CELULOSE IRANI S CELULOSE IRANI S.A. National Registry of Legal Entities (CNPJ) No. 92.791.243/0001- 03 NIRE No. 43300002799 PUBLIC COMPANY ACKNOWLEDGMENT TO THE SHAREHOLDERS PAYMENT OF DIVIDENDS

We communicate to the shareholders that as of September 15, 2015 we will initiate the distribution of the intermediate share approved by the Board of Directors in meeting carried through in August 20, 2015, under the terms of article 29, sole paragraph, of the Bylaws, obeying the following conditions:
1. Dividends at the rate of R$ 0.0226354, for the common shares and preferential to the shareholding detainers of shares in 08.20.2015. The intermediate shares will be made available to the shareholders exempt of income tax (IRRF), as per article 10 of Law No.
9.249/95.
2. As approved, since August 21, 2015 (inclusively) the shares are being negotiated on an ex-dividend basis.
3. Instructions on the credit of the intermediate shares:
3.1. The shareholders will have their credits available in accordance with their checking account and banking domicile supplied to Itaú Unibanco S.A. - the shares depositary institution, as of the beginning date of distribution of such right.
3.2. To the shareholders whose register does not contain the CPF/CNPJ registration number nor indication of Bank/Agency/Checking Account, the dividends will only be credited as of the third business day from the date of register update in the electronic archives of Itaú Unibanco S.A., which could be effected through any branch that offers shareholder service, or through correspondence addressed to UNIDADE DE PROCESSAMENTO E SOLUÇÕES PARA CORPORAÇÕES - Rua: Ururai, 111 - PRÉDIO B - Térreo - Tatuapé - CEP 03084-010 - São Paulo (SP).
3.3. Shareholders who are users of trustees will have their dividend credited in accordance with the procedures adopted by the Stock Exchange.
Porto Alegre, August 28, 2015.

Odivan Carlos Cargnin Administration, Finance and of Investor Relations Manager
distributed by