# EDGAR Filing Document

**Accession Number:** 0001471055
**File Stem:** 0001292814-25-002869
**Filing Date:** 2025-8
**Character Count:** 7417
**Document Hash:** 11b835e3862885d913d77ad1635a7363
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001292814-25-002869.hdr.sgml**: 20250804

**ACCESSION NUMBER**: 0001292814-25-002869

**CONFORMED SUBMISSION TYPE**: 6-K

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20250930

**FILED AS OF DATE**: 20250804

**DATE AS OF CHANGE**: 20250804

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Banco Santander (Brasil) S.A.
- **CENTRAL INDEX KEY:** 0001471055
- **STANDARD INDUSTRIAL CLASSIFICATION:** COMMERCIAL BANKS, NEC [6029]
- **ORGANIZATION NAME:** 02 Finance
- **EIN:** 000000000
- **STATE OF INCORPORATION:** D5
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 6-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-34476
- **FILM NUMBER:** 251181317

**BUSINESS ADDRESS:**
- **STREET 1:** AV. JUSCELINO KUBITSCHEK, 2235
- **STREET 2:** AV. JUSCELINO KUBITSCHEK, 2041
- **CITY:** SAO PAULO, SP
- **STATE:** D5
- **ZIP:** 04543-011
- **BUSINESS PHONE:** (55 11) 3174-8589

**MAIL ADDRESS:**
- **STREET 1:** AV. JUSCELINO KUBITSCHEK, 2235
- **STREET 2:** AV. JUSCELINO KUBITSCHEK, 2041
- **CITY:** SAO PAULO, SP
- **STATE:** D5
- **ZIP:** 04543-011

------

**UNITED STATES<br>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 August, 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 2235<br>Bloco A – Vila Olimpia<br>São Paulo, SP 04543-011<br>Federative 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): <u>N/A</u>

![](bsbr202508046k_001.jpg)

**BANCO SANTANDER (BRASIL) S.A.**

Publicly-held Company with Authorized Capital

CNPJ/MF No. 90.400.888/0001-42

NIRE 35.300.332.067

**NOTICE TO THE MARKET ON RELATED PARTY TRANSACTION** 

Banco Santander (Brasil) S.A., hereby informs the market, in compliance with Annex F of CVM Resolution No. 80, of March 29, 2022, as amended, the following about related-party transactions:

---

| | |
|:---|:---|
| &nbsp;&nbsp;**Name of the Parties** | &nbsp;&nbsp; · Banco Santander (Brasil) S.A. ("Santander")<br> · Santander Global Cards & Digital Solutions Brasil S.A. ("<u>Global Cards</u>") |
| &nbsp;&nbsp;**Description of the Transaction** | &nbsp;&nbsp;On July 25, 2025, the Parties entered into a Service Provision and/or Project Execution Agreement, through which Global Cards will provide services and/or execute projects related to the issuance and processing of cards, as well as provide technological infrastructure, including software, hardware and related services for Santander's card and payment method platform. |
| &nbsp;&nbsp;**Relationship with the issuer** | &nbsp;&nbsp; The Parties' common controlling shareholder is Banco Santander, S.A. ("Santander Spain").<br>Santander is directly controlled by Santander Spain.<br>Global Cards is a company controlled by Santander Global Cards & Digital Solutions, S.L., which in turn is controlled by Santander Spain. |
| &nbsp;&nbsp;**Purpose of the transaction** | &nbsp;&nbsp;The objective of the transaction is to provide core Card Processing services through the PLARD Technology Platform, which is hosted in the cloud and offers greater advantages compared to the current mainframe-based hosting method. The use of the PLARD Technology Platform is part of the Santander Group's global strategy, as part of its implementation of the global service platform model. |

---

![](bsbr202508046k_001.jpg)

---

| | |
|:---|:---|
| &nbsp;&nbsp;**Description of the negotiation process informing (i) who was responsible for deciding on the contract, (ii) whether the decision was taken by the competent administration body; and (iii) the administrators who participated in the decision** | &nbsp;&nbsp; Service contracting is determined by global and local committees within the Santander Group, managed by executives who participate in technical decision-making and cost approval. The contracting process between related parties took into account the criticality and relevance of the scope involved, the magnitude of the transaction, and the need to ensure the security of financial information, minimize operational impact, and ensure business continuity.<br>The transaction was conducted in compliance with the terms and conditions of Santander Brasil's Related Party Transactions Policy, particularly item 5.1., and was previously deliberated upon and approved by the Company's Audit Committee. |
| &nbsp;&nbsp;**Main Terms and Conditions** | &nbsp;&nbsp; The estimated contract value for fiscal year 2025 is approximately R$106,000,000.00 (one hundred and six million reais), based on the processing volume on the platform between January and December.<br>Compensation is determined by the volume of cards, transactions, and customers processed by the platform, and may vary according to demand.<br>The agreement is effective through December 2029. |
| &nbsp;&nbsp;**Absence of withdrawal rights** | &nbsp;&nbsp;Not applicable. |
| &nbsp;&nbsp;**Participation of the related party, its partners or administrators in the decision-making process and negotiation of the transaction** | &nbsp;&nbsp;Santander Spain, its partners or directors did not participate in the decision or negotiation of the transaction with the Parties. |
| &nbsp;&nbsp;**Reasons why the issuer´s management considers that the transaction was carried out on an arm's length basis or sets forth adequate compensation** | &nbsp;&nbsp;The transaction observed arm's length conditions, on a strictly commercial basis, duly validated according to parameters and methodologies practiced by the market and parameterized in previous transactions of the same nature. |

---

São Paulo, August 04, 2025.

*Gustavo Alejo Viviani*

*Investors Relations Officer*

**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: August 4, 2025

---

| | |
|:---|:---|
| **Banco Santander (Brasil) S.A.** | **Banco Santander (Brasil) S.A.** |
| By: | /S/ **Reginaldo Antonio Ribeiro** <br>|
|  | **Reginaldo Antonio Ribeiro<br>Officer without specific designation** ****<br>|

---

---

| | |
|:---|:---|
| By: | /S/ **Gustavo Alejo Viviani** <br>|
|  | **Gustavo Alejo Viviani <br>**Vice - President Executive Officer** ****<br>|

---

------