Banco Santander (Brasil) S.A. (BSBR) officer discloses 22,078 units on Form 3

Rhea-AI Filing Summary

Banco Santander (Brasil) S.A. officer Eduardo Luis Sasaki filed an initial ownership report on Form 3. The filing shows he directly holds 22,078 Units – SANB11 after the reported event. This is a disclosure of his existing beneficial ownership position rather than a new buy or sell transaction.

SEC Form 3

FORM 3

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

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Sasaki Eduardo Luis

(Last) (First) (Middle)

AV PRESIDENTE JUSCELINO KUBITSCHEK, 2041

CJ 281, BLOCO A, COND. WTORRE JK

(Street)

SAO PAULO SAO PAULO 04543-011

(City) (State) (Zip)

BRAZIL

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
03/18/2026

3. Issuer Name and Ticker or Trading Symbol
Banco Santander (Brasil) S.A. [ BSBR ]

3a. Foreign Trading Symbol

5. If Amendment, Date of Original Filed (Month/Day/Year)

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Officer w/o Specific Desig.

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Units - SANB11	22,078	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

	/s/ Eduardo Luis Sasaki	03/18/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 3: SEC 1473 (03-26)

FAQ

What does the Banco Santander (Brasil) S.A. (BSBR) Form 3 filing show?

The Form 3 shows officer Eduardo Luis Sasaki’s existing holdings. He directly owns 22,078 Units – SANB11, providing a baseline of his beneficial ownership in Banco Santander (Brasil) S.A. as he becomes a reporting insider.

Did Eduardo Luis Sasaki buy or sell BSBR securities in this Form 3?

The Form 3 does not report a new purchase or sale. It simply lists Eduardo Luis Sasaki’s existing direct ownership of 22,078 Units – SANB11, establishing his starting position as an insider for future reporting.

How many Banco Santander (Brasil) S.A. units does the BSBR officer hold?

The officer, Eduardo Luis Sasaki, is reported as directly holding 22,078 Units – SANB11. This number represents his beneficial ownership position following the event that triggered his requirement to file a Form 3.

Is the BSBR Form 3 filing a routine disclosure?

Yes. This Form 3 is a routine initial disclosure of insider holdings. It records that officer Eduardo Luis Sasaki directly owns 22,078 Units – SANB11, without indicating any concurrent market transaction or change in his position.

Who is the insider named in Banco Santander (Brasil) S.A. Form 3?

The insider is Eduardo Luis Sasaki, listed as an officer without a specific designation. The filing reports his direct beneficial ownership of 22,078 Units – SANB11 in Banco Santander (Brasil) S.A.