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 of the Securities Exchange Act of 1934
For the month of 12 2025
Commission File Number: 001-42757
BRBI BR Partners S.A.
(Exact Name as Specified in its Charter)
N/A
(Translation of registrant’s name into English)
3,732, Floor 28, CEP 04538-132
Avenida Brigadeiro Faria Lima
São Paulo, SP, Brazil
(Address of principal executive offices)
(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: ☐
EXHIBIT INDEX
| Exhibit Number |
Description of Document | |
| 99.1 |
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
Date: December 19, 2025
| BRBI BR Partners S.A. | ||
| By: | /s/ Vinicius Carmona Cardoso | |
| Name: | Vinicius Carmona Cardoso | |
| Title: | Investor Relations Officer | |
Exhibit 99.1

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BRBI BR PARTNERS S.A.
Companhia Aberta de Capital Autorizado
CNPJ/MF nº 10.739.356/0001-03 | NIRE 35.300.366.727
Notice to the Market
BRBI BR PARTNERS S.A. (“Company”) in compliance with CVM Resolution No. 44/2021 and subsequent amendments, hereby informs its shareholders and the market in general that, on December 19, 2025, the rating agency Moody’s upgraded the National Long-Term Rating of BR Partners Banco de Investimentos S.A. (“Bank”) from “AA-” to “AA”, with a stable outlook. The agency emphasized that the upgrade reflects the increase in the group’s revenue diversification, particularly driven by the growth in non-cyclical businesses, consistently high profitability, and a long track record of ROE (net income/shareholders’ equity) ranging between 20% and 25%. The press release issued by Moody’s is available on the website:https://moodyslocal.com.br/reporte/rating-action/moodyslocal-brasil-eleva-os-ratings-de-br-partners-para-aa-br-perspectiva-estavel.
This Market Notice is for informational purposes only and should not, under any circumstances, be interpreted as an investment recommendation or as an offer to acquire any securities issued by the Company.
Sao Paulo, December 19, 2025.
BRBI BR PARTNERS S.A.
Vinicius Carmona Cardoso
Investor Relations Officer