Company: PBR
Filing Date: 2025-09-03
Form Type: 424B2
Source: 0001104659-25-086714
Chunk: 0

Company: PETROBRAS - PETROLEO BRASILEIRO SA
Filing Date: 2025-09-03
Form: 424B2
Chunk 0
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Filed Pursuant to Rule 424(b)(2)

Registration Statement Nos. 333-283981 and 333-283981-01

<div align='center'>The information in this prospectus supplement and the accompanying prospectus to which it relates is not complete and may be changed. This prospectus supplement and the accompanying prospectus to which it relates are not an offer to sell these securities and are not soliciting an offer to buy these securities in any jurisdiction where the offer or sale is not permitted.</div>

PRELIMINARY PROSPECTUS SUPPLEMENT
(SUBJECT TO COMPLETION)
DATED SEPTEMBER 3, 2025

PROSPECTUS SUPPLEMENT
(To Prospectus dated December 20, 2024)

<div align='center'>Petrobras Global Finance B.V.

Unconditionally guaranteed by

Petróleo Brasileiro S.A. — Petrobras

(Brazilian Petroleum Corporation — Petrobras)</div>

| U.S.$                           % 
 Global Notes due 20               |
| U.S.$                           % 
 Global Notes due 20               |

The % Global Notes due 20 (the “20 Notes”) and the % Global Notes due 20 (the “20 Notes” and, together with the 20 Notes, each a “series,” and collectively, the “Notes”), are general, unsecured, unsubordinated obligations of Petrobras Global Finance B.V. (“PGF”), a wholly-owned subsidiary of Petróleo Brasileiro S.A. — Petrobras (“Petrobras”). The Notes will be unconditionally and irrevocably guaranteed by Petrobras. The 20 Notes will mature on , 20 and will bear interest at the rate of % per annum. The 20 Notes will mature on , 20 and will bear interest at the rate of % per annum. Interest on the Notes is payable on and of each year, beginning on , 2026.

PGF will pay additional amounts related to the deduction of certain withholding taxes in respect of certain payments on the Notes. PGF may redeem, in whole or in part, the Notes at any time or from time to time prior to , 20 (the date that is months prior the scheduled maturity of the 20 Notes) and prior to , 20 (the date that is months prior the scheduled maturity of the 20 Notes), as applicable, by paying the greater of the principal amount of the Notes to be redeemed and the applicable “make-whole” amount, plus, in