Announcement to the Market - Trading of Own Shares as Treasury Stock - Month: December 2018

CNPJ 61.532.644/0001-15 A Publicly Listed Company

Announcement to the Market

Trading of Own Shares as Treasury Stock

Pursuant to the best practices of Corporate Governance, ITAÚSA - INVESTIMENTOS ITAÚ S.A., announces to the entities of the capital market that:

Trading of Own Shares for Treasury Stock

•  in the month of December 2018, ITAÚSA did not trade any of its own shares for treasury stock; and

•  in the fiscal year 2018, ITAÚSA repurchased 3,500,000 preferred shares of its own issue at minimum, average and maximum prices respectively of R$ 8.75, R$ 9.22 and R$9.95 per share, in the scope of the buyback program approved by the Board of Directors on August 07, 2017; were canceled by resolution of the Board of Directors at the meeting held on November 12, 2018.

Trading by a Controlled Companies in its Own Shares

•  also in December 2018, controlled companies DURATEX S.A. and ITAÚ UNIBANCO HOLDING S.A. did not acquire its own shares for treasury stock, but reallocated in the market the amount of 13,914 common shares and 1,653,218 preferred shares, respectively, under the stock options grant plans approved by the General Shareholders Meetings.

Historical information regarding repurchase of own shares for treasury stock of ITAÚSA is available on the Company's Investor Relations websitewww.itausa.com.br.

São Paulo (SP), January 10, 2019.

ALFREDO EGYDIO SETUBAL

Investor Relations Officer