Itaú Unibanco Holding S.A.

A Publicly Listed Company CNPJ. 60.872.504/0001-23

Announcement to the Market

Trading of Own Shares for Treasury

Month: March 2015

1. On November 18, 2004, in keeping with the best Corporate Governance practice, Itaú Unibanco Holding S.A. (“Itaú Unibanco”) voluntarily disclosed its “Operating Rules for the Trading of Own Shares for Treasury”(“Rules”).

2. Item 2.1.3 of the “Rules” established the obligation to make monthly disclosure of the volumes of own shares traded on stock exchanges by Itaú Unibanco, and minimum, average and maximum prices.

3.  In this context, we wish to inform that duringMarch 2015, Itaú Unibanco acquired 2,000,000 preferred shares, the average acquisition price for which was R$ 34.07 (maximum price of R$ 34.41 and minimum of R$ 33.64).

4.  We would point out that these acquisitions relate to the share buy-back program, effective for December 16, 2014 until December 15, 2015, approved by the Board of Directors, authorizing the acquisition of up to 10.0 million of common shares and 50.0 million in preferred shares.

5.  Considering the said acquisition, it should be kept in mind that in the approved share buy-back program, we had already acquired 17,596,600 preferred shares at the average price of R$ 34.26 as shown in the following table.

	Current Repurchase		Trading	Prices – R$ per Share
	Program	Transaction	Volume	Minimum	Average	Maximum
	Dec/14		1,000,000	34.13	34.75	35.07
	Jan/15		11,000,000	33.12	34.13	34.81
Preferred Shares	Feb/15	Purchase	3,596,600	33.89	34.68	35.05
	Mar/15		2,000,000	33.64	34.07	34.41
	Total		17,596,600	33.12	34.26	35.07

6. We would remind readers that historical data is available in the organization’s Investor Relations site (www.itau-unibanco.com/investor-relations).

São Paulo-SP, April 2nd, 2015.

MARCELO KOPEL

Investor Relations Officer