Aura Minerals director sells 280K shares, BDRs

Aura Minerals Inc. (AUGO) director Bruno Sousa Mauad reported indirect sales of securities held through Kapitalo Investimentos.

Rhea-AI Filing Summary

Aura Minerals Inc. (AUGO) director Bruno Sousa Mauad reported indirect sales of securities held through Kapitalo Investimentos. On 2026-08-19, entities associated with him sold 280,000 Common Shares at a weighted average price of $81.67 per share and 38,684 Brazilian Depositary Receipts (BDRs) at a weighted average price of $27.98 per BDR, with each BDR representing one-third of a Common Share. After these transactions, the reporting entities held 168,765 Common Shares and 15,634,789 BDRs indirectly. The reporting person disclaims beneficial ownership except to the extent of any pecuniary interest and did not indicate use of a Rule 10b5-1 trading plan.

Insider Trade Summary

Net Seller: 318,684 shares

Net Sell 2 txns

Insider Sousa Mauad Bruno

Role Director

Sold 318,684 shs ($23.95M)

Type	Security	Shares	Price	Value
Sale	Brazilian Depository Receipts F2, F3	38,684	$27.98	$1.08M
Sale	Common Shares F1	280,000	$81.67	$22.87M

Holdings After Transaction: Brazilian Depository Receipts — 15,634,789 contracts (Indirect, By Kapitalo Investimentos); Common Shares — 168,765 shares (Indirect, By Kapitalo Investimentos)

Footnotes (3)

1. F1. The price reported is a weighted average price. These shares were bought in one transaction at price of $81.67. 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 shares sold at each separate price within the ranges set forth in footnote (2) to this Form 4;
2. F2. Brazilian Depositary Receipts ("BDR") are certificates representing Common Shares, no par value ("Common Shares") of the Issuer. Three BDRs represent one Common Share of the Issuer.
3. F3. The price reported is a weighted average price. These BDRs were sold in multiple transactions at prices ranging from $27.55 to $28.34, 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 sold at each separate price within the ranges set forth in footnote (3) to this Form 4. The weighted average price, R$144.71 Brazilian reais ("BRL") per BDR, has been converted to U.S. dollars ("USD") using the Banco Central do Brasil's conversion rate as of August 19, 2026.

Key Figures

Common Shares sold: 280,000 shares Common Shares price: $81.67 per share Common Shares held after transaction: 168,765 shares +5 more

8 metrics

Common Shares sold 280,000 shares Indirect sale on 2026-08-19

Common Shares price $81.67 per share Weighted average sale price for 280,000 Common Shares

Common Shares held after transaction 168,765 shares Indirect holdings following the Common Shares sale

BDRs sold 38,684 BDRs Indirect derivative sale on 2026-08-19

BDR price (USD weighted average) $27.98 per BDR Converted from BRL 144.71 using Banco Central do Brasil rate as of 2026-08-19

BDRs held after transaction 15,634,789 BDRs Indirect holdings following the BDR sale

BDR to Common Share ratio 3 BDRs per 1 Common Share Each Brazilian Depositary Receipt represents one-third of a Common Share

Net shares sold (all securities) 318,684 shares/BDRs Total net sell volume across reported transactions

Key Terms

Brazilian Depositary Receipts, weighted average price, pecuniary interest, indirect ownership, +1 more

5 terms

Brazilian Depositary Receipts financial

"Brazilian Depositary Receipts ("BDR") are certificates representing Common Shares"

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. These BDRs were sold"

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"

indirect ownership financial

"total_shares_following_transaction ... direct_or_indirect": "I""

Rule 10b5-1 regulatory

"aff_10b5_one": false, the filing's document-level Rule 10b5-1 checkbox"

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.

FAQ

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

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

The filing reports two indirect sales by entities associated with director Bruno Sousa Mauad on 2026-08-19: a sale of 280,000 Common Shares and a sale of 38,684 Brazilian Depositary Receipts (BDRs).

How many Aura Minerals (AUGO) Common Shares were sold and at what price?

Entities associated with the director sold 280,000 Common Shares of Aura Minerals at a weighted average price of $81.67 per share on 2026-08-19, in a single transaction according to the disclosure.

What Brazilian Depositary Receipt (BDR) transactions did Aura Minerals (AUGO) disclose?

Entities associated with the director sold 38,684 BDRs on 2026-08-19 at a weighted average price of $27.98 per BDR, based on a BRL 144.71 price converted using Banco Central do Brasil’s rate. Three BDRs represent one Common Share.

What are the director’s indirect holdings in Aura Minerals (AUGO) after these sales?

After the reported sales, entities associated with the director held 168,765 Common Shares and 15,634,789 Brazilian Depositary Receipts indirectly, as disclosed in the Form 4 data for each security type.

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

The filing indicates the Rule 10b5-1 checkbox is not marked, and no footnote states that the transactions were made pursuant to a Rