# EDGAR Filing Document

**Accession Number:** 0001471055
**File Stem:** 0001628280-26-029074
**Filing Date:** 2026-5
**Character Count:** 236972
**Document Hash:** 1421a0cdb995a0840363da83d853755b
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001628280-26-029074.hdr.sgml**: 20260501

**ACCESSION NUMBER**: 0001628280-26-029074

**CONFORMED SUBMISSION TYPE**: 6-K

**PUBLIC DOCUMENT COUNT**: 3

**CONFORMED PERIOD OF REPORT**: 20260331

**FILED AS OF DATE**: 20260501

**DATE AS OF CHANGE**: 20260430

**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:** 26928202

**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**

**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 April, 2026**

_____________________________________________

**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**

**Bloco A – Vila Olimpia**

**São Paulo, SP 04543-011**

**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>

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| | |
|:---|:---|
| **BANCO SANTANDER (BRASIL) S.A.**<br>**CONSOLIDATED CONDENSED FINANCIAL STATEMENTS** | **BANCO SANTANDER (BRASIL) S.A.**<br>**CONSOLIDATED CONDENSED FINANCIAL STATEMENTS** |
| **INDEX** | &nbsp;&nbsp;&nbsp;&nbsp;**Pag** |

---

---

| | |
|:---|:---|
| [Consolidated Condensed Balance Sheet](#i8d3c0718cc02434b9f7d500d1670f215) | [9](#i8d3c0718cc02434b9f7d500d1670f215) |
| [Consolidated Condensed Statements of Income](#ibe422e7ffba34ba2b12b001d0e2070c4) | [11](#ibe422e7ffba34ba2b12b001d0e2070c4) |
| [Consolidated Condensed Statements of Comprehensive Income](#i4ae942d8d8334fd0912d8e67278710b1) | [12](#i4ae942d8d8334fd0912d8e67278710b1) |
| [Consolidated Condensed Statements of Changes in Stockholders' Equity](#i0306caac3c464beea6c47c7e0f37ff09) | [13](#i0306caac3c464beea6c47c7e0f37ff09) |
| [Consolidated Condensed Statement of Cash Flows](#ief35c881cfe549ee91e445241a6d91d5) | [15](#ief35c881cfe549ee91e445241a6d91d5) |
| [1.&nbsp;&nbsp;&nbsp;&nbsp;Operating context, presentation of consolidated condensed financial statements and other information](#i912d167b1e2e4801a59f91954e3898b9) | [16](#i912d167b1e2e4801a59f91954e3898b9) |
| [2.&nbsp;&nbsp;&nbsp;&nbsp;Basis for consolidation](#ic18123dd1a1d4f53a9d136031d54ba46) | [19](#ic18123dd1a1d4f53a9d136031d54ba46) |
| [3.&nbsp;&nbsp;&nbsp;&nbsp;Financial assets](#i6de0b76959804836ad2708588bb3e4e3) | [21](#i6de0b76959804836ad2708588bb3e4e3) |
| [4.&nbsp;&nbsp;&nbsp;&nbsp;Non-current assets held for sale](#i40dfd54cfcc2400f87ac9b9dd6473103) | [23](#i40dfd54cfcc2400f87ac9b9dd6473103) |
| [5.&nbsp;&nbsp;&nbsp;&nbsp;Interests in associates and joint ventures](#i23b7788f8f5e43649ca4812f5270c2d0) | [23](#i23b7788f8f5e43649ca4812f5270c2d0) |
| [6.&nbsp;&nbsp;&nbsp;&nbsp;Fixed assets](#i86f487ca663e40c1b9d9cc595a2b5adc) | [25](#i86f487ca663e40c1b9d9cc595a2b5adc) |
| [7.&nbsp;&nbsp;&nbsp;&nbsp;Intangible assets - Goodwill](#ifc0d3da106644312a4054f9298d8e905) | [26](#ifc0d3da106644312a4054f9298d8e905) |
| [8.&nbsp;&nbsp;&nbsp;&nbsp;Intangible assets - Other intangible assets](#i629bf7e43ee24347afac67f5cf2ebd18) | [27](#i629bf7e43ee24347afac67f5cf2ebd18) |
| [9.&nbsp;&nbsp;&nbsp;&nbsp;Financial liabilities](#ib5c99b6ae37044f3a661013859037057) | [27](#ib5c99b6ae37044f3a661013859037057) |
| [10.&nbsp;&nbsp;&nbsp;&nbsp;Provision for judicial and administrative proceedings, commitments and other provisions](#i33792ce184ef4bdca1e7bfb7a749e0ad) | [30](#i33792ce184ef4bdca1e7bfb7a749e0ad) |
| [11.&nbsp;&nbsp;&nbsp;&nbsp;Stockholders' equity](#i2404c9864c5d4e5184295dbf5430d210) | [33](#i2404c9864c5d4e5184295dbf5430d210) |
| [12.&nbsp;&nbsp;&nbsp;&nbsp;Income Tax](#i6c988af640204f558fd361c5118c69a4) | [35](#i6c988af640204f558fd361c5118c69a4) |
| [13.&nbsp;&nbsp;&nbsp;&nbsp;Detailing of income accounts](#i95efe00a17df42aca349eb942126ffa6) | [37](#i95efe00a17df42aca349eb942126ffa6) |
| [14.&nbsp;&nbsp;&nbsp;&nbsp;Employee Benefit Plan](#ia7fd6ed7530b4c2bbca994001a8fa5a8) | [38](#ia7fd6ed7530b4c2bbca994001a8fa5a8) |
| [15.&nbsp;&nbsp;&nbsp;&nbsp;Operating segments](#idd84821e19844aea9e5829b93a849f60) | [41](#idd84821e19844aea9e5829b93a849f60) |
| [16.&nbsp;&nbsp;&nbsp;&nbsp;Related party transactions](#i2c5a179d2fd1449099bee7d9368af034) | [42](#i2c5a179d2fd1449099bee7d9368af034) |
| [17.&nbsp;&nbsp;&nbsp;&nbsp;Value of financial assets and liabilities](#i59c314cd897e457a9c5eecc768509370) | [45](#i59c314cd897e457a9c5eecc768509370) |
| [18.&nbsp;&nbsp;&nbsp;&nbsp;Other disclosures](#ib77e78d4a0354528b4022f9e12aabc2c) | [49](#ib77e78d4a0354528b4022f9e12aabc2c) |
| [19.&nbsp;&nbsp;&nbsp;&nbsp;Subsequent Events](#ia48340a5d9e14ba38edccf5ee46292eb) | [57](#ia48340a5d9e14ba38edccf5ee46292eb) |
| [APPENDIX I – Consolidated Condensed Statement of Value Added](#i142bfebe77e945b18ecd9b14a990c38b) | [58](#i142bfebe77e945b18ecd9b14a990c38b) |
| [Composition of Management Bodies as of March 31, 2026](#ia954a4e3cd174806b9c9ab73840b0163) | [59](#ia954a4e3cd174806b9c9ab73840b0163) |

---

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**Management Report**

**Dear Shareholders:**

We present the Performance Commentary on the Condensed Consolidated Financial Statements of Banco Santander (Brasil) S.A. (Banco Santander or the Bank) for the period ended March 31, 2026, prepared in accordance with International Financial Reporting Standards (IFRS) issued by the International Accounting Standards Board (IASB) and the interpretations of the IFRS Interpretation Committee (current name of the International Financial Reporting Interpretations Committee (IFRIC).

The Consolidated Financial Statements prepared in accordance with the international accounting standard issued by the International Accounting Standards Board (IASB) for the quarter ended March 31, 2026, will be published on April 29, 2026, at www.santander.com.br/ri.

**Economic Situation**

The economic performance was highlighted by the following themes:

**In the international environment**

❖**The global economy remains resilient, but is experiencing a supply shock and increased uncertainty.**

The global economy began 2026 with greater resilience than expected, with activity still positive in major economies and relatively tight labor markets, although at a less robust pace than in 2025. This initial performance supported the reading of a gradual slowdown, with the United States, China, and the euro area maintaining positive growth, albeit heterogeneously. Throughout Q1 2026, however, the global environment changed. The escalation of the conflict in the Middle East generated a new energy shock, putting pressure on commodities, logistics costs, and current inflation, in addition to increasing financial volatility and trade uncertainty. As a result, the balance of risks for global growth deteriorated, while the disinflation trajectory began to appear less linear, especially in advanced economies. The shock reignited the dilemma for central banks between lower growth and higher inflation, leading the IMF to signal downward revisions to global growth in 2026.

❖**Oil at the heart of global macro dynamics** 

The main driver of the first quarter of 2026 was the intensification of the conflict in the Middle East, especially the direct involvement of Iran, which resulted in a significant shock to the global energy market. The disruption in the Strait of Hormuz—a strategic route for about 20% of the world's oil—significantly increased the perceived risk to global supply, placing oil back at the center of international macroeconomic dynamics. In this context, Brent crude accumulated a gain of over 35% during the year, prompting warnings from multilateral organizations about the risk of more prolonged supply constraints and persistent inflationary effects. The rise in oil prices began to put pressure on current inflation, contaminate expectations, reduce real income, and weaken activity, especially in energy-importing economies. The shock reintroduced an adverse supply component at a time when some advanced economies were approaching the end of disinflation, reigniting the growth-inflation dilemma faced by central banks.

❖**Central banks adopt a more cautious stance in the face of the energy shock.** 

In the field of monetary policy, the quarter was marked by greater caution from major central banks. The Federal Reserve kept its benchmark interest rate unchanged at its January and March meetings, maintaining a data-dependent stance in an environment of inflation still above target. Throughout the quarter, the Fed began to signal a less benign inflationary scenario, with higher inflation projections and less conviction regarding the eventual resumption of the rate-cutting cycle, especially after the energy shock, which added new upside risks to the scenario. The European Central Bank also kept interest rates stable and explicitly acknowledged that the escalation of the conflict in the Middle East should put pressure on inflation in the short term via energy. Overall, the global environment remained in a holding pattern: the trajectory of interest rates began to incorporate greater uncertainty in the face of an adverse supply shock.

**In the home environment**

**The Brazilian economy is set to accelerate again in early 2026 with pockets of resilience and renewed momentum.**

The Brazilian economy began 2026 in a cyclical recovery process after losing momentum in the second half of 2025. GDP in Q4 2025 advanced only 0.1% quarter-on-quarter, the second consecutive quarter of near-stagnation. However, high-frequency indicators for Q1 2026 painted a net positive picture. While the labor market remained relatively tight, consistent with significant real wage gains, it is worth highlighting the beginning of the effects of the income tax exemption for individuals, which permanently increases the disposable income of eligible families.

❖ **The improvement in inflation was interrupted.**

The turn of the year brought more favorable signs for inflation, with the IPCA (Brazilian consumer price index) over 12 months falling from 4.3% in 2025 to 3.8% by February, still above the 3% target, benefiting from currency appreciation and moderation in food prices.. However, this scenario reversed in March, when the IPCA registered a higher-than-expected increase, raising 12-month inflation to 4.1%. This movement mainly reflected strong pressure from fuel and food prices, in line with the domestic transmission of the external energy shock resulting from the war in the Middle East. Despite this, the core inflation reading remained more subdued than the headline index, indicating that underlying disinflation has not yet been fully reversed. The quarter thus highlighted an environment of more pressured current inflation and greater uncertainty regarding the speed of convergence to the target.

❖**Copom begins easing restrictions, but with greater caution and more limited room for cuts.** 

The main monetary policy event of the quarter was the start of the Selic rate reduction cycle, in a more adverse context than previously anticipated. In January, the Copom (Monetary Policy Committee) maintained the rate at 15.00% per year and signaled easing for the following meeting. In March, it implemented the first cut since May 2024, reducing the Selic rate to 14.75%, in a 25 bps adjustment—below the prevailing pricing before the escalation of the conflict in the Middle East. The Central Bank characterized the move as a calibration cycle, reflecting the worsening of the risk balance associated with the external energy shock. In the baseline scenario, the inflation projection for 2026 was raised to 3.9%, reinforcing the message that the cycle has begun, but with greater caution, less conviction regarding its extent, and enhanced vigilance over expectations and secondary pass-throughs.

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**Consolidated Performance**

In 1Q26, we maintained our focus on executing our strategy, with the ambition of becoming the leading financial platform in our customers' lives. We continue to make consistent progress in building an increasingly diversified, resilient and profitable operation, well positioned for sustainable long-term growth.

We closed the quarter with a net profit of BRL 3.8 billion, representing a decline of 7.3% QoQ and 1.9% YoY. Return on equity reached 16.0%, down 1.6 p.p. QoQ and 1.5 p.p. compared to the same period of 2025.

Total revenues increased 0.8% QoQ and 0.9% YoY. Net interest income rose 3.1% QoQ and declined 0.7% YoY. On a quarterly basis, performance was mainly driven by an improvement in market NII, reflecting lower negative sensitivity to interest rates, lower number of business days, and improved treasury results. On an annual basis, the decline reflects the negative interest rate sensitivity and lower treasury results, weighing on market NII results. Client NII declined 1.4% QoQ and increased 4.8% YoY. QoQ performance reflects fewer calendar and business days, while yearly growth was mainly driven by volume, mix and pricing discipline, contributing to spread expansion.

Fees delivered solid annual performance, increasing 5.8% YoY, supported by revenue diversification, with a more balanced contribution between credit and services, and remaining a key growth pillar. Highlights include cards (+9.8%) and insurance (+12.2%). On a quarterly basis, fees declined 5.5%, reflecting typical seasonality, particularly in cards.

The expanded loan portfolio declined 0.4% QoQ and increased 3.4% YoY, totaling BRL 705,582 million. The quarterly decline was mainly driven by seasonality in cards and FX effects. Over twelve months, growth was led by consumer finance (+14.2%), while in Individuals, mortgages (+10.6%) and cards (+9.1%) stood out, and SMEs grew 9.9% YoY. We maintain a disciplined approach to capital allocation, focused on strategic businesses, portfolio risk management and profitability.

Total funding reached BRL 743,309 million, increasing 0.6% QoQ and 2.8% YoY, maintaining our focus on a more balanced mix between Individuals and Corporate, with Individuals now representing 51% of total funding (+6 p.p. YoY).

The result from loan losses totaled BRL 6,344 million, increasing 3.9% QoQ and declining 0.7% YoY. On a quarterly basis, provisions remained pressured by the macroeconomic environment and elevated household indebtedness, while the annual decline reflects active risk management and portfolio mix effects.

Expenses remained under strict control, stable QoQ and increasing 0.9% YoY, well below inflation. We remain committed to efficient cost management and the use of technology to optimize processes and maximize productivity.

We are focused on delivering sustainable long-term results through a solid and diversified balance sheet, driven by an unwavering emphasis on excellence in customer experience

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **(R$ millions)** | **1Q26** | **4Q25** | **1Q26 x 4Q25** | **1Q25** | **1Q26 x 1Q25** |
| Gross financial margin | 15812 | 15332 | 3.1% | 15922 | (0.7)% |
| Comissions | 5435 | 5754 | (5.5)% | 5137 | 5.8% |
| &nbsp;&nbsp;**Total revenue** | 21248 | 21086 | 0.8% | 21058 | 0.9% |
| PDD Result | (6344) | (6105) | 3.9% | (6390) | (0.7)% |
| General expenses | (6633) | (6633) | —% | (6573) | 0.9% |
| Other operating income/expenses | (2300) | (2609) | (11.8)% | (2126) | 8.2% |
| Tax expenses | (1453) | (1471) | (1.2)% | (1341) | 8.3% |
| &nbsp;&nbsp;&nbsp;Others | 65 | 78 | (16.8)% | 120 | (45.9)% |
| &nbsp;&nbsp;**Profit before taxes** | 4583 | 4347 | 5.4% | 4747 | (3.5)% |
| Taxes and minority stakes | (795) | (260) | n.a. | (886) | (10.3)% |
| &nbsp;&nbsp;**Net profit management** | 3788 | 4086 | (7.3)% | 3861 | (1.9)% |
| **Accounting net profit** | **3725** | **4023** | **(7.4)%** | **3778** | **(1.4)%** |
| 1 The table above considers managerial reclassifications in relation to the Financial Income Statement, the most relevant of which refer to the reclassification between margin and result of allowance for doubtful accounts on discounts, allowance for doubtful accounts on debentures, in addition to the reversal of amortizations on goodwill. | 1 The table above considers managerial reclassifications in relation to the Financial Income Statement, the most relevant of which refer to the reclassification between margin and result of allowance for doubtful accounts on discounts, allowance for doubtful accounts on debentures, in addition to the reversal of amortizations on goodwill. | 1 The table above considers managerial reclassifications in relation to the Financial Income Statement, the most relevant of which refer to the reclassification between margin and result of allowance for doubtful accounts on discounts, allowance for doubtful accounts on debentures, in addition to the reversal of amortizations on goodwill. | 1 The table above considers managerial reclassifications in relation to the Financial Income Statement, the most relevant of which refer to the reclassification between margin and result of allowance for doubtful accounts on discounts, allowance for doubtful accounts on debentures, in addition to the reversal of amortizations on goodwill. | 1 The table above considers managerial reclassifications in relation to the Financial Income Statement, the most relevant of which refer to the reclassification between margin and result of allowance for doubtful accounts on discounts, allowance for doubtful accounts on debentures, in addition to the reversal of amortizations on goodwill. | 1 The table above considers managerial reclassifications in relation to the Financial Income Statement, the most relevant of which refer to the reclassification between margin and result of allowance for doubtful accounts on discounts, allowance for doubtful accounts on debentures, in addition to the reversal of amortizations on goodwill. |
| 2 The table above considers management reclassifications in relation to the Income Statement of the BRGAAP book. | 2 The table above considers management reclassifications in relation to the Income Statement of the BRGAAP book. | 2 The table above considers management reclassifications in relation to the Income Statement of the BRGAAP book. | 2 The table above considers management reclassifications in relation to the Income Statement of the BRGAAP book. | 2 The table above considers management reclassifications in relation to the Income Statement of the BRGAAP book. | 2 The table above considers management reclassifications in relation to the Income Statement of the BRGAAP book. |

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**Strategy and Rating Agencies**

For information regarding the Bank's strategy and ratings with rating agencies, please see the Earnings Report available at www.santander.com.br/ri.

**Corporate Governance**

The governance structure of Banco Santander comprises the Executive Board and its Executive Committee, consisting of the Chief Executive Officer, Senior Executive Vice Presidents, and Executive Vice Presidents, as well as the Board of Directors and its Advisory Committees: Audit, Risk and Compliance, Sustainability, Compensation and Nomination, and Governance.

Our Board of Directors currently has 45% female members and 55% independent members.

The additional information required by Law No. 15.177/2025 will be disclosed in the Management Report to be made available to shareholders on the date of the Ordinary General Meeting, pursuant to Article 133 of Law No. 6.404/76.

For more information on the corporate governance practices adopted by Banco Santander and resolutions of the Board of Directors, please visit www.santander.com.br/ri.

**Internal Audit**

Internal Audit reports directly to the Board of Directors, with the Audit Committee responsible for its supervision.

It has a permanent and independent function from any other function or unit, whose mission is to provide the Board of Directors and Senior Management with independent assurance on the quality and effectiveness of internal control processes and systems, risk management (current or emerging), and governance, thus contributing to the protection of the organization's value, solvency, and reputation. Internal Audit holds a quality certificate issued by the Institute of Internal Auditors (IIA).

To fulfill its functions and cover the risks inherent to Banco Santander's activity, Internal Audit has a set of internally developed tools. Among them, the risk matrix stands out, used as a planning tool, prioritizing the risk level of the auditable universe considering, among other things, its inherent risks, the latest audit rating, the degree of compliance with recommendations, and its dimension. The work programs, which describe the audit tests to be performed, are reviewed periodically.

The Audit Committee recommended approval of the audit work plan and also the Annual Internal Audit Report for the year 2026, and this was approved by the Board of Directors.

**People**

Banco Santander continues to strengthen its organizational culture, which seeks to contribute to the prosperity of people and businesses. Autonomy, leadership, and innovation are gaining ground, accelerating digital transformation and improving personalized offerings for the most diverse segments of society.

We have 49,107 employees across the entire Group, committed to the ambition of creating unique and personalized customer experiences, so that we become the primary bank for each of our clients.

To achieve this, the bank continuously invests in creating an environment where leadership is a benchmark for the organization's values, an inclusive culture ensures that each professional feels recognized and engaged in building their career, health and well-being are central, and continuous learning serves the constant improvement of the customer journey and the development of each employee. Opportunities for growth are democratized and accessible to all.

**Sustainability**

Our journey in sustainability began more than 20 years ago. Throughout this semester, we have experienced an intense evolution, in which we have improved our programs, business, and governance related to this topic.

Throughout this journey, key aspects include the assessment and mitigation of social, environmental, and climate risks for granting credit to projects and companies; the generation of businesses that support clients' transition to a low-carbon economy; and the building of a more inclusive society through education and employability initiatives, financial inclusion and entrepreneurship, and social inclusion. Many of these initiatives are accompanied by global goals in areas where we have the greatest potential impact, such as net zero, financial inclusion, and inclusive culture.

To ensure good governance of this process, we rely on robust policies and controls, supported by senior leadership.

In Q1 2026, we highlight the following results:

<br>Sustainable business

❖ We have enabled R$10.8 billion in sustainable business deals, according to our sustainable finance and investment rating system (SFICS), reaching a total of R$52.4 billion in the sustainable credit portfolio, with growth of 30% YoY.

❖ We maintained our market leadership in CBIOS (carbon credits) with 38% market share.

The Prospera Santander Microfinanças program, which provides financial solutions to entrepreneurs, achieved a microcredit output of R$1.27 billion (3% YoY). The total portfolio grew by 9% YoY, reaching R$3.53 billion, with a total customer base of 1.2 million.

❖Also noteworthy is the issuance of R$200 million in debentures to OLEOPLAN S.A. - ÓLEOS VEGETAIS PLANALTO, using resources from EcoInvest, a Brazilian government program for mobilizing foreign private capital and providing exchange rate protection, created to facilitate the attraction of foreign private investment for the country's ecological transformation. The funds will be used for the modernization and expansion of two biodiesel production plants.

**Social impact**

Through the Pensar program, we carried out financial literacy initiatives in public schools for high school students. The initiative involved 66 volunteers and 600 beneficiaries.

The Santander Integrated Social Project provided educational and cultural activities in 30 municipalities, in addition to training programs for local micro-entrepreneurs, in partnership with Prospera.

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**Education, employability and entrepreneurship**

We highlight two initiatives focused on education and digital inclusion: the Santander Open Academy, a global platform offering courses, scholarships, and international career development opportunities, and the Digital Campus, a solution that supports the digitalization of universities through an application that creates a secure digital identity and integrates students, professors, and academic services. Together, these initiatives have benefited approximately 145,000 people, with an investment of 2.9 million in the community.

We held the 15th edition of the Santander SW50 program, an international initiative by The London School of Economics and Political Science (LSE) focused on developing women leaders. The program had participants from 11 countries, totaling approximately 6,000 people, with more than 2,000 from Brazil.

We also promote the Santander Jornada Tech – AWS, a partnership with Amazon Web Services, which offers a training track in cloud computing and artificial intelligence. The program had 33,000 applicants and offered 22,000 places, with the 50 best-performing participants receiving AWS Foundation certification

**Reports and indexes**

We have published our 2025 Integrated Annual Report, a document that presents our strategy, business model and financial performance, as well as key advancements in governance, risk management and sustainability. Access the full report on our Investor Relations website.

**Independent Audit**

The policy of Banco Santander, including its subsidiaries, regarding the contracting of services unrelated to the audit of Financial Statements by its independent auditors PricewaterhouseCoopers, is based on Brazilian and international auditing standards, which preserve the auditor's independence. This basis stipulates the following: (i) the auditor must not audit his own work, (ii) the auditor must not perform managerial functions at its client, (iii) the auditor must not promote the interests of their client, and (iv) the need for approval of any services by the Bank's Audit Committee.

In compliance with Brazilian Securities and Exchange Commission Instruction No. 162/2022, Banco Santander informs that in the quarter ended March 31, 2026, PricewaterhouseCoopers did not provide any services unrelated to the independent audit of the Financial Statements of Banco Santander and relevant subsidiaries that could generate a conflict of interest, loss of independence, or impact the objectivity of its independent auditors. PricewaterhouseCoopers has procedures, policies, and controls in place to ensure its independence, which include an assessment of the work performed, encompassing any service that is not an independent audit of the Financial Statements of Banco Santander and its

**Acknowledgments**

We thank our customers, shareholders, and employees for the trust and support that have driven us to this point, and which have enabled the continuation of our history of evolution and transformation, on the path to building the Best Consumer Company in Brazil.

(Approved at the Board of Directors Meeting of April 28, 2026).

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![image1.jpg](image1.jpg)

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**Consolidated Condensed Balance Sheet**

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| | | | |
|:---|:---|:---|:---|
| **ASSETS** | **Note** | **03/31/2026** | 12/31/2025 |
| **Cash** |  | **25247371** | **20232729** |
| **Financial Assets Measured At Fair Value Through Profit Or Loss** | **3.a** | **276202118** | **262407149** |
| Debt instruments |  | 85759454 | 95546026 |
| Equity instruments |  | 5384000 | 4862393 |
| Derivatives | 18 | 57706835 | 65590206 |
| Loans and advances to customers |  | 5813076 | 6413587 |
| Balances with the Brazilian Central Bank |  | 121538753 | 89994937 |
| **Financial Assets Measured At Fair Value Through Other Comprehensive Income** | **3.a** | **58627846** | **69446583** |
| Debt instruments |  | 58625705 | 69354220 |
| Equity instruments |  | 2141 | 92363 |
| **Financial Assets Measured At Amortized Cost** | **3.a** | **812836311** | **800545822** |
| Loans and amounts due from credit institutions |  | 43445545 | 35947923 |
| Loans and advances to customers |  | 551050161 | 558134969 |
| Debt instruments |  | 125511043 | 114708615 |
| Reserves at the Central Bank of Brazil |  | 92829562 | 91754315 |
| **Derivatives Used as Hedge Accounting** | **18** | **41989** | **217492** |
| **Non-Current Assets Held For Sale** | **4** | **1476548** | **1413215** |
| **Investments in Associates and Joint Ventures** | **5.a** | **3609592** | **3517094** |
| **Tax Assets** |  | **65424261** | **65060517** |
| Current |  | 14000309 | 14205687 |
| Deferred |  | 51423952 | 50854830 |
| **Other Assets** |  | **12224833** | **8915748** |
| **Tangible Assets** | **6.a** | **5035157** | **5046133** |
| **Intangible Assets** |  | **33138812** | **33226983** |
| Goodwill | 7 | 27802697 | 27844674 |
| Other intangible assets | 8 | 5336115 | 5382309 |
| **Total Assets** |  | **1293864838** | **1270029465** |

---

The accompanying notes from Management are an integral part of the Consolidated Condensed Financial Statements.

