FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of February, 2024 Commission File Number: 001-12518 Banco Santander, S.A. (Exact name of registrant as specified in its charter) Ciudad Grupo Santander 28660 Boadilla del Monte (Madrid) Spain (Address of principal executive office) Indicate by check mark whether the registrant files or will file annual reports under cover of Form 2 ...

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F (Mark One) ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ending 31 December 2023 OR Kingdom of Spain (Jurisdiction of incorporation) Ciudad Grupo Santander 28660 Boadilla del Monte (Madrid), Spain (address of principal executive offices) José G. Cantera ☐ TRANSITION REPORT PURSUANT ...

Banco Santander, S.A. (NYSE:SAN) Q4 2023 Results Conference Call January 31, 2024 4:00 AM ET Company Participants Begona Morenes - Investor Relations Ana Botin - Executive Chair Hector Grisi - Chief Executive Officer Jose Garcia-Cantera - Chief Financial Officer Conference Call Participants Ignacio Ulargui - BNP Paribas Benjamin Toms - RBC Antonio Reale - Bank of America Carlos Cobo - Societe Generale Sofie Peterzens - JPMorgan Francisco Riquel - Alantra Equities Andrea Filtri - Mediobanca Ignacio Cerezo - ...

And this is basically -- the only piece that we needed is basically was to complement the U.S. This is not in any means to really beef up our presence in CIB in the U.S. This basically will complement the rest of our business and also will give us capabilities in four or five particular sectors that complement the rest of the business that we do in Latin America and Europe, in the U.S., which, by the way, we were not making because we didn't have the capabilities. So it's not a huge thing vis-a-vis the size ...

FORM 6-K Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Issuer For the month of October, 2023 Commission File Number: 001-12518 Banco Santander, S.A. (Exact name of registrant as specified in its charter) Ciudad Grupo Santander 28660 Boadilla del Monte (Madrid) Spain (Address of principal executive office) TABLE OF CONTENTS Item 1. January - September 2023 Financial Report 3 Financial Report 2023 | January ...

Banco Santander, S.A. (NYSE:SAN) Q2 2023 Earnings Conference Call July 26, 2023 4:00 AM ET Company Participants Begona Morenes - Investor Relations Hector Grisi - Chief Executive Officer Jose Garcia-Cantera - Chief Financial Officer Conference Call Participants Carlos Peixoto - CaixaBank Alvaro Serrano - Morgan Stanley Francisco Riquel - Alantra Ignacio Ulargui - BNP Paribas Sofie Peterzens - JPMorgan Marta Sánchez Romero - Citi Andrea Filtri - Mediobanca Britta Schmidt - Autonomous Carlos Cobo Catena - Soc ...

& Santander This presentation contains financial information prepared according to International Financial Reporting Standards (IFRS) and taken from our consolidated financial statements, as well as alternative performance measures (APMs) as defined in the Guidelines on Alternative Performance Measures issued by the European Securities and Markets Authority (ESMA) on 5 October 2015, and other non-IFRS measures. The APMs and nonIFRS measures were calculated with information from Grupo Santander; however, the ...

FORM 6-K For the month of June, 2023 Commission File Number: 001-12518 Banco Santander, S.A. (Exact name of registrant as specified in its charter) Ciudad Grupo Santander 28660 Boadilla del Monte (Madrid) Spain (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 SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Issuer Pursuant to Rule 13a-16 or 15d-16 of ...

Banco Santander, S.A. (NYSE:SAN) Q1 2023 Earnings Conference Call April 25, 2023 4:00 AM ET Company Participants Begona Morenes - IR Hector Grisi - CEO Jose Garcia-Cantera - CFO Conference Call Participants Ignacio Ulargui - BNP Paribas Francisco Riquel - Alantra Carlos Peixoto - CaixaBank Sofie Peterzens - JPMorgan Ignacio Cerezo - UBS Carlos Cobo Catena - Societe Generale Marta Sánchez Romero - Citi Andrea Filtri - Mediobanca Britta Schmidt - Autonomous Alvaro Serrano - Morgan Stanley Fernando Gil de Sant ...

Report of Foreign Issuer FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of March, 2023 Banco Santander, S.A. (Exact name of registrant as specified in its charter) Ciudad Grupo Santander 28660 Boadilla del Monte (Madrid) Spain (Address of principal executive of ice) 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 ...