[Form 4] Banco Santander (Brasil) S.A. Insider Trading Activity

Rhea-AI Filing Summary

Banco Santander (Brasil) S.A. executive vice president Janikian Cezar Augusto completed an open-market sale of 17,000 Units - SANB11 on March 19, 2026 at $5.87 per unit, held directly.

After this transaction, he held 53,607 units. The reported U.S. dollar price is equivalent to R$29.50 per share, using an exchange rate of R$5.0238 per US$1.00 as reported by the Brazilian Central Bank on April 13, 2026.

Insider Trade Summary

Net Seller: 17,000 shares ($99,790)

Net Sell 1 txn

Insider Janikian Cezar Augusto

Role VP Exec Officer

Sold 17,000 shs ($100K)

Type	Security	Shares	Price	Value
Sale	Unit - SANB11	17,000	$5.87	$100K

Holdings After Transaction: Unit - SANB11 — 53,607 shares (Direct)

Footnotes (1)

1. [object Object]

Key Figures

Units sold: 17,000 units Sale price per unit: $5.87 per unit Holdings after sale: 53,607 units +2 more

5 metrics

Units sold 17,000 units Open-market sale of Unit - SANB11 on March 19, 2026

Sale price per unit $5.87 per unit Reported transaction price for Units - SANB11

Holdings after sale 53,607 units Units - SANB11 held directly after the transaction

Local currency equivalent R$29.50 per share Footnote equivalence for SANB11 sale price

FX rate used R$5.0238 per US$1.00 Brazilian Central Bank rate on April 13, 2026 for conversions

Key Terms

open-market sale, Unit - SANB11, exchange rate, Brazilian Central Bank

4 terms

open-market sale financial

"transaction_action: "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Unit - SANB11 financial

"security_title: "Unit - SANB11""

exchange rate financial

"Amounts presented were converted into U.S. dollars at the exchange rate of R$ 5.0238"

Exchange rate is the price of one currency expressed in another—for example, how many euros you receive for one US dollar. It matters to investors because changes in that price alter the reported profits, costs and value of assets for companies and portfolios that operate or hold money across borders; think of it like switching measurement units, where the same item can look bigger or smaller depending on the unit used.

Brazilian Central Bank financial

"as reported by Brazilian Central Bank on April 13, 2026"

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Janikian Cezar Augusto

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

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	VP Exec Officer

2a. Foreign Trading Symbol
[UNIT - SANB11]

3. Date of Earliest Transaction (Month/Day/Year)
03/19/2026

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

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

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

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Unit - SANB11	03/19/2026		S		17,000	D	$5.87(1)	53,607	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Equivalent to R$29.50 per share. Amounts presented were converted into U.S. dollars at the exchange rate of R$ 5.0238 per U.S.$1.00 as reported by Brazilian Central Bank on April 13, 2026.

	/s/ Cezar Augusto Janikian	04/14/2026
	** 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 4 (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 4: SEC 1474 (03-26)