6-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549

Form 6-K

Report of Foreign Issuer

Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934

For the month of March, 2025

Commission File Number: 001-14554

Banco Santander-Chile

Santander-Chile Bank

(Translation of Registrant’s Name into English)

Bandera 140, 20th floor

Santiago, Chile

Telephone: 011-562-320-2000

(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 ☒    Form 40-F ☐

EXHIBIT INDEX

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, thereunto duly authorized.

Date: March 12, 2025

february2025

SUMMARIZED CONSOLIDATED STATEMENTS OF FINANCIAL POSITION SUMMARIZED CONSOLIDATED STATEMENTS OF INCOME FOR THE PERIOD Principal assets MCh$ Operational results MCh$ Cash and deposits in banks 2,668,433 Net interest income 327,012 Loans and accounts receivables from customers and banks, net 39,483,214 Net fee and commission income 98,385 Loans and accounts receivables from customers at fair value, net 96,804 Result from financial operations 45,636 Financial instruments 8,593,965 Total operating income 471,033 Financial derivative contracts 11,595,622 Provision for loan losses (96,581) Other asset ítems 4,861,009 Support expenses (156,356) Total assets 67,299,047 Other results (13,705) Income before tax 204,391 Principal liabilities MCh$ Income tax expense (28,679) Deposits and other demand liabilities 13,446,116 Net income for the period 175,712 Time deposits and other time liabilities 17,463,403 Issued debt and regulatory capital instruments 10,173,086 Attributable to: Financial derivative contracts 11,846,317 Equity holders of the Bank 173,363 Other liabilities ítems 9,939,710 Non-controlling interest 2,349 Total equity 4,430,415 327,012 Total liabilities and Equity 67,299,047 Equity attributable to: Equity holders of the Bank 4,324,946 Non-controlling interest 105,469 BANCO SANTANDER-CHILE AND SUBSIDIARIES CONSOLIDATED FINANCIAL INFORMATION As of February 28, 2025 The principal balances and results accumulated for the period ending February 2025 (amounts in millions of Chilean pesos). JONATHAN COVARRUBIAS H. ROMAN BLANCO R. Chief Accounting Officer Chief Executive Officer

B ESTADO DE SITUACIÓN FINANCIERA CONSOLIDADO RESUMIDO ESTADO DE RESULTADOS CONSOLIDADO DEL PERIODO RESUMIDO Principales rubros del activo MM$ Resultados operacionales MM$ Efectivo y depósitos en bancos 2.668.433 Ingresos netos por intereses y reajustes 327.012 Créditos y cuentas por cobrar a clientes y bancos 39.483.214 Ingresos netos de comisiones 98.385 Créditos y cuentas por cobrar a clientes a valor razonable 96.804 Resultado de operaciones financieras 45.636 Instrumentos financieros 8.593.965 Total ingresos operacionales 471.033 Contratos de derivados financieros 11.595.622 Gasto de pérdidas crediticias (96.581) Otros rubros del activo 4.861.009 Gastos de apoyo (156.356) Total Activos 67.299.047 Otros resultados (13.705) Resultado antes de impuesto 204.391 Principales rubros del pasivo MM$ Impuesto a la renta (28.679) Depósitos y otras obligaciones a la vista 13.446.116 Utilidad consolidada del periodo 175.712 Depósitos y otras captaciones a plazo 17.463.403 Instrumentos de deuda y capital regulatorio emitidos 10.173.086 Resultado atribuible a: Contratos de derivados financieros 11.846.317 Tenedores patrimoniales del Banco 173.363 Otros rubros del pasivo 9.939.710 Interés no controlador 2.349 Total patrimonio 4.430.415 Total Pasivos y Patrimonio 67.299.047 Patrimonio atribuible a: Tenedores patrimoniales del Banco 4.324.946 Interés no controlador 105.469 BANCO SANTANDER-CHILE Y AFILIADAS INFORMACIÓN FINANCIERA CONSOLIDADA Al 28 de Febrero de 2025 A continuación, se presentan los principales saldos de balance y resultados acumulados por el periodo de cierre de mes de Febrero de 2025 (cifras en millones de pesos). JONATHAN COVARRUBIAS H. ROMAN BLANCO R. Gerente de Contabilidad Gerente General

IMPORTANT NOTICE The unaudited financial information has been prepared in accordance with the Compendium of Accounting Standards for Banks effective from January 1, 2022 issued by the Financial Market Commission (FMC), The accounting principles issued by the FMC are substantially similar to IFRS but there are some exceptions, The FMC is the banking industry regulator according to article 2 of the General Banking Law, which by General Regulation establishes the accounting principles to be used by the banking industry, For those principles not covered by the Compendium of Accounting Standards for Banks, banks can use generally accepted accounting principles issued by the Chilean Accountant’s Association AG which coincide with International Financial Reporting Standards (IFRS) issued by the International Accounting Standards Board (IASB), If discrepancies exist between the accounting principles issued by the FMC (Compendium of Accounting Standards for Banks) and IFRS the Compendium of Accounting Standards for Banks will take precedence, ¿Qué podemos hacer por ti hoy?