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 July 2018

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: July 30, 2018	By:	/s/ Alexsandro Broedel
		Name:	Alexsandro Broedel
		Title:	Group Executive Finance Director and Head of Investor Relations
	By:	/s/ Caio Ibrahim David
		Name:	Caio Ibrahim David
		Title:	Chief Financial Officer

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EXHIBIT INDEX

99.1 SUMMARY OF DECISIONS - EXTRAORDINARY GENERAL STOCKHOLDERS’ MEETING

3

EX-99.1

Exhibit 99.1

São Paulo (SP), July 27, 2018.

To

BRAZILIAN SECURITIES AND EXCHANGE COMMISSION (CVM)

Superintendency of Company Relations

Rio de Janeiro – State of Rio de Janeiro (RJ)

Dear Sirs,

Subject: ITAÚ UNIBANCO HOLDING S.A. (“Company”)

EXTRAORDINARY GENERAL STOCKHOLDERS’ MEETING OF JULY 27, 2018

I. In accordance with the provisions in CVM Instruction No. 480/2009, Article 30, item III, the Company brings to your knowledge the summary of the decisions made at the Meeting mentioned above:

1. The stock split by 50% of the current 6,536,090,232 book-entry shares, with no par value, of the Company’s capital stock was approved;

2. The increase in the limit of the authorized capital, in the same proportion of the stock split by 50%, was approved;

3. The installation of the Fiscal Council on a permanent basis was approved;

4. The amendment of the Bylaws was approved, aiming at: (i) recording the new composition of the capital stock in Article 3, head provision; (ii) recording the new limit of the authorized capital in item 3.1; and (iii) providing for the permanent operation of the Fiscal Council, in Article 11; and

5. The Bylaws, with the amendments mentioned in the previous item, were consolidated.

II. Within the term established in Article 30, item IV of the above mentioned Instruction, the minutes of the Meeting will be forwarded by means of the Empresas.Net – Periodical and Occasional Information platform.

Without further ado, I undersign.

Sincerely,

ITAÚ UNIBANCO HOLDING S.A.

ALEXSANDRO BROEDEL

Group Executive Finance Director and Head of Investor Relations

cc:

- B3 S.A. – Brasil, Bolsa, Balcão

Company Monitoring Superintendency

- Company Relations Coordination Office