Petrobras (PBR)

WHEREAS, the Trustee has provided to the Company and Petrobras Statements of Eligibility under the Trust Indenture Act of 1939, as amended, with respect to each of the Companies which have been filed as exhibits to the Registration Statement;

WHEREAS, any and all conditions and requirements necessary to make this Fourth Supplemental Indenture a valid, binding, and legal instrument in accordance with the terms of the Indenture have been performed and fulfilled and the execution and delivery of this Fourth Supplemental Indenture have been in all respects duly authorized;

WHEREAS, pursuant to Section 9.01 of the Indenture, the Trustee is authorized to execute and deliver this Fourth Supplemental Indenture; and

WHEREAS, the Company and Petrobras have requested that the Trustee execute and deliver this Fourth Supplemental Indenture;

NOW, THEREFORE, for and in consideration of the premises and the mutual covenants contained herein and in the Indenture and for other good and valuable consideration, the receipt and sufficiency of which are herein acknowledged, the Company, Petrobras and the Trustee hereby agree, for the equal and ratable benefit of all Holders, as follows: