PETRORIO CHANGE OF MATERIAL EQUITY INTEREST

 Petro Rio S.A. (“Company” or “PetroRio”) (B3: PRIO3), in compliance with the provisions of article 12, paragraph 5 of CVM Instruction 358/02 (and its amendments by CVM Instruction 568/15) announces that it has received from Truxt Investimentos Ltda., correspondence informing the Company they are holders of a total of 21,814,976 common shares issued by the Company, equivalent to 15.08% of PetroRio’s share capital, and that they (i) do not aim to change the composition of the Company’s control or its Management structure; (ii) are not holders of other securities, derivatives referenced in shares of the Company, other than the aforementioned, whether of physical or financial settlement; and (iii) are not part of any agreement which provides voting rights or the right to sell or purchase securities issued by the Company.