Company: PBR
Filing Date: 2025-02-27
Form Type: 6-K
Source: 0001292814-25-000664
Chunk: 11

Company: PETROBRAS - PETROLEO BRASILEIRO SA
Filing Date: 2025-02-27
Form: 6-K
Chunk 11
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 matches the duration of the pension and health care obligations with
the future yield curve of long-term Brazilian Government Bonds; and

b) Medical and hospital costs changes rate: comprise
the projected growth rates based on per capita health care benefits paid over the last five years, which are used as a basis for projections,
converged to the general price inflation index within 30 years.

These and other actuarial assumptions are revised
at least annually and may differ materially from actual results due to changes in market and economic conditions.

The measurement uncertainties associated with the
defined benefit obligation and a sensitivity analysis of discount rates and changes in medical costs are disclosed in notes 18.3.6 and
18.3.7, respectively.

| 12 |

| INDEX |

| 4.5. | Sources of estimation uncertainty                             
 related to provisions for legal proceedings and contingencies |

The Company is part in arbitrations and in legal
and administrative proceedings involving civil, tax, labor and environmental issues arising from the normal course of its business and
makes use of estimates to recognize the amounts and the probability of outflow of resources, based on reports and technical assessments
from legal advisors and on management’s assessment.

These estimates are performed individually, or
aggregated if there are cases with similar characteristics, primarily considering factors such as assessment of the plaintiff’s
demands, consistency of the existing evidence, jurisprudence on similar cases and doctrine on the subject. Specifically for lawsuits by
outsourced employees, the Company estimates the expected loss based on a statistical procedure, due to the number of actions with similar
characteristics.

Arbitral, legal and administrative decisions against
the Company, new jurisprudence and changes of existing evidence can result in changes on the probability of outflow of resources and on
the estimated amounts, according to the assessment of the legal basis.

Note 19 provides further detailed information about
contingencies and legal proceedings.

| 4.6. | Sources of estimation uncertainty 
 related to decommissioning costs  |

The Company has legal obligations to remove equipment
and restore onshore and offshore areas at the end of operations. Its most significant asset removal obligations relate to offshore areas.
Estimates of costs for future environmental cleanup and remediation activities are based on current information about costs and expected
plans for remediation. The timing of abandonment and dismantling of areas is based on the length of reserves depletion, in accordance
with the ANP/SPE definitions (as described in note 4.1). Therefore,