------

---

| | | | |
|:---|:---|:---|:---|
| **LIABILITIES AND STOCKHOLDERS' EQUITY** | | | |
|  | **Note** | **03/31/2026** | 12/31/2025 |
| **Financial Liabilities Measured At Fair Value Through Profit Or Loss Held For Trading** | **9.a** | **114208211** | **112471311** |
| &nbsp;&nbsp;Trading derivatives | 18 | 53231267 | 59827986 |
| &nbsp;&nbsp;Short positions |  | 60327958 | 49380059 |
| &nbsp;&nbsp;Marketable debt securities |  | 648986 | 3263266 |
| **Financial Liabilities Measured at Amortized Cost** | **9.a** | **1014775406** | **992386546** |
| &nbsp;&nbsp;Deposits from Brazilian Central Bank and deposits from credit institutions |  | 150159591 | 146867521 |
| &nbsp;&nbsp;Customer deposits |  | 598847181 | 593328796 |
| &nbsp;&nbsp;Marketable debt securities |  | 159679782 | 156662290 |
| &nbsp;&nbsp;Debt instruments eligible to compose capital |  | 29338672 | 28113937 |
| &nbsp;&nbsp;Other financial liabilities |  | 76750180 | 67414002 |
| **Derivatives Used as Hedge Accounting** | **18** | **24960** | **184005** |
| **Provisions** | **10.a** | **12329865** | **11804482** |
| &nbsp;&nbsp; Provisions for pension funds and similar obligations |  | 1308005 | 1357203 |
| &nbsp;&nbsp; Provisions for judicial and administrative proceedings, commitments and other provisions | &nbsp;&nbsp; Provisions for judicial and administrative proceedings, commitments and other provisions | 11021860 | 10447279 |
| **Tax Liabilities** |  | **8762614** | **9388832** |
| &nbsp;&nbsp;Current |  | 4143111 | 4799733 |
| &nbsp;&nbsp;Deferred |  | 4619503 | 4589099 |
| **Other Liabilities** |  | **15492679** | **17241145** |
| **Total Liabilities** |  | **1165593735** | **1143476321** |
| **Stockholders' Equity** |  | **131439673** | **130281588** |
| Share Capital | 11.a | 65000000 | 65000000 |
| Reserves | 11.c | 472443 | 630238 |
| Treasury shares | 11.d | (492521) | (719560) |
| Profit Reserve | 11.c | 66459751 | 65370910 |
| **Other Comprehensive Income** |  | **(5043760)** | **(5108058)** |
| **Stockholders' Equity Attributable to the Parent** |  | **126395913** | **125173530** |
| **Non - Controlling Interests** |  | **1875190** | **1379614** |
| **Total Stockholders' Equity** |  | **128271103** | **126553144** |
| **Total Liabilities and Stockholders' Equity** |  | **1293864838** | **1270029465** |

---

The accompanying notes from Management are an integral part of the Consolidated Condensed Financial Statements.

------

**Consolidated Condensed Statements of Income** 

---

| | | | |
|:---|:---|:---|:---|
| | **Notes** | | |
| | **Notes** | **01/01 a**<br>**03/31/2026** | 01/01 a<br>03/31/2025 |
| Interest and similar income |  | 42434402 | 38750552 |
| Interest expense and similar charges |  | (26324712) | (23924821) |
| **Net Interest Income** |  | **16109690** | **14825731** |
| Income from equity instruments |  | 12698 | 27007 |
| Income from companies accounted by the equity method | 5.a | 124743 | 86615 |
| Fee and commission income |  | 6370221 | 6061108 |
| Fee and commission expense |  | (2185220) | (1848844) |
| Gains (losses) on financial assets and liabilities (net) |  | 11554451 | 2495916 |
| &nbsp;&nbsp;&nbsp;&nbsp;Financial assets measured at fair value through profit or loss |  | 11150593 | 3412992 |
| &nbsp;&nbsp;&nbsp;&nbsp;Financial instruments not measured at fair value through profit or loss |  | (1041967) | 25136 |
| &nbsp;&nbsp;&nbsp;&nbsp;Other |  | 1445825 | (942212) |
| Exchange differences (net) |  | (12517189) | (2278618) |
| Other operating expense |  | (187498) | (197862) |
| **Total Income** |  | **19281896** | **19171053** |
| Administrative expenses |  | (5330060) | (5245105) |
| &nbsp;&nbsp;&nbsp;&nbsp;Personnel expenses | 13.a | (2881876) | (3012355) |
| &nbsp;&nbsp;&nbsp;&nbsp;Other administrative expenses | 13.b | (2448184) | (2232750) |
| Depreciation and amortization |  | (663281) | (703335) |
| &nbsp;&nbsp;&nbsp;&nbsp;Tangible assets | 6.a | (240936) | (330886) |
| &nbsp;&nbsp;&nbsp;&nbsp;Intangible assets | 8 | (422345) | (372449) |
| Provisions (net) |  | (1267678) | (1294397) |
| Impairment losses on financial assets (net) |  | (7308745) | (7264611) |
| &nbsp;&nbsp;&nbsp;&nbsp;Financial instruments measured at amortized cost | 3.b.2 | (7308745) | (7264611) |
| Impairment losses on other assets (net) |  | (35550) | (91127) |
| &nbsp;&nbsp;Other assets |  | (35550) | (91127) |
| Gains (losses) on disposal of assets not classified as non-current assets held for sale |  | 18683 | 11351 |
| Gains (losses) on non-current assets held for sale not classified as discontinued operations | Gains (losses) on non-current assets held for sale not classified as discontinued operations | 14820 | 36038 |
| **Operating Income Before Tax** |  | **4710085** | **4619867** |
| Income taxes | 12 | (1428535) | (1468284) |
| **Net Profit for the Period** |  | **3281550** | **3151583** |
| Profit attributable to the Parent |  | 3217994 | 3108800 |
| Profit attributable to non-controlling interests |  | 63556 | 42783 |

---

The accompanying notes from Management are an integral part of the Consolidated Condensed Financial Statements.

------

**Consolidated Condensed Statements of Comprehensive Income**

---

| | | |
|:---|:---|:---|
| | **01/01 to**<br>**03/31/2026** | 01/01 to<br>03/31/2025 |
| **Profit for the Period** | **3281550** | **3151583** |
| **<br>Other Comprehensive Income that will be subsequently reclassified for profit or loss when specific conditions are met:** | **55379** | **(68248)** |
| **Financial assets measured at fair value through other comprehensive income** | **(124563)** | **(34032)** |
| Financial assets measured at fair value through other comprehensive income | (230469) | 278761 |
| Taxes | 105906 | (312793) |
| **Cash flow hedges** | **179942** | **(34214)** |
| Valuation adjustments | 343122 | (65239) |
| Taxes | (163180) | 31025 |
| **Other Comprehensive Income that won't be reclassified for Net income:** | **8919** | **1151153** |
| **Defined benefits plan** | **-** | **1170858** |
| Defined benefits plan | - | 2164778 |
| Taxes | - | (993920) |
| **Others** | **8919** | **(19705)** |
| IFRS 17 adjustments | 14865 | (32842) |
| Taxes | (5946) | 13137 |
| **Total Comprehensive Income** | **3345848** | **4234488** |
| Attributable to the parent | 3282292 | 4191705 |
| Attributable to non-controlling interests | 63556 | 42783 |
| **Total** | **3345848** | **4234488** |

---

The accompanying notes from Management are an integral part of the Consolidated Condensed Financial Statements.

------

**Consolidated Condensed Statements of Changes in Stockholders' Equity**

---

| | | | | | | | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| | **Note** | **Share <br>Capital** | **Capital Reserve** | **Profit Reserve** | **Treasury<br>Shares** | **Retained earnings** | **Financial Assets Measured At Fair Value Through Other Comprehensive Income** | **Defined Benefits plan** | **Translation adjustments investment abroad** | **Adjustments IFRS 17** | **Other Asset Valuation Adjustments** | **Gains and losses - Cash flow hedge and Investment** | **Total** | **Non-controlling<br>Interests** | **Total Stockholders´<br>Equity** |
| **Balance on December 31, 2024** |  | **65000000** | **630011** | **61453920** | **(884707)** | **—** | **(2401289)** | **(3998814)** | **859370** | **(11291)** | **(275465)** | **(880050)** | **119491685** | **335447** | **119827132** |
| **Total comprehensive income** |  | - | - | - | - | **11591014** | **1125791** | **782787** | **-** | **(1159)** | **-** | **(307938)** | **13190495** | **199088** | **13389583** |
| Net profit attributable to the Parent Company |  | - | - | - | - | 12766035 | **-** | **-** | **-** | - | - | **-** | 12766035 | 199088 | 12965123 |
| **Other comprehensive income** |  | - | - | - | - | **(1175021)** | **1125791** | **782787** | **-** | **(1159)** | **-** | **(307938)** | **424460** | **-** | **424460** |
| Financial assets measured at fair value through other comprehensive income (1) |  | - | - | - | - |  | 1125791 | - | **-** | - | - | **-** | 1125791 | - | 1125791 |
| Employee Benefits Plan (2) | 18.b.2 | - | - | - | - | (1175021) | - | 782787 | **-** | - | - | **-** | (392234) | - | (392234) |
| Adjustments IFRS 17 |  | - | - | - | - |  | **-** | **-** | **-** | (1159) | - | **-** | (1159) | - | (1159) |
| Gain and loss - Cash flow and investment hedge |  | - | - | - | - |  | **-** | **-** | **-** | - | - | (307938) | (307938) | - | (307938) |
| Dividends and Interest on Equity | 11.b | - | - | - | - | (7620000) | **-** | **-** | **-** | - | - | **-** | (7620000) | - | (7620000) |
| Share-based compensation | 11.d | - | 227 | - | - |  | **-** | **-** | **-** | - | - | **-** | 227 | - | 227 |
| Treasury shares | 11.d | - | - | - | 165147 |  | **-** | **-** | **-** | - | - | **-** | 165147 | - | 165147 |
| Prescribed Dividends |  | - | - | 42566 | - |  | **-** | **-** | **-** | - | - | **-** | 42566 | - | 42566 |
| Unrealized profit |  | - | - | - | - |  | **-** | **-** | **-** | - | - | **-** | - | - | - |
| Capital Increase |  | - | - | - | - |  | **-** | **-** | **-** | - | - | **-** | - | - | - |
| **Others** |  | **-** | **-** | **(96590)** | **-** | **-** | **-** | **-** | **-** | **-** | **-** | **-** | **(96590)** | **845079** | **748489** |
| &nbsp;&nbsp;&nbsp;Sale / Incorporation / Acquisition |  | - | - | - | - |  | **-** | **-** | **-** | - | - | **-** | - | 876233 | 876233 |
| &nbsp;&nbsp;&nbsp;Other |  | - | - | (96590) | - |  | **-** | **-** | **-** | - | - | **-** | (96590) | (31154) | (127744) |
| **Destinations:** |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp; Legal reserve |  | - | - | 638302 | - | (638302) | - | - | - | - | - | - | - | - | - |
| &nbsp;&nbsp;&nbsp;&nbsp; Dividend equalization reserve |  | - | - | 3332712 | - | (3332712) | - | - | - | - | - | - | - | - | - |
| **Balances on December 31, 2025** |  | **65000000** | **630238** | **65370910** | **(719560)** | **-** | **(1275498)** | **(3216027)** | **859370** | **(12450)** | **(275465)** | **(1187988)** | **125173530** | **1379614** | **126553144** |
| **Changes in the Period** |  | **-** | **227** | **3916990** | **165147** | **-** | **1125791** | **782787** | **-** | **(1159)** | **-** | **(307938)** | **5681845** | **1044167** | **6726012** |
| (1) Includes the effects of the classification relating to the change in the business model (Note 1.C4) | (1) Includes the effects of the classification relating to the change in the business model (Note 1.C4) | (1) Includes the effects of the classification relating to the change in the business model (Note 1.C4) | (1) Includes the effects of the classification relating to the change in the business model (Note 1.C4) | (1) Includes the effects of the classification relating to the change in the business model (Note 1.C4) | (1) Includes the effects of the classification relating to the change in the business model (Note 1.C4) | (1) Includes the effects of the classification relating to the change in the business model (Note 1.C4) | (1) Includes the effects of the classification relating to the change in the business model (Note 1.C4) | (1) Includes the effects of the classification relating to the change in the business model (Note 1.C4) | (1) Includes the effects of the classification relating to the change in the business model (Note 1.C4) | (1) Includes the effects of the classification relating to the change in the business model (Note 1.C4) | (1) Includes the effects of the classification relating to the change in the business model (Note 1.C4) | (1) Includes the effects of the classification relating to the change in the business model (Note 1.C4) | (1) Includes the effects of the classification relating to the change in the business model (Note 1.C4) | (1) Includes the effects of the classification relating to the change in the business model (Note 1.C4) | (1) Includes the effects of the classification relating to the change in the business model (Note 1.C4) |
| (2) Permanent losses associated with Benefit Plans were transferred to Retained Earnings and Losses. | (2) Permanent losses associated with Benefit Plans were transferred to Retained Earnings and Losses. | (2) Permanent losses associated with Benefit Plans were transferred to Retained Earnings and Losses. | (2) Permanent losses associated with Benefit Plans were transferred to Retained Earnings and Losses. | (2) Permanent losses associated with Benefit Plans were transferred to Retained Earnings and Losses. | (2) Permanent losses associated with Benefit Plans were transferred to Retained Earnings and Losses. | (2) Permanent losses associated with Benefit Plans were transferred to Retained Earnings and Losses. | (2) Permanent losses associated with Benefit Plans were transferred to Retained Earnings and Losses. | (2) Permanent losses associated with Benefit Plans were transferred to Retained Earnings and Losses. | (2) Permanent losses associated with Benefit Plans were transferred to Retained Earnings and Losses. | (2) Permanent losses associated with Benefit Plans were transferred to Retained Earnings and Losses. | (2) Permanent losses associated with Benefit Plans were transferred to Retained Earnings and Losses. | (2) Permanent losses associated with Benefit Plans were transferred to Retained Earnings and Losses. | (2) Permanent losses associated with Benefit Plans were transferred to Retained Earnings and Losses. | (2) Permanent losses associated with Benefit Plans were transferred to Retained Earnings and Losses. | (2) Permanent losses associated with Benefit Plans were transferred to Retained Earnings and Losses. |
| Reserves are distributed according to the corporate criteria of local legislation. | Reserves are distributed according to the corporate criteria of local legislation. | Reserves are distributed according to the corporate criteria of local legislation. | Reserves are distributed according to the corporate criteria of local legislation. | Reserves are distributed according to the corporate criteria of local legislation. | Reserves are distributed according to the corporate criteria of local legislation. | Reserves are distributed according to the corporate criteria of local legislation. | Reserves are distributed according to the corporate criteria of local legislation. | Reserves are distributed according to the corporate criteria of local legislation. | Reserves are distributed according to the corporate criteria of local legislation. | Reserves are distributed according to the corporate criteria of local legislation. | Reserves are distributed according to the corporate criteria of local legislation. | Reserves are distributed according to the corporate criteria of local legislation. | Reserves are distributed according to the corporate criteria of local legislation. | Reserves are distributed according to the corporate criteria of local legislation. | Reserves are distributed according to the corporate criteria of local legislation. |
| The accompanying notes from Management are an integral part of the Consolidated Condensed Financial Statements. | The accompanying notes from Management are an integral part of the Consolidated Condensed Financial Statements. | The accompanying notes from Management are an integral part of the Consolidated Condensed Financial Statements. | The accompanying notes from Management are an integral part of the Consolidated Condensed Financial Statements. | The accompanying notes from Management are an integral part of the Consolidated Condensed Financial Statements. | The accompanying notes from Management are an integral part of the Consolidated Condensed Financial Statements. | The accompanying notes from Management are an integral part of the Consolidated Condensed Financial Statements. | The accompanying notes from Management are an integral part of the Consolidated Condensed Financial Statements. | The accompanying notes from Management are an integral part of the Consolidated Condensed Financial Statements. | The accompanying notes from Management are an integral part of the Consolidated Condensed Financial Statements. | The accompanying notes from Management are an integral part of the Consolidated Condensed Financial Statements. | The accompanying notes from Management are an integral part of the Consolidated Condensed Financial Statements. | The accompanying notes from Management are an integral part of the Consolidated Condensed Financial Statements. | The accompanying notes from Management are an integral part of the Consolidated Condensed Financial Statements. | The accompanying notes from Management are an integral part of the Consolidated Condensed Financial Statements. | The accompanying notes from Management are an integral part of the Consolidated Condensed Financial Statements. |

---

------

---

| | | | | | | | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| | **Note** | **Share<br>Capital** | **Capital Reserve** | **Profit Reserve** | **Treasury<br>Shares** | **Retained earnings** | **Financial Assets Measured At Fair Value Through Other Comprehensive Income** | **Defined Benefits plan** | **Translation adjustments investment abroad** | **Persion Contracts IFRS 17** | **Other Equity Valuation Adjustments** | **Gains and losses - Cash flow hedge and Investment** | **Total** | **Non-controlling<br>Interests** | **Total Stockholders´<br>Equity** |
| **Balance on December 31, 2025** |  | **65000000** | **630238** | **65370910** | **(719560)** | **-** | **(1275498)** | **(3216027)** | **859370** | **(12450)** | **(275465)** | **(1187988)** | **125173530** | **1379614** | **126553144** |
| **Total comprehensive income** |  | **-** | **-** | **-** | **-** | **3217994** | **(124563)** | **-** | **-** | **8919** | **-** | **179942** | **3282292** | **63556** | **3345848** |
| Net profit attributable to the Parent Company |  | - | - | - | - | 3217994 | - | - | - | - | - | - | 3217994 | 63556 | 3281550 |
| Other comprehensive income |  | - | - | - | - | - | (124563) | - | - | 8919 | - | 179942 | 64298 | - | 64298 |
| Financial assets measured at fair value through other comprehensive income |  | - | - | - | - | - | (124563) | - | - | - | - | - | (124563) | - | (124563) |
| Adjustments IFRS 17 |  | - | - | - | - | - | - | - | - | 8919 | - | - | 8919 | - | 8919 |
| &nbsp;&nbsp;&nbsp;&nbsp;Gain and loss - Cash flow and investment hedge |  | - | - | - | - | - | - | - | - | - | - | 179942 | 179942 | - | 179942 |
| Dividends and interest on capital | 11.b | - | - | - | - | (2000000) | - | - | - | - | - | - | (2000000) | - | (2000000) |
| Share-based compensation | 11.d | - | (157795) | - | - | - | - | - | - | - | - | - | (157795) | - | (157795) |
| Treasury shares | 11.d | - | - | - | 227039 | - | - | - | - | - | - | - | 227039 | - | 227039 |
| Prescribed dividends |  | - | - | 8198 | - | - | - | - | - | - | - | - | 8198 | - | 8198 |
| **Others** |  | **-** | **-** | **(137351)** | **-** | **-** | **-** | **-** | **-** | **-** | **-** | **-** | **(137351)** | **432020** | **294669** |
| &nbsp;&nbsp;&nbsp;Sale / Incorporation / Acquisition |  | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| &nbsp;&nbsp;&nbsp;Others |  | - | - | (137351) | - | - | - | - | - | - | - | - | (137351) | 432020 | 294669 |
| Destinations: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp; Dividend equalization reserve |  | - | - | 1217994 | - | (1217994) | - | - | - | - | - | - | - | - | - |
| **Balances on March 31, 2026** |  | **65000000** | **472443** | **66459751** | **(492521)** | **-** | **(1400061)** | **(3216027)** | **859370** | **(3531)** | **(275465)** | **(1008046)** | **126395913** | **1875190** | **128271103** |
| **Changes in the Period** |  | **-** | **(157795)** | **1088841** | **227039** | **-** | **(124563)** | **-** | **-** | **8919** | **-** | **179942** | **1222383** | **495576** | **1717959** |
| The accompanying notes from Management are an integral part of the Consolidated Condensed Financial Statements. | The accompanying notes from Management are an integral part of the Consolidated Condensed Financial Statements. | The accompanying notes from Management are an integral part of the Consolidated Condensed Financial Statements. | The accompanying notes from Management are an integral part of the Consolidated Condensed Financial Statements. | The accompanying notes from Management are an integral part of the Consolidated Condensed Financial Statements. | The accompanying notes from Management are an integral part of the Consolidated Condensed Financial Statements. | The accompanying notes from Management are an integral part of the Consolidated Condensed Financial Statements. | The accompanying notes from Management are an integral part of the Consolidated Condensed Financial Statements. | The accompanying notes from Management are an integral part of the Consolidated Condensed Financial Statements. | The accompanying notes from Management are an integral part of the Consolidated Condensed Financial Statements. | The accompanying notes from Management are an integral part of the Consolidated Condensed Financial Statements. | The accompanying notes from Management are an integral part of the Consolidated Condensed Financial Statements. | The accompanying notes from Management are an integral part of the Consolidated Condensed Financial Statements. | The accompanying notes from Management are an integral part of the Consolidated Condensed Financial Statements. | The accompanying notes from Management are an integral part of the Consolidated Condensed Financial Statements. | The accompanying notes from Management are an integral part of the Consolidated Condensed Financial Statements. |

---

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

------

**Consolidated Condensed Statement of Cash Flows** 

---

| | | | |
|:---|:---|:---|:---|
| | **Note** | | |
| | **Note** | **01/01 to**<br>**03/31/2026** | 01/01 to<br>03/31/2025 |
| **1. Cash Flows from Operating Activities** |  |  |  |
| **Net Income for the Period** |  | **3281550** | **3151583** |
| **Adjustments to Profit** |  | **1970929** | **7315425** |
| &nbsp;&nbsp;Depreciation of Tangible Assets | 6.a | 240936 | 330886 |
| &nbsp;&nbsp;Amortization of Intangible Assets |  | 422345 | 372449 |
| &nbsp;&nbsp;Impairment Losses on Other Assets (Net) |  | 35550 | 91127 |
| &nbsp;&nbsp;Provisions (Net) |  | 1267678 | 1294397 |
| &nbsp;&nbsp;Losses on Financial Assets (Net) |  | 7308745 | 7264611 |
| &nbsp;&nbsp;Net Gains (losses) on Disposal of Tangible Assets, Investments and Non-Current Assets Held for Sale | &nbsp;&nbsp;Net Gains (losses) on Disposal of Tangible Assets, Investments and Non-Current Assets Held for Sale | (33503) | (47389) |
| &nbsp;&nbsp;Income from Companies Accounted by the Equity Method | 5.b | (124743) | (86615) |
| &nbsp;&nbsp;Deferred Taxes |  | (633301) | (1134472) |
| &nbsp;&nbsp;Monetary Adjustment of Escrow Deposits |  | (203547) | (158356) |
| &nbsp;&nbsp;Recoverable Taxes |  | (237195) | (123000) |
| &nbsp;&nbsp;Effects of Changes in Foreign Exchange Rates on Cash and Cash Equivalents |  | 778 | (2396) |
| &nbsp;&nbsp;Effects of Changes in Foreign Exchange Rates on Assets and Liabilities |  | (6072814) | (488233) |
| &nbsp;&nbsp;Other |  | - | 2416 |
| **Net (Increase) Decrease in Operating Assets** |  | **(6051202)** | **19936173** |
| &nbsp;&nbsp;Financial Assets Measured At Fair Value Through Profit Or Loss |  | (13574442) | (15312787) |
| &nbsp;&nbsp;Financial Assets Measured at Fair Value through Other Comprehensive Income |  | 10666741 | 121148 |
| &nbsp;&nbsp;Financial Assets Measured At Amortized Cost |  | 16378324 | 43546217 |
| &nbsp;&nbsp;Other Assets |  | (19521826) | (8418405) |
| **Net Increase (Decrease) in Operating Liabilities** |  | **42317931** | **4691202** |
| &nbsp;&nbsp;Financial Liabilities Measured At Fair Value Through Profit Or Loss Held For Trading |  | 1736900 | (3145875) |
| &nbsp;&nbsp;Financial Liabilities at Amortized Cost |  | 33279083 | 6584939 |
| &nbsp;&nbsp;Other Liabilities |  | 7301948 | 1252138 |
| **Tax Paid** | **12** | **(1916630)** | **(2437265)** |
| **Total Net Cash Flows from Operating Activities (1)** |  | **39602577** | **32657118** |
| **2. Cash Flows from Investing Activities** |  |  |  |
| **Investments** |  | **(714468)** | **(727003)** |
| &nbsp;&nbsp;Increase in Subsidiaries |  | - | - |
| &nbsp;&nbsp;Tangible Assets |  | (288727) | (106746) |
| &nbsp;&nbsp;Intangible Assets |  | (377228) | (393194) |
| &nbsp;&nbsp;Non-Current Assets Held for Sale |  | (48513) | (227063) |
| **Disposal** |  | **86328** | **359416** |
| &nbsp;&nbsp;Decrease in Subsidiaries |  | - | 18815 |
| &nbsp;&nbsp;Tangible Assets |  | 57214 | 124663 |
| &nbsp;&nbsp;Intangible Assets |  | 43934 | 83004 |
| &nbsp;&nbsp;Non-Current Assets Held For Sale |  | (14820) | 132934 |
| Dividends and Interest on Capital Received |  | 122003 | 316041 |
| **Total Net Cash Flows from Investing Activities (2)** |  | **(506137)** | **(51546)** |
| **3. Cash Flows from Financing Activities** |  |  |  |
| &nbsp;&nbsp;Acquisition (Disposal) of Own Shares | 11.d | 227039 | 160484 |
| &nbsp;&nbsp;Issuance of Equity-Eligible Debt Instruments |  | 750600 | 750600 |
| &nbsp;&nbsp;Issuance of Other Long-term Liabilities |  | 54216808 | 29094550 |
| &nbsp;&nbsp;Dividends and Interest on Capital Paid |  | (2172762) | (1457244) |
| &nbsp;&nbsp;Payments of Other Long-term Liabilities |  | (51694471) | (26482377) |
| &nbsp;&nbsp;Interest Payments of Equity-Eligible Debt Instruments |  | (593449) | (478393) |
| &nbsp;&nbsp;Net Increase/Decrease in Non-Controlling Interests |  | - | 682847 |
| **Total Net Cash Flows from Financing Activities (3)** |  | **733765** | **2270467** |
| **Exchange variation on Cash and Cash Equivalents (4)** |  | **(778)** | **2396** |
| **Net Increase in Cash and Cash Equivalents (1+2+3+4)** |  | **39829427** | **34878435** |
| &nbsp;&nbsp;**Cash and Cash Equivalents at the Beginning of the Period** |  | **73272606** | **67200905** |
| &nbsp;&nbsp;**Cash and Cash Equivalents at the End of the Period** |  | **113102033** | **102079340** |

---

The accompanying notes from Management are an integral part of the Consolidated Condensed Financial Statements. &nbsp;&nbsp;&nbsp;&nbsp;

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&nbsp;&nbsp;&nbsp;&nbsp;**1.Operating context, presentation of consolidated condensed financial statements and other information**

&nbsp;&nbsp;&nbsp;&nbsp;**a)Operational Context**

Banco Santander (Brasil) S.A. (Banco Santander or Bank), controlled directly and indirectly by Banco Santander, S.A., with headquarters in Spain (Banco Santander Spain), is the leading institution of the Financial and Prudential Conglomerates before the Central Bank of Brazil (Bacen), constituted as a joint-stock company, with headquarters at Avenida Presidente Juscelino Kubitschek, 2041 e 2235 - Bloco A - Vila Olímpia - São Paulo - SP. Banco Santander operates as a multiple bank and carries out its operations through commercial, investment, credit, financing and investment, real estate credit, leasing and foreign exchange portfolios. Through controlled companies, it also operates in the payment institution, consortium management, securities brokerage, insurance brokerage, consumer financing, digital platforms, benefits management, management and recovery of non-performing credit, capitalization and private pension markets, and provision and administration of food, meal and other vouchers. Operations are conducted in the context of a group of institutions that operate integrated in the financial market. The benefits and costs corresponding to the services provided are absorbed between them and are realized in the normal course of business and under commutative conditions.

The Board of Directors has authorized the issuance of the consolidated condensed interim financial statements for the period ended March 31, 2026, at the meeting held on April 29, 2026.

The aforementioned Financial Statements were subject to a recommendation for approval issued by Banco Santander's Audit Committee.

&nbsp;&nbsp;&nbsp;&nbsp;**b)Presentation of Consolidated Condensed Interim Financial Statements (prepared in accordance with IAS 34)**

The Consolidated Financial Statements were prepared in accordance with the International Financial Reporting Standards (IFRS®) issued by the International Accounting Standards Board (IASB®) (currently referred to by the IFRS® Foundation as "IFRS® accounting standards") and the interpretations issued by the IFRS® Interpretations Committee (current name of the International Financial Reporting Interpretations Committee – IFRIC®). All relevant information specifically related to the Financial Statements of Banco Santander, and only in relation to these, is being disclosed and corresponds to the information used by Banco Santander in its management. There is no change in applicable practices and policies between the consolidated Condensed Financial Statements and the complete financial statements which are published on the RI website, with the database as of 12/31/2025.

