Operating Expenses ( 1.1) (1.2) -7.9% (1.2) -14.0% Other Tax Expenses (1) ( 0.1) ( 0.1) -13.1% (0.1) -11.8% Latin America (ex-Brazil) (2) ( 1.3) ( 1.5) -14.4% (1.5) -15.7% Total ( 11.0) (11.9) -7.8% (10.9) 0.8% 85,773 85,028 84,490 83,481 82,871 82,213 81,737 80,871 81,219 787 753 758 712 703 716 695 648 620 13,583 13,720 13,785 13,672 13,469 13,531 13,552 13,260 13,116 100,143 99,501 99,033 97,865 97,043 96,460 95,984 94,779 94,955 Mar-15 Jun-15 Sep-15 Dec-15 Mar-16 Jun-16 Sep-16 Dec-16 Mar-17 Brazil Abroad (ex-Latin America) Latin America 540 540 540 540 539 538 545 549 551 844 834 822 824 813 794 780 766 757 3,909 3,868 3,871 3,821 3,755 3,707 3,664 3,653 3,553 34 56 74 94 108 115 130 135 144 5,327 5,298 5,307 5,279 5,215 5,154 5,119 5,103 5,005 Mar-15 Jun-15 Sep-15 Dec-15 Mar-16 Jun-16 Sep-16 Dec-16 Mar-17 Branches + CSB (Latin America ex-Brazil) CSB - Brazil Brick and Mortar Branches - Brazil Digital Branches - Brazil # Employees # Branches and Client Service Branches

Itau Unibanco Holding S.A. 20 15.4% -0.7% 14.7% -0.3% 14.4% -0.2% -0.4% 13.8% 0.9% 14.7% Common Equity Tier I (CET I) Mar-17 Deductions schedule anticipation CET I with full deductions Risk-weighted assets rules anticipation CET I with fully loaded Basel III rules Anticipated effect of payout above mandatory minimum related to 1Q17 net income Impact of Citibank consolidation CET I with fully loaded Basel III rules after Citibank consolidation and payout above mandatory minimum Use of tax credits Simulated CET I with fully loaded Basel III rules including the use of tax credits Core Capital Ratio (Common Equity Tier I) 1 Includes deductions of Goodwill, Intangible Assets (generated before and after October 2013), Tax Credits from Temporary Differences and Tax Loss Carryforwards, Pension Fund Assets, Equity Investments in Financial Institutions, Insurance and similar companies. 2 Includes the increase of the multiplier of the amounts of market risk, operational risk and certain credit risk accounts. This multiplier, which is at 10.8 nowadays, will be 12.5 in 2019. 3 The consolidation of Citibank considers the retail business (for individuals) in Brazil. Estimated impact based on preliminary information and pending regulatory approvals. 4 Does not consider any reversal of complementary allowance for loan losses. 2 Changes in the Core Capital Ratio 1 15.8% -0.7% -0.7% 0.8% -0.1% 0.1% 0.1% 0.1% 15.4% Common Equity Tier I Dec-16 Deductions increase in accordance with Basel III schedule Additional payment of interest on capital in March 2017 1Q17 Net Income Dividends, interest on capital and other changes in stockholdersf equity Goodwill and Intangible Assets Tax Credits Credit, Market and Operational Riskweighted Assets Common Equity Tier I Mar-17 3 4 Full application of Basel III rules „ March 31, 2017

Itaú Unibanco Holding S.A. 21 2017 Forecast 1 Considers exchange rate of R$3.50 at Dec-17; 2 Includes units abroad ex-Latin America; 3 Includes endorsements, sureties and private securities; 4 Provision for Loan Losses Net of Recovery of Loans Written Off as Losses and Impairment; 5 Commissions and Fees (+) Income from Insurance, Pension Plan and Premium Bonds Operations (-) Expenses for Claims (-) Insurance, Pension Plan and Premium Bonds Selling Expenses. Consolidated forecast was calculated based on consolidated pro forma financial information, which considers Itaú CorpBanca´s consolidation as of 1Q16. Total Credit Portfolio 3 From 0.0% to 4.0% From -2.0% to 2.0% Financial Margin with Clients (ex-Impairment) From -4.0% to -0.5% From -5.0% to -1.5% Result from Loan Losses and Impairment 4 Between R$14.5 bn and R$17.0 bn Between R$12.5 bn and R$15.0 bn Commissions and Fees and Result from Insurance Operations 5 From 0.5% to 4.5% From 0.0% to 4.0% Non-Interest Expenses From 1.5% to 4.5% From 3.0% to 6.0% Consolidated 1 Brazil 1, 2

