Company: PBR
Filing Date: 2025-11-28
Form Type: 6-K
Source: 0001292814-25-004078
Chunk: 0

Company: PETROBRAS - PETROLEO BRASILEIRO SA
Filing Date: 2025-11-28
Form: 6-K
Chunk 0
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<div align='center'>UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of November, 2025

Commission File Number 001-15106

PETRÓLEO BRASILEIRO S.A. - PETROBRAS

(Exact name of registrant
as specified in its charter)

Brazilian Petroleum Corporation - PETROBRAS

(Translation of Registrant's
name into English)

Avenida Henrique Valadares, 28
20241-030 - Rio de Janeiro, RJ
Federative Republic of Brazil

(Address of principal executive
office)</div>

Indicate by check mark whether the registrant files or will file annual
reports under cover of Form 20-F or Form 40-F.

Form 20-F Form 40-F

<div align='center'>PETROBRAS ANNOUNCES REDEMPTION OF 8.750% GLOBAL NOTES DUE 2026</div>

RIO DE JANEIRO, BRAZIL – November 28, 2025 –Petróleo
Brasileiro S.A. – Petrobras (“”) (NYSE: PBR) announces that its wholly-owned subsidiary Petrobras Global
Finance B.V. (“”) has delivered notices of redemption to the holders of the outstanding 8.750% Global Notes due
2026 (the “”).

| Title of Security            | ISIN         | CUSIP     | Common Code | Aggregate Principal Amount to be Redeemed |
| 8.750% Global Notes due 2026 | US71647NAQ25 | 71647NAQ2 | N/A         | US$ 344,167,000.00                        |

The redemption date for the Notes will be December 29, 2025 (the “”).

The redemption price for the Notes will be the greater of (A) 100%
of the principal amount of such Notes and (B) the sum of the present values of the remaining scheduled payments of principal and interest
thereon (exclusive of interest accrued to the Redemption Date) discounted to the Redemption Date on a semiannual basis (assuming a 360-day
year consisting of twelve 30-day months) at the Treasury Rate plus 50 basis