Santander Brasil officer sells 7,474 units

An officer of Banco Santander (Brasil) S.A. reported same-day purchases and larger sales of UNIT - SANB11 on August 28, 2026, at prices around R$29.9 per unit.

Rhea-AI Filing Summary

Banco Santander (Brasil) S.A. (BSBR) officer Marcos Jose Maia da Silva reported mixed trades in UNIT - SANB11 on August 28, 2026. He purchased 79 units at $5.76 per unit and sold 7,474 units at $5.74 per unit, both prices equivalent to about R$29.9 per unit using an exchange rate of R$5.1999 per US$1.00. No Rule 10b5-1 trading plan is indicated, and post-transaction holdings are not stated.

Insider Trade Summary

Net Seller: 7,395 shares

Net Sell 2 txns

Insider da Silva Marcos Jose Maia

Role Officer w/o Specific Desig

Bought 79 shs ($455.04)

Sold 7,474 shs ($43K)

Type	Security	Shares	Price	Value
Purchase	UNIT - SANB11 F1	79	$5.76	$455.04
Sale	UNIT - SANB11 F2	7,474	$5.74	$43K

Holdings After Transaction: UNIT - SANB11 — 42,900.76 shares (Direct)

Footnotes (2)

1. F1. Equivalent to R$ 29.97 per share. Amounts presented were converted into U.S. dollars at the exchange rate of R$ 5.1999 per U.S.$1.00 as reported by Brazilian Central Bank on August 28, 2026.
2. F2. Equivalent to R$ 29.90 per share. Amounts presented were converted into U.S. dollars at the exchange rate of R$ 5.1999 per U.S.$1.00 as reported by Brazilian Central Bank on August 28, 2026.

Key Figures

Units purchased: 79 units Purchase price per unit: $5.76 per unit Units sold: 7,474 units +3 more

6 metrics

Units purchased 79 units UNIT - SANB11 purchased by officer on August 28, 2026

Purchase price per unit $5.76 per unit UNIT - SANB11 purchase on August 28, 2026; equivalent to R$29.97

Units sold 7,474 units UNIT - SANB11 sold by officer on August 28, 2026

Sale price per unit $5.74 per unit UNIT - SANB11 sale on August 28, 2026; equivalent to R$29.90

Exchange rate R$5.1999 per US$1.00 Brazilian Central Bank rate used for August 28, 2026 price conversion

Net units sold 7,395 units Net of 7,474 units sold and 79 units purchased on August 28, 2026

Key Terms

Rule 10b5-1, UNIT - SANB11, exchange rate, Brazilian Central Bank

4 terms

Rule 10b5-1 regulatory

"No Rule 10b5-1 trading plan is indicated"

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

UNIT - SANB11 financial

"trades in UNIT - SANB11 on August 28, 2026"

exchange rate financial

"converted into U.S. dollars at the exchange rate of R$ 5.1999"

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 August 28, 2026"

FAQ

What insider transactions were reported for BSBR on August 28, 2026?

Officer Marcos Jose Maia da Silva reported a purchase of 79 UNIT - SANB11 at $5.76 per unit and a sale of 7,474 units at $5.74 per unit on August 28, 2026.

Did the BSBR officer have net buying or selling activity in this Form 4/A?

The officer had net selling activity, with 7,474 units sold and 79 units purchased, for a net sale of 7,395 units of UNIT - SANB11 on August 28, 2026.

At what prices did the BSBR insider trade UNIT - SANB11?

The officer bought 79 units at $5.76 per unit and sold 7,474 units at $5.74 per unit. Footnotes state these correspond to about R$29.97 and R$29.90 per unit using an exchange rate of R$5.1999 per US$1.00.

Were the BSBR insider transactions made under a Rule 10b5-1 trading plan?

No. The filing indicates no Rule 10b5-1 trading plan; the related checkbox is not marked, and the footnotes describe only currency conversion details, not any pre-arranged trading arrangement.

Does the Form 4/A state the BSBR officer’s holdings after these trades?

No. The non-derivative transaction rows list the trades but the total shares following the transaction fields are blank, so resulting UNIT - SANB11 holdings are not specified.

What exchange rate was used to convert BSBR insider trade prices to U.S. dollars?

The footnotes state that prices were converted using an exchange rate of R$5.1999 per US$1.00, as reported by the Brazilian Central Bank on August 28, 2026.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/02/2026 - 04:00 PM Accepted by SEC EDGAR 09/02/2026 - 03:59 PM Learn about SEC filing dates

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^*

da Silva Marcos Jose Maia

(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)
	Officer w/o Specific Desig

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/28/2026

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)
09/01/2026

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	08/28/2026	08/28/2026	P		79	A	$5.76(1)	455.04	D
UNIT - SANB11	08/28/2026	08/28/2026	S		7,474	D	$5.74(2)	42,900.76	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$ 29.97 per share. Amounts presented were converted into U.S. dollars at the exchange rate of R$ 5.1999 per U.S.$1.00 as reported by Brazilian Central Bank on August 28, 2026.

2. Equivalent to R$ 29.90 per share. Amounts presented were converted into U.S. dollars at the exchange rate of R$ 5.1999 per U.S.$1.00 as reported by Brazilian Central Bank on August 28, 2026.

	/s/ Marcos Jose Maia da Silva	09/01/2026
	** 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)