&nbsp;&nbsp;&nbsp;&nbsp;**c)Other Information**

**c.1)Adoption of new standards and interpretations**

&nbsp;&nbsp;&nbsp;&nbsp;**· Amendment to IAS 21 – Effects of Changes in Exchange Rates and Translation of Financial Statements:** If a currency is not convertible, it may be difficult to determine an appropriate exchange rate. Although uncommon, a lack of convertibility may arise when a government imposes exchange controls that prohibit the exchange of a currency or limit the volume of transactions in a foreign currency. The amendment to IAS 21 clarifies how entities should assess whether a currency is easily convertible and how they should determine a spot exchange rate for a currency that is difficult to convert, as well as requiring disclosure of information that allows users of financial statements to understand the impacts of a currency that is not convertible. These amendments are effective from January 1, 2025. Santander did not identify any material impacts.

**c.2)New standards and interpretations in force in future years**

&nbsp;&nbsp;&nbsp;&nbsp;**· Amendments to IFRS 9 and IFRS 7 - Amendments to the Classification and Measurement of Financial Instruments:** The requirements for applying IFRS 9 are amended to include contracts to purchase and receive electricity, in addition to allowing the use of these contracts in hedge accounting. It also includes disclosure requirements on these contracts in IFRS 7. In addition, it clarifies that a financial liability is derecognized on the "settlement date" and introduces an accounting policy election to derecognize financial liabilities settled using an electronic payment system before the settlement date. Other clarifications include the classification of financial assets with ESG-linked characteristics through additional guidance on the assessment of contingent characteristics. Additional disclosures are introduced for financial instruments with contingent characteristics and equity instruments classified at fair value through other comprehensive income. The amendments are effective for reporting periods beginning on or after January 1, 2026. These amendments did not impact our disclosures.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**· Annual Improvements to IFRS Accounting Standards - Volume 11:** They include clarifications, simplifications, corrections and amendments designed to improve the consistency of several IFRS Accounting Standards. The amended standards are: IFRS 1 - First-time adoption of International Financial Reporting Standards; IFRS 7 - Financial Instruments: Disclosures and accompanying guidance on the implementation of IFRS 7; IFRS 9 - Financial Instruments; IFRS 10 - Consolidated Financial Statements; and IAS 7 - Statement of Cash Flows. The amendments are effective for annual periods beginning on or after January 1, 2026, with earlier application permitted.

------

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**· IFRS 18 – Presentation and Disclosure in Financial Statements:** Replaces IAS 1 – Presentation of Financial Statements. IFRS 18 introduces new subtotals and three categories for income and expenses (operating, investing and financing) in the income statement structure. It also requires companies to disclose explanations of management-defined performance measures related to the income statement.

These changes are effective for fiscal years beginning January 1, 2027. Santander is evaluating the impacts of this change.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**· IFRS 19 – Non-publicly-accountable subsidiaries:** Disclosures:that allows a subsidiary to provide reduced disclosures when applying IFRS Accounting Standards in its financial statements. IFRS 19 is optional for eligible subsidiaries and establishes the disclosure requirements for subsidiaries that choose to apply it. The new standard is effective for reporting periods beginning on or after January 1, 2027, with earlier application permitted. Santander is evaluating the impacts of this change

**c.3)Estimates used**

The consolidated results and the calculation of consolidated equity are impacted by accounting policies, assumptions, estimates and measurement methods used by the Bank's management in preparing the financial statements. The Bank makes estimates and assumptions that affect the reported amounts of assets and liabilities for future periods. All estimates and assumptions required, in accordance with IFRSs, are management's best estimate in accordance with the applicable standard.

In the consolidated financial statements, estimates are made by the Management of the Bank and the consolidated entities in order to quantify certain assets, liabilities, income and expenses and disclosures in the explanatory notes.

**c.3.1)Critical estimates**

The critical estimates and assumptions that have the most significant impact on the accounting balances of certain assets, liabilities, revenues and expenses and on the disclosures in the explanatory notes are described below:

**i. Assessment of the fair value of certain financial instruments**

Financial instruments are initially recognized at fair value and those that are not measured at fair value in profit or loss are adjusted for transaction costs.

Financial assets and liabilities are subsequently measured, at the end of each period, using valuation techniques. This calculation is based on assumptions, which take into account Management's judgment based on information and market conditions existing at the balance sheet date.

Banco Santander classifies fair value measurements using the fair value hierarchy that reflects the model used in the measurement process, segregating financial instruments into Levels I, II or III.

**Note 18.c** of the Consolidated Condensed Financial Statements as of March 31, 2026, presents the accounting practice and sensitivity analysis for the Financial Instruments, respectively.

**ii. Provisions for losses on credits due to impairment**

The carrying value of non-recoverable financial assets is adjusted by recording a provision for loss under "Losses on financial assets (net) – Financial Assets measured at amortized cost" in the consolidated income statement. The reversal of previously recorded losses is recognized in the consolidated income statement in the period in which the impairment decreases and can be objectively related to a recovery event.

To individually measure the loss due to impairment of loans assessed for impairment, the Bank considers the conditions of the counterparty, such as its economic and financial situation, level of indebtedness, income generating capacity, cash flow, administration, corporate governance and quality of internal controls, payment history, experience in the sector, contingencies and credit limits, as well as characteristics of assets, such as their nature and purpose, type, sufficiency and guarantees of liquidity level and total credit value , and also based on historical experience of impairment and other circumstances known at the time of the assessment.

To measure the loss due to impairment of loans assessed collectively for impairment, the Bank separates financial assets into groups taking into account the characteristics and similarities of credit risk, that is, according to the segment, type of assets, guarantees and other factors associated with historical experience of impairment and other circumstances known at the time of the assessment.

**iii. Provisions for pension funds**

Defined benefit plans are recorded based on an actuarial study, carried out annually by a specialized company, at the end of each year, effective for the subsequent period and are recognized in the consolidated income statement in the lines Interest and similar expenses and Provisions (liquids).

------

The present value of a defined benefit obligation is the present value, without deducting any plan assets, of the expected future payments necessary to settle the obligation resulting from the employee's service in the current and past periods.

**iv. Obligations, contingent assets and liabilities**

Provisions for judicial and administrative proceedings are set up when the risk of loss of the judicial or administrative action is assessed as probable and the amounts involved can be measured with sufficient certainty, based on the nature, complexity and history of the actions and the opinion of legal advisors. internal and external.

**v. Goodwill**

The recorded goodwill is subject to the recoverability test, at least once a year or in a shorter period, in the case of any indication of a reduction in the recoverable value of the asset.

The basis used for the recoverability test is the value in use and, for this purpose, the cash flow is estimated for a minimum period of 5 years. The cash flow was prepared considering several factors, such as: (i) macroeconomic projections of interest rates, inflation, exchange rates and others; (ii) behavior and growth estimates of the national financial system; (iii) increase in costs, returns, synergies and investment plan; (iv) client behavior; and (v) growth rate and adjustments applied to flows in perpetuity. The adoption of these estimates involves the probability of future events occurring and changing any of these factors could have a different result. The cash flow estimate is based on an assessment prepared by an independent specialized company, annually or whenever there is evidence of a reduction in its recovery value, which is reviewed and approved by Management.

**vi. Expectation of realization of IR and CS tax credits**

Deferred tax assets and liabilities include temporary differences, identified as the amounts expected to be recovered or paid on differences between the carrying amounts of assets and liabilities and their respective calculation bases, and accumulated tax loss credits and the negative basis of CSLL. These amounts are measured at the rates expected to apply in the period in which the asset is realized or the liability is settled. Deferred tax assets are only recognized for temporary differences to the extent that it is considered probable that the consolidated entities will have sufficient future taxable profits against which the deferred tax assets can be used.

Other deferred tax assets (accumulated tax loss credits) are only recognized if it is considered probable that the consolidated entities will have sufficient future taxable profits to allow them to be used. The recognized deferred tax assets and liabilities are reviewed at each balance sheet date, with the appropriate adjustments being made based on the findings of the analyses performed. The expectation of realization of the Bank's deferred tax assets is based on projections of future results and a technical study.

**c.4) Change of business Strategy**

In the first quarter of 2025, Banco Santander changed the way it manages part of its portfolio of pre-and post-fixed government securities, financial instruments that are part of its portfolio called ALCO (assets and liability management). The new strategy is based on a long-term investment profile, aiming to ensure greater financial stability, avoiding volatility in the Bank's equity (including for prudential purposes). In accordance with this strategy, Banco Santander has the intention and capacity to hold these securities until their respective maturities.

Management adopted the Amortized Cost (AC) accounting classification for part of the ALCO portfolio, which better reflects the objective of the business model strategy, see note 3.a.

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&nbsp;&nbsp;&nbsp;&nbsp;**2.Basis for consolidation**

Below are highlighted the direct and indirect subsidiaries and investment funds included in the Consolidated Condensed Financial Statements of Banco Santander. Similar information on the companies accounted for by the equity method by the Bank is provided in **Note 5.**

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Investments** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Activity** | **Quantity of Shares or Quotas Owned (in Thousands)** | **Quantity of Shares or Quotas Owned (in Thousands)** | **Direct Participation** | **03/31/2026** |
| **Investments** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Activity** | **Common Shares and Quotas** | **Preferred Shares** | **Direct Participation** | **Consolidated Participation** |
| **Controlled by Banco Santander** | | | | | |
| &nbsp;&nbsp;Santander Sociedade de Crédito, Financiamento e Investimento S.A. (new name for Aymoré Crédito, Financiamento e Investimento S.A.) | &nbsp;&nbsp;Financial | 50159 | - | 100.00% | 100.00% |
| &nbsp;&nbsp;&nbsp;Esfera Fidelidade S.A. | &nbsp;&nbsp;Services | 10001 | - | 100.00% | 100.00% |
| &nbsp;&nbsp;&nbsp;Return Capital Gestão de Ativos e Participações S.A. | &nbsp;&nbsp;Collection Management and Credit Recovery | 486010 | - | 100.00% | 100.00% |
| &nbsp;&nbsp;&nbsp;Em Dia Serviços Especializados em Cobrança Ltda. | &nbsp;&nbsp;Collection and Recover of Credit Management | 257306 | - | 100.00% | 100.00% |
| &nbsp;&nbsp;&nbsp;Rojo Entretenimento S.A. | &nbsp;&nbsp;Services | 7417 | - | 94.60% | 94.60% |
| &nbsp;&nbsp;&nbsp;Sanb Promotora de Vendas e Cobrança Ltda. | &nbsp;&nbsp;Digital Media Services | 71181 | - | 100.00% | 100.00% |
| &nbsp;&nbsp;&nbsp;Sancap Investimentos e Participações S.A. | &nbsp;&nbsp;Holding | 23538159 | - | 100.00% | 100.00% |
| &nbsp;&nbsp;&nbsp;Santander Brasil Administradora de Consórcio Ltda. | &nbsp;&nbsp;Consortium | 372186 | - | 100.00% | 100.00% |
| &nbsp;&nbsp;&nbsp;Santander Corretora de Câmbio e Valores Mobiliários S.A. | &nbsp;&nbsp;Broker | 14067640 | 14067640 | 99.99% | 99.99% |
| &nbsp;&nbsp;&nbsp;Santander Corretora de Seguros, Investimentos e Serviços S.A. | &nbsp;&nbsp;Broker | 7184 | - | 100.00% | 100.00% |
| &nbsp;&nbsp;&nbsp;Santander Holding Imobiliária S.A. | &nbsp;&nbsp;Holding | 558601 | - | 100.00% | 100.00% |
| &nbsp;&nbsp;&nbsp;Santander Leasing S.A. Arrendamento Mercantil | &nbsp;&nbsp;Leasing | 164 | - | 100.00% | 100.00% |
| &nbsp;&nbsp;&nbsp;F1RST Tecnologia e Inovação Ltda. | &nbsp;&nbsp;Technology Services | 241941 | - | 100.00% | 100.00% |
| &nbsp;&nbsp;&nbsp;Pulse Client Expert Ltda. (new name for SX Negócios) | &nbsp;&nbsp;Call Center Services | 75050 | - | 100.00% | 100.00% |
| &nbsp;&nbsp;&nbsp;Tools Soluções e Serviços Compartilhados Ltda. | &nbsp;&nbsp;Services | 192000 | - | 100.00% | 100.00% |
| **Controlled by Santander Sociedade de Crédito, Financiamento e Investimento S.A. (New name for Aymoré Crédito, Financiamento e Investimento S.A.)** |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Banco Hyundai Capital Brasil S.A. | &nbsp;&nbsp;Bank | 150000 | - | 50.00% | 50.00% |
| &nbsp;&nbsp;&nbsp;Solution 4Fleet Consultoria Empresarial S.A. | &nbsp;&nbsp;Technology | 500411 | - | 100.00% | 100.00% |
| **Controlled by Santander Leasing S.A. Arrendamento Mercantil** |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Banco Bandepe S.A. | &nbsp;&nbsp;Bank | 3589 | - | 100.00% | 100.00% |
| &nbsp;&nbsp;&nbsp;Santander Distribuidora de Títulos e Valores Mobiliários S.A. | &nbsp;&nbsp;Distributor | 461 | - | 100.00% | 100.00% |
| **Controlled by Sancap Investimentos e Participações S.A.** |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Santander Capitalização S.A. | &nbsp;&nbsp;Capitalization | 64615 | - | 100.00% | 100.00% |
| &nbsp;&nbsp;&nbsp;Evidence Previdência S.A. | &nbsp;&nbsp;Private Pension | 42819564 | - | 100.00% | 100.00% |
| **Controlled by Santander Corretora de Seguros, Investimentos e Serviços S.A.** |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Vora Gestão e Consultoria de Energia e Gás S.A. | &nbsp;&nbsp;Energy | 653 |  | 70.00% | 70.00% |
| &nbsp;&nbsp;&nbsp;Fit Economia de Energia S.A. | &nbsp;&nbsp;Energy | 10400 | - | 65.00% | 65.00% |
| **Controlled by Santander Distribuidora de Títulos e Valores Mobiliários S.A.** |  |  |  |  |  |
| &nbsp;&nbsp;Santander Corretora de Títulos e Valores Mobiliários S.A | &nbsp;&nbsp;Broker | 21559 | - | 50.09% | 50.09% |
| **Controlled by Toro Corretora de Títulos de Valores Mobiliários Ltda.** |  |  |  |  |  |
| &nbsp;&nbsp;Santander Investimentos Sociedade Prestadora de Serviços de Ativos Virtuais S.A. | &nbsp;&nbsp;Investments | 289362 | - | 86.77% | 86.77% |
| **Jointly Controlled Companies by Sancap Investimentos e Participações S.A.** |  |  |  |  |  |
| &nbsp;&nbsp;Santander Auto S.A. | &nbsp;&nbsp;Insurance company | 22452 | - | 50.00% | 50.00% |

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**Consolidated Investment Funds**

• Santander Fundo de Investimento Amazonas Multimercado Crédito Privado de Investimento no Exterior (Santander FI Amazonas);

• Santander Fundo de Investimento Diamantina Multimercado Crédito Privado de Investimento no Exterior (Santander FI Diamantina);

• Santander Fundo de Investimento Guarujá Multimercado Crédito Privado de Investimento no Exterior (Santander FI Guarujá);

• Santander Fundo de Investimento SBAC Referenciado DI Crédito Privado (Santander FI SBAC);

• Santander SBAC II Renda Fixa Curto Prazo;

• Santander Paraty QIF PLC (Santander Paraty) (3); &nbsp;&nbsp;&nbsp;&nbsp;

• Venda de Veículos Fundo de Investimento em Direitos Creditórios (Venda de Veículos FIDC) (1);&nbsp;&nbsp;&nbsp;&nbsp;

• Prime 16 – Fundo de Investimento Imobiliário (current name of BRL V - Fundo de Investimento Imobiliário - FII) (2);

• Santander FI Hedge Strategies Fund (Santander FI Hedge Strategies) (3); &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

• Fundo de Investimento em Direitos Creditórios Multisegmentos NPL Ipanema VI - Não Padronizado (Fundo Investimento Ipanema NPL VI) (4);

• Santander Hermes Multimercado Crédito Privado Infraestrutura Fundo de Investimentos;

• Fundo de Investimentos em Direitos Creditórios Atacado – Não Padronizado (4);

• Atual - Fundo de Investimento Multimercado Crédito Privado Investimento no Exterior;

• Getnet Fundo de Investimentos em Direitos Creditórios;

• Agro Flex Fundo de Investimento Direitos Creditórios (4);

• San Créditos Estruturados – Fundo de Investimento em Direitos Creditórios Não Padronizado (4);

• D365 – Fundo De Investimento em Direitos Creditórios (4);

• Fundo de Investimento em Direitos Creditórios Tellus (4);

• Fundo de Investimento em Direitos Creditórios Precato IV (4);

• Santander Hera Renda Fixa Fundo Incentivado de Investimento em Infraestrutura Responsabilidade Limitada;

• San Preca Federal I Fundo De Investimento Em Direitos Creditórios - Responsabilidade Limitada;

• Fundo De Investimento Em Direitos Creditórios Conretorno - Responsabilidade Limitada;

• Ararinha Fundo de Investimento em Renda Fixa Longo Prazo;

• Hyundai Fundo de Investimento em Direitos Creditórios;

• Terras Fundo de Investimento nas Cadelas Produtivas do Agronegocio - Fiagro - Resp Limitada;

• Santander Módulo MX III Renda Fixa Referenciado DI CIC FIF RESP Limitada;

• Santander Módulo SINQIA Renda Fixa Referenciado DI - CIC FIF RESP Limitada;

• Santander Módulo SINQIA II Renda Fixa Referenciado DI - CIC FIF RESP Limitada;

• Santander Módulo SINQIA III Renda Fixa Referenciado DI - CCI FIF; and

• Atena Fundo De Investimento Em Direitos Creditrios Segmento Infraestrutura De Responsabilidade Limitada.

(1) Renault montadora (an entity not belonging to the Santander Conglomerate) sells its invoices to the Fund. This Fund exclusively purchases invoices from Renault montadora. In turn, Banco RCI Brasil S.A. holds 100% of its shares.

(2)&nbsp;&nbsp;&nbsp;&nbsp;Banco Santander was listed as the creditor for certain overdue loans secured by real estate. The operation to recover these loans consists of contributing the real estate as collateral to the capital of the Real Estate Investment Fund and subsequently transferring the Fund's shares to Banco Santander, through payment in kind of the aforementioned loans.

(3)&nbsp;&nbsp;&nbsp;&nbsp; Fund controlled by Return Capital Gestão de Ativos e Participações S.A.

Corporate movements were implemented with the aim of reorganizing the operations and activities of the entities in accordance with the Santander Conglomerate's business plan.

In addition, the entity Vert-11 Companhia Securitizadora de Créditos Financeiros was consolidated, as Banco Santander has full control over its assets.

&nbsp;&nbsp;&nbsp;&nbsp;**a)Sale of its entire equity interest in Galgo Sistemas de Informações S.A.**

On March 20, 2025, Banco Santander (Brasil) S.A. and other shareholders signed certain documents establishing the terms and conditions for the purchase and sale of shares representing the entire total and voting share capital of Galgo Sistemas de Informações S.A. to RTM – Rede de Telecomunicações para o Mercado Ltda. ("Transaction"). On May 7, 2025, with the completion of the Transaction, Banco Santander (Brasil) S.A. ceased to hold any shareholding in Galgo Sistemas de Informações S.A.

&nbsp;&nbsp;&nbsp;&nbsp;**b)Sale of the entire equity interest held in Summer Empreendimentos Ltda.**

&nbsp;&nbsp;&nbsp;&nbsp;

On February 24, 2025, Santander Holding Imobiliária S.A. ("SHI") and Banco Santander (Brasil) S.A. signed certain documents establishing the terms and conditions for the purchase and sale of shares representing the entire share capital of Summer Empreendimentos Ltda. with RFM-E Ltda. ("Transaction"). On September 29, 2025, with the completion of the Transaction, Banco Santander (Brasil) S.A. and SHI ceased to hold any equity interest in Summer Empreendimentos Ltda.

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&nbsp;&nbsp;&nbsp;&nbsp;**3.Financial assets**

&nbsp;&nbsp;&nbsp;&nbsp;**a)Classification by nature and category**

The classification by nature and category for the purposes of evaluating the Bank's assets, except balances related to "Cash and cash equivalents" and "Derivatives used as Hedge", on March 31, 2026 and December 31, 2025 is shown below:&nbsp;&nbsp;&nbsp;&nbsp;

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| | | | | |
|:---|:---|:---|:---|:---|
| | | | | **03/31/2026** |
| | **Financial Assets Measured At Fair Value Through Profit Or Loss** | **Financial Assets Measured At Fair Value Through Other Comprehensive Income** | **Financial Assets Measured At Amortized Cost** | **Total** |
| &nbsp;&nbsp;**Balances with the Brazilian Central Bank** | **121538753** | **—** | **92829562** | **214368315** |
| &nbsp;&nbsp;**Loans and other amounts with credit institutions, net** | **—** | **—** | **43445545** | **43445545** |
| &nbsp;&nbsp;&nbsp; Of which: |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Loans and other amounts with credit institutions, gross |  |  | 43446353 | 43446353 |
| &nbsp;&nbsp;&nbsp;&nbsp;Impairment losses (note 3-b.2) |  |  | (808) | (808) |
| &nbsp;&nbsp;**Loans and advances to customers, net** | **5813076** | **—** | **551050161** | **556863237** |
| &nbsp;&nbsp;&nbsp; Of which: |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Loans and advances to customers, gross (1) | 5813076 |  | 589188811 | 595001887 |
| &nbsp;&nbsp;&nbsp;&nbsp;Impairment losses (note 3-b.2) |  |  | (38138650) | (38138650) |
| &nbsp;&nbsp;**Debt instruments, net** | **85759454** | **58625705** | **125511043** | **269896202** |
| &nbsp;&nbsp;&nbsp; Of which: |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Debt instruments, gross (2) | 85759454 | 58625705 | 129088744 | 273473903 |
| &nbsp;&nbsp;&nbsp;&nbsp;Impairment losses (note 3-b.2) |  |  | (3577701) | (3577701) |
| &nbsp;&nbsp;**Equity instruments** | **5384000** | **2141** | **—** | **5386141** |
| &nbsp;&nbsp;**Trading derivatives** | **57706835** | **—** | **—** | **57706835** |
| &nbsp;&nbsp;**Total** | **276202118** | **58627846** | **812836311** | **1147666275** |
|  |  |  |  | 12/31/2025 |
|  | **Financial Assets Measured At Fair Value Through Profit Or Loss** | **Financial Assets Measured At Fair Value Through Other Comprehensive Income** | **Financial Assets Measured At Amortized Cost** | **Total** |
| &nbsp;&nbsp;**Balances With The Brazilian Central Bank** | **89994937** | **—** | **91754315** | **181749252** |
| &nbsp;&nbsp;**Loans and other amounts with credit institutions, net** | **—** | **—** | **35947923** | **35947923** |
| Of which: |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Loans and other amounts with credit institutions, gross |  |  | 35949344 | 35949344 |
| &nbsp;&nbsp;&nbsp;&nbsp;Impairment losses (Note 3-b.2) |  |  | (1421) | (1421) |
| &nbsp;&nbsp;**Loans and advances to customers, net** | **6413587** | **—** | **558134969** | **564548556** |
| Of which: |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Loans and advances to customers, gross (1) | 6413587 |  | 591732899 | 598146486 |
| &nbsp;&nbsp;&nbsp;&nbsp;Impairment losses (Note 3-b.2) |  |  | (33597930) | (33597930) |
| &nbsp;&nbsp;**Debt instruments, net** | **95546026** | **69354220** | **114708615** | **279608861** |
| Of which: |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Debt instruments, gross | 95546026 | 69354220 | 116778171 | 281678417 |
| &nbsp;&nbsp;&nbsp;&nbsp;Impairment losses (Note 3-b.2) |  |  | (2069556) | (2069556) |
| &nbsp;&nbsp;**Equity instruments** | **4862393** | **92363** | **—** | **4954756** |
| &nbsp;&nbsp;**Trading derivatives** | **65590206** | **—** | **—** | **65590206** |
| &nbsp;&nbsp;**Total** | **262407149** | **69446583** | **800545822** | **1132399554** |

---

(1) On March 31, 2026, the balance recorded in "Loans and advances to customers" referring to operations of the assigned credit portfolio is R$16,000 (12/31/2025 – R$16,768).

(2) In the 2nd quarter of 2025, a portion of securities in the ALCO portfolio, in the amount equivalent to R$23,190 million, was classified in the category of Financial Assets measured at amortized cost (note 1.c.4), generating a reversal of mark-to-market adjustments on the reclassified securities, positively impacting shareholders' equity by R$514 million, net of tax effects (R$934 million gross) at the time.

------

&nbsp;&nbsp;&nbsp;&nbsp;**b)Valuation adjustments arising from loss of recoverable value of financial assets**

**b.1)Financial assets measured at fair value through Other Comprehensive Income**

As indicated in explanatory note 2 to the Bank's consolidated Interim Financial Statements for the period ended March 31, 2026, variations in the carrying value of financial assets and liabilities are recognized in the consolidated income statement and except in the case of financial assets measured at fair value through other comprehensive income, where changes in fair value are temporarily recognized in consolidated Net Equity, in "Other comprehensive income".

Debits or credits in "Other Comprehensive Income" arising from changes in fair value remain in the Bank's consolidated Net Equity until the respective assets are written off, when they are then recognized in the consolidated income statement. As part of the fair value measurement process, when there is evidence of losses in the recoverable value of these instruments, the amounts are no longer recognized in Net Equity under the heading "Financial Assets Measured at Fair Value through Other Comprehensive Income" and are reclassified to the Consolidated Income Statement at the cumulative value on that date.

On March 31, 2026, the Bank analyzed the variations in the fair value of the various assets that make up this portfolio and concluded that, on that date, there were no significant differences whose origin could be considered as resulting from impairment losses. Consequently, all changes in the fair value of these assets are presented in "Other Comprehensive Income". Changes in the balance of other comprehensive income in the interim period are recognized in the consolidated statement of Other Comprehensive Income.<br>

**b.2)Financial Assets Measured at Amortized Cost - Loans, other amounts with credit institutions, advances to customers and debt instrument**

Changes in provisions for recoverable value losses of assets included in "Financial Assets Measured at Amortized Cost - Loans, Other Amounts with Credit Institutions, Advances to Customers and Debt Instrument" (1) in the periods ended March 31, 2026 and 2025 were the following:

---

| | | |
|:---|:---|:---|
| | **01/01 to** | 01/01 to |
| | **03/31/2026** | 03/31/2025 |
| **Balance at beginning of the period**  | **40694182** | **35668907** |
| Constitution (Reversal) for losses on financial assets | 6578254 | 6871461 |
| Write-off of impaired balances against recorded impairment allowance | (5538344) | (6830260) |
| Exchange Variation | (16933) | (27622) |
| **Balance at end of the period (Note 3.a)** | **41717159** | **35682486** |
| Provision for contingent liabilities | 767886 | 465097 |
| **Total balance of allowance for impairment losses, including provisions for contingent liabilities** | **42485045** | **36147583** |
| **Loans written-off recovery** | **248237** | **236236** |
| **Discount granted** | **(978728)** | **(629386)** |

---

(1) Includes Provision for Losses on Financial Guarantee Contracts Provided.

Considering the amounts recognized in "Constitution (Reversal) for losses on financial assets", "Recoveries of loans written off as losses" and "Discount Granted" total R$7,308,745 and R$7,264,611 in the periods ended March 31, 2026 and 2025 , respectively.<br>Considering the plan to update the impairment provision calculation models, to be implemented during the second half of 2025, the recognized balance of supplementary provision (post model adjustment) is R$1,697 million (R$933 million, net of taxes) as of March 31, 2026, to meet the update of macroeconomic parameters and other relevant parameters of the Bank's impairment provision calculation models, in accordance with IFRS 9, which resulted in higher provisions, reflecting a more complex economic environment expected.

&nbsp;&nbsp;&nbsp;&nbsp;**c)Non-recoverable assets**

A financial asset is considered unrecoverable when there is objective evidence of the occurrence of events that: (i) cause an adverse impact on the estimated future cash flows at the date of the transaction, in the case of debt instruments (loans and debt securities); (ii) mean that its carrying amount cannot be fully recovered, in the case of equity instruments; (iii) arise from the breach of clauses or terms of loans, and (iv) at the time of bankruptcy proceedings.

