Banco Santander (SAN) reports $11.26B in 13F holdings; 948 entries

Rhea-AI Filing Summary

Banco Santander, S.A. filed a Form 13F reporting holdings as an institutional investment manager. The report lists 948 Form 13F information table entries with a total market value of $11,263,065,252.

The filing names five other included managers and is signed by Jose Galiana, Deputy Chief Accounting Officer.

The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F COVER PAGE

OMB APPROVAL

OMB Number:			3235-0006
Estimated average burden
hours per response:			23.8

Report for the Calendar Year or Quarter Ended: 09-30-2025

Check here if Amendment		Amendment Number:
This Amendment (Check only one.):		is a restatement.
		adds new holdings entries.

Institutional Investment Manager Filing this Report:
Name:	Banco Santander, S.A.
Address:	Ciudad Grupo Santander
	Boadilla del Monte
	Madrid, U3 28660
Form 13F File Number:	028-04177
CRD Number (if applicable):
SEC File Number (if applicable):	001-12518

The institutional investment manager filing this report and the person by whom it is signed hereby represent that the person signing the report is authorized to submit it, that all information contained herein is true, correct and complete, and that it is understood that all required items, statements, schedules, lists, and tables, are considered integral parts of this form.

Person Signing this Report on Behalf of Reporting Manager:
Name:		Jose Galiana
Title:		Deputy Chief Accounting Officer
Phone:		034-615900262
Signature, Place, and Date of Signing:
/s/ Jose Galiana			Madrid, U3	11-03-2025
[Signature]			[City, State]	[Date]

Report Type (Check only one.):
X	13F HOLDINGS REPORT. (Check here if all holdings of this reporting manager are reported in this report.)
	13F NOTICE. (Check here if no holdings reported are in this report, and all holdings are reported by other reporting manager(s).)
	13F COMBINATION REPORT. (Check here if a portion of the holdings for this reporting manager are reported in this report and a portion are reported by other reporting manager(s).)

Form 13F Summary Page
	Report Summary:
	Number of Other Included Managers:		5
	Form 13F Information Table Entry Total:		948
	Form 13F Information Table Value Total:		11,263,065,252
			(round to nearest dollar)

List of Other Included Managers:
Provide a numbered list of the name(s) and Form 13F file number(s) of all institutional investment managers with respect to which this report is filed, other than the manager filing this report.
[If there are no entries in this list, state "NONE" and omit the column headings and list entries.]
	No.	Name	Form 13F File No.	CRD No. (if applicable)	SEC File No. (if applicable)	CIK
	1	Banco Santander International SA	028-17923			0001697263
	2	Banco Santander International	028-17917			0001697453
	3	SAM Investment Holdings, S.L.	028-18759			0001739361
	4	Grupo Empresarial Santander, S.L.	028-20720			0001844952
	5	Banco Santander Mexico S.A., Institucion de Banca Multiple, Grupo Financiero Santander Mexico	028-17978			0001698287

FAQ

What does Banco Santander's Form 13F (SAN) disclose?

The Form 13F discloses institutional holdings totaling 948 table entries with an aggregate market value of $11,263,065,252. It lists five other included managers and is certified by the signing officer, Jose Galiana.

How many holdings entries are reported in Banco Santander's 13F?

The filing reports 948 entries in the Form 13F information table. This count is the number of distinct holdings rows reported by the manager on the summary page of the filing.

What is the total market value of securities reported by Banco Santander in this 13F?

The Form 13F summary shows a total market value of $11,263,065,252. That figure is the rounded aggregate value reported on the filing's summary page.

Who signed Banco Santander's Form 13F filing?

The report is signed by Jose Galiana, Deputy Chief Accounting Officer. The signature block shows the filing was signed in Madrid on 11-03-2025.