Notes and other explanatory information [abstract]

Schedule of jointly controlled and significant influence investments


	Investments
	2025	2024
Jointly Controlled by Banco Santander	534,505	644,426
Banco RCI Brasil S.A.	485,793	591,951
Estruturadora Brasileira de Projetos S.A. - EBP	428	387
Gestora de Inteligência de Crédito	48,284	52,088
Jointly Controlled by Santander Corretora de Seguros	3,492	2,307
Hyundai Corretora de Seguros	3,492	2,307
Significant Influence of Banco Santander	2,370,206	2,422,571
Núclea S.A.	314,434	306,521
Pluxee Benefícios Brasil S.A. (3)	1,933,758	2,059,643
Santander Auto S.A.	56,745	56,407
FIDC Creditórios Multisegmentos NPL Ipanema X Responsabilidade Limitada	65,269	—
Significant Influence of Santander Corretora de Seguros	608,891	570,872
Tecnologia Bancária S.A. - TECBAN (1)	250,552	248,951
CSD Central de Serviços de Registro e Depósito aos Mercados Financeiro e de Capitais S.A	47,321	41,027
BIOMAS – Serviços Ambientais, Restauração e Carbono S.A.	3,946	2,923
Webmotors S.A.	307,072	277,971
Total	3,517,094	3,640,176

(1)

Entities with a one-month lag in equity method accounting. For the recognition of equity method income, the financial position as of 12/31/2025 was utilized on 11/30/2025.

(2)

Despite holding a stake of less than 20%, the Bank exercises joint control over the entity with the other majority shareholders, through a shareholders' agreement that stipulates no business decision can be made by a single shareholder, that is, decisions require the unanimous consent of the parties sharing control.”

(3)

The balance of the transaction for the acquisition of a stake in Pluxee includes its investment in its benefits subsidiary, Pluxee Instituição de Pagamento S.A. (Current name of “Ben Benefícios e Serviços Instituição de Pagamentos S.A”) and goodwill generated by expected future profitability, as per terms described in Note 3.i.

Schedule of jointly controlled and significant influence total


			2025
	Total assets	Total liabilities	Total Income
Jointly Controlled by Banco Santander	15,623,855	15,303,124	322,033
Banco RCI Brasil S.A.	14,406,307	14,060,196	346,111
Estruturadora Brasileira de Projetos S.A. - EBP	3,889	3,876	369
Gestora de Inteligência de Crédito	1,213,660	1,239,052	(24,447)
Jointly Controlled by Santander Corretora de Seguros	3,169,143	3,184,741	(45,238)
Tecnologia Bancária S.A. - TECBAN	2,836,231	2,797,987	8,603
Hyundai Corretora de Seguros Ltda.	11,069	8,676	2,393
CSD Central de Serviços de Registro e Depósito aos Mercados Financeiro e de Capitais S.A	279,750	295,046	(15,295)
BIOMAS – Serviços Ambientais, Restauração e Carbono S.A.	42,093	83,032	(40,939)
Significant Influence of Banco Santander	11,271,921	9,932,267	1,260,785
Núclea S.A.	2,164,151	1,524,528	633,822
Pluxee Benefícios Brasil S.A.	8,419,988	7,792,935	553,985
Santander Auto S.A.	687,782	614,804	72,978
Significant Influence of Santander Corretora de Seguros	846,681	614,883	226,950
Webmotors S.A.	846,681	614,883	226,950
Total	30,911,600	29,035,015	1,764,530

			2024
	Total assets	Total liabilities	Total Income
Jointly Controlled by Banco Santander	14,064,120	13,920,211	212,081
Banco RCI Brasil S.A.	12,806,942	12,663,035	239,839
Estruturadora Brasileira de Projetos S.A. - EBP	1,784	1,783	1
Gestora de Inteligência de Crédito	1,255,393	1,255,393	(27,759)
Jointly Controlled by Santander Corretora de Seguros	3,003,077	3,034,120	(31,043)
Tecnologia Bancária S.A. - TECBAN	2,752,924	2,755,450	(2,526)
Hyundai Corretora de Seguros Ltda.	7,152	5,753	1,399
CSD Central de Serviços de Registro e Depósito aos Mercados Financeiro e de Capitais S.A	211,773	211,538	235
BIOMAS – Serviços Ambientais, Restauração e Carbono S.A.	31,228	61,379	(30,151)
Significant Influence of Banco Santander	11,442,660	10,558,737	883,923
Núclea S.A.	2,779,787	2,212,634	567,153
Santander Auto S.A.	422,852	371,276	51,576
Significant Influence of Santander Corretora de Seguros	634,889	510,446	124,443
Webmotors S.A.	634,889	510,446	124,443
Total	29,144,746	28,023,514	1,189,405

Schedule of principal jointly controlled entities


	2025	2024
	Banco RCI Brasil	Banco RCI Brasil
Assets	13,984,420	12,276,584
Liabilities	(12,767,790)	(10,782,915)
Cash and Cash Equivalents	350,232	336,955
Depreciation and amortization	(2,080)	(1,937)
Income	680,804	772,324
Interest income	2,164,109	1,891,374
Interest expenses	(1,483,305)	(1,119,050)
Income / (Expense) from Income Tax	(260,142)	(139,420)
Current Liabilities (excluding Trading, Other Liabilities, and Provisions)	(5,161,615)	(4,698,162)
Non-Current Liabilities (excluding Trading, Other Liabilities, and Provisions)	(7,606,175)	(6,084,753)