Details of changes in the balance of financial assets classified as "Loans, advances to customers and Debt Instruments" considered as non-recoverable due to credit risk in the periods ended March 31, 2026 and 2025 are as follows:

------

---

| | | |
|:---|:---|:---|
| | **01/01 to** | 01/01 to |
| | **03/31/2026** | 03/31/2025 |
| **Balance at beginning of the period**  | **48899708** | **42242354** |
| Net additions | 8582333 | 8103808 |
| Write-off of impaired balances against recorded impairment allowance | (5634912) | (7498391) |
| **Balance at end of the period** | **51847129** | **42847771** |

---

&nbsp;&nbsp;&nbsp;&nbsp;**d)Provisions for Losses of Financial Guarantee Contracts Provided**

IFRS 9 requires that the provision for expected credit losses be recorded for financial guarantee contracts provided, that have not yet been honored. It should be measured and accounted for at the provision expense that reflects the credit risk in the event of honored guarantees and the endorsed customer does not comply with its contractual obligations. Below is the movement of these provisions for the periods ended March 31, 2026 and 2025.

---

| | | |
|:---|:---|:---|
| | **01/01 to** | 01/01 to |
| | **03/31/2026** | 03/31/2025 |
| **Balances at the beginning of the period**  | **787837** | **440113** |
| Constitution (Reversal) of provision for losses on financial guarantee contracts provided | (19951) | 22094 |
| **Balances at the end of period**  | **767886** | **462207** |

---

&nbsp;&nbsp;&nbsp;&nbsp;**4.Non-current assets held for sale**

Non-current assets held for sale include assets not in use.

&nbsp;&nbsp;&nbsp;&nbsp;**5.Interests in associates and joint ventures**

<u>Joint Control</u>

Banco Santander and its subsidiaries consider investments classified as joint control when they have a shareholders' agreement which defines that strategic, financial and operational decisions require the unanimous consent of all investors.

<u>Significant Influence</u>

Affiliates are entities over which the Bank is able to exercise significant influence (significant influence is the power to participate in the financial and operational policy decisions of the investee) but does not control or have joint control.

&nbsp;&nbsp;&nbsp;&nbsp;**a)Composition**

---

| | | | | |
|:---|:---|:---|:---|:---|
| | | | **Participation %** | **Participation %** |
| | **Activity** | **Country** | **03/31/2026** | 12/31/2025 |
| **Jointly Controlled by Banco Santander** |  |  |  |  |
| Banco RCI Brasil S.A. | Bank | Brazil | 39.89% | 39.89% |
| Estruturadora Brasileira de Projetos S.A. - EBP (1)(2) | Other Activities | Brazil | 11.11% | 11.11% |
| Gestora de Inteligência de Crédito (1) | Credit Bureau | Brazil | 15.56% | 15.56% |
| **Jointly Controlled by Santander Corretora de Seguros** |  |  |  |  |
| Hyundai Corretora de Seguros | Insurance Broker | Brazil | 50.00% | 50.00% |
| **Jointly Controlled by Webmotors S.A.** |  |  |  |  |
| Loop Gestão de Pátios S.A. (Loop) | Provision of Services | Brazil | 51.00% | 51.00% |
| Car10 Tecnologia e Informação S.A. (Car10) | Technology | Brazil | 66.67% | 66.67% |
| **Jointly Controlled Car10 Tecnologia e Informação S.A** |  |  |  |  |
| Pag10 Fomento Mercantil Ltda | Technology | Brazil | 100.00% | 100.00% |
| **Jointly Controlled by Tecnologia Bancária S.A.** |  |  |  |  |
| Tbnet Comércio, Locação e Administração Ltda. (Tbnet) | Other Activities | Brazil | 100.00% | 100.00% |
| TecBan Serviços Integrados Ltda. | Other Activities | Brazil | 100.00% | 100.00% |
| **Jointly Controlled by Tbnet** |  |  |  |  |
| Tbforte Segurança e Transporte de Valores Ltda. (Tbforte) | Other Activities | Brazil | 100.00% | 100.00% |

---

------

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Significant Influence of Banco Santander** | | | | |
| Núclea S.A. | Other Activities | Brasil | 17.53% | 17.53% |
| Pluxee Beneficios Brasil S.A. | Benefits | Brazil | 20.00% | 20.00% |
| Santander Auto S.A | Other Activities | Brazil | 50.00% | 50.00% |
| **Significant Influence of Santander Corretora de Seguros** |  |  |  |  |
| Tecnologia Bancária S.A. - TECBAN | Other Activities | Brazil | 18.98% | 18.98% |
| CSD Central de Serviços de Registro e Depósito aos Mercados Financeiro e de Capitais S.A | Other Activities | Brazil | 17.94% | 18.35% |
| Biomas - Serviços Ambientais, Restauração e Carbono S.A. | Other Activities | Brazil | 16.66% | 16.66% |
| Webmotors S.A. | Other Activities | Brazil | 30.00% | 30.00% |

---

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| | **03/31/2026** | **03/31/2026** | **03/31/2026** | 12/31/2025 | 12/31/2025 | 12/31/2025 |
| | **Assets** | **Liabilities** | **Profit (Loss)** | **Assets** | **Liabilities** | **Profit (Loss)** |
| **Jointly Controlled by Banco Santander** | **14910154** | **14827843** | **82311** | **15623855** | **15303124** | **322033** |
| Banco RCI Brasil S.A. | 13713971 | 13625664 | 88307 | 14406307 | 14060196 | 346111 |
| Estruturadora Brasileira de Projetos S.A. - EBP (1) | 136 | 235 | (99) | 3889 | 3876 | 369 |
| Gestora de Inteligência de Crédito | 1196047 | 1201944 | (5897) | 1213660 | 1239052 | (24447) |
| **Jointly Controlled by Santander Corretora de Seguros** | **3193512** | **3188632** | **4880** | **3169143** | **3184741** | **(45238)** |
| Tecnologia Bancária S.A. - TECBAN (1) | 2864765 | 2855872 | 8893 | 2836231 | 2797987 | 8603 |
| Hyundai Corretora de Seguros | 11030 | 10435 | 595 | 11069 | 8676 | 2393 |
| CSD Central de Serviços de Registro e Depósito aos Mercados Financeiro e de Capitais S.A | 280046 | 279081 | 965 | 279750 | 295046 | (15295) |
| Biomas - Serviços Ambientais, Restauração e Carbono S.A. (1) | 37671 | 43244 | (5573) | 42093 | 83032 | (40939) |
| **Significant Influence of Banco Santander** | **11533813** | **11291806** | **242007** | **11271921** | **9932267** | **1260785** |
| Núclea S.A. | 2209533 | 2103962 | 105571 | 2164151 | 1524528 | 633822 |
| Pluxee BenefÍcios Brasil S.A. | 8660139 | 8556385 | 103754 | 8419988 | 7792935 | 553985 |
| Santander Auto S.A. | 664141 | 631459 | 32682 | 687782 | 614804 | 72978 |
| **Significant Influence of Santander Corretora de Seguros** | **1217914** | **1184396** | **33518** | **846681** | **614883** | **226950** |
| Webmotors S.A. | 1217914 | 1184396 | 33518 | 846681 | 614883 | 226950 |
| **Total** | **30855393** | **30492677** | **362716** | **30911600** | **29035015** | **1764530** |
| (1) Companies with a one-month lag for the calculation of equity method. For accounting purposes, the equity method result is used as of 03/31/2026, based on the position of 02/28/2026. | (1) Companies with a one-month lag for the calculation of equity method. For accounting purposes, the equity method result is used as of 03/31/2026, based on the position of 02/28/2026. | (1) Companies with a one-month lag for the calculation of equity method. For accounting purposes, the equity method result is used as of 03/31/2026, based on the position of 02/28/2026. | (1) Companies with a one-month lag for the calculation of equity method. For accounting purposes, the equity method result is used as of 03/31/2026, based on the position of 02/28/2026. | (1) Companies with a one-month lag for the calculation of equity method. For accounting purposes, the equity method result is used as of 03/31/2026, based on the position of 02/28/2026. | (1) Companies with a one-month lag for the calculation of equity method. For accounting purposes, the equity method result is used as of 03/31/2026, based on the position of 02/28/2026. | (1) Companies with a one-month lag for the calculation of equity method. For accounting purposes, the equity method result is used as of 03/31/2026, based on the position of 02/28/2026. |
| (2) Although the stake is less than 20%, the Bank exercises joint control over the entity with the other majority shareholders, through a shareholders' agreement where no business decision can be taken by a single shareholder, that is, decisions require the unanimous consent of the parties sharing control." | (2) Although the stake is less than 20%, the Bank exercises joint control over the entity with the other majority shareholders, through a shareholders' agreement where no business decision can be taken by a single shareholder, that is, decisions require the unanimous consent of the parties sharing control." | (2) Although the stake is less than 20%, the Bank exercises joint control over the entity with the other majority shareholders, through a shareholders' agreement where no business decision can be taken by a single shareholder, that is, decisions require the unanimous consent of the parties sharing control." | (2) Although the stake is less than 20%, the Bank exercises joint control over the entity with the other majority shareholders, through a shareholders' agreement where no business decision can be taken by a single shareholder, that is, decisions require the unanimous consent of the parties sharing control." | (2) Although the stake is less than 20%, the Bank exercises joint control over the entity with the other majority shareholders, through a shareholders' agreement where no business decision can be taken by a single shareholder, that is, decisions require the unanimous consent of the parties sharing control." | (2) Although the stake is less than 20%, the Bank exercises joint control over the entity with the other majority shareholders, through a shareholders' agreement where no business decision can be taken by a single shareholder, that is, decisions require the unanimous consent of the parties sharing control." | (2) Although the stake is less than 20%, the Bank exercises joint control over the entity with the other majority shareholders, through a shareholders' agreement where no business decision can be taken by a single shareholder, that is, decisions require the unanimous consent of the parties sharing control." |

---

---

| | | | | |
|:---|:---|:---|:---|:---|
| | **Investments** | **Investments** | **Results** | **Results** |
| | | | **01/01 to** | 01/01 to |
| | **03/31/2026** | 12/31/2025 | **03/31/2026** | 03/31/2025 |
| **Jointly Controlled by Banco Santander** | **571775** | **534505** | **33904** | **9519** |
| Banco RCI Brasil S.A. | 524807 | 485793 | 35226 | 9828 |
| Estruturadora Brasileira de Projetos S.A. - EBP | 15 | 428 | 10 | 38 |
| Gestora de Inteligência de Crédito | 46953 | 48284 | (1332) | (347) |
| **Jointly Controlled by Santander Corretora de Seguros** | **3790** | **3492** | **298** | **152** |
| Hyundai Corretora de Seguros | 3790 | 3492 | 298 | 152 |
| **Significant Influence of Banco Santander** | **2398524** | **2370206** | **79077** | **63933** |
| Núclea S.A. | 343437 | 314434 | 28985 | 29587 |
| Pluxee Benefícios Brasil S.A. | 1922534 | 1933758 | 33561 | 27769 |
| Santander Auto S.A. | 72094 | 56745 | 16342 | 6577 |
| FIDC Creditórios Multisegmentos NPL Ipanema X Responsabilidade Limitada | 60459 | 65269 | 189 | - |
| **Significant Influence of Santander Corretora de Seguros** | **635503** | **608891** | **11464** | **13011** |
| Tecnologia Bancária S.A. - TECBAN | 252326 | 250552 | 3498 | (3526) |
| CSD Central de Serviços de Registro e Depósito aos<br>Mercados Financeiro e de Capitais S.A | 88306 | 47321 | (1150) | (2520) |
| Biomas - Serviços Ambientais, Restauração e Carbono S.A. | 2302 | 3946 | (1644) | (1449) |
| Webmotors S.A. | 292569 | 307072 | 10760 | 20506 |
| **Total** | **3609592** | **3517094** | **124743** | **86615** |

---

------

The Bank does not have guarantees provided to companies with shared control and significant influence.

The Bank does not have contingent liabilities with a significant risk of possible loss related to investments in companies with shared control and significant influence.

&nbsp;&nbsp;&nbsp;&nbsp;**b)Variation**

Below are the variations in the balance of this item in the periods ended March 31, 2026 and 2025:

---

| | | | | |
|:---|:---|:---|:---|:---|
| | **01/01 to 03/31/2026** | **01/01 to 03/31/2026** | 01/01 to 03/31/2025 | 01/01 to 03/31/2025 |
| | **Joint Control** | **Significant Influence** | **Joint Control** | **Significant Influence** |
| **Balance at beginning of exercise** | **537997** | **2979097** | **975731** | **2664444** |
| &nbsp;&nbsp;Adjustment to market value | 10481 | (10317) | (13418) | (164) |
| &nbsp;&nbsp;Write-off |  |  |  |  |
| &nbsp;&nbsp;Equity in earnings of subsidiaries | 34201 | 90542 | 9671 | 76944 |
| &nbsp;&nbsp;Dividends proposed / received | (7114) | (25295) |  | (113598) |
| &nbsp;&nbsp;Jointly Controlled Capital Increase |  |  |  | (18813) |
| **Balance at end of period** | **575565** | **3034027** | **971984** | **2608813** |
| **Total Investments** |  | **3609592** |  | **3580797** |

---

&nbsp;&nbsp;&nbsp;&nbsp;**c)Losses due to non-recovery**

No impairment losses were recognized on investments in associates and joint ventures on March 31, 2026 and December 31, 2025.

&nbsp;&nbsp;&nbsp;&nbsp;**d)Other information**

Details of the principal jointly controlled company:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• **Banco RCI Brasil S.A.:** Company constituted as a joint stock company with headquarters in Paraná, its main objective is to carry out investment, leasing, credit, financing and investment operations, aiming to sustain the growth of the Renault and Nissan automotive brands in the Brazilian market, with operations aimed at, mainly, financing and leasing to the end consumer. It is a financial institution that is part of the RCI Banque Group and the Santander Conglomerate, and its operations are conducted within the context of a group of institutions that operate in an integrated manner in the financial market. In accordance with the Shareholders' Agreement, the main decisions that impact this company are taken jointly between Banco Santander and other controlling shareholders.

&nbsp;&nbsp;&nbsp;&nbsp;**6.Fixed assets**

The Bank's tangible assets refer to fixed assets for its own use. The Bank does not have tangible assets held as investment property or leased under operating leases. The Bank is also not a party to any financial lease agreement during the periods ending March 31, 2026 and 2025.

&nbsp;&nbsp;&nbsp;&nbsp;**a)Composition**

Details, by asset category, of tangible assets in the consolidated balance sheets are as follows:

------

---

| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
| | **Land and buildings** | **Furniture and equipment for use and vehicles** | **Lease Fixed Assets** | **<br>Facilities** | **Improvements to third party properties** | **Fixed Assets in Progress** | **Total** |
| **Balance as of December 31, 2025** | **1382593** | **1810417** | **717247** | **328130** | **669000** | **138746** | **5046133** |
| Addition | 5995 | 72798 | 57246 | 4005 | 6798 | 141885 | 288727 |
| Write-off | (334) | (10889) | (25802) | (1805) | (18379) | (5) | (57214) |
| Depreciation of the period | (17140) | (118660) | (52572) | (19140) | (31256) | (2168) | (240936) |
| Transfers | (196) | 59292 | - | 36982 | 18305 | (115936) | (1553) |
| **Balance as of March 31, 2026** | **1370918** | **1812958** | **696119** | **348172** | **644468** | **162522** | **5035157** |
| **Balance as of December 31, 2024** | **1515947** | **2124656** | **1059363** | **371584** | **844995** | **105355** | **6021900** |
| Addition | 6 | 11642 | 1338 | 4780 | 15786 | 73194 | 106746 |
| Write-off | (3439) | (29038) | (62731) | 6585 | (35975) | (65) | (124663) |
| Depreciation of the period | (17407) | (126847) | (122127) | (21022) | (42768) | (715) | (330886) |
| Transfers | - | 47955 | - | 27214 | 23825 | (102072) | (3078) |
| **Balance as of March 31, 2025** | **1495107** | **2028368** | **875843** | **389141** | **805863** | **75697** | **5670019** |
| Depreciation expenses were recorded under the heading "Depreciation and amortization" in the income statement. | Depreciation expenses were recorded under the heading "Depreciation and amortization" in the income statement. | Depreciation expenses were recorded under the heading "Depreciation and amortization" in the income statement. | Depreciation expenses were recorded under the heading "Depreciation and amortization" in the income statement. | Depreciation expenses were recorded under the heading "Depreciation and amortization" in the income statement. | Depreciation expenses were recorded under the heading "Depreciation and amortization" in the income statement. | Depreciation expenses were recorded under the heading "Depreciation and amortization" in the income statement. | Depreciation expenses were recorded under the heading "Depreciation and amortization" in the income statement. |

---

For better presentation, the categories of the different asset classes have been relocated.

&nbsp;&nbsp;&nbsp;&nbsp;**a)Losses due to non-recovery**

In the fiscal year ended March 31, 2026, there was an impact of an impairment expense of R$4,563 (12/31/2025 – R$20,001) and a loss due to obsolescence and discontinuation of fixed assets in the amount of R$31,106 (12/31/2025 - R$268,686).

&nbsp;&nbsp;&nbsp;&nbsp;**b)Commitment to purchase tangible assets**

As of March 31, 2026 and December 31, 2025, the Bank has no contractual commitments for the acquisition of tangible assets.

&nbsp;&nbsp;&nbsp;&nbsp;**7.Intangible assets - Goodwill**

The goodwill constitutes the excess between the acquisition cost and the Bank's share in the net fair value of the acquiree's assets, liabilities and contingent liabilities. When the excess is negative (discount), it is recognized immediately in profit or loss. In accordance with IFRS 3 Business Combinations, goodwill is carried at cost and is not amortized, but tested annually for impairment purposes or whenever there is evidence of impairment of the cash-generating unit to which it was allocated. Goodwill is recorded at its cost value less accumulated impairment losses. Impairment losses recognized on goodwill are not reversed. Gains and losses on the disposal of an entity include the carrying value of the goodwill related to the entity sold.

The recorded goodwill is subject to the recoverability test **(note 1.c.3.1.v)** and was allocated according to the operating segment **(note 15).**

During the period, no indications of impairment of goodwill were identified.

---

| | | |
|:---|:---|:---|
| | **03/31/2026** | 12/31/2025 |
| **Breakdown** |  |  |
| Banco ABN Amro Real S.A. (Banco Real) | 27217566 | 27217566 |
| Em Dia Serviços Especializados em Cobranças Ltda. (Nova denominação da Liderança Serviços Especializados em Cobranças LTDA.) | 184447 | 184447 |
| Toro Corretora de Títulos e Valores Mobiliários Ltda. | 160769 | 160770 |
| Olé Consignado (Atual Denominação Social do Banco Bonsucesso Consignado) | 62800 | 62800 |
| CSD Central de Serviços de Registro e Depósito aos Mercados Financeiro e de Capitais S.A. | - | 42135 |
| Return Capital Serviços de Recuperação de Créditos S.A. (atual denominação social da Ipanema Empreendimentos e Participações S.A.) | 21304 | 21304 |
| Monetus Investimentos S.A. | 39919 | 39919 |
| Mobills Labs Soluções em Tecnologia Ltda. | 35483 | 35483 |
| Solution 4Fleet Consultoria Empresarial S.A. | 32749 | 32590 |
| Santander Brasil Tecnologia S.A. | 16381 | 16381 |
| FIT Economia de Energia S.A. | 3992 | 3992 |
| Vora Gestão e Consultoria de Energia e Gás S.A. | 27287 | 27287 |
| **Total** | **27802697** | **27844674** |

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------

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| | | |
|:---|:---|:---|
| | | **Commercial Bank**<br>12/31/2025 |
| **Key assumptions:** |  |  |
| Basis for determining the recoverable amount | Value in use: cash flows | Value in use: cash flows |
| &nbsp;&nbsp;Period of the projections of cash flows (1) |  | 5 years |
| &nbsp;&nbsp;Perpetual growth (1) |  | 4.0% |
| &nbsp;&nbsp;Pre-tax discount rate (2) |  | 18.5% |
| &nbsp;&nbsp;Discount rate (2) |  | 12.2% |
|  | **Em Dia** | **Toro Corretora** |
|  |  | 12/31/2025 |
| **Main premises:** |  |  |
| Bases for determining recoverable value | Value in use: cash flows | Value in use: cash flows |
| Cash flow projection period (1) | 5 years | 5 years |
| Perpetual Growth Rate | 3.6% | 3.6% |
| Discount rate | 13.8% | 14.5% |
| (1) Cash flow projections are based on Management's internal budget and growth plans, considering historical data, expectations and market conditions such as industry growth, interest rates and inflation rates. | (1) Cash flow projections are based on Management's internal budget and growth plans, considering historical data, expectations and market conditions such as industry growth, interest rates and inflation rates. | (1) Cash flow projections are based on Management's internal budget and growth plans, considering historical data, expectations and market conditions such as industry growth, interest rates and inflation rates. |
| (2) The discount rate is calculated based on the capital asset pricing model (CAPM). | (2) The discount rate is calculated based on the capital asset pricing model (CAPM). | (2) The discount rate is calculated based on the capital asset pricing model (CAPM). |

---

A quantitative goodwill recoverability test is performed annually.

For the goodwill recognized on the acquisition of Banco Real and Olé, as detailed in the tables above, an analysis is carried out at the end of each year as to whether there is any evidence of impairment. In the period ended March 31, 2026 and fiscal year 2025 there was no evidence of impairment. In the goodwill impairment test, discount rates and growth over perpetuity are the most sensitive assumptions for calculating the present value (value in use) of discounted future cash flows.<br>

&nbsp;&nbsp;&nbsp;&nbsp;**8.Intangible assets - Other intangible assets**

The movement of other intangible assets in the periods ended March 31, 2026 and 2025 was as follows:

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| | **Movement of:** | **Movement of:** | **Movement of:** | **Movement of:** | **Movement of:** | **Movement of:** |
| | **12/31/2025 to 03/31/2026** | **12/31/2025 to 03/31/2026** | **12/31/2025 to 03/31/2026** | 12/31/2024 to 03/31/2025 | 12/31/2024 to 03/31/2025 | 12/31/2024 to 03/31/2025 |
| | **Information Technology Development** | **Other assets** | **Total** | **Information Technology Development** | **Other assets** | **Total** |
| **Opening Balance** | **5277548** | **104761** | **5382309** | **4828519** | **105400** | **4933919** |
| Addition | 373347 | 3881 | 377228 | 342840 | 50354 | 393194 |
| Write-off | (124) | (1833) | (1957) | (26009) | (22673) | (48682) |
| Transfers | 881 | (1) | 880 | 35978 | 7927 | 43905 |
| Amortization | (414180) | (8165) | (422345) | (367796) | (4653) | (372449) |
| **Final balance** | **5237472** | **98643** | **5336115** | **4813532** | **136355** | **4949887** |
| **Estimated Useful Life** | **5 years** | **Until 5 years** |  | **5 years** | **Until 5 years** |  |

---

Amortization expenses were included in the item "Depreciation and amortization" in the income statement.

&nbsp;&nbsp;&nbsp;&nbsp;**9.Financial liabilities**

**a)Classification by nature and category**

The classification, by nature and category for evaluation purposes, of the Bank's financial liabilities other than those included in "Derivatives used as Hedge", on March 31, 2026 and December 31, 2025:

------

---

| | | | |
|:---|:---|:---|:---|
| | | | **03/31/2026** |
| | **Financial Liabilities Measured at Fair Value Through Profit or Loss** | **Financial Liabilities Measured at Amortized Cost** | **Total** |
| Deposits from Brazilian Central Bank and deposits from credit institutions | - | 150159591 | 150159591 |
| Customer deposits | - | 598847181 | 598847181 |
| Marketable debt securities | 648986 | 159679782 | 160328768 |
| Trading derivatives | 53231267 | - | 53231267 |
| Short positions | 60327958 | - | 60327958 |
| Debt Instruments Eligible to Compose Capital | - | 29338672 | 29338672 |
| Other financial liabilities | - | 76750180 | 76750180 |
| **Total** | **114208211** | **1014775406** | **1128983617** |
|  |  |  | 12/31/2025 |
|  | **Financial Liabilities Measured at Fair Value Through Profit or Loss** | **Financial Liabilities Measured at Amortized Cost** | **Total** |
| Deposits from Brazilian Central Bank and deposits from credit institutions | - | 146867521 | 146867521 |
| Customer deposits | - | 593328796 | 593328796 |
| Marketable debt securities | 3263266 | 156662290 | 159925556 |
| Trading derivatives | 59827986 | - | 59827986 |
| Short positions | 49380059 | - | 49380059 |
| Debt Instruments Eligible to Compose Capital | - | 28113937 | 28113937 |
| Other financial liabilities | - | 67414002 | 67414002 |
| **Total** | **112471311** | **992386546** | **1104857857** |

---

&nbsp;&nbsp;&nbsp;&nbsp;**b)Composition and details** 

**b.1)Deposits from the Central Bank of Brazil and Deposits from credit institutions**

---

| | | |
|:---|:---|:---|
| | **03/31/2026** | 12/31/2025 |
| Demand deposits (1) | 1336085 | 1951466 |
| Time deposits (2) | 126187989 | 119636099 |
| Repurchase agreements | 22635517 | 25279956 |
| Of which: |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Backed operations with Government Securities | 22635517 | 25279956 |
| **Total** | **150159591** | **146867521** |

---

(1) Unpaid accounts.

(2) Includes operations with credit institutions resulting from export and import financing lines, onlendings from the country (BNDES and Finame) and abroad, and other credit lines abroad.

**b.2)Customer deposits**

---

| | | |
|:---|:---|:---|
| | **03/31/2026** | 12/31/2025 |
| **Demand deposits** | **73150859** | **85108276** |
| &nbsp;&nbsp;Current accounts (1) | 21866748 | 31906984 |
| &nbsp;&nbsp;Savings accounts | 51284111 | 53201292 |
| Time deposits | 443761193 | 431658793 |
| Repurchase agreements | 81935129 | 76561727 |
| Of which: |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp; Backed operations with Private Securities | 14188756 | 18906726 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Backed operations with Government Securities | 67746373 | 57655001 |
| **Total** | **598847181** | **593328796** |

---

(1) Unpaid accounts.

