Exhibit 12.1
CERTIFICATION PURSUANT TO RULES 13a-14(a) AND 15d-14(a) AS ADOPTED
UNDER SECTION 302 OF THE SARBANES-OXLEY ACT
I, Maria das Graças Silva Foster, certify that:
1. I have reviewed this annual report on Form 20-F/A of Petróleo Brasileiro S.A. – Petrobras.
2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report.
| | Date: July 9, 2012 | /s/ Maria das Graças Silva Foster Maria das Graças Silva Foster Chief Executive Officer |
CERTIFICATION PURSUANT TO RULES 13a-14(a) AND 15d-14(a) AS ADOPTED
UNDER SECTION 302 OF THE SARBANES-OXLEY ACT
I, Almir Guilherme Barbassa, certify that:
1. I have reviewed this annual report on Form 20-F/A of Petróleo Brasileiro S.A. – Petrobras.
2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report.
| | Date: July 9, 2012 | /s/ Almir Guilherme Barbassa Almir Guilherme Barbassa Chief Financial Officer and Chief Investor Relations Officer |
