BSBR 6-K

UNITED STATESSECURITIES 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 June, 2025

Commission File Number: 001-34476

BANCO SANTANDER (BRASIL) S.A.

(Exact name of registrant as specified in its charter)

Avenida Presidente Juscelino Kubitschek, 2041 and 2235Bloco A – Vila OlimpiaSão Paulo, SP 04543-011Federative Republic of Brazil

(Address of principal executive office)

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 ___X___ Form 40-F _______

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):

Yes _______ No ___X____

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):

Yes _______ No ___X____

Indicate by check mark whether by furnishing the information contained in this Form, the Registrant is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934:

Yes _______ No ___X____

If “Yes” is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b):  N/A

BANCO SANTANDER (BRASIL) S.A.

Public Company with Authorized Capital

Corporate Taxpayer´s Registry No. 90.400.888/0001-42

Company Registry No. 35.300.332.067

Minutes of the Boardof Director’s Meeting

held on June 03, 2025

DATE, TIME AND PLACE: On June 03, 2025, at 5 p.m., by videoconference, the Board of Directors of Banco Santander (Brasil) S.A. (“Company” or “Santander”) have met, with the attendance of all of its members.

CALL NOTICE AND NOTICE: The call notice was dismissed due to the attendance of the Directors fully representing the Company’s Board of Directors.

MEETING BOARD: Deborah Stern Vieitas, Chairwoman. Daniel Pareto, Secretary.

AGENDA: To take resolution about: (i) the acknowledgment of the proposal to elect Mr. Nitin Prabhu as member of the Board of Directors of the Company; and (ii) the approval of the Administration Proposal to call an Extraordinary General Meetings to be held on July 04^th^, 2025, at 3:00 PM (“Administration Proposal”).

RESOLUTIONS: Made the necessary clarifications, the members of the Board of Directors, in accordance with the favorable recommendation of the Nomination and Governance Committee, unanimously:

(i) ACKNOWLEDGED the proposal to elect Mr. Nitin Prabhu as a member of the Board of Directors of the Company; and

(ii) APPROVED the Administration Proposal to call an Extraordinary General Meeting to be held on July 04^th^ , 2025, at 3:00 PM. to resolve on the following matters: (a) to fixate the number of members that will compose the Board of Directors of the Company; (b) to elect one (1) new member to compose the Board of Directors of Santander Brasil; and (c) due to the resolution in the previous item, to CONFIRM the composition of the Company’s Board of Directors

ADJOURNMENT: There being no further matters to be resolved, the Meeting was finalized, and these minutes have been prepared and send to be electronically signed by the attendees. Board: Deborah Stern Vieitas, Chairwoman. Daniel Pareto, Secretary. Signatures: Mrs. Deborah Stern Vieitas – Chairwoman; Mr. José Antonio Alvarez Alvarez – Vice Chairman; and Messrs. Cristiana Almeida Pipponzi, Cristina San Jose Brosa, Deborah Patricia Wright, Ede Ilson Viani, José de Paiva Ferreira, Mario Roberto Opice Leão, Pedro Augusto de Melo e Vanessa de Souza Lobato Barbosa – Directors. São Paulo, June 03, 2025.

I certify that this is a true transcript of the minutes recorded in the Minutes of the Board of Directors Meetings Book of the Company.

Daniel Pareto

Secretary

SIGNATURE

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, thereto duly authorized.

Date: June 3, 2025