Itaú Unibanco Holding S.A.

CNPJ 60.872.504/0001-23 A Publicly Listed Company

Announcement to the Market - Senior Notes – May 2015

Itaú Unibanco Holding S.A. (“Itaú Unibanco Holding”) hereby announces that yesterday it priced the offering of US$1,000,000,000.00 aggregate principal amount of its 2.85% senior notes due May 2018 (the “Notes”). The aggregate principal amount was increased by US$ 50,000,000.00 to US$ 1,050,000,000.00 after the exercise of an extended sale option in the Asian market. The offer price of the Notes is 99.971%, resulting in a yield to investors of 2.86%.  Itaú Unibanco Holding intends to use the net proceeds of the issuance of the Notes for general corporate purposes.

The Notes have not been and will not be registered under the Securities Act of 1933, as amended (the “Securities Act”), or any other applicable law, and may not be offered or sold in the United States absent registration or an applicable exemption from the registration requirements of the Securities Act and any other applicable law.  The Notes have not been registered in Brazil with the Comissão de Valores Mobiliários in accordance with applicable law and regulations.  

The Notes were offered only to qualified institutional buyers under Rule 144A under the Securities Act, and to non-U.S. persons outside the United States under Regulation S under the Securities Act.  

This press release shall not constitute an offer to sell or the solicitation of an offer to buy the Notes, nor shall there be any sale of the Notes in any jurisdiction in which such offer, solicitation or sale would be unlawful.

São Paulo, May 19, 2015.

MARCELO KOPEL

Investor Relations Officer