Banco Santander Brasil (BSBR) officer discloses SANB11, SANB3, SANB4 holdings

Rhea-AI Filing Summary

Banco Santander (Brasil) S.A. officer Sobral Sandro Mazerino filed an initial ownership report. He directly holds 73,040 units of SANB11, 312 ordinary shares of SANB3, and 312 preferred shares of SANB4. This Form 3 records holdings and does not show new buy or sell transactions.

Insider Trade Summary

3 transactions reported

Mixed 3 txns

Insider Sobral Sandro Mazerino

Role Officer w/o Specific Desig

Type	Security	Shares	Price	Value
holding	UNIT - SANB11	--	--	--
holding	Ordinary Shares - SANB3	--	--	--
holding	Preferred Shares - SANB4	--	--	--

Holdings After Transaction: UNIT - SANB11 — 73,040 shares (Direct); Ordinary Shares - SANB3 — 312 shares (Direct); Preferred Shares - SANB4 — 312 shares (Direct)

Footnotes (1)

Understanding Insider Trading Forms →

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^*

Sobral Sandro Mazerino

(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)
03/19/2026

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)
UNIT - SANB11	73,040	D
Ordinary Shares - SANB3	312	D
Preferred Shares - SANB4	312	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/ Sandro Mazerino Sobral	03/19/2026
	** 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 BSBR Form 3 filing by Sobral Sandro Mazerino show?

The Form 3 shows Sobral Sandro Mazerino’s existing equity holdings in Banco Santander (Brasil) S.A., including units and ordinary and preferred shares, as an officer of the company, without indicating any new purchase or sale activity.

How many SANB11 units does the Banco Santander Brasil officer report holding?

He reports holding 73,040 units of SANB11. This figure represents his direct ownership of units in Banco Santander (Brasil) S.A. as disclosed in the Form 3, serving as a baseline of his existing position.

What ordinary and preferred BSBR shares are disclosed in this Form 3?

The filing lists 312 ordinary shares under ticker SANB3 and 312 preferred shares under ticker SANB4. Both positions are reported as directly owned by the officer, with no associated transaction prices or recent trades indicated.

Does the BSBR Form 3 indicate insider buying or selling activity?

No, the Form 3 does not indicate insider buying or selling. It classifies the entries as holdings with unknown transaction codes, meaning it is an initial ownership statement rather than a record of recent trades or option exercises.

What is the role of Sobral Sandro Mazerino at Banco Santander Brasil?

He is identified as an officer of Banco Santander (Brasil) S.A. without a specific designation. The Form 3 links his officer status to the reported direct holdings in units, ordinary shares, and preferred shares of the company.