Santander Brasil (BSBR) officer discloses holding 82,820 SANB11 units

Rhea-AI Filing Summary

Banco Santander (Brasil) S.A. officer Mariana Cahen Margulies filed an initial ownership report showing direct holdings of 82,820 UNIT - SANB11 securities. This Form 3 does not reflect a new buy or sell transaction; it simply records her existing position in the company.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Margulies Mariana Cahen

Role Officer w/o Specific Desig

Type	Security	Shares	Price	Value
holding	UNIT - SANB11	--	--	--

Holdings After Transaction: UNIT - SANB11 — 82,820 shares (Direct)

Footnotes (1)

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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

OMB APPROVAL

OMB Number:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

Margulies Mariana Cahen

(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	82,820	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/ Mariana Cahen Margulies	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 Banco Santander (Brasil) S.A. (BSBR) Form 3 filing show?

The Form 3 shows officer Mariana Cahen Margulies directly holds 82,820 UNIT - SANB11 securities. This is an initial ownership report, recording her existing position rather than reporting a new stock purchase or sale.

Did the BSBR insider buy or sell shares in this Form 3 filing?

No, this Form 3 does not show a buy or sell transaction. It only reports that the officer directly holds 82,820 UNIT - SANB11 units after the reported date, serving as a baseline ownership disclosure.

Who is the reporting person in the Banco Santander (Brasil) S.A. Form 3?

The reporting person is Mariana Cahen Margulies, listed as an officer of Banco Santander (Brasil) S.A. The filing reports her direct ownership of 82,820 UNIT - SANB11 securities, with no derivative positions disclosed.

How many Banco Santander (Brasil) UNIT - SANB11 securities does the insider hold?

The insider directly holds 82,820 UNIT - SANB11 securities following the reported position. This total represents her recorded ownership in the company’s units at the time of the Form 3 filing, without indicating any recent trading activity.

Does the BSBR Form 3 filing include any derivative securities for the insider?

No, the Form 3 shows no derivative securities for the insider. The derivativeSummary section is empty, and the only reported holding is 82,820 UNIT - SANB11 held directly by the officer as of the reported date.