------

**b.3)Bonds and securities**

---

| | | |
|:---|:---|:---|
| | **03/31/2026** | 12/31/2025 |
| Real Estate Credit Notes - LCI (1) | 52772411 | 53374694 |
| Eurobonds | 20281567 | 18052632 |
| Treasury Bills (2) | 39368279 | 38233834 |
| Agribusiness Credit Notes - LCA | 38201987 | 38740151 |
| Guaranteed Real Estate Bill - LIG (3) | 7890675 | 11524245 |
| Foreign Exchange Acceptance Resources | 1813849 | - |
| **Total** | **160328768** | **159925556** |
| (1) Real estate credit notes are fixed income securities backed by real estate credits and secured by a mortgage or fiduciary assignment of real estate. As of March 31, 2026, they have a maturity date between 2026 and 2034 (December 31, 2025 – with a maturity date between 2025 and 2035). | (1) Real estate credit notes are fixed income securities backed by real estate credits and secured by a mortgage or fiduciary assignment of real estate. As of March 31, 2026, they have a maturity date between 2026 and 2034 (December 31, 2025 – with a maturity date between 2025 and 2035). | (1) Real estate credit notes are fixed income securities backed by real estate credits and secured by a mortgage or fiduciary assignment of real estate. As of March 31, 2026, they have a maturity date between 2026 and 2034 (December 31, 2025 – with a maturity date between 2025 and 2035). |
| (2) The main characteristics of financial bills are a minimum term of two years, a minimum nominal value of R$50 and permission for early redemption of only 5% of the amount issued. As of March 31, 2026, they have a maturity date between 2026 and 2034 (December 31, 2025 – with a maturity date between 2025 and 2035). | (2) The main characteristics of financial bills are a minimum term of two years, a minimum nominal value of R$50 and permission for early redemption of only 5% of the amount issued. As of March 31, 2026, they have a maturity date between 2026 and 2034 (December 31, 2025 – with a maturity date between 2025 and 2035). | (2) The main characteristics of financial bills are a minimum term of two years, a minimum nominal value of R$50 and permission for early redemption of only 5% of the amount issued. As of March 31, 2026, they have a maturity date between 2026 and 2034 (December 31, 2025 – with a maturity date between 2025 and 2035). |
| (3) Guaranteed Real Estate Letters are fixed income securities backed by real estate credits guaranteed by the issuer and by a pool of real estate credits separate from the issuer's other assets. As of March 31, 2026, they have a maturity date between 2026 and 2045 (December 31, 2025 – with a maturity date between 2025 and 2035). | (3) Guaranteed Real Estate Letters are fixed income securities backed by real estate credits guaranteed by the issuer and by a pool of real estate credits separate from the issuer's other assets. As of March 31, 2026, they have a maturity date between 2026 and 2045 (December 31, 2025 – with a maturity date between 2025 and 2035). | (3) Guaranteed Real Estate Letters are fixed income securities backed by real estate credits guaranteed by the issuer and by a pool of real estate credits separate from the issuer's other assets. As of March 31, 2026, they have a maturity date between 2026 and 2045 (December 31, 2025 – with a maturity date between 2025 and 2035). |

---

The changes in the balance of "Bonds and securities" in the period ended March 31, 2026 and 2025 were as follows:

---

| | | |
|:---|:---|:---|
| | **01/01 to**<br>**03/31/2026** | 01/01 to<br>03/31/2025 |
| **Balance at beginning of the semester** | **159925556** | **139678128** |
| Issues and Payments | 54216808 | 29094550 |
| Payments | (51694471) | (26482377) |
| Interest | 315121 | 5865182 |
| Exchange differences and other | (2434246) | (4205899) |
| **Balance at end of the semester** | **160328768** | **143949584** |

---

The composition of "Eurobonds and other securities" is as follows:

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Issuance** | **Maturity Until** | **Interest Rate (p.a.)** | **2026** | **2025** |
| 2021 | 2031 | Until 15% | 2442791 | 2608545 |
| 2022 | 2035 | Until 15% | 1147005 | 1247459 |
| 2023 | 2031 | Until 15% | 386547 | 2022920 |
| 2024 | 2035 | Until 15% | 2447353 | 2568847 |
| 2025 | 2040 | Until 15% | 6048691 | 9604861 |
| 2026 | 2036 | Until 15% | 7809180 | - |
| **Total** |  |  | **20281567** | **18052632** |
| (1) Includes SOFR - Secured Overnight Finance Rate. | (1) Includes SOFR - Secured Overnight Finance Rate. | (1) Includes SOFR - Secured Overnight Finance Rate. | (1) Includes SOFR - Secured Overnight Finance Rate. | (1) Includes SOFR - Secured Overnight Finance Rate. |

---

**b.4)Equity Eligible Debt Instruments**

The details of the balance of the item "Debt Instruments Eligible for Capital" referring to the issuance of capital instruments to compose level I and level II of reference equity, are as follows:

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| | **Issuance** | **Maturity** | **Value in millions** | **Interest Rate (p.a.)** | **03/31/2026** | 12/31/2025 |
| Financial Bills - Tier II (1) | Nov-21 | Nov-21 | 5300 | CDI+2% | 9686729 | 9321771 |
| Financial Bills - Tier II (1) | Dec-21 | Dec-21 | 200 | CDI+2% | 365228 | 351467 |
| Financial Bills - Tier II (1) | Oct-23 | Oct-33 | 6000 | CDI+1,6% | 8378161 | 8070433 |
| Financial Bills - Tier I (2) | Sep-24 | No Maturity (Perpetual) | 7600 | CDI+1,4% | 7683071 | 7982784 |
| Financial Bills - Tier II (1) | Dec-25 | Dec-35 | 2363 | CDI+0,65% | 2472824 | 2387482 |
| Financial Bills - Tier II (1) | Mar-26 | mar-36 | 708 | CDI+0,55% | 709695 | - |
| Financial Letters - Level II (1) | Mar 26 | Mar-36 | 42 | IPCA+ 8% | 42964 | - |
| **Total** |  |  |  |  | **29338672** | **28113937** |

---

------

(1) Financial Letters issued from November 2021 to March 2026 have a redemption and repurchase option. <br> (2) Perpetual Subordinated Financial Letters (without a maturity date) have a redemption and repurchase option and semi-annual interest payments.

<br>The letters have the following common characteristics:

(a) The bills may be repurchased or redeemed by Banco Santander after the 5th (fifth) anniversary of the date of issuance of the bills, at the Bank's sole discretion or due to changes in the tax legislation applicable to the bills; or at any time, due to the occurrence of certain regulatory events.

The changes in the balance of "Equity Eligible Debt Instruments" in the periods ended March 31, 2026 and 2025 were as follows:

---

| | | |
|:---|:---|:---|
| | **01/01 to** | 01/01 to |
| | **03/31/2026** | 03/31/2025 |
| **Balance at beginning of the period** | **28113.937** | **23137.784** |
| Emission | 750600 | - |
| Interest payment Tier I (1) | 293.736 | 258.134 |
| Interest payment Tier II (1) | 773.848 | 531.061 |
| Interest Payment - Level I | (593.449) | (478.393) |
| **Balance at end of the period** | **29338.672** | **23448.586** |

---

(1) The interest remuneration referring to the Debt Instrument Eligible for Tier I and II Capital was recorded as a contra entry to the result for the period as "Interest and Similar Expenses ".

&nbsp;&nbsp;&nbsp;&nbsp;**10.Provision for judicial and administrative proceedings, commitments and other provisions**

&nbsp;&nbsp;&nbsp;&nbsp;**a)Composition**

The composition of the balance of the item "Provisions" is as follows:

---

| | | |
|:---|:---|:---|
| | **03/31/2026** | 12/31/2025 |
| Pension fund obligations and similar requirements (1) | 1308005 | 1357203 |
| Provisions for judicial and administrative proceedings, commitments and other provisions | 11021860 | 10447279 |
| &nbsp;&nbsp; Judicial and administrative proceedings under the responsibility of former controlling stockholders | 496 | 496 |
| &nbsp;&nbsp; Judicial and administrative proceedings | 10121830 | 9495060 |
| Of which: |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Civil | 3596082 | 3459137 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Labor | 4139018 | 3835099 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Tax and Social Security | 2386730 | 2200824 |
| &nbsp;&nbsp;&nbsp;&nbsp;Provision for contingent liabilities | 767886 | 787837 |
| &nbsp;&nbsp;&nbsp;&nbsp;Other provisions | 131648 | 163886 |
| **Total** | **12329865** | **11804482** |

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&nbsp;&nbsp;&nbsp;&nbsp;**b) Tax, Social Security, Labor and Civil Provisions**

Banco Santander and its subsidiaries are an integral part of legal and administrative proceedings of a tax, social security, labor and civil nature, arising in the normal course of their activities.

The provisions were constituted based on the nature, complexity and history of the actions and the loss assessment of the companies' actions based on the opinions of internal and external legal advisors. Banco Santander's policy is to fully provision the value at risk of shares whose assessment is probable loss.

Management understands that the provisions set up are sufficient to cover possible losses arising from legal and administrative proceedings as follows:

**b.1)Judicial and Administrative Proceedings of a Tax and Social Security Nature**

**Main judicial and administrative proceedings with probable risk of loss**

Banco Santander and its controlled companies are parties to legal and administrative proceedings related to tax and social security discussions, which are classified based on the opinion of legal advisors, as risk of probable loss.

------

**Provisional Contribution on Financial Transactions (CPMF) in Customer Operations -** In May 2003, the Brazilian Federal Revenue Service issued an infraction notice to Santander Distribuidora de Títulos e Valores Mobiliários Ltda. (Santander DTVM) and another notice to Banco Santander (Brasil) S.A. The subject of the notices was the collection of CPMF on operations carried out by Santander DTVM in the management of its clients' resources and clearing services provided by the Bank to Santander DTVM, which occurred during the years 2000, 2001, and 2002. The administrative process ended unfavorably for both companies. On July 3, 2015, the Bank and Santander Brasil Tecnologia S.A. (current name of Produban Serviços de Informática S.A. and Santander DTVM) filed a lawsuit seeking to annul both tax debts. The aforementioned action resulted in a judgment and ruling of dismissal, which led to the filing of a Special Appeal to the Superior Court of Justice (STJ) and an Extraordinary Appeal to the Supreme Federal Court (STF). The cases related to the CPMF (Provisional Contribution on Financial Transactions) in Client Operations were subject to adherence to the Comprehensive Transaction Program (PTI), established by the Ministry of Finance. In December 2025, the amounts paid, totaling R$1,067 million established in the transaction, were fully provisioned.

**National Social Security Institute (INSS) -** R$ $167 million (31/12/2025 - R$167 million in Consolidated): Banco Santander and its controlled companies are administratively and judicially disputing the collection of social security contributions and education salary on various payments that, according to legal advisors, are not considered salary.

**Service Tax (ISS) - Financial Institutions -** R$352 million(31/12/2025 - R$335 million in Consolidated): The Bank and its controlled companies are administratively and judicially disputing the requirement, by several municipalities, to pay ISS on various revenues arising from operations that are not usually classified as the provision of services. In addition, other actions involving ISS, classified as a possible loss risk, are described in **Note 10.b.4.**

**b.2)Judicial and Administrative Proceedings of a Labor Nature**

These are actions filed by Unions, Associations, the Public Ministry of Labor and former employees claiming labor rights that they believe are due, in particular the payment of "overtime" and other labor rights, including processes related to retirement benefits.

For lawsuits considered common and similar in nature, provisions are recorded based on the historical average of closed lawsuits. Actions that do not meet the previous criteria are provisioned in accordance with an individual assessment carried out, with provisions being constituted based on the probable risk of loss, the law and jurisprudence in accordance with the loss assessment carried out by legal advisors.

**b.3)Judicial and Administrative Proceedings of a Civil Nature**

These provisions generally arise from: (1) actions requesting a review of contractual terms and conditions or requests for monetary adjustments, including alleged effects of the implementation of various government economic plans, (2) actions arising from financing contracts, (3) enforcement actions; and (4) actions for compensation for losses and damages. For civil actions considered common and similar in nature, provisions are recorded based on the historical average of closed cases. Claims that do not meet the previous criteria are provisioned in accordance with an individual assessment carried out, with provisions being constituted based on the probable risk of loss, the law and jurisprudence in accordance with the loss assessment carried out by legal advisors.

The main processes classified as probable loss risk are described below:

**Compensation Suits** - Refer to compensation for material and/or moral damage, relating to the consumer relationship, mainly dealing with issues relating to credit cards, direct consumer credit, current accounts, billing and loans and other matters. In actions relating to causes considered similar and usual for the business, in the normal course of the Bank's activities, the provision is constituted based on the historical average of closed processes. Actions that do not meet the previous criteria are provisioned in accordance with an individual assessment carried out, with provisions being constituted based on the probable risk of loss, the law and jurisprudence in accordance with the loss assessment carried out by legal advisors.

**Economic Plans** - They refer to judicial discussions, which plead alleged inflationary purges resulting from Economic Plans (Bresser, Verão, Collor I and II), as they understand that such plans violated acquired rights related to the application of inflationary indices supposedly due to Savings Accounts, Judicial Deposits and Term Deposits (CDBs). The actions are provisioned based on the individual assessment of loss carried out by legal advisors.

Banco Santander is also a party to public civil actions on the same matter, filed by consumer protection entities, the Public Prosecutor's Office or Public Defenders' Offices. The constitution of a provision is only made for cases with probable risk, based on requests for individual executions. The issue is still under analysis by the STF. There is jurisprudence in the STF favorable to Banks in relation to an economic phenomenon similar to that of savings, as in the case of correction of time deposits (CDBs) and corrections applied to contracts (table).

------

On April 14, 2010, the Superior Court of Justice (STJ) decided that the deadline for filing public civil actions discussing the purges is 5 years from the date of the plans, but this decision has not yet become final. Therefore, with this decision, most of the actions, as proposed after the 5-year period, will probably be judged unfounded, reducing the amounts involved. The STJ also decided that the deadline for individual savers to qualify for Public Civil Actions is also 5 years, counting from the final judgment of the respective sentence. Banco Santander believes in the success of the theses defended before these courts due to their content and foundation.

At the end of 2017, the Federal Attorney General's Office (AGU), Bacen, the Consumer Protection Institute (Idec), the Brazilian Savers Front (Febrapo) and the Brazilian Federation of Banks (Febraban) signed an agreement that seeks to end the legal disputes over Economic Plans.

The discussions focused on defining the amount that would be paid to each author, according to the balance in the book on the date of the plan. The total value of payments will depend on the number of subscriptions, and also on the number of savers who have proven in court the existence of the account and the balance on the anniversary date of the index change. The agreement negotiated between the parties was approved by the STF.

In a decision handed down by the STF, there was a national suspension of all processes dealing with the issue for the period of validity of the agreement, with the exception of cases in definitive compliance with a sentence.

On March 11, 2020, the agreement was extended by means of an addendum, with the inclusion of actions that only involve the discussion of the Collor I Plan. This extension has a term of 5 years and the approval of the terms of the addendum occurred on the 3rd June 2020.

In May 2025, there was a trial of the Claim of Non-Compliance with Fundamental Precept (ADPF) number 165 recognizing the constitutionality of the Bresser, Verão, Collor I and II plans and guaranteeing savers the receipt of the amounts established in the collective agreement and setting a period of 24 months for new savers to join.

Management considers that the provisions constituted are sufficient to cover the risks involved with the economic plans, considering the approved agreement.

**b.4)Contingent Tax, Social Security, Labor, and Civil Liabilities Classified as Possible Risk of Loss**

These are judicial and administrative proceedings of a tax and social security, labor and civil nature classified, based on the opinion of legal advisors, as a possible risk of loss, and are therefore not provisioned.

Tax actions classified as possible loss totaled R$36,916 million in Consolidated (12/31/2025 - R$37,518 million in Consolidated), with the main processes being as follows:

**PIS and COFINS -** Legal actions brought by Banco Santander (Brasil) S.A. and other entities of the Group to rule out the application of Law No. 9.718/98, which changes the calculation basis of the Social Integration Program (PIS) and the Contribution for Social Security Financing (COFINS), extending it to all entities' revenues, and not just revenues arising from the provision of services. In relation to the Banco Santander (Brasil) S.A. case, in 2015 the Federal Supreme Court (STF) admitted the extraordinary appeal filed by the Federal Union in relation to PIS, and dismissed the extraordinary appeal filed by the Federal Public Ministry in relation to the contribution to COFINS, confirming the decision of the Federal Regional Court in favor of Banco Santander (Brasil) S.A. in August 2007. The STF decided, through General Repercussion, Topic 372 and partially accepted the Federal Union's appeal, establishing the thesis that it applies PIS/COFINS on operating revenues arising from typical activities of financial institutions. With the publication of the ruling, the Bank presented a new appeal in relation to PIS, and is awaiting analysis. Based on the assessment of the legal advisors, the risk prognosis was classified as possible loss, with an outflow of appeal not being likely. As of March 31, 2026, the amount involved is R$2,382 million. For other legal actions, the respective PIS and COFINS obligations were established.

**INSS on Profit Sharing or Results (PLR) -** The Bank and its controlled companies have legal and administrative proceedings arising from questions from the tax authorities, regarding the collection of social security contributions on payments made as a share in profits and results. On March 31, 2026, the value was approximately R$11,902 million.

**Service Tax (ISS) - Financial Institutions -** Banco Santander and its controlled companies are administratively and judicially discussing the requirement, by several municipalities, to pay ISS on various revenues arising from operations that are not usually classified as provision of services. On March 31, 2026, the value was approximately R$3,806 million.

**Unapproved Compensation -** The Bank and its affiliates discuss administratively and judicially with the Federal Revenue Service the non-approval of tax offsets with credits resulting from overpayment or undue payment. On March 31, 2026, the value was approximately R$6,193 million.

------

**Losses in Credit Operations -** the Bank and its controlled companies contested the tax assessments issued by the Brazilian Federal Revenue alleging the undue deduction of losses in credit operations from the IRPJ and CSLL calculation bases as they allegedly did not meet the requirements of applicable laws. On March 31, 2026, the value was approximately R$1,171 million.

**Use of CSLL Tax Loss and Negative Base –** Assessment notices drawn up by the Brazilian Federal Revenue Service in 2009 and 2019 for alleged undue compensation of tax losses and negative CSLL basis, as a consequence of tax assessments issued in previous periods. Judgment at the administrative level is awaited. On March 31, 2026, the value was approximately R$2,782 million.

**Amortization of Goodwill from Banco Sudameris Acquisition -** The tax authorities issued tax assessment notices to demand payment of IRPJ and CSLL, including late payment charges, related to the tax deduction of the amortization of the goodwill paid in the acquisition of Banco Sudameris, for the base period from 2007 to 2012. Banco Santander filed its respective administrative defenses. The first period assessed is awaiting analysis of an appeal at CARF. Regarding the period from 2009 to 2012, a lawsuit was filed to discuss the IRPJ portion, due to the unfavorable conclusion in the administrative proceeding. For the CSLL portion of this same period, we request the withdrawal of the Special Appeal filed, aiming to take advantage of the benefits established by Law No. 14,689/2023 (quality vote). Legal action was also taken for the remaining portion. On March 31, 2026, the amount was approximately R$848 million.

**IRPJ and CSLL - Capital Gain -** the Brazilian Federal Revenue Service issued a tax assessment notice against Santander Seguros (legal successor to ABN AMRO Brasil Dois Participações S.A. (AAB Dois Par) charging income tax and social contribution related to the 2005 fiscal year. The Brazilian Federal Revenue Service claims that the capital gain on the sale of shares in Real Seguros S.A. and Real Vida e Previdência S.A by AAB Dois Par should be taxed at a rate of 34.0% instead of 15.0%. The assessment was administratively challenged with. based on the understanding that the tax treatment adopted in the transaction was in accordance with current tax legislation and the capital gain was duly taxed. The Administrative process ended unfavorably to the Company. In July 2020, the Company filed a lawsuit seeking to cancel the debt. An unfavorable decision was made in the first instance, an appeal will be filed with the Court. Banco Santander is responsible for any adverse result in this process as former controller of Zurich Santander Brasil Seguros e Previdência S.A. On March 31, 2026, the amount was approximately R$731 million.

**IRRF – Foreign Remittance –** The Company filed a lawsuit seeking to eliminate the Withholding Income Tax – IRRF, on payments derived from the provision of technology services by companies based abroad, due to the existence of International Treaties signed between Brazil and Chile; Brazil-Mexico and Brazil-Spain, thus avoiding double taxation. A favorable sentence was given and there was an appeal by the National Treasury, to the Federal Regional Court of the 3rd Region, where it awaits judgment. On March 31, 2026, the value was approximately R$483 million.

Labor claims classified as possible loss totaled R$1,426 million and R$2,177 million respectively, in the consolidated figures.

&nbsp;&nbsp;&nbsp;&nbsp;**11.Stockholders' equity**

&nbsp;&nbsp;&nbsp;&nbsp;**a)Capital Stock**

In accordance with the Bylaws, Banco Santander's Capital Stock may be increased up to the limit of the authorized capital, regardless of statutory reform, upon deliberation by the Board of Directors and through the issuance of up to 9,090,909,090 (nine billion, ninety million, nine hundred and nine thousand and ninety) shares, observing the legal limits established regarding the number of preferred shares. Any capital increase exceeding this limit will require shareholder approval.

At the Ordinary General Meeting held on April 26, 2024, the increase in share capital in the amount of R$10,000,000,000.00 (ten billion reais) was approved, without the issuance of new shares, through the capitalization of part of the balance of the statutory profit reserve.

The Capital Stock, fully subscribed and paid in, is divided into registered-registered shares, with no par value.

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| | | |<br>**03/31/2026** | | | **In Thousands of Shares**<br>12/31/2025 |
| | **Ordinary** | **Preferred** | **Total** | **Ordinary** | **Preferred** | **Total** |
| Country Residents | 122105 | 147914 | 270019 | 129745 | 155583 | 285328 |
| Residents Abroad | 3696590 | 3531922 | 7228512 | 3688950 | 3524253 | 7213203 |
| **Total** | **3818695** | **3679836** | **7498531** | **3818695** | **3679836** | **7498531** |
| (-) Treasury Shares | (5550) | (5550) | (11100) | (13666) | (13665) | (27331) |
| **Total in Circulation** | **3813145** | **3674286** | **7487431** | **3805029** | **3666171** | **7471200** |

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&nbsp;&nbsp;&nbsp;&nbsp;**b)Dividends and Interest on Equity**

Statutorily, shareholders are guaranteed minimum dividends of 25% of the Net Profit for each year, adjusted in accordance with legislation. Preferred shares do not have voting rights and cannot be converted into common shares, but they have the same rights and advantages granted to common shares, in addition to priority in the distribution of dividends and an additional 10% on dividends paid to common shares, and in the reimbursement of capital, without premium, in the event of the Bank's dissolution.

Dividends were calculated and paid in accordance with the Brazilian Corporation Law.

Before the Annual Shareholders' Meeting, the Board of Directors may decide on the declaration and payment of dividends on profits earned, based on: (i) balance sheets or Profits Reserve existing in the last balance sheet or (ii) balance sheets issued in periods of less than six months, provided that the total dividends paid in each semester of the fiscal year do not exceed the value of the Capital Reserves. These dividends are fully allocated to the mandatory dividend.

Below, we present the distribution of Dividends and Interest on Equity made on March 31, 2026 and December 31, 2025.

---

| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
| | | | | | | | **03/31/2026** |
| | | **Reais per Thousands of Shares/Units** | **Reais per Thousands of Shares/Units** | **Reais per Thousands of Shares/Units** | **Reais per Thousands of Shares/Units** | **Reais per Thousands of Shares/Units** | **Reais per Thousands of Shares/Units** |
| | | **Gross** | **Gross** | **Gross** | **Net** | **Net** | **Net** |
| |<br>**In Thousands**<br>**of Reais** | **Ordinary** | **Preferred** | **Unit** | **Ordinary** | **Preferred** | **Unit** |
| Interest on Equity (1)(2) | 2000000 | 255.17 | 280.69 | 535.86 | 210.52 | 231.57 | 442.09 |
| **Total** | **2000000** |  |  |  |  |  |  |

---

(1) Approved by the Board of Directors on January 9, 2026, paid on February 5, 2026, without any remuneration for monetary adjustment.

(2) They were fully allocated to the mandatory minimum dividends distributed by the Bank for the financial year ending 31 December 2026.

---

| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
| | | | | | | | 12/31/2025 |
| | **In Thousands** | **Reais per Thousands of Shares/Units** | **Reais per Thousands of Shares/Units** | **Reais per Thousands of Shares/Units** | **Reais per Thousands of Shares/Units** | **Reais per Thousands of Shares/Units** | **Reais per Thousands of Shares/Units** |
| | **of Brazilian Real** | **Gross** | **Gross** | **Gross** | **Net** | **Net** | **Net** |
| | | **Ordinary** | **Preferred** | **Unit** | **Ordinary** | **Preferred** | **Unit** |
| Interest on Equity (1)(6) | 1500000 | 191.68 | 210.84 | 402.52 | 162.92 | 179.22 | 342.14 |
| Interest on Equity (2)(6) | 1500000 | 191.39 | 210.53 | 401.92 | 162.68 | 178.95 | 341.63 |
| Interest on Equity (3)(6) | 2000000 | 255.18 | 280.70 | 535.88 | 216.90 | 238.59 | 455.49 |
| Interest on Equity (4)(6) | 2000000 | 255.18 | 280.70 | 535.88 | 216.90 | 238.59 | 455.49 |
| Interim Dividends (5)(6) | 620000 | 79.10 | 87.01 | 166.11 | 67.23 | 73.96 | 141.19 |
| **Total** | **7620000** |  |  |  |  |  |  |
| (1) Approved by the Board of Directors on January 10, 2025, paid on February 12, 2025, without any remuneration for monetary adjustment. | (1) Approved by the Board of Directors on January 10, 2025, paid on February 12, 2025, without any remuneration for monetary adjustment. | (1) Approved by the Board of Directors on January 10, 2025, paid on February 12, 2025, without any remuneration for monetary adjustment. | (1) Approved by the Board of Directors on January 10, 2025, paid on February 12, 2025, without any remuneration for monetary adjustment. | (1) Approved by the Board of Directors on January 10, 2025, paid on February 12, 2025, without any remuneration for monetary adjustment. | (1) Approved by the Board of Directors on January 10, 2025, paid on February 12, 2025, without any remuneration for monetary adjustment. | (1) Approved by the Board of Directors on January 10, 2025, paid on February 12, 2025, without any remuneration for monetary adjustment. | (1) Approved by the Board of Directors on January 10, 2025, paid on February 12, 2025, without any remuneration for monetary adjustment. |
| (2) Approved by the Board of Directors on April 10, 2025, paid on May 8, 2025, without any remuneration for monetary adjustment. | (2) Approved by the Board of Directors on April 10, 2025, paid on May 8, 2025, without any remuneration for monetary adjustment. | (2) Approved by the Board of Directors on April 10, 2025, paid on May 8, 2025, without any remuneration for monetary adjustment. | (2) Approved by the Board of Directors on April 10, 2025, paid on May 8, 2025, without any remuneration for monetary adjustment. | (2) Approved by the Board of Directors on April 10, 2025, paid on May 8, 2025, without any remuneration for monetary adjustment. | (2) Approved by the Board of Directors on April 10, 2025, paid on May 8, 2025, without any remuneration for monetary adjustment. | (2) Approved by the Board of Directors on April 10, 2025, paid on May 8, 2025, without any remuneration for monetary adjustment. | (2) Approved by the Board of Directors on April 10, 2025, paid on May 8, 2025, without any remuneration for monetary adjustment. |
| (3) Resolved by the Board of Directors on July 10, 2025, paid on August 9, 2025, without any remuneration for monetary adjustment. | (3) Resolved by the Board of Directors on July 10, 2025, paid on August 9, 2025, without any remuneration for monetary adjustment. | (3) Resolved by the Board of Directors on July 10, 2025, paid on August 9, 2025, without any remuneration for monetary adjustment. | (3) Resolved by the Board of Directors on July 10, 2025, paid on August 9, 2025, without any remuneration for monetary adjustment. | (3) Resolved by the Board of Directors on July 10, 2025, paid on August 9, 2025, without any remuneration for monetary adjustment. | (3) Resolved by the Board of Directors on July 10, 2025, paid on August 9, 2025, without any remuneration for monetary adjustment. | (3) Resolved by the Board of Directors on July 10, 2025, paid on August 9, 2025, without any remuneration for monetary adjustment. | (3) Resolved by the Board of Directors on July 10, 2025, paid on August 9, 2025, without any remuneration for monetary adjustment. |
| (4) Resolved by the Board of Directors on October 10, 2025, paid on November 8, 2025, without any remuneration for monetary adjustment. | (4) Resolved by the Board of Directors on October 10, 2025, paid on November 8, 2025, without any remuneration for monetary adjustment. | (4) Resolved by the Board of Directors on October 10, 2025, paid on November 8, 2025, without any remuneration for monetary adjustment. | (4) Resolved by the Board of Directors on October 10, 2025, paid on November 8, 2025, without any remuneration for monetary adjustment. | (4) Resolved by the Board of Directors on October 10, 2025, paid on November 8, 2025, without any remuneration for monetary adjustment. | (4) Resolved by the Board of Directors on October 10, 2025, paid on November 8, 2025, without any remuneration for monetary adjustment. | (4) Resolved by the Board of Directors on October 10, 2025, paid on November 8, 2025, without any remuneration for monetary adjustment. | (4) Resolved by the Board of Directors on October 10, 2025, paid on November 8, 2025, without any remuneration for monetary adjustment. |
| (5) Approved by the Board of Directors on December 22, 2025, they will be paid on February 5, 2026, without any remuneration for monetary adjustment. | (5) Approved by the Board of Directors on December 22, 2025, they will be paid on February 5, 2026, without any remuneration for monetary adjustment. | (5) Approved by the Board of Directors on December 22, 2025, they will be paid on February 5, 2026, without any remuneration for monetary adjustment. | (5) Approved by the Board of Directors on December 22, 2025, they will be paid on February 5, 2026, without any remuneration for monetary adjustment. | (5) Approved by the Board of Directors on December 22, 2025, they will be paid on February 5, 2026, without any remuneration for monetary adjustment. | (5) Approved by the Board of Directors on December 22, 2025, they will be paid on February 5, 2026, without any remuneration for monetary adjustment. | (5) Approved by the Board of Directors on December 22, 2025, they will be paid on February 5, 2026, without any remuneration for monetary adjustment. | (5) Approved by the Board of Directors on December 22, 2025, they will be paid on February 5, 2026, without any remuneration for monetary adjustment. |
| (6) They were fully allocated to the mandatory minimum dividends distributed by the Bank for the financial year ending December 31, 2025. | (6) They were fully allocated to the mandatory minimum dividends distributed by the Bank for the financial year ending December 31, 2025. | (6) They were fully allocated to the mandatory minimum dividends distributed by the Bank for the financial year ending December 31, 2025. | (6) They were fully allocated to the mandatory minimum dividends distributed by the Bank for the financial year ending December 31, 2025. | (6) They were fully allocated to the mandatory minimum dividends distributed by the Bank for the financial year ending December 31, 2025. | (6) They were fully allocated to the mandatory minimum dividends distributed by the Bank for the financial year ending December 31, 2025. | (6) They were fully allocated to the mandatory minimum dividends distributed by the Bank for the financial year ending December 31, 2025. | (6) They were fully allocated to the mandatory minimum dividends distributed by the Bank for the financial year ending December 31, 2025. |

---

&nbsp;&nbsp;&nbsp;&nbsp;**c)Profit Reserves**

The Net Profit calculated, after deductions and legal provisions, will be allocated as follows:

**Legal Reserve**

In accordance with Brazilian corporate legislation, 5% for the constitution of the Legal Reserve, until it reaches 20% of the capital. This reserve is intended to ensure the integrity of the Capital Stock and can only be used to offset losses or increase capital.

