Aura Minerals director buys 3,500 BDRs at $28.58

Available on EDGAR 09/14/2026 - 04:35 PM EDT Accepted by SEC EDGAR 09/14/2026 - 04:30 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Aura Minerals Inc. (AUGO) director Sousa Mauad Bruno reported that an entity associated with him, Kapitalo Investimentos, purchased 3,500 Brazilian Depositary Receipts (BDRs) on September 10, 2026 in an open-market or private transaction at a weighted average price of $28.58 per BDR. After this transaction, the entity holds 13,295,628 BDRs indirectly. Each BDR represents common shares of Aura Minerals, with three BDRs equal to one common share, and the reporting person disclaims beneficial ownership except to the extent of any pecuniary interest.

Insider Trade Summary

Net Buyer: 3,500 shares

Net Buy 1 txn

Insider Sousa Mauad Bruno

Role Director

Bought 3,500 shs ($100K)

Type	Security	Shares	Price	Value
Purchase	Brazilian Depositary Receipts F1, F2	3,500	$28.5763	$100K

Holdings After Transaction: Brazilian Depositary Receipts — 13,295,628 contracts (Indirect, By Kapitalo Investimentos)

Holdings Before and After: Brazilian Depositary Receipts, 13,292,128 to 13,295,628 contracts (Indirect, By Kapitalo Investimentos)

Footnotes (2)

1. F1. BDRs are certificates representing Common Shares of the Issuer. Three BDRs represent one Common Share of the Issuer.
2. F2. The price reported is a weighted average price. These BDRs were bought in multiple transactions at prices ranging from $28.44 to $28.73, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of BDRs bought at each separate price within the ranges set forth in footnote (2) to this Form 4. The weighted average price, R$146.17 Brazilian reais ("BRL") per BDR, has been converted to U.S. dollars ("USD") using the Banco Central do Brasil's conversion rate as of September 10, 2026.

Key Figures

BDRs purchased: 3,500 Brazilian Depositary Receipts Weighted average purchase price per BDR: $28.58 per BDR BDR price range: $28.44–$28.73 per BDR +4 more

7 metrics

BDRs purchased 3,500 Brazilian Depositary Receipts Purchase by entity associated with director on September 10, 2026

Weighted average purchase price per BDR $28.58 per BDR Weighted average in U.S. dollars for trades between $28.44 and $28.73

BDR price range $28.44–$28.73 per BDR Range of prices for multiple purchase executions on September 10, 2026

Indirect BDR holdings after transaction 13,295,628 Brazilian Depositary Receipts Total BDRs held indirectly through Kapitalo Investimentos after the purchase

Underlying common shares for this purchase 1,166.67 common shares Underlying Aura Minerals common shares represented by the 3,500 BDRs

Exchange-rate-based BDR price R$146.17 per BDR Weighted average BDR price in Brazilian reais, converted to U.S. dollars for reporting

BDR-to-common-share ratio 3 BDRs per 1 common share Each Brazilian Depositary Receipt represents a fraction of an Aura Minerals common share

Key Terms

Brazilian Depositary Receipts, weighted average price, pecuniary interest

3 terms

Brazilian Depositary Receipts financial

"BDRs are certificates representing Common Shares of the Issuer."

Brazilian Depositary Receipts (BDRs) are certificates traded on Brazilian exchanges that represent ownership of shares in foreign companies, allowing local investors to buy and sell exposure to those overseas stocks without opening foreign brokerage accounts. They matter because they let investors diversify across global companies using local currency and trading hours, similar to buying a locally issued voucher for a foreign product, while still exposing portfolios to the performance and risks of the underlying foreign shares.

weighted average price financial

"The price reported is a weighted average price."

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

pecuniary interest financial

"disclaims beneficial ownership ... except to the extent of its pecuniary interest"

FAQ

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

What insider transaction did Aura Minerals Inc. (AUGO) report on this Form 4?

Aura Minerals reported that an entity associated with director Sousa Mauad Bruno bought 3,500 Brazilian Depositary Receipts (BDRs) on September 10, 2026 in a purchase classified as an open-market or private transaction.

At what price were the Aura Minerals (AUGO) BDRs purchased in this Form 4?

The 3,500 BDRs were bought at a weighted average price of $28.58 per BDR, based on trades between $28.44 and $28.73. The weighted average corresponds to R$146.17 per BDR, converted to U.S. dollars using Banco Central do Brasil’s rate on September 10, 2026.

How many Aura Minerals (AUGO) BDRs does the reporting entity hold after this transaction?

Following the purchase, the entity associated with the director holds 13,295,628 Brazilian Depositary Receipts (BDRs) indirectly. The filing states that the reporting person disclaims beneficial ownership except to the extent of any pecuniary interest.

How do Aura Minerals (AUGO) BDRs relate to common shares?

The filing explains that Brazilian Depositary Receipts (BDRs) are certificates representing Aura Minerals common shares, and that three BDRs represent one common share of Aura Minerals. The reported purchase of BDRs corresponds to 1,166.67 underlying common shares.

Was the Aura Minerals (AUGO) insider trade made under a Rule 10b5-1 trading plan?

No. The Form 4 indicates the Rule 10b5-1 checkbox is not affirmed, and no footnote states that the transaction was made under a Rule 10b5-1 or other pre-arranged trading plan.

Is the Aura Minerals (AUGO) director the direct owner of the BDRs reported?

No. The BDRs are held indirectly through Kapitalo Investimentos. The reporting person is a director and disclaims beneficial ownership of the securities except for any pecuniary interest, according to the filing’s remarks.

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

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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^*

Sousa Mauad Bruno

(Last) (First) (Middle)

C/O AURA TECHNICAL SERVICES INC.

3390 MARY ST, SUITE 116

(Street)

COCONUT GROVE FLORIDA 33133

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Aura Minerals Inc. [ AUGO ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/10/2026

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

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
Brazilian Depositary Receipts	(1)	09/10/2026		P		3,500		(1)	(1)	Common shares, no par value	1,166.67	$28.5763(2)	13,295,628	I	By Kapitalo Investimentos

Explanation of Responses:

1. BDRs are certificates representing Common Shares of the Issuer. Three BDRs represent one Common Share of the Issuer.

2. The price reported is a weighted average price. These BDRs were bought in multiple transactions at prices ranging from $28.44 to $28.73, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of BDRs bought at each separate price within the ranges set forth in footnote (2) to this Form 4. The weighted average price, R$146.17 Brazilian reais ("BRL") per BDR, has been converted to U.S. dollars ("USD") using the Banco Central do Brasil's conversion rate as of September 10, 2026.

Remarks:

Each Reporting Person disclaims beneficial ownership in the securities reported on this Form 4 except to the extent of its pecuniary interest, if any, therein, and this report shall not be deemed to be an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose.

	Bruno Sousa Mauad	09/14/2026
	** 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)