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 December, 2022

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.

Publicly-Held Company with Authorized Capital

CNPJ/ME: 90.400.888/0001-42

NIRE: 35.300.332.067

NOTICETO THE MARKET

BANCO SANTANDER (BRASIL)S.A. (“Santander Brasil” or “Company”) announces to its shareholders and the market in general that it has proudly received the news that it will be part of the 18^h^ portfolio of the 2023 Corporate Sustainability Index (“ISE”) from January to April 2023.

The index, which is compiled by B3 – Brasil, Bolsa, Balcão, is comprised of the top performing companies in corporate sustainability. The new portfolio includes 70 shares from 70 companies.

The presence of Santander Brasil in the ISE for the 13^th^ consecutive year, in addition to its evolution in the ranking by 16 positions, confirms the Company commitment to sustainability. The Company extend its thanks to our customers, partners and employees who build the history of Santander Brasil every day, with solutions for a greener, more responsible and inclusive economy.

São Paulo, December 28, 2022.

Angel Santodomingo

CFO and Investor Relations Officer

BANCO SANTANDER (BRASIL) S.A.

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: December 28, 2022