**Capital Reserves**

The Bank's Capital Reserves are made up of: Goodwill reserve for subscription of shares and other Capital Reserves, and can only be used to absorb losses that exceed Accrued Profits and Profits Reserve; redemption, reimbursement or acquisition of shares issued by us; incorporation into Capital Stock; or payment of dividends to preferred shares in certain circumstances.

------

**Reserve for Dividend Equalization** 

After the allocation of dividends, the balance, if any, may, upon proposal from the Executive Board and approved by the Board of Directors, be allocated to the formation of a reserve for dividend equalization, which will be limited to 50% of the value of the Capital Stock. This reserve is intended to guarantee resources for the payment of dividends, including in the form of Interest on Equity, or its anticipations, aiming to maintain the flow of Compensation to shareholders.

&nbsp;&nbsp;&nbsp;&nbsp;**d)Treasury Shares**

At a meeting held on September 25, 2025, the Board of Directors approved, continuing the Share Buyback Program that expired on August 6, 2025, a new Share Buyback Program for Units and ADRs issued by Banco Santander, directly or through its Cayman Islands branch, for treasury holding or subsequent sale.

The Share Buyback Program covers the acquisition of up to 37,463,447 Units, representing 37,463,447 common shares and 37,463,447 preferred shares, which, as of December 31, 2025, corresponded to approximately 1% of the Bank's share capital. On March 31, 2026, Banco Santander had 369,138,410 common shares and 396,942,820 preferred shares outstanding.

The purpose of the share buyback is (1) to maximize shareholder value creation through efficient management of the capital structure; and (2) to enable the payment of directors, management-level employees and other employees of the Bank and companies under its control, in accordance with the Long-Term Incentive Plans. The term of the Share Buyback Program is up to 18 months from September 26, 2025, ending on March 26, 2027.

---

| | | | |
|:---|:---|:---|:---|
| | |<br>**03/31/2026** | **Bank/Consolidated**<br>**In Thousands of Shares**<br>12/31/2025 |
| | | **Quantity** | **Quantity** |
| | | **Units** | **Units** |
| **Treasury Shares at the Beginning of the Period** |  | **19451** | **19451** |
| Share Acquisitions |  | - | - |
| Disposals - Share-Based Compensation |  | (5785) | (5785) |
| **Treasury Shares at End of the Period** |  | **13666** | **13666** |
| Sub-Total of Treasury Shares in Thousands of Reais | R$ | 490750 | 717789 |
| Issuance Costs in Thousands of Reais | R$ | 1771 | 1771 |
| **Balance of Treasury Shares in Thousands of Reais** | **R$** | **492521** | **719560** |
| **Cost/Share Price** |  | **Units** | **Units** |
| Minimum Cost (\*) | R$ | 7.55 | 7.55 |
| Weighted Average Cost (\*) | R$ | 27.02 | 27.33 |
| Maximum Cost (\*) | R$ | 49.55 | 49.55 |
| Share Price | R$ | 30.64 | 28.22 |

---

(\*) Considering since the beginning of operations on the stock exchange.

&nbsp;&nbsp;&nbsp;&nbsp;**12.Income Tax**

Total income taxes for the six-month period are reconciled with accounting profit as follows:

---

| | | |
|:---|:---|:---|
| | **01/01 to**<br>**03/31/2026** | 01/01 to<br>03/31/2025 |
| **Operating Income before Tax** | **4710085** | **4619867** |
| **Tax (25% of Income Tax and 20% of Social Contribution)** | **(2119539)** | **(2078940)** |
| **PIS and COFINS (net of income tax and social contribution) (1)** | **(1270854)** | **(1278737)** |
| **Non - Taxable/Indeductible :** |  |  |
| &nbsp;&nbsp;Companies accounted by the equity method | 56134 | 38977 |
| &nbsp;&nbsp;Net Indeductible Expenses of Non-Taxable Income (2) | 513669 | 382631 |
| **Adjustments:** |  |  |
| &nbsp;&nbsp;IR/CS Constitution on temporary differences | 10215 | 42501 |
| &nbsp;&nbsp;Interest on equity | 900000 | 675000 |
| &nbsp;&nbsp;CSLL Tax rate differential effect (3) | 151228 | 194221 |
| &nbsp;&nbsp;Others Adjustments | 330611 | 556064 |
| **Income tax and Social contribution** | **(1428536)** | **(1468284)** |
| &nbsp;&nbsp; Of which: |  |  |

---

------

&nbsp;&nbsp;&nbsp;&nbsp;

---

| | | |
|:---|:---|:---|
| &nbsp;&nbsp;Current taxes | (2061837) | (2602756) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Deferred taxes | 633301 | 1134472 |
| Taxes paid in the period | (1916630) | (2437265) |

---

(1) PIS and COFINS are considered as components of the profit base (net base of certain income and expenses); therefore, and in accordance with IAS 12, they are accounted for as income taxes.

(2) Mainly includes the tax effect on revenues from updates of judicial deposits and other revenues and expenses that do not qualify as temporary differences.

(3) Effect of the rate differential for other non-financial and financial companies, whose social contribution rates are 9% and 15%.

------

&nbsp;&nbsp;&nbsp;&nbsp;**13.Detailing of income accounts**

&nbsp;&nbsp;&nbsp;&nbsp;**a)Personnel expenses**

---

| | | |
|:---|:---|:---|
| | **01/01 to**<br>**03/31/2026** | 01/01 to<br>03/31/2025 |
| Salary | 1829388 | 1870538 |
| Social security costs | 383393 | 435366 |
| Benefits | 414227 | 433892 |
| Defined benefit pension plans | 1322 | 1359 |
| Contributions to defined contribution pension funds | 109758 | 112895 |
| Share-based payment costs (1) | 20988 | 27862 |
| Training | 15243 | 21040 |
| Other personnel expenses | 107557 | 109403 |
| **Total** | **2881876** | **3012355** |

---

(1) It refers to the provision for the bonus referenced in shares.

&nbsp;&nbsp;&nbsp;&nbsp;**b)Other Administrative Expenses**

---

| | | |
|:---|:---|:---|
| | **01/01 to**<br>**03/31/2026** | 01/01 to<br>03/31/2025 |
| Property, fixtures and supplies | 169344 | 176590 |
| Technology and systems | 872660 | 726305 |
| Advertising | 113443 | 119257 |
| Communications | 66418 | 76566 |
| Subsistence allowance and travel expenses | 53079 | 54451 |
| Taxes other than income tax | 26101 | 36537 |
| Surveillance and cash courier services | 86208 | 105972 |
| Insurance premiums | 5222 | 6065 |
| Specialized and technical services | 502212 | 525260 |
| Other administrative expenses | 553497 | 405747 |
| **Total** | **2448184** | **2232750** |

---

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&nbsp;&nbsp;&nbsp;&nbsp;**14.Employee Benefit Plan**

&nbsp;&nbsp;&nbsp;&nbsp;**a)Share-Based Compensation**

Banco Santander maintains long-term incentive programs linked to the performance of its instruments, both in Brazil (SANB11) and globally. The plans aim to align the interests of executives and shareholders, promoting a focus on the sustainability of market value and the creation of long-term value. Members of the Executive Board and other executives nominated by the Board of Directors may participate, considering criteria of seniority and strategic impact. Members of the Board of Directors participate only if they hold positions on the Executive Board.

---

| | | | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| **Program** | **Type of Liquidation** | **Vesting Period** | **Exercise / Liquidation Period** |  | **01/01 to** |  |  | 01/01 to |  |  |  |
| **Program** | **Type of Liquidation** | **Vesting Period** | **Exercise / Liquidation Period** |  | **03/31/2026** |  |  | 03/31/2025 |  |  |  |
| **Local** | **Santander Brazil Bank Shares&nbsp;&nbsp;&nbsp;&nbsp;** | 01/2023 to 12/2026 | 2025 and 2026 | R$ | 1375000 | (1) | R$ | 1750000 | (1) |  |  |
| **Local** | **Santander Brazil Bank Shares&nbsp;&nbsp;&nbsp;&nbsp;** | 01/2024 to 12/2027 | 2026, 2027 and 2028 | R$ | 200000 | (2) | R$ | 500000 | (2) |  |  |
| **Local** | **Santander Brazil Bank Shares&nbsp;&nbsp;&nbsp;&nbsp;** | 01/2025 to 12/2028 | 2026 to 2029 | R$ | 5525000 | (3) | R$ | 2500000 | (3) |  |  |
| **Local** | **Santander Brazil Bank Shares&nbsp;&nbsp;&nbsp;&nbsp;** | 01/2022 to 12/2025 | 2025 | R$ |  | SANB11 (4) | R$ | 118363 | SANB11 (4) |  |  |
| **Local** | **Santander Brazil Bank Shares&nbsp;&nbsp;&nbsp;&nbsp;** | 01/2023 to 12/2026 | 2026 | R$ | 11820 | SANB11 (5) | R$ | 15637 | SANB11 (5) |  |  |
| **Local** | **Santander Brazil Bank Shares&nbsp;&nbsp;&nbsp;&nbsp;** | 01/2025 to 12/2028 | 2027 to 2028 | R$ | 171522 | SANB11 (6) | R$ |  | SANB11 (6) |  |  |
| **Local** | **Santander Brazil Bank Shares&nbsp;&nbsp;&nbsp;&nbsp;** | **Global** | **Santander Spain Shares and Options** | 2023 |  | EUR 3,67 |  | Global Actions (7) |  |  | Global Actions (7) |
| **Local** | **Santander Brazil Bank Shares&nbsp;&nbsp;&nbsp;&nbsp;** | **Global** | **Santander Spain Shares and Options** | 2023, with a limit for exercising options until 2030 | 2023, with a limit for exercising options until 2030 |  | 385956 | Global Stock Options (7) |  | 420394 | Global Stock Options (7) |
| **Local** | **Santander Brazil Bank Shares&nbsp;&nbsp;&nbsp;&nbsp;** | **Global** | **Santander Spain Shares and Options** | 02/2024 | 02/2024 | EUR 2,685 |  | Global Actions (7) |  |  | Global Actions (7) |
| 02/2024, with a limit for exercising options until 02/2029 | 02/2024, with a limit for exercising options until 02/2029 | **Global** | **Santander Spain Shares and Options** |  | 105534 | Global Stock Options (7) |  | 110534 | Global Stock Options (7) |  |  |
| 2025 | 2025 | **Global** | **Santander Spain Shares and Options** | EUR 3,104 |  | Global Actions (7) |  | 95786 | Global Actions (7) |  |  |
| 2025, with a limit for exercising options until 2030 | 2025, with a limit for exercising options until 2030 | **Global** | **Santander Spain Shares and Options** |  | 22989 | Global Stock Options (7) |  | 45978 | Global Stock Options (7) |  |  |
| 2026 | 2026 | **Global** | **Santander Spain Shares and Options** | EUR 3,088 | 175476 | Global Actions (7) |  | 175476 | Global Actions (7) |  |  |
| 2026, with a limit for exercising options until 2033 | 2026, with a limit for exercising options until 2033 | **Global** | **Santander Spain Shares and Options** |  | 472469 | Global Stock Options (7) |  | 472469 | Global Stock Options (7) |  |  |
| 2027, with a limit for exercising options until 2032 | 2027, with a limit for exercising options until 2032 | **Global** | **Santander Spain Shares and Options** | EUR 48,08 | 8528 | Global Actions (7) |  | 8528 | Global Actions (7) |  |  |
|  |  | **Global** | **Santander Spain Shares and Options** |  | 80476 | Global Stock Options (7) |  |  | Global Stock Options (7) |  |  |
| 2028, with a limit for exercising options until 2033 | 2028, with a limit for exercising options until 2033 | **Global** | **Santander Spain Shares and Options** | EUR 60,34 | 1866 | Global Actions (7) (8) |  |  | Global Actions (7) (8) |  |  |
|  |  | **Global** | **Santander Spain Shares and Options** |  | 9007 | Global Stock Options (7) (8) |  | 2411 | Global Stock Options (7) (8) |  |  |
| 2029 |  | **Global** | **Santander Spain Shares and Options** | EUR 54,14 | 5340 | Global Actions (7) |  | 5340 | Global Actions (7) |  |  |
| 2030 |  | **Global** | **Santander Spain Shares and Options** | EUR 61,07 | 5745 | Global Actions (7) |  |  | Global Actions (7) |  |  |
| 12/2024, with payment in 2025 | 12/2024, with payment in 2025 | **Global** | **Santander Spain Shares and Options** |  |  | SANB11 (9) |  | 50419 | SANB11 (9) |  |  |
| 12/2025, with payment in 2026 | 12/2025, with payment in 2026 | **Global** | **Santander Spain Shares and Options** |  | 52037 | SANB11 |  | 70346 | SANB11 |  |  |
| **Balance of Plans on March 31, 2026** | **Balance of Plans on March 31, 2026** |  |  | R$ | 7100000 | (1) (2) | R$ | 4750000 | (1) (2) |  |  |
| **Balance of Plans on March 31, 2026** | **Balance of Plans on March 31, 2026** |  |  |  | 235379 | Actions SANB11 |  | 754765 | Actions SANB11 |  |  |
| **Balance of Plans on March 31, 2026** | **Balance of Plans on March 31, 2026** |  |  |  | 196955 | Global Actions (7) |  | 276602 | Global Actions (7) |  |  |
| **Balance of Plans on March 31, 2026** | **Balance of Plans on March 31, 2026** |  |  |  | 1076431 | Global Stock Options (7) |  | 1060314 | Global Stock Options (7) |  |  |

---

(1) Target of the plan in Reais, paid in SANB11 shares according to the achievement of the plan's performance indicators at the end of the vesting period, based on the price of the last 50 trading days of the month immediately preceding the payment. We had a write-off during the period due to the payment of 15,434 shares.<br>(2) Target of the plan in Reais, paid in SANB11 shares according to the achievement of the plan's performance indicators at the end of the vesting period, based on the price of the last 50 trading days of the month immediately preceding the payment. We had a write-off during the period due to the payment of 11,624 shares.<br>(3) Target of the plan in Reais, paid in SANB11 shares according to the achievement of the plan's performance indicators at the end of the vesting period, based on the price of the last 50 trading days of the month immediately preceding the payment. We had a write-off during the period due to the payment of 22,099 shares.

------

<br>(4) Long-Term Incentive Plans completed, with 100% of the shares paid.<br>(5) Adjustment of the plan balance considering the partial write-off due to loss of entitlement.<br>(6) Long-Term Incentive Plans granted throughout the period.<br>(7) Target of the plan in Global stocks and options, to be paid in cash at the end of the vesting period, as the plan's performance indicators are met.<br>(8) Write-off of 545 shares and 881 global share options due to loss of rights.<br>(9) Plan completed with final achievement of 75%. Delivery of 31,844 gross shares in the period, according to criteria established in the plan contract. And write-off of 18,575 shares due to loss of rights.

**Global ILP (Long-Term Incentive) Plans**

Currently, we have active global plans launched between 2019 and 2025, targeting global stocks and options, whose design includes:

• Clear definition of performance metrics (financial and non-financial);

• Multi-year deferral, ensuring focus on sustainable results;

• Settlement in assets or financial equivalents, in accordance with malus and clawback rules.

This structure aligns with international best practices in compensation governance, reinforcing transparency and capital discipline.

**Pricing Model**

The measurement of the plans is based on the Local Volatility (Dupire) model, adjusted to incorporate uncertainties in dividends, offering greater accuracy in the fair value estimate. The main parameters considered include:

• Weighted average share price;

• Exercise price;

• Implied and expected volatility;

• Risk-free interest rate;

• Dividend projection.

The options have expiration dates up to 2033, and the exercise price corresponds to the market value on the exercise date, conditional upon achieving the established targets.

**Local ILP Plans (Long-Term Incentive)**

Local long-term incentive plans may be granted in accordance with the strategy of new companies in the group or specific businesses, generally with a vesting period of 3 (three) years.

Each plan has a specific contract, and its calculation and payment must be approved by the established governance body, observing local and global regulatory resolutions.

Each participant's reference value will be converted into SANB11 shares, typically based on the price of the last 30 trading sessions of the month immediately preceding the plan payment.

At the end of the vesting period, payment, whether of the resulting shares in the case of local plans or of the value equivalent to the shares/options in the case of global plans, is made with a restriction of 1 (one) year, and this payment is still subject to the application of Malus/Clawback clauses, which may reduce or cancel the shares to be delivered in cases of non-compliance with internal rules and exposure to excessive risks, or in cases of material failure to comply with the requirements for financial reporting, in accordance with Section 10D of the Exchange Act (SEC), applicable to companies with shares listed on the NYSE.

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**a.1)Impact on the Result**

The impacts on the result are recognized linearly during the vesting period under Personnel Expenses, as follows:

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| | | | |
|:---|:---|:---|:---|
| | | **Consolidated** | **Consolidated** |
| | | **01/01 to**<br>**03/31/2026** | 01/01 to<br>03/31/2025 |
| **Program** | **Type of Liquidation** |  |  |
| Local | Santander Shares (Brazil) | 5294 | 1709 |
| Global | Global Stocks and Options | 938 | 1677 |

---

**a.2) Variable Remuneration Referenced to Shares**

The long-term incentive plan (Deferral) determines the requirements for payment of future deferred installments of variable remuneration, considering the sustainable long-term financial bases, including the possibility of applying reductions or cancellations based on the risks assumed and fluctuations in the cost of capital.

Banco Santander's share-linked variable compensation plan is divided into 2 (two) programs: (i) Identified Group, which includes members of the Executive Committee, Statutory Directors, and other executives who assume significant and responsible risks in the control areas; and (ii) Other Employees, with variable compensation above the minimum amount established by policy. The deferral for both groups is 50% in cash indexed to 100% of the CDI rate and 50% in instruments. The impacts on the result are accounted for under Personnel Expenses, as follows:

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| | | | | |
|:---|:---|:---|:---|:---|
| **Program** | **Participant** | **Liquidity Type** | **01/01 to** | 01/01 to |
| **Program** | **Participant** | **Liquidity Type** | **03/31/2026** | 03/31/2025 |
| Collective Identified | Members of the Executive Committee, Statutory Officers and other executives who assume significant and responsible risks of control areas | 50% in cash indexed to 100% of CDI and 50% in shares (Units SANB11) | 83943 | 102891 |
| Unidentified Collective | Other employees with variable remuneration above a minimum expected value | 50% in cash indexed to 100% of the CDI and 50% instruments | 66095 | 73394 |

---

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&nbsp;&nbsp;&nbsp;&nbsp;**15.Operating segments**

According to IFRS 8, an operating segment is a component of an entity:

(a)That operates in activities from which it may obtain income and incur expenses (including income and expenses related to operations with other components of the same entity);

(b)Whose operating results are regularly reviewed by the entity's main person responsible for operational decisions related to the allocation of resources to the segment and the evaluation of its performance; It is

(c)For which distinct financial information is available.

Based on these guidelines, the Bank has identified the following reportable operating segments:

• Commercial Bank

• Global Wholesale Bank

The Bank has two segments, the commercial segment that includes individuals and legal entities (except for global corporate clients, which are treated in the Global Wholesale Banking segment) and the Global Wholesale Banking segment, which includes Investment Banking and Markets, including treasury and equity trading departments.

The Bank operates in Brazil and abroad, through the Cayman and Luxembourg branches, with Brazilian clients and, therefore, does not have geographic segmentation.

The Income Statements and other significant data are as follows:

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| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| | | | **01/01 to**<br>**03/31/2026** | | | 01/01 to<br>03/31/2025 |
| **(Condensed) Income Statement** | **Commercial bank** | **Global Wholesale Bank** | **Total** | **Commercial bank** | **Global Wholesale Bank** | **Total** |
| **NET INCOME WITH INTEREST** | **14504836** | **1604854** | **16109690** | **13208855** | **1616876** | **14825731** |
| Income from equity instruments | 1152 | 11546 | 12698 | 3833 | 23174 | 27007 |
| Equity equivalence result | 104846 | 19897 | 124743 | 56375 | 30240 | 86615 |
| Net revenue from fees and commissions | 3672399 | 512602 | 4185001 | 3720304 | 491960 | 4212264 |
| Gains/(losses) on financial assets and liabilities and exchange rate variations (1) | (1733631) | 770893 | (962738) | (365738) | 583036 | 217298 |
| Other operating income (expenses) | (156799) | (30699) | (187498) | (163728) | (34134) | (197862) |
| **TOTAL REVENUES** | **16392803** | **2889093** | **19281896** | **16459901** | **2711152** | **19171053** |
| Personnel expenses | (2573442) | (308434) | (2881876) | (2727688) | (284667) | (3012355) |
| Other administrative expenses | (2168878) | (279306) | (2448184) | (1982076) | (250674) | (2232750) |
| Depreciation and amortization | (608077) | (55204) | (663281) | (663761) | (39574) | (703335) |
| Provisions (net) | (1252126) | (15552) | (1267678) | (1310017) | 15620 | (1294397) |
| Losses on financial assets (net) | (7177748) | (130997) | (7308745) | (7252162) | (12449) | (7264611) |
| Losses on other assets (net) | (34601) | (949) | (35550) | (91116) | (11) | (91127) |
| Other financial gains/(losses) | 33503 | - | 33503 | 47389 | - | 47389 |
| **OPERATING RESULT BEFORE TAXATION (1)** | **2611434** | **2098651** | **4710085** | **2480470** | **2139397** | **4619867** |

---

(1) Includes, at Banco Comercial, the exchange rate hedge of the dollar investment (a strategy to mitigate the tax and exchange rate variation effects of offshore investments on net income), the result of which is recorded in "Gains (losses) on financial assets and liabilities" and fully offset in the Taxes line.

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| | **03/31/2026** | **03/31/2026** | **03/31/2026** | 12/31/2025 | 12/31/2025 | 12/31/2025 |
|<br>**Other aggregates:** | **Commercial Banking** | **Global Wholesale<br>Banking** | **Total** | **Commercial Banking** | **Global Wholesale<br>Banking** | **Total** |
| **Total assets** | **1284559756** | **9305082** | **1293864838** | **1180389914** | **89639551** | **1270029465** |
| Loans and advances to customers | 480962437 | 75900800 | 556863237 | 484676332 | 79872224 | 564548556 |
| Customer deposits | 476221366 | 122625815 | 598847181 | 475642024 | 117686772 | 593328796 |

---

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&nbsp;&nbsp;&nbsp;&nbsp;**16.Related party transactions**

The Bank's related parties include, in addition to its controlled, affiliated and jointly controlled companies, the key personnel of the Bank's Management and entities over which such key personnel may exercise significant influence or control.

Santander has a Related Party Transactions Policy approved by the Board of Directors, which aims to ensure that all transactions specified in the policy are carried out with the interests of Banco Santander and its shareholders in mind. The policy defines powers for approval of certain transactions by the Board of Directors. The established rules are also applied to all employees and administrators of Banco Santander and its subsidiaries.

Operations and remuneration for services with related parties are carried out in the normal course of business and under commutative conditions, including interest rates, terms and guarantees, and do not involve greater than normal collection risks or present other disadvantages.

**a)Compensation**

For the period from January to December 2025, the amount proposed by management as global compensation for administrators (Board of Directors and Executive Board) is up to R$600,000,000 (six hundred million reais), covering fixed, variable and share-based compensation. The proposal was the subject of deliberation at the Annual General Meeting (AGM) held on April 25, 2025

**i)Short and long-term benefits**

The Bank, like Banco Santander Spain and other subsidiaries within the Santander Group, has long-term remuneration programs linked to the market price performance of its shares, based on the achievement of targets.

The following table shows the Salaries and Fees of the Board of Directors and Executive Board:

---

| | | |
|:---|:---|:---|
| | **01/01 to** | 01/01 to |
| | **03/31/2026** | 03/31/2025 |
| Fixed Compensation | 31397 | 33847 |
| Variable Compensation - in cash | 59845 | 51585 |
| Variable Compensation - in shares | 52198 | 44482 |
| Others | 25973 | 28853 |
| **Total Short-Term Benefits** | **169413** | **158767** |
| Variable Compensation - in cash | 106685 | 85349 |
| Variable Compensation - in shares | 81401 | 76142 |
| **Total Long-Term Benefits** | **188086** | **161491** |
| **Total** | **357499** | **320258** |

---

Additionally, in the period ending March 31, 2026, charges were collected on management remuneration in the amount of R$11,252 (March 31, 2025 - R$10,613).

**ii)Agreement termination** 

The termination of the employment relationship with administrators, in the event of non-compliance with obligations or by the contractor's own will, does not entitle them to any financial compensation and their benefits may be discontinued.

**b)Credit Operations**

The Bank and its subsidiaries may carry out transactions with related parties, in line with current legislation regarding articles 6 and 7 of CMN Resolution No. 4,693/18, article 34 of the "Corporations Law" and Santander's Policy for Transactions with Related Parties, published on the Investor Relations website, that is, carried out at values, terms and average rates usual in the market, in force on the respective dates, and under commutativity conditions, with the following being considered related parties:

(1) its controllers, natural or legal persons, under the terms of art. 116 of the Corporations Law;

(2) its directors and members of statutory or contractual bodies;

(3) in relation to the persons mentioned in items (i) and (ii), their spouse, partner and relatives, by blood or marriage, up to the second degree;

(4) natural persons with qualified equity interest in its capital;

(5) legal entities in whose capital, directly or indirectly, a Santander Financial Institution has a qualified equity interest;

------

(6) legal entities in which a Santander Financial Institution has effective operational control or preponderance in deliberations, regardless of the equity interest; and

(7) legal entities that have a director or member of the Board of Directors in common with a Santander Financial Institution.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**c) Shareholding**

The following table shows the direct shareholding (common and preferred shares) on March 31, 2026 and December 31, 2025:

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|<br>**Shareholder** |<br>**Ordinary Shares** |<br>**Ordinary Shares (%)** |<br>**Preferred Shares** |<br>**Preferred Shares (%)** |<br>**Total Shares** | **Shares in Thousands**<br>**03/31/2026**<br>**Total Shares (%)** |
| Sterrebeeck B.V. (1) | 1809583 | 47.4% | 1733644 | 47.1% | 3543227 | 47.3% |
| Grupo Empresarial Santander, S.L. (GES) (1) | 1627891 | 42.6% | 1539863 | 41.9% | 3167755 | 42.3% |
| Banco Santander, S.A. (1) | 2696 | 0.1% | - | 0% | 2696 | 0% |
| Directors (\*) | 3836 | 0.1% | 3836 | 0.1% | 7672 | 0.1% |
| Others | 369138 | 9.7% | 396943 | 10.8% | 766081 | 10.2% |
| **Total in Circulation** | **3813144** | **99.9%** | **3674286** | **99.9%** | **7487431** | **99.9%** |
| Treasury Shares | 5550 | 0.2% | 5550 | 0.2% | 11100 | 0.2% |
| **Total** | **3818694** | **100.0%** | **3679836** | **100.0%** | **7498531** | **100.0%** |
| Free Float (2) | 369138 | 9.7% | 396943 | 10.8% | 766081 | 10.2% |
|  |  |  |  |  |  | **Shares in Thousands** |
|  |  |  |  |  |  | 12/31/2025 |
| **Shareholder** | **Ordinary Shares** | **Ordinary Shares (%)** | **Preferred Shares** | **Preferred Shares (%)** | **Total Shares** | **Total Shares (%)** |
| Sterrebeeck B.V. (1) | 1809583 | 47.4% | 1733644 | 47.1% | 3543227 | 47.3% |
| Grupo Empresarial Santander, S.L. (GES) (1) | 1627891 | 42.6% | 1539863 | 41.9% | 3167755 | 42.2% |
| Banco Santander, S.A. (1) | 2696 | 0.1% | - | 0.0% | 2696 | 0.0% |
| Directors (\*) | 3083 | 0.1% | 3083 | 0.1% | 6167 | 0.1% |
| Others | 361775 | 9.5% | 389579 | 10.6% | 751354 | 10.0% |
| **Total in Circulation** | **3805028** | **99.6%** | **3666169** | **99.6%** | **7471199** | **99.6%** |
| Treasury Shares | 13666 | 0.4% | 13666 | 0.4% | 27332 | 0.4% |
| **Total** | **3818694** | **100.0%** | **3679837** | **100.0%** | **7498531** | **100.0%** |
| "Free Float" (2) | 361775 | 9.5% | 389579 | 10.6% | 751354 | 10.0% |

---

(1)Companies of the Santander Spain Group.

(2)Composed of Employees and Others.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(\*) None of the members of the Board of Directors and Executive Board holds 1.0% or more of any class of shares.

------

**d)Transactions with related parties**

The following table presents the transactions that occurred between the companies in the group:

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| | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| | **Parent (1)** | **Parent (1)** | **Joint-controlled companies and Other Related Party (2)** | **Joint-controlled companies and Other Related Party (2)** | **Key Management Personnel (3)** | **Key Management Personnel (3)** | **Total** | **Total** |
| | **03/31/2026** | 12/31/2025 | **03/31/2026** | 12/31/2025 | **03/31/2026** | 12/31/2025 | **03/31/2026** | 12/31/2025 |
| **Assets** | **17825913** | **14794190** | **28641494** | **29515608** | **152177** | **129098** | **46619584** | **44438896** |
| Derivatives Measured At Fair Value Through Profit Or Loss, Net | 1610342 | 3927271 | - | - | 12533 | 6711 | 1622875 | 3933982 |
| Debt Instruments | - | - | - | - | - | - | - | - |
| Loans and other amounts with credit institutions - Availability and Applications in Foreign Currency (Overnight Applications) | 15784926 | 10865422 | 165366 | 156837 | - | - | 15950292 | 11022259 |
| Loans and other values with customers | - | - | 27859775 | 28767276 | 113257 | 94320 | 27973032 | 28861596 |
| Other Assets | 430645 | 1497 | 616353 | 591495 | - | - | 1046998 | 592992 |
| Warranties and Limits | - | - | - | - | 26387 | 28067 | 26387 | 28067 |
| **Liabilities** | **(4029513)** | **(3932658)** | **(11794406)** | **(12442585)** | **(319877)** | **187483** | **(16143796)** | **(16187760)** |
| Deposits from credit institutions | (3909941) | (3909005) | (1040208) | (750775) | - | - | (4950149) | (4659780) |
| Securities | - | - | - | - | - | - | - | - |
| Customer deposits | - | - | (2691942) | (2623152) | (66206) | (72459) | (2758148) | (2695611) |
| Other Liabilities - Dividends and Interest on Capital Payable | - | (181) | (7203361) | (8276298) | - | - | (7203361) | (8276479) |
| Other Liabilities | (119572) | (23472) | (858895) | (792360) | (253671) | 259942 | (1232138) | (555890) |
|  | **01/01 to<br>01/31/2026** | 01/01 to<br>03/31/2025 | **01/01 to<br>01/31/2026** | 01/01 to<br>03/31/2025 | **01/01 to<br>01/31/2026** | 01/01 to<br>03/31/2025 | **01/01 to<br>01/31/2026** | 01/01 to<br>03/31/2025 |
| **Income** | **877145** | **1965505** | **(1333456)** | **146946** | **(665472)** | **(385046)** | **(1121783)** | **1727404** |
| Interest and similar income - Loans and amounts due from credit institutions | 29332 | 77754 | - | 51066 | 794 | - | 30126 | 128820 |
| Warranties and Limits | - | - | - | - | 2 | 6 | 2 | 6 |
| Interest expense and similar charges | (26849) | (13056) | (1284194) | (62832) | (666274) | (385251) | (1977317) | (461139) |
| Fee and commission income (expense) | (9954) | (214) | 355199 | 312870 | - | 198 | 345245 | 312854 |
| Gains (losses) on financial assets and liabilities and exchange differences (net) | 977405 | 1949294 | - | (172) | 6 | - | 977411 | 1949122 |
| Other operating income (expenses) | - | - | 23118 | 26280 | - | - | 23118 | 26280 |
| Administrative expenses and amortization | (92789) | (48273) | (427579) | (180266) | - | - | (520368) | (228539) |
| Result on disposal of assets not classified as non-current assets held for sale |  |  |  |  |  |  |  |  |
| Debt Instruments Eligible for Capital |  |  |  |  |  |  |  |  |
| Other administrative expenses - Expenses with Donations |  |  |  |  |  |  |  |  |

---

(1) Controller - Banco Santander is indirectly controlled by Banco Santander Spain (Note 1), through the subsidiaries GES and Sterrebeeck B.V.

(2) Companies listed in note 5.

(3) Refers to the registration in clearing accounts of Guarantees and Limits for credit operations with Key Management Personnel.

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&nbsp;&nbsp;&nbsp;&nbsp;**17.Value of financial assets and liabilities**

According to IFRS 13, the measurement of fair value using a fair value hierarchy that reflects the model used in the measurement process must be in accordance with the following hierarchical levels:

**Level 1:** determined based on public price quotations (unadjusted) in active markets for identical assets and liabilities, including public debt securities, shares, listed derivatives.

**Level 2:** derived from data other than quoted prices included in Level 1 that are observable for the asset or liability, directly (as prices) or indirectly (derived from prices).

**Level 3:** are derived from valuation techniques that include data for assets or liabilities that are not based on observable market variables (unobservable data).&nbsp;&nbsp;&nbsp;&nbsp;

**Financial Assets and Liabilities measured at fair value in profit or loss or through Other Comprehensive Income**

**Level 1:** highly liquid bonds and securities with observable prices in an active market are classified at level 1. Most Brazilian Government Securities were classified at this level (mainly LTN, LFT, NTN-B and NTN-F), shares on the stock exchange and other securities traded on the active market.

**Level 2:** when price quotations cannot be observed, Management, using its own internal models, makes its best estimate of the price that would be set by the market. These models use data based on observable market parameters as an important reference. The best evidence of the fair value of a financial instrument at initial recognition is the transaction price, unless the fair value of the instrument can be obtained from other market transactions carried out with the same or similar instruments or can be measured using a valuation technique in which the variables used include only observable market data, mainly interest rates. These bonds and securities are classified at level 2 of the fair value hierarchy and are mainly composed of Public Securities (repo, LCI Cancellable and NTN) in a less liquid market than those classified at that level.

**Level 3:** when there is information that is not based on observable market data, Banco Santander uses models developed internally, aiming to adequately measure the fair value of these instruments. At level 3, instruments with low liquidity are classified mainly.

**Derivatives**

**Level 1:** derivatives traded on stock exchanges are classified at level 1 of the hierarchy.

**Level 2:** for Derivatives traded over the counter, for the evaluation of financial instruments (basically swaps and options), observable market data is normally used, such as exchange rates, interest rates, volatility, correlation between indices and market liquidity.

When pricing the financial instruments mentioned, the Black-Scholes model methodology is used (exchange rate options, interest rate index options, caps and floors) and the present value method (discounting future values using curves market).

**Level 3:** derivatives that are not traded on an exchange and that do not have observable information in an active market were classified as level 3, and are composed of exotic Derivatives.

The following table shows a summary of the fair values of financial assets and liabilities in the period ended March 31, 2026 and December 31, 2025, classified based on the various measurement methods adopted by the Bank to determine their fair value.

---

| | | | | |
|:---|:---|:---|:---|:---|
| |<br>**<br>Level 1** |<br>**Level 2** |<br>**Level 3** | **03/31/2026**<br>**Total** |
| **Financial Assets Measured At Fair Value Through Profit Or Loss** | **70230399** | **202033394** | **3938325** | **276202118** |
| Debt instruments | 65029194 | 18680029 | 2050231 | 85759454 |
| Equity instruments | 5201205 | - | 182795 | 5384000 |
| Derivatives | - | 56912771 | 794064 | 57706835 |
| Loans and advance to customers | - | 4901841 | 911235 | 5813076 |
| Balances with The Brazilian Central Bank | - | 121538753 | - | 121538753 |
| **Financial Assets Measured At Fair Value Through Other Comprehensive Income** | **54838048** | **-** | **3789798** | **58627846** |
| Debt instruments | 54838028 | - | 3787677 | 58625705 |
| Equity instruments | 20 | - | 2121 | 2141 |
| **Derivatives Used as Hedge Accounting (Asset)** | **-** | **41989** | **-** | **41989** |

---

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---

| | | | | |
|:---|:---|:---|:---|:---|
| **Financial Liabilities Measured At Fair Value Through Profit Or Loss** | **-** | **112688041** | **1520170** | **114208211** |
| Trading derivatives | - | 51711097 | 1520170 | 53231267 |
| Short positions |  | 60327958 |  | 60327958 |
| Debt liabilities |  | 648986 |  | 648986 |
| **Derivatives Used as Hedge Accounting (Liability)** | **—** | **24960** | **—** | **24960** |
|  |  |  |  | 12/31/2025 |
|  | **<br>Level 1** | **Level 2** | **Level 3** | **Total** |
| **Financial Assets Measured At Fair Value Through Profit Or Loss** | **84368028** | **174725164** | **3313957** | **262407149** |
| Debt instruments | 79505635 | 14889571 | 1150820 | 95546026 |
| Equity instruments | 4862393 | - | - | 4862393 |
| Derivatives | - | 64266589 | 1323617 | 65590206 |
| Loans and advance to customers | - | 5574067 | 839520 | 6413587 |
| Balances with The Brazilian Central Bank | - | 89994937 | - | 89994937 |
| **Financial Assets Measured At Fair Value Through Other Comprehensive Income** | **65444645** | **-** | **4001938** | **69446583** |
| Debt instruments | 65444625 | - | 3909595 | 69354220 |
| Equity instruments | 20 | - | 92343 | 92363 |
| **Derivatives Used as Hedge Accounting (Asset)** | **-** | **217492** | **-** | **217492** |
| **Financial Liabilities Measured At Fair Value Through Profit Or Loss Held For Trading** | **-** | **110545164** | **1926147** | **112471311** |
| Trading derivatives | - | 57901839 | 1926147 | 59827986 |
| Short positions | - | 49380059 | - | 49380059 |
| Other financial liabilities | - | - | - | - |
| **Derivatives Used as Hedge Accounting (Liability)** | **-** | **184005** | **-** | **184005** |

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**Level 3 Fair Value Movements**

The following tables demonstrate the movements that occurred during the periods from March 31, 2026 to 2025 for financial assets and liabilities classified as Level 3 in the fair value hierarchy:

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| | | **Gains/ losses (Realized/Not Realized)** | **Transfers in and/or Out of Level 3** | **Additions/ Low** | |
| | **Fair Value**<br>**12/31/2025** | **Gains/ losses (Realized/Not Realized)** | **Transfers in and/or Out of Level 3** | **Additions/ Low** | **Fair value**<br>**03/31/2026** |
| Financial assets measured at fair value through profit or loss | 3313957 | (105265) | 362616 | 367017 | 3938325 |
| Financial assets measured at fair value through other comprehensive income | 4001938 | (212140) | - | - | 3789798 |
| Financial liabilities measured at fair value through profit or loss held for trading | 1926147 | 22179 | (428156) | - | 1520170 |
|  | **Fair Value** | **Gains/ losses (Realized/Not Realized)** | **Transfers in and/or Out of Level 3** | **Additions/ Low** | **Fair value** |
|  | **12/31/2024** | **Gains/ losses (Realized/Not Realized)** | **Transfers in and/or Out of Level 3** | **Additions/ Low** | 03/31/2025 |
| Financial assets measured at fair value through profit or loss | 7123218 | 390292 | (2518353) | (2838227) | 2156930 |
| Financial assets measured at fair value through other comprehensive income | 3438024 | (11758) | (114168) | 47005 | 3359103 |
| Financial liabilities measured at fair value through profit or loss held for trading | 509368 | 1922299 | (1070759) | (561037) | 799871 |

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**Fair value movements linked to credit risk**

Changes in fair value attributable to changes in credit risk are determined based on changes in the prices of credit default swaps compared to similar obligations of the same obligor when such prices are observable, as these credit default swaps better reflect the market's assessment of the credit risks for a specific financial asset. When such prices are not observable, changes in fair value attributable to changes in credit risk are determined as the total amount of changes in fair value not attributable to changes in the basic interest rate or other observed market rates. In the absence of specific observable data, this approach provides a reasonable approximation of the changes attributable to credit risk, as it estimates the margin change above the reference value that the market may require for the financial asset.

**Financial assets and liabilities not measured at fair value**

The Bank's financial assets are measured at fair value in the consolidated balance sheet, except financial assets measured at amortized cost.

In the same sense, the Bank's financial liabilities - except financial liabilities for trading and those measured at fair value - are valued at

amortized cost in the consolidated balance sheet.

**i) Financial assets measured at other than fair value**

Below we present a comparison between the carrying amounts of the Bank's financial liabilities at amortized cost measured at an amount other than fair value and their respective fair values on March 31, 2026 and December 31, 2025:<br>

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Assets** |<br>**Accounting Value** |<br>**Fair Value** |<br>**Level 1** |<br>**Level 2** | **03/31/2026**<br>**Level 3** |
| Open Market Applications | 25247371 | 25247371 | 25247371 | - | - |
| **Financial assets at amortized cost:** |  |  |  |  |  |
| Loans and amounts due from credit institutions | 43445545 | 43542847 | - | 23443829 | 20099018 |
| Loans and advances to customers | 551050161 | 549564461 | - | - | 549564461 |
| Financial assets measured at amortized cost - Debt instruments | 125511043 | 125343808 | 63813889 | 93 | 61529826 |
| Balances with The Brazilian Central Bank | 92829562 | 92829562 | - | 92829562 | - |
| **Total** | **838083682** | **836528049** | **89061260** | **116273484** | **631193305** |
|  |  |  |  |  | 12/31/2025 |
| **Assets** | **Accounting Value** | **Fair Value** | **Level 1** | **Level 2** | **Level 3** |
| Open Market Applications | 20232729 | 20232729 | 20232729 | - | - |
| **Financial assets at amortized cost:** |  |  |  |  |  |
| Loans and amounts due from credit institutions | 35947923 | 35947923 | - | 20311427 | 15636496 |
| Loans and advances to customers | 558134969 | 558401338 | - | - | 558401338 |
| Financial assets measured at amortized cost - Debt instruments | 114708615 | 114803683 | 53703410 | 2426 | 61097847 |
| Balances with The Brazilian Central Bank | 91754315 | 91754315 | - | 91754315 | - |
| **Total** | **820778551** | **821139988** | **73936139** | **112068168** | **635135681** |

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**ii) Financial liabilities measured at other than fair value**

Below we present a comparison between the carrying values of the Bank's financial liabilities measured at a value other than fair value and their respective fair values on March 31, 2026 and December 31, 2025:

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| | | | | | **03/31/2026** |
| **Liabilities** | **Accounting Value** | **Fair Value** | **Level 1** | **Level 2** | **Level 3** |
| **Financial Liabilities at Measured Amortized Cost:** | | | | | |
| Deposits of Brazil's Central Bank and deposits of credit institutions | 150159591 | 150159591 | - | 22635515 | 127524076 |
| Customer deposits | 598847181 | 598847181 |  | 81935127 | 516912054 |
| Marketable debt securities | 159679782 | 156938164 |  |  | 156938164 |
| Debt instruments eligible capital | 29338672 | 29338672 |  |  | 29338672 |
| Other financial liabilities | 76750180 | 76750180 |  |  | 76750180 |
| **Total** | **1014775406** | **1012033788** | **—** | **104570642** | **907463146** |

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| | | | | | 12/31/2025 |
| **Liabilities** | **Accounting Value** | **Fair Value** | **Level 1** | **Level 2** | **Level 3** |
| **Financial Liabilities at Measured Amortized Cost:** |  |  |  |  |  |
| Deposits of Brazil's Central Bank and deposits of credit institutions | 146867521 | 146867521 | - | 25279956 | 121587565 |
| Customer deposits | 593328796 | 593328796 |  | 76561726 | 516767070 |
| Marketable debt securities | 156662290 | 159163562 |  |  | 159163562 |
| Debt instruments eligible capital | 28113937 | 28113937 |  |  | 28113937 |
| Other financial liabilities | 67414002 | 67414002 |  |  | 67414002 |
| **Total** | **992386546** | **994887818** | **—** | **101841682** | **893046136** |

---

The methods and assumptions used to estimate fair value are defined below:

**Loans and other amounts with credit institutions and customers –** The fair value is estimated by groups of similar credit operations. The fair value of the loans was determined by discounting the cash flows using the interest rates of the new contracts. That is, the future cash flow of the current credit portfolio is estimated based on contractual rates, and then spreads based on new loans are incorporated into the risk-free yield curve in order to calculate the value fairness of the credit portfolio. In terms of behavioral hypotheses, it is important to highlight that the prepayment rate is applied to the credit portfolio.

**Deposits from the Central Bank of Brazil and deposits from credit institutions and customers –** The fair value of deposits was calculated by discounting the difference between cash flows under contractual conditions and the rates currently practiced in the market for instruments with similar maturities. The fair value of variable rate term deposits was considered to be close to their book value.

**Obligations for bonds and securities –** The fair values of these items were estimated by calculating discounted cash flow using interest rates offered in the market for obligations with similar terms and maturities.

**Debt Instruments Eligible for Capital –** refer to the transaction fully agreed with a related party, in the context of the Capital Optimization Plan, whose book value is similar to the fair value.

**Other financial liabilities –** according to the explanatory note, substantially include amounts to be transferred arising from credit card operations, transactions pending settlement and dividends and interest on equity payable, whose book value is similar to its fair value.

The evaluation techniques used to estimate each level are defined in **Note 1.c.3.1.i.**

------

&nbsp;&nbsp;&nbsp;&nbsp;**18.Other disclosures**

&nbsp;&nbsp;&nbsp;&nbsp;**a)Derivative Financial Instruments**

The main risk factors of the Derivative instruments assumed are related to exchange rates, interest rates and variable income. In managing this and other market risk factors, practices are used that include measuring and monitoring the use of limits previously defined in internal committees, the value at risk of portfolios, sensitivities to fluctuations in interest rates, exposure exchange rate, liquidity gaps, among other practices that allow the control and monitoring of risks, which can affect Banco Santander's positions in the various markets where it operates. Based on this management model, the Bank has managed, with the use of operations involving Derivative instruments, to optimize the risk-benefit relationship even in situations of great volatility.

The fair value of Derivatives financial instruments is determined through market price quotations. The fair value of swaps is determined using discounted cash flow modeling techniques, reflecting appropriate risk factors. The fair value of forward and futures contracts is also determined based on market price quotations for exchange-traded Derivatives or using methodologies similar to those described for swaps. The fair value of options is determined based on mathematical models, such as Black & Scholes, implied volatilities and the fair value of the corresponding asset. Current market prices are used to price volatilities. For Derivatives that do not have prices directly published by exchanges, the fair price is obtained through pricing models that use market information, inferred from published prices of more liquid assets. From these prices, interest curves and market volatilities are extracted, which serve as input data for the models.

**I) Summary of Derivative Financial Instruments**

Below, composition of the portfolio of Derivative Financial Instruments (Assets and Liabilities) by type of instrument, demonstrated by its market value:

---

| | | | | |
|:---|:---|:---|:---|:---|
| | **03/31/2026** | **03/31/2026** | 12/31/2025 | 12/31/2025 |
| | **Assets** | **Liabilities** | **Assets** | **Liabilities** |
| Swap Differentials Receivable | 11442318 | 12159550 | 11595591 | 11893221 |
| Option Premiums to Exercise | 5582840 | 5187497 | 6312487 | 5970844 |
| Forward Contracts and Other | 40723666 | 35909180 | 47899620 | 42147926 |
| **Total** | **57748824** | **53256227** | **65807698** | **60011991** |

---

**II) Derivative Financial Instruments Registered in Clearing and Equity Accounts**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| | | | **03/31/2026** | | | 12/31/2025 |
|<br>**Trading** |<br>**Notional (1)** |<br>**Curve Value** | **Fair Value** |<br>**Notional (1)** |<br>**Curve Value** | **Fair Value** |
| ***Swap*** | **940807299** | **(500364)** | **(717232)** | **1091352145** | **(2221515)** | **(297630)** |
| **Asset** | **455722754** | **7126067** | **11442318** | **544480673** | **9298735** | **11595591** |
| Fees | 332145620 | 2979245 | 5126580 | 424253131 | 6039353 | 6846017 |
| Foreign Currency | 121929735 | 4146822 | 6315738 | 118489312 | 3257875 | 4746233 |
| Others | 1647399 | - | - | 1738230 | 1507 | 3341 |
| **Liabilities** | **485084545** | **(7626431)** | **(12159550)** | **546871472** | **(11520250)** | **(11893221)** |
| Fees | 444857879 | (6378736) | (10374370) | 510279375 | (10369508) | (10349447) |
| Foreign Currency | 37930114 | (1245541) | (1317473) | 35498945 | (1150742) | (1353372) |
| Others | 2296552 | (2154) | (467707) | 1093152 | - | (190402) |

---

------

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Options** | **673180948** | **(2423255)** | **395343** | **724241728** | **(2364529)** | **341643** |
| **Purchased Position** | **301300285** | **4227942** | **5582840** | **300697253** | **4436345** | **6312487** |
| Call Option - Foreign Currency | 20326469 | 2131464 | 2358433 | 20042978 | 2152833 | 2066252 |
| Put Option - Foreign Currency | 16772475 | 916827 | 1167363 | 15954554 | 855034 | 900935 |
| **Call Option - Other** | **19784687** | **832864** | **1934299** | **12400038** | **887741** | **3216466** |
| &nbsp;&nbsp;Interbank Market | 6355557 | 209824 | 446483 | 5677984 | 555307 | 2287818 |
| &nbsp;&nbsp;Interest Rate Risk Options | 13429130 | 623040 | 1487816 | 6722054 | 332434 | 928648 |
| **Put Option - Other** | **244416654** | **346787** | **122745** | **252299683** | **540737** | **128834** |
| &nbsp;&nbsp;Interbank Market | 569886 | 16105 | 11206 | 204462 | 113366 | 74030 |
| &nbsp;&nbsp;Interest Rate Risk Options | 243846768 | 330682 | 111539 | 252095221 | 427371 | 54804 |
| **Sold Position** | **371880663** | **(6651197)** | **(5187497)** | **423544475** | **(6800874)** | **(5970844)** |
| Call Option - US Dollar | 13903657 | (727141) | (776465) | 11780868 | (629651) | (430424) |
| Put Option - US Dollar | 8438802 | (560358) | (711805) | 12130582 | (637961) | (681040) |
| **Call Option - Other** | **69711566** | **(4547453)** | **(2872222)** | **90098059** | **(4452630)** | **(3443887)** |
| &nbsp;&nbsp;Interbank Market | 28053706 | (2829177) | (1814900) | 25152891 | (2505829) | (1845726) |
| &nbsp;&nbsp;Interest Rate Risk Options | 41657860 | (1718276) | (1057322) | 64945168 | (1946801) | (1598161) |
| **Put Option - Other** | **279826638** | **(816245)** | **(827005)** | **309534966** | **(1080632)** | **(1415493)** |
| &nbsp;&nbsp;Interbank Market | 1123205 | (130790) | (17450) | 2860119 | (239648) | (507171) |
| &nbsp;&nbsp;Interest Rate Risk Options | 278703433 | (685455) | (809555) | 306674847 | (840984) | (908322) |
| **Futures Contracts** | **319697026** | **-** | **-** | **567709896** | **-** | **-** |
| **Purchased Position** | **39850684** | **-** | **-** | **283663279** | **-** | **-** |
| Exchange Coupon (DDI) | 1603 | - | - | 95881997 | - | - |
| Interest Rates (DI1 and DIA) | - | - | - | 160220757 | - | - |
| Foreign Currency | 31455176 | - | - | 21182934 | - | - |
| Indexes (3) | 4888467 | - | - | 3206380 | - | - |
| *Treasury Bonds/Notes* | 3505438 | - | - | 3171211 | - | - |
| **Sold Position** | **279846342** | **-** | **-** | **284046617** | **-** | **-** |
| Exchange Coupon (DDI) | 74167215 | - | - | 95902371 | - | - |
| Interest Rates (DI1 and DIA) | 133203888 | - | - | 160220757 | - | - |
| Foreign Currency | 63723241 | - | - | 21545898 | - | - |
| Indexes (3) | 5246560 | - | - | 3206380 | - | - |
| *Treasury Bonds/Notes* | 3505438 | - | - | 3171211 | - | - |
| **Forward Contracts and Other** | **566050103** | **108062916** | **4814486** | **480123205** | **(37395965)** | **5751694** |
| **Purchased Position** | **337056509** | **115331584** | **40723666** | **221363620** | **5957072** | **47899620** |
| Currencies | 260397388 | 114258605 | 7206490 | 154265360 | 5618233 | 8490694 |
| Other | 76659121 | 1072979 | 33517176 | 67098260 | 338839 | 39408926 |
| **Sold Position** | **228993594** | **(7268668)** | **(35909180)** | **258759585** | **(43353037)** | **(42147926)** |

---

------

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| Currencies | 152945652 | (6806869) | (3358816) | 191491609 | (42844482) | (2513427) |
| Other | 76047942 | (461799) | (32550364) | 67267976 | (508555) | (39634499) |

---

(1) Nominal value of updated contracts.

(2) Includes index options, mainly options involving US Treasury, stocks and stock indices.

(3) Includes Bovespa and S&P indices.

**III) Derivatives Financial Instruments by Counterparty, Opening by Maturity and Trading Market**

---

| | | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| | | | | | | | | | | **Notional** |
| | | | | | **By Counterparty** | | | **By Maturity** | | **By Market Trading** |
| | | | | **03/31/2026** | 12/31/2025 | | | **03/31/2026** | | **03/31/2026** |
| | | **Related** | **Financial** | | | **Up to** | **From 3 to** | **Over** | **Stock exchange (2)** | **Over the counter (3)** |
| | **Customers** | **Parties** | **Institutions (1)** | **Total** | **Total** | **3 Months** | **12 Months** | **12 Months** | **Stock exchange (2)** | **Over the counter (3)** |
| *Swap* | 237975128 | 393811137 | 309021034 | 940807299 | 1091352145 | 52063432 | 128260420 | 760483447 | 95165891 | 845641408 |
| Options | 69909746 | 11874277 | 591396925 | 673180948 | 724241728 | 167226724 | 409118129 | 96836095 | 540121475 | 133059473 |
| Futures Contracts | 9763958 | 407113 | 309525955 | 319697026 | 567709896 | 90157673 | 89430187 | 140109166 | 318751023 | 946003 |
| Forward Contracts and Other | 110411261 | 359081643 | 96557199 | 566050103 | 480123205 | 314515261 | 161637393 | 89897449 | 38249531 | 527800572 |

---

(1) Includes operations that have as counterparty B3 S.A. - Brasil, Bolsa, Balcão (B3) and other stock and commodity exchanges.

(2) Includes values traded on B3.

(3) It consists of operations that are included in registration chambers, in accordance with Bacen regulations.

**IV) Accounting Hedge**

The Bank, in the normal course of its operations, is exposed to market risks that generate accounting asymmetries or volatility in its accounting results. To eliminate these asymmetries or reduce volatility, the Bank uses Derivative financial instrument contracts (Swap and Futures) that are designated as fair value or cash flow Hedge Accounting structures.

**IV.I) Fair Value Hedge** 

The Bank's fair value hedge strategy aims to protect the fair value of assets and liabilities, resulting from fluctuations in the reference interest rate (CDI, SELIC, SOFR); in currency fluctuations (Exchange Risk) and/or in price index fluctuations (IPCA, etc.). The Bank monitors each hedge structure, evaluating its effectiveness as determined by IAS 39.

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| | | | | | | **03/31/2026** |
| **Strategies** | **Book Value** | **Book Value** | **Notional** | **Notional** | **Adjustment to Fair Value** | **Adjustment to Fair Value** |
| **Fair Value Coverage** | **Objects (1)** | **Instruments (1)** | **Objects (1)** | **Instruments (1)** | **Objects (1)** | **Instruments (1)** |
| &nbsp;&nbsp;**Swap Agreements** | **1626227** | **1636104** | **1542010** | **1542010** | **84217** | **94094** |
| &nbsp;&nbsp;Hegde of Credit Operations | 1096366 | 1113023 | 1043880 | 1043880 | 52486 | 69143 |
| &nbsp;&nbsp;Hegde of Securities | 529861 | 523081 | 498130 | 498130 | 31731 | 24951 |
| &nbsp;&nbsp;**Futures Contracts** | **53612522** | **52315094** | **53128413** | **51819025** | **484109** | **496069** |
| &nbsp;&nbsp;Hegde of Credit Operations | 8230591 | 7971496 | 8051152 | 7797366 | 179439 | 174130 |
| &nbsp;&nbsp;Hegde of Securities | 40062279 | 39566043 | 40011311 | 39521545 | 50968 | 44498 |
| &nbsp;&nbsp;Funding Hedge | 5319652 | 4777555 | 5065950 | 4500114 | 253702 | 277441 |

---

------

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| | | | | | | 12/31/2025 |
| **Strategies** | **Book Value** | **Book Value** | **Notional** | **Notional** | **Adjustment to Fair Value** | **Adjustment to Fair Value** |
| **Fair Value Coverage** | **Objects (1)** | **Instruments (1)** | **Objects (1)** | **Instruments (1)** | **Objects (1)** | **Instruments (1)** |
| &nbsp;&nbsp;**Swap Agreements** | **1772953** | **1772396** | **1664551** | **1664551** | **108402** | **107845** |
| &nbsp;&nbsp;Hegde of Credit Operations | 1206323 | 1208934 | 1166421 | 1166421 | 39902 | 42513 |
| &nbsp;&nbsp;Hegde of Securities | 566630 | 563462 | 498130 | 498130 | 68500 | 65332 |
| &nbsp;&nbsp;**Futures Contracts** | **62479883** | **58971531** | **61963365** | **58383294** | **516518** | **588237** |
| &nbsp;&nbsp;Hegde of Credit Operations | 1734576 | 1580811 | 1565217 | 1384510 | 169359 | 196301 |
| &nbsp;&nbsp;Hegde of Securities | 55187708 | 52690842 | 55116924 | 52602490 | 70784 | 88352 |
| &nbsp;&nbsp;Funding Hedge | 5557599 | 4699878 | 5281224 | 4396294 | 276375 | 303584 |

---

(1) Credit values refer to active operations and debit operations to passive operations.

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| | | | | **03/31/2026** | 12/31/2025 |
| | **Up to** | **From 3 to** | **Above** | | |
| **Strategies** | **3 Month** | **12 Months** | **12 Months** | **Total** | **Total** |
| **Fair Value Hedge** |  |  |  |  |  |
| &nbsp;&nbsp;**Swap Contracts** | **1043880** | **-** | **498130** | **1542010** | **1664551** |
| &nbsp;&nbsp;Credit Operations Hedge | 1043880 | - | - | 1043880 | 1166421 |
| &nbsp;&nbsp;Hegde of Securities | - | - | 498130 | 498130 | 498130 |
| &nbsp;&nbsp;**Futures Contracts** | **3649227** | **19800294** | **28369504** | **51819025** | **58383294** |
| &nbsp;&nbsp;Credit Operations Hedge | 1219317 | 5974633 | 603416 | 7797366 | 1384510 |
| &nbsp;&nbsp;Hegde of Securities | 2429910 | 12494519 | 24597116 | 39521545 | 52602490 |
| &nbsp;&nbsp;Hedge of Funding | - | 1331142 | 3168972 | 4500114 | 4396294 |

---

**IV.II) Cash Flow Hedge**

The Bank's cash flow hedging strategies consist of hedging exposure to changes in cash flows, interest payments and exchange rate exposure, which are attributable to changes in interest rates relating to recognized assets and liabilities and changes of exchange rates of unrecognized assets and liabilities.

In cash flow hedges, the effective portion of the change in the value of the hedging instrument is temporarily recognized in equity under the caption "Other Comprehensive Income – cash flow hedges" until the expected transactions occur, when that portion is then recognized in the consolidated statements of income, except that, if the expected transactions result in the recognition of non-financial assets or liabilities, that portion will be included in the cost of the financial asset or liability.

------

---

| | | |
|:---|:---|:---|
| | **03/31/2026** | 12/31/2025 |
| **Hedge Structure** | **Effective Portion Accumulated** | **Effective Portion Accumulated** |
| CDB | (80523) | (367808) |
| **Total** | **(80523)** | **(367808)** |

---

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| | | | | | | **03/31/2026** |
| **Strategies** | **Book Value** | **Book Value** | **Notional** | **Notional** | **Adjustment to Value Market** | **Adjustment to Value Market** |
| **Cash Flow Hedge** | **Objects (1)** | **Instruments (1)** | **Objects (1)** | **Instruments (1)** | **Objects (1)** | **Instruments (1)** |
| &nbsp;&nbsp;**Futures Contracts** | **65196332** | **64791084** | **65342060** | **64955400** | **(145728)** | **(164316)** |
| &nbsp;&nbsp;Hegde of Securities | 601584 | 205037 | 786660 | 400000 | (185076) | (194963) |
| &nbsp;&nbsp;Funding Hedge | 64594748 | 64586047 | 64555400 | 64555400 | 39348 | 30647 |
|  |  |  |  |  |  | 12/31/2025 |
| **Strategies** | **Book Value** | **Book Value** | **Notional** | **Notional** | **Adjustment to Value Market** | **Adjustment to Value Market** |
| **Cash Flow Hedge** | **Objects (1)** | **Instruments (1)** | **Objects (1)** | **Instruments (1)** | **Objects (1)** | **Instruments (1)** |
| &nbsp;&nbsp;**Futures Contracts** | **75691789** | **76698781** | **76258560** | **76698781** | **(566771)** | **(626619)** |
| &nbsp;&nbsp;Hegde of Securities | 5803656 | 6864200 | 6048160 | 6864200 | (244504) | (250800) |
| &nbsp;&nbsp;Funding Hedge | 69888133 | 69834581 | 70210400 | 69834581 | (322267) | (375819) |

---

(\*) The Bank has cash flow hedging strategies, the objects of which are assets in its portfolio, which is why we demonstrate the passive side of the respective instruments. For structures whose instruments are futures, we demonstrate the notional balance, recorded in a clearing account.

(1) Credit values refer to active operations and debt operations to passive operations.

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| | | | | **03/31/2026** | 12/31/2025 |
| | **Up to** | **From 3 to** | **Above** | | |
| **Strategies** | **3 Month** | **12 Months** | **12 Months** | **Total** | **Total** |
| &nbsp;&nbsp;**Futures Contracts** | **-** | **34509600** | **30445800** | **64955400** | **77325400** |
| &nbsp;&nbsp;Hegde of Securities | - | - | - | - | - |
| &nbsp;&nbsp;Securities Hedge | - | - | 400000 | 400000 | 7115000 |
| &nbsp;&nbsp;Hedge of Funding | - | 34509600 | 30045800 | 64555400 | 70210400 |

---

------

**V) Credit Derivatives Information**

Banco Santander uses credit derivatives with the aim of managing counterparty risk and meeting the demands of its customers, carrying out purchase and sale protection operations through credit default swaps and total return swaps, primarily related to securities with Brazilian sovereign risk.

**Total Return Swaps – TRS**

These are credit derivatives where the return of the reference obligation is exchanged for a cash flow and in which, upon the occurrence of a credit event, the protection buyer usually has the right to receive from the protection seller the equivalent of the difference between the updated value and fair value (market value) of the reference obligation on the contract settlement date.

**Credit Default Swaps – CDS**

These are credit derivatives where, upon the occurrence of a credit event, the protection buyer has the right to receive from the protection seller the equivalent of the difference between the face value of the CDS contract and the fair value (market value) of the reference obligation on the contract settlement date. In return, the seller receives remuneration for selling the protection.

Below, composition of the Credit Derivatives portfolio demonstrated by its reference value and effect on the calculation of Required Net Equity (PLE)

---

| | | | |
|:---|:---|:---|:---|
| | | | **Notional** |
| | | **03/31/2026** | 12/31/2025 |
| |<br>**Retained Risk - Total Rate of Return Swap** | **Transferred Risk - Credit Swap** | **Transferred Risk - Credit Swap** |
| Credit Swaps | - | 8744756 | 7950397 |
| **Total** | **-** | **8744756** | **7950397** |

---

During the period, there was no credit event related to taxable events provided for in the contracts.

---

| | | | | |
|:---|:---|:---|:---|:---|
| | | **03/31/2026** | | 12/31/2025 |
| **Maximum Potential for Future Payments - Gross** | **Over 12 Months** | **Total** | **Over 12 Months** | **Total** |
| Per Instrument: CDS | 8744756 | 8744756 | 7950397 | 7950397 |
| Per Risk Classification: Below Investment Grade | 8744756 | 8744756 | 7950397 | 7950397 |
| Per Reference Entity: Brazilian Government | 8744756 | 8744756 | 7950397 | 7950397 |

---

**VI) Derivative Financial Instruments - Margins Pledged as Guarantee**

The margin provided as collateral for transactions traded on B3 (the current corporate name of BM&F Bovespa) with proprietary and third-party derivative financial instruments is composed mostly of federal government bonds.

---

| | | |
|:---|:---|:---|
| | **03/31/2026** | 12/31/2025 |
| Financial Treasury Bill - LFT | 14465702 | 18735636 |
| National Treasury Bill - LTN | 15582923 | 15971113 |
| National Treasury Notes - NTN | 3026158 | 7063913 |
| **Total** | **33074783** | **41770662** |

---

------

&nbsp;&nbsp;&nbsp;&nbsp;**b)Operational Limits**

Bacen requires financial institutions to maintain a Reference Equity (PR), Level I PR and Principal Capital compatible with the risks of their activities, higher than the minimum requirement of the Required Reference Equity, represented by the sum of the credit risk, market risk and operational risk installments.

As established in CMN Resolution No. 4,958/2021, the PR requirement is 11.50%, including 8.00% of Minimum Reference Equity, plus 2.50% of Capital Conservation Additive and 1.00% of Systemic Additive. The PR Tier I is 9.50% and the Minimum Principal Capital is 8.00%. In continuity with the adoption of the rules established by CMN Resolution No. 4,955/2021, the calculation of capital ratios is calculated on a consolidated basis based on information from the Prudential Conglomerate, whose definition is established by CMN Resolution No. 4,950/2021. The absolute value of the negative adjustment recorded in equity, resulting from the application, on January 1, 2025, of the criteria for establishing a provision for expected losses provided for in CMN Resolution No. 4,966, should impact capital in a phased manner, following the instructions and calendar of CMN Resolution No. 5,199.

---

| | | |
|:---|:---|:---|
| | **03/31/2026** | 12/31/2025 |
| Level I Reference Assets | 93734.1 | 94548.4 |
| Main Capital | 85917.9 | 86426.5 |
| Additional Capital | 7816.2 | 8121.9 |
| Level II Reference Equity | 22045.3 | 20521.2 |
| **Reference Heritage (Level I and II)** | **115779.4** | **115069.5** |
| Credit Risk (1) | 627072.0 | 627239.5 |
| Market Risk (2) | 44227.3 | 45564.2 |
| Operational Risk | 92832.0 | 74911.2 |
| **Total RWA (3)** | **764131.3** | **747714.9** |
| **Basel Index Level I** | **12.27** | **12.64** |
| **Basel Core Capital Index** | **11.24** | **11.56** |
| **Basel Reference Equity Index** | **15.15** | **15.39** |

---

(1) Credit risk exposures subject to calculation of the capital requirement using a standardized approach (RWACPAD) are based on the procedures established by BCB Resolution 229, of May 12, 2022.

(2) Exposures to market risk subject to calculation of the capital requirement using a standardized approach and an approach using internal models. The standardized approach includes portions for market risk exposures subject to changes in interest rates (RWAjur1), foreign currency coupons (RWAjur2), price indices (RWAjur3), and interest rate coupons (RWAjur4), the price of commodity goods (RWAcom), the price of shares classified in the trading portfolio (RWAacs), portions for exposure of gold, foreign currency and operations subject to exchange rate variation (RWAcam), and adjustment for derivatives arising from changes in the counterparty's credit quality (RWAcva).

(3) Risk Weighted Assets or Risk-Weighted Assets.

Banco Santander publishes the Risk Management Report with information relating to risk management, a brief description of the Recovery Plan, capital management, PR and RWA. The report with greater detail on the premises, structure and methodologies can be found at the website www.santander.com.br/ri.

Financial institutions are obliged to maintain the investment of resources in Permanent Assets in accordance with the adjusted Reference Equity level. The resources invested in Permanent Assets, calculated on a consolidated basis, are limited to 50% of the value of the Reference Equity adjusted in accordance with CMN Resolution No. 4,957/2021. Banco Santander meets the established requirements.

&nbsp;&nbsp;&nbsp;&nbsp;**c)Financial instruments - Sensitivity analysis**

Risk management is focused on portfolios and risk factors, in accordance with Bacen regulations and good international practices.

Financial instruments are segregated into trading portfolios (Trading Book) and banking portfolio (Banking Book), as carried out in the management of market risk exposure, in accordance with the best market practices and the classification criteria for transactions and capital management established by the Central Bank of Brazil. The trading portfolio consists of all transactions with financial instruments and commodities, including Derivatives, held with the intention of trading. The banking portfolio consists of structural operations arising from Banco Santander's various business lines and their possible hedges. Therefore, according to the nature of Banco Santander's activities, the sensitivity analysis was divided between the trading and banking portfolios.

Banco Santander carries out sensitivity analysis of financial instruments in accordance with CVM Instruction No. 2/2020, considering market information and scenarios that would negatively affect the Bank's positions.

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The summary tables presented below summarize sensitivity values generated by Banco Santander's corporate systems, referring to the trading portfolio and banking portfolio, for each of the portfolio scenarios on March 31, 2026.

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| | | | | |
|:---|:---|:---|:---|:---|
| **Trading Portfolio**<br>**Risk Factor** |<br>**Description** |<br>**Scenario 1** |<br>**Scenario 2** | **Consolidated**<br>**Scenario 3** |
| Interest Rate - Real | Exposures subject to variation in fixed interest rates | (6798) | (238562) | (477124) |
| Coupon Interest Rate | Exposures subject to variation in interest rate coupon rates | (46) | (226) | (453) |
| Inflation | Exposures subject to variation in price index coupon rates | (14057) | (44287) | (88573) |
| Coupon - US Dollar | Exhibitions subject to variation in the dollar coupon rate | (2576) | (7191) | (14381) |
| Coupon - Other Currencies | Exposures subject to variation in foreign currency coupon rates | (414) | (3303) | (6606) |
| Foreign Currency | Exposures subject to Foreign Exchange | (122) | (3038) | (6076) |
| Eurobond/Treasury/Global | Exposures subject to variation in the interest rate of securities traded on the international market | (3074) | (28840) | (57680) |
| Shares and Indexes | Exposures subject to Change in Shares Price | (419) | (10480) | (20960) |
| Commodities | Exposures subject to Change in Commodity Price | (229) | (5728) | (11456) |
| **Total (1)** |  | **(27735)** | **(341655)** | **(683309)** |

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(1) Amounts net of tax effects.

**Scenario 1:** shock of +10bps in interest curves and 1% for price changes (currencies);

**Scenario 2:** shock of +25% and -25% in all risk factors, considering the largest losses per risk factor.

**Scenario 3:** shock of +50% and -50% in all risk factors, considering the largest losses per risk factor.

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| | | | | |
|:---|:---|:---|:---|:---|
| **Banking Portfolio** | | | | **Consolidated** |
| **Risk Factor** | **Description** | **Scenario 1** | **Scenario 2** | **Scenario 3** |
| Interest Rate - Real | Exposures subject to Changes in Interest Fixed Rate | (46661) | (1702682) | (3405773) |
| TR and Long-Term Interest Rate - (TJLP) | Exposures subject to Change in Exchange TR and TJLP | (36137) | (1363761) | (2465818) |
| Inflation | Exposures subject to Change in Coupon Rates of Price Indexes | (36147) | (640199) | (1183481) |
| Coupon - US Dollar | Exposures subject to Changes in Coupon US Dollar Rate | (3124) | (121886) | (226056) |
| Coupon - Other Currencies | Exposures subject to Changes in Coupon Foreign Currency Rate | (3300) | (32590) | (64679) |
| Interest Rate Markets International | Exposures subject to Changes in Interest Rate Negotiated Roles in International Market | (4189) | (849758) | (1784875) |
| Foreign Currency | Exposures subject to Foreign Exchange | 1774 | 44342 | 88685 |
| **Total (1)** |  | **(127784)** | **(4666534)** | **(9041997)** |

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(1) Values calculated based on the consolidated information of the institutions.

**Scenario 1:** shock of +10bps in interest curves and 1% for price changes (currencies);

**Scenario 2:** shock of +25% and -25% in all risk factors, considering the largest losses per risk factor.

**Scenario 3:** shock of +50% and -50% in all risk factors, considering the largest losses per risk factor.

&nbsp;&nbsp;&nbsp;&nbsp;**d) Funds managed and administered not recorded on the balance sheet**

The Santander Conglomerate has funds under management, in which it does not have a significant stake, does not act as "main" and does not hold shares in these Funds. Based on the contractual relationship that governs the management of such funds, the third parties who hold the shareholding are those who are exposed, or have rights, to variable returns and have the ability to affect these returns through decision-making power. Furthermore, the Bank, as manager of the funds, acts in the analysis of remuneration regimes, which are proportional to the service provided and, therefore, acts as "main".

The funds managed by the Santander Conglomerate not recorded on the balance sheet are as follows:

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| | | |
|:---|:---|:---|
| | **03/31/2026** | 12/31/2025 |
| Managed funds | 235237871 | 227012763 |
| **Total** | **235237871** | **227012763** |

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**e) Securities held by third parties in custody**

As of March 31, 2026, and December 31, 2025, the Bank held in custody debt securities and securities of third parties totaling R$133.685.104 and R$146.156.911, respectively.

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&nbsp;&nbsp;&nbsp;&nbsp;**19.Subsequent Events**

&nbsp;&nbsp;&nbsp;&nbsp;**a)Distribution of Interest on Equity**

The Board of Directors of Banco Santander, at a meeting held on April 10, 2026, approved the proposal of the Company's Executive Board, subject to ratification by the Ordinary General Meeting, for the distribution of Interest on Equity in the amount of R$2,000,000,000.00 (two billion reais), based on the balance of the Company's Dividend Equalization Reserve. Shareholders registered in the Bank's records at the end of the day on April 20, 2026 (inclusive) were entitled to the Interest on Equity. Therefore, from April 22, 2026 (inclusive), the Bank's shares were traded "Ex-Interest on Equity". The Interest on Equity will be paid starting May 7, 2026. The Interest on Equity was fully allocated to the minimum mandatory dividends distributed by the Bank for the fiscal year 2026, without any remuneration for monetary adjustment.

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**APPENDIX I – Consolidated Condensed Statement of Value Added**

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| | | | | |
|:---|:---|:---|:---|:---|
| | **01/01 to 03/31/2026** | **01/01 to 03/31/2026** | **01/01 to 03/31/2025** | **01/01 to 03/31/2025** |
| Interest and similar income | 42434402 |  | 38750552 |  |
| Fee and commission income (net) | 4185001 |  | 4212264 |  |
| Impairment losses on financial assets (net) | (7308745) |  | (7264611) |  |
| Other income and expense | (1738412) |  | (85315) |  |
| Interest expense and similar charges | (26324712) |  | (23924821) |  |
| **Third-party input** | **(2411692)** |  | **(2252678)** |  |
| &nbsp;&nbsp;Materials, energy and other | (169344) |  | (176590) |  |
| &nbsp;&nbsp;Third-party services | (1640941) |  | (1553360) |  |
| &nbsp;&nbsp;Impairment of assets | (35550) |  | (91127) |  |
| &nbsp;&nbsp;Other | (565857) |  | (431601) |  |
| **Gross added value** | **8835842** |  | **9435391** |  |
| Retention |  |  |  |  |
| &nbsp;&nbsp;Depreciation and amortization | (663281) |  | (703335) |  |
| **Added value produced** | **8172561** |  | **8732056** |  |
| Investments in affiliates and subsidiaries | 124743 |  | 86615 |  |
| **Added value to distribute** | **8297304** |  | **8818671** |  |
| **Added value distribution** |  |  |  |  |
| **Employee** | **2564185** | **30.9%** | **2665302** | **30.2%** |
| &nbsp;&nbsp;Compensation | 1850376 |  | 1898400 |  |
| &nbsp;&nbsp;Benefits | 525307 |  | 548146 |  |
| &nbsp;&nbsp;FGTS | 145786 |  | 136692 |  |
| &nbsp;&nbsp;Other | 42716 |  | 82064 |  |
| **Taxes, fees and contributions** | **2405629** | **29.0%** | **2967124** | **33.6%** |
| &nbsp;&nbsp;Federal | 2402489 |  | 2964787 |  |
| &nbsp;&nbsp;Municipal | 3140 |  | 2337 |  |
| **Compensation of third-party capital - rental** | **45940** | **0.6%** | **34662** | **0.4%** |
| **Remuneration of interest on capital** | **3281550** | **39.5%** | **3151583** | **35.7%** |
| &nbsp;&nbsp;Dividends and interest on capital | 2000000 |  | 1500000 |  |
| &nbsp;&nbsp;Profit Reinvestment | 1217994 |  | 1608800 |  |
| &nbsp;&nbsp;Profit (loss) attributable to non-controlling interests | 63556 |  | 42783 |  |
| **Total** | **8297304** | **100.0%** | **8818671** | **100.0%** |

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**Composition of Management Bodies as of March 31, 2026**

**Administrative Board**

Deborah Stern Vieitas – President (independent)

Javier Maldonado Trinchant – Vice-president

Cristiana Almeida Pipponzi – Counselor (independent)

Cristina San Jose Brosa - Counselor<br>Deborah Patricia Wright - Counselor (independent)

Ede Ilson Viani - Counselor<br>Mario Roberto Opice Leão - Counselor

Nitin Prabhu - Counselor

Pedro Augusto de Melo Counselor (independent)

Vanessa de Souza Lobato Barbosa - Counselor<br>

Antonio Carlos Quintella - Conselheiro (independente)

**Audit Committee**

Pedro Augusto de Melo – Coordinator

Luiz Carlos Nannini - Qualified Technical Member

Andrea Maria Ramos Leonel – Member

René Luiz Grande – Member

**Risk and Compliance Committee**

Antonio Carlos Quintella - Coordinator

Cristina San Jose Brosa - Member

Deborah Stern Vieitas – Member

Jaime Leôncio Singer – Member

José Mauricio Pereira Coelho - Member

**Sustainability Committee**

Cristiana Almeida Pipponzi – Coordinator

Deborah Stern Vieitas – Member

Vivianne Naigeborin - Member

Tasso Rezende de Azevedo – Member

**Nominating and Governance Committee** 

Deborah Stern Vieitas – Coordinator

Deborah Patricia Wright – Member

Cristiana Almeida Pipponzi - Member

Javier Maldonado Trinchant – Member

**Compensation Committee**

Deborah Patricia Wright – Coordinator

Deborah Stern Vieitas - Member

Luiz Fernando Sanzogo Giorgi – Member

Vanessa de Souza Lobato Barbosa - Member

**Innovation and Technology Committee**

Nitin Prabhu - Coordinator

Deborah Stern Vieitas - Member

Ede Ilson Viani - Member

Eduardo Alvarez Garrido - Member

Gilberto Duarte de Abreu Filho - Member

Guilherme Horn - Member

Mario Roberto Opice Leão - Member

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**Executive Board** 

**Chief Executive Officer&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**

Mario Roberto Opice Leão

**Executive Vice President and Investor Relations Director&nbsp;&nbsp;&nbsp;&nbsp;**

Gustavo Alejo Viviani

**Executive Vice President Directors**

**&nbsp;&nbsp;&nbsp;&nbsp;**

Alessandro Tomao

André Juaçaba de Almeida

Carlos Díaz Álvarez

Carlos Ignacio Muñiz Gonzalez Blanch

Cezar Augusto Janikian

Christian George Egan\*

Ede Ilson Viani

Germanuela de Almeida de Abreu

Gilberto Duarte de Abreu Filho

Maria Elena Lanciego Perez

**Directors without Specific Designation&nbsp;&nbsp;&nbsp;&nbsp;**

Alessandro Chagas Farias

Alexandre Guimarães Soares

Alexandre Teixeira de Araujo

Ana Paula Vitali Janes Vescovi

Camila Stolf Toledo

Carlos Aguiar Neto&nbsp;&nbsp;&nbsp;&nbsp;

Celso Mateus De Queiroz

Claudenice Lopes Duarte

Claudia Chaves Sampaio

Daniel Mendonça Pareto

Denis Ferro Junior

Eduardo Alvarez Garrido

Eduardo Luis Sasaki

Franco Luigi Fasoli

Geraldo José Rodrigues Alckmin Neto&nbsp;&nbsp;&nbsp;&nbsp;

Gustavo de Sousa Santos

Izabella Ferreira Costa Belisario

Jean Paulo Kambourakis

Leonardo Augusto de Andrade Barbosa

Leonardo Mendes Cabral

Marcelo Aleixo

Marcos Jose Maia da Silva<br>Mariana Cahen Margulies

Mauricio Caliggiuri Inforçati<br>Michele Soares Ishii

Nicolás Vergara

Pablo Agote Alique\*\*

Paulo César Ferreira de Lima Alves

Paulo Fernando Alves Lima

Paulo Sérgio Duailibi

Rafael Abujamra Kappaz

Reginaldo Antonio Ribeiro

Ricardo Olivare de Magalhães

Richard Flavio Da Silva

Robson de Souza Rezende<br>Rudolf Gschliffner

Sandro Mazerino Sobral

Thomaz Antonio Licarião Rocha &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

Vanessa Alessi Manzi

Vítor Ohtsuki

\*Ownership pending approval by the Central Bank of Brazil.

\*\*Possession pending regulatory approvals.

**Accountant** <br>

Anna Paula Dorce Armonia – CRC Nº 1SP – 198352/9

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**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: April 30&nbsp;&nbsp;&nbsp;&nbsp;, 2026

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| | |
|:---|:---|
| **Banco Santander (Brasil) S.A.** | **Banco Santander (Brasil) S.A.** |
| By: | /S/ Reginaldo Antonio Ribeiro |
|  | **Reginaldo Antonio Ribeiro<br>Officer Without Specific Designation** |

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

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