Itau Unibanco Holding S.A. 22 In R$ millions 1Q17 4Q16 Managerial Financial Margin 17,122 18,576 (1,455) -7.8% Financial Margin with Clients 15,254 16,583 (1,330) -8.0% Financial Margin with Clients (ex-Discounts Granted) 15,547 16,862 (1,315) -7.8% Discounts Granted (293) ( 278) (15) 5.4% Financial Margin with the Market 1,868 1,993 ( 125) -6.3% Result from Loan Losses and Impairment ( 4,988) (6,074) 1,086 -17.9% Provision for Loan Losses (5,392) (5,823) 431 -7.4% Impairment (444) (1,255) 810 -64.6% Recovery of Loans Written Off as Losses 849 1,004 ( 155) -15.4% Net Result from Financial Operations 12,134 12,502 (369) -2.9% Other Operating Income/(Expenses) (3,164) (4,136) 972 -23.5% Commissions and Fees 7,844 7,980 ( 136) -1.7% Result from Insurance, Pension Plan and Premium Bonds Operations 1,597 1,596 1 0.1% Non-interest Expenses ( 11,001) (11,927) 926 -7.8% Tax Expenses for ISS, PIS, Cofins and Other Taxes (1,604) (1,786) 182 -10.2% Income before Tax and Minority Interests 8,970 8,366 604 7.2% Income Tax and Social Contribution ( 2,767) ( 2,711) (56) 2.1% Minority Interests in Subsidiaries (27) 162 ( 190) - Recurring Net Income 6,176 5,817 358 6.2% Efficiency Ratio 44.1% 45.2% Risk-Adjusted Efficiency Ratio 64.1% 68.3% Annualized average rate of financial margin with clients 10.1% 10.6% Annualized average rate of risk adjusted financial margin with clients 6.7% 6.6% change Managerial Income Statement | New Model Introducing the disclosure ¡§Discounts Granted¡¨ in the Managerial Income Statement: „Ï Discounts Granted resulting from credit negotiations with negative impact on the outstanding accounting balance; „Ï In 1Q17, ¡§Discounts Granted¡¨ was disclosed as a component of the financial margin with clients; „Ï From 2Q17 on, ¡§Discounts Granted¡¨ will be presented as a component of ¡§Cost of Credit¡¨, composed by the Result from Loan Losses, Impairment and Discounts Granted. In R$ millions 1Q17 4Q16 Managerial Financial Margin 1 7,415 18,855 (1,440) -7.6% Financial Margin with Clients 15,547 16,862 (1,315) -7.8% Financial Margin with the Market 1 ,868 1 ,993 (125) -6.3% Cost of Credit (5,281) (6,352) 1,071 -16.9% Provision for Loan Losses (5,392) (5,823) 431 -7.4% Impairment ( 444) (1,255) 810 -64.6% Discounts Granted ( 293) ( 278) (15) 5.4% Recovery of Loans Written Off as Losses 849 1 ,004 (155) -15.4% Net Result from Financial Operations 12,134 12,502 (369) -2.9% Other Operating Income/(Expenses) (3,164) (4,136) 972 -23.5% Commissions and Fees 7 ,844 7 ,980 (136) -1.7% Result from Insurance, Pension Plan and Premium Bonds Operations 1 ,597 1 ,596 1 0.1% Non-interest Expenses (11,001) ( 11,927) 926 -7.8% Tax Expenses for ISS, PIS, Cofins and Other Taxes (1,604) (1,786) 182 -10.2% Income before Tax and Minority Interests 8,970 8,366 604 7.2% Income Tax and Social Contribution (2,767) (2,711) (56) 2.1% Minority Interests in Subsidiaries (27) 162 (190) - Recurring Net Income 6,176 5,817 358 6.2% Efficiency Ratio 43.6% 44.8% Risk-Adjusted Efficiency Ratio 64.5% 68.6% Annualized average rate of financial margin with clients 10.3% 10.8% Annualized average rate of risk adjusted financial margin with clients 6.7% 6.6% change

Itaú Unibanco Holding S.A. 23 2.4% 2.2% 2.4% 3.0% 2.8% 3.0% 4.3% 6.1% 5.4% 13.6 x 11.5 x 9.3 x 9.5 x 9.1 x 8.7 x 6.9 x 9.6 x 10.1 x 368 443 459 410 333 409 506 504 461 191 207 277 292 326 419 559 478 438 430 650 736 702 659 827 984 942 891 175.1 179.6 152.8 150.6 157.0 190.2 155.7 219.3 249.6 2009 2010 2011 2012 2013 2014 2015 2016 1Q17 B3 (ON+PN) NYSE (ADR) Average Daily Trading Volume (in R$ millions) Stock Market Performance 1 Dividends and Interest on Capital Distributed in the last 12 months of each period/average price of the non-voting shares on the first day of each period; 2 Source: Bloomberg (considered analysts expectations for the next 12 months, as of each date, and ITUB4 closing price). Market Capitalization (in R$ billions) Net DividendYield 1 Price/Earnings 2