Santander Brasil officer buys 79 units at $5.76

Q: What prices were paid in the BSBR Form 4 transactions on August 28, 2026?

The filing shows transactions in UNIT - SANB11 at $5.76 per unit for 79 units and $5.74 per unit for 7,474 units. Footnotes state these correspond to R$29.97 and R$29.90 per unit, converted using R$5.1999 per US$1.00.

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

No. The Form 4 indicates the Rule 10b5-1 checkbox is not marked, so the reported UNIT - SANB11 transactions on August 28, 2026, were not pursuant to a Rule 10b5-1 trading plan.

Q: What exchange rate did BSBR use to convert the Form 4 transaction prices?

The footnotes state an exchange rate of R$5.1999 per US$1.00, as reported by the Brazilian Central Bank on August 28, 2026. This rate was used to convert the R$29.97 and R$29.90 per-unit prices into U.S. dollars.

Q: What securities were involved in the BSBR insider transactions?

Both transactions involved UNIT - SANB11, a unit security of Banco Santander (Brasil) S.A. On August 28, 2026, the officer reported activity in 79 units at $5.76 and 7,474 units at $5.74 per unit.

In a Form 4, Santander Brasil reported insider trades totaling 79 and 7,474 units that were not made under a Rule 10b5-1 trading plan.

Filing Impact

(Moderate)

Filing Sentiment

(Negative)How Sentiment works

Sentiment and the balance of points

Rhea-AI Sentiment reads the wording of the document, how positive or negative its language is on a 1 to 5 scale. The balance of points shown with the takes weighs what the document actually discloses, so the two can disagree, for example when a trial that missed its main goal is described in upbeat language.

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Form Type

Rhea-AI Filing Summary

Banco Santander (Brasil) S.A. (BSBR) officer Marcos Jose Maia da Silva reported two non-derivative transactions in UNIT - SANB11 on August 28, 2026. He purchased 79 units at $5.76 per unit, equivalent to R$29.97, and separately reported a transaction involving 7,474 units at $5.74 per unit, equivalent to R$29.90, both using an exchange rate of R$5.1999 per US$1.00 from the Brazilian Central Bank. The filing indicates these trades were not made under a Rule 10b5-1 trading plan.

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)

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.$1.00 as reported by Brazilian Central Bank on August 28, 2026.
F2. Equivalent to R$ 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: $5.7600 per unit Second transaction units: 7,474 units +5 more

8 metrics

Units purchased 79 units Purchase of UNIT - SANB11 on August 28, 2026

Purchase price per unit $5.7600 per unit 79 UNIT - SANB11 on August 28, 2026; equivalent to R$29.97

Second transaction units 7,474 units Transaction in UNIT - SANB11 on August 28, 2026

Second transaction price per unit $5.7400 per unit 7,474 UNIT - SANB11; equivalent to R$29.90

Local currency price per unit (first transaction) R$29.97 per unit Converted to U.S. dollars using R$5.1999 per US$1.00

Local currency price per unit (second transaction) R$29.90 per unit Converted to U.S. dollars using R$5.1999 per US$1.00

Exchange rate R$5.1999 per US$1.00 Rate from Brazilian Central Bank on August 28, 2026 used for conversions

Net reported buy-sell shares 79 units Net buy direction across reported transactions

Key Terms

UNIT - SANB11, exchange rate, Brazilian Central Bank

3 terms

UNIT - SANB11 financial

"security_title: "UNIT - SANB11""

exchange rate financial

"Amounts presented were converted into U.S. dollars at the exchange rate"

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 regulatory

"as reported by Brazilian Central Bank on August 28, 2026"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transactions did BSBR officer Marcos Jose Maia da Silva report?

He reported two UNIT - SANB11 transactions on August 28, 2026: a purchase of 79 units at $5.76 per unit and another transaction involving 7,474 units at $5.74 per unit, both based on Brazilian real values converted to U.S. dollars.

What prices were paid in the BSBR Form 4 transactions on August 28, 2026?

The filing shows transactions in UNIT - SANB11 at $5.76 per unit for 79 units and $5.74 per unit for 7,474 units. Footnotes state these correspond to R$29.97 and R$29.90 per unit, converted using R$5.1999 per US$1.00.

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

No. The Form 4 indicates the Rule 10b5-1 checkbox is not marked, so the reported UNIT - SANB11 transactions on August 28, 2026, were not pursuant to a Rule 10b5-1 trading plan.

What exchange rate did BSBR use to convert the Form 4 transaction prices?

The footnotes state an exchange rate of R$5.1999 per US$1.00, as reported by the Brazilian Central Bank on August 28, 2026. This rate was used to convert the R$29.97 and R$29.90 per-unit prices into U.S. dollars.

What securities were involved in the BSBR insider transactions?

Both transactions involved UNIT - SANB11, a unit security of Banco Santander (Brasil) S.A. On August 28, 2026, the officer reported activity in 79 units at $5.76 and 7,474 units at $5.74 per unit.

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

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Available on EDGAR 09/01/2026 - 05:11 PM EDT Accepted by SEC EDGAR 09/01/2026 - 05:10 PM EDT

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

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)

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
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	A	$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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

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)

Source: View Original Filing on SEC EDGAR