6-K

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

Report of Foreign Issuer

Pursuant to Rule 13a-16 or 15d-16 of

the Securities Exchange Act of 1934

For the month of September 2016

Commission File Number: 001-15276

Itaú Unibanco Holding S.A.

(Exact name of registrant as specified in its charter)

Itaú Unibanco Holding S.A.

(Translation of Registrant’s Name into English)

Praça Alfredo Egydio de Souza Aranha, 100-Torre Conceicao - CEP

04344-902 São Paulo, SP, Brazil

(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):

Yes: ¨  No: x

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):

Yes: ¨  No: x

Indicate by check mark whether by furnishing the information contained in this Form, the registrant is also thereby furnishing 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):
82-___________________. 

SIGNATURES

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. 

	Itaú Unibanco Holding S.A.
		(Registrant)
Date: September 9, 2016	By:	/s/ Marcelo Kopel
		Name:	Marcelo Kopel
		Title:	Investor Relations Officer

By:	/s/ Eduardo Mazzilli de Vassimon
	Name:	Eduardo Mazzilli de Vassimon
	Title:	Chief Financial Officer

EXHIBIT INDEX

99.1 EXTRAORDINARY STOCKHOLDERS’ MEETING

EX-99.1

Exhibit 99.1

ITAÚ UNIBANCO HOLDING S.A.
CNPJ. 60.872.504/0001-23	A Publicly Listed Company
EXTRAORDINARY STOCKHOLDERS’ MEETING
Summary statement sent by the central depository

For the purposes of the terms of CVM Instruction No. 481/09, as amended, and CVM Resolution No. 741/15, discloses the summary statement of voting on the consolidation of voting instructions given by shareholders through their respective custodian agents to the central depository, identifying the number of approvals, rejections and abstentions in each item presented in the remote voting form received, including the matters submitted for resolution in the Extraordinary Stockholders’ Meeting to be held on September 14, 2016 at 3:00 p.m. The information of the summary statement of Itaú Unibanco Holding S.A., Publicly-Held Company, headquartered in the City of São Paulo, State of São Paulo, at Praça Alfredo Egydio de Souza Aranha, 100, Torre Olavo Setubal, Piso Itaú Unibanco, Parque Jabaquara, CEP 04344-902, is presented below:

Item	Description	Voting		Number of shares	% over total voting
1	To increase capital stock through the capitalization of the amounts recorded in the Company’s Revenue Reserves - Statutory Reserves, with 10% bonus shares.		approve	3,425,683	100.0000000%
			reject	-	-
			abstain	-	-
2	To increase the authorized capital limit, proportionally to the share bonus.		approve	3,380,004	98.6665725%
			reject	45.679	1.3334275%
			abstain	-	-
3	Amendment to the Bylaws in order to: (i) Reflect the new composition of capital stock;		approve	3,425,683	100.0000000%
			reject	-	-
			abstain	-	-
	(ii) Reflect the new authorized capital limit.		approve	3,371,167	98.4086093%
			reject	54.516	1.5913907%
			abstain	-	-
4	To consolidate the Bylaws, with the amendments mentioned in item “3” above and resulting adjustments to wording.		approve	3,425,683	100.0000000%
			reject	-	-
			abstain	-	-

São Paulo, September 09, 2016

MARCELO KOPEL

Investor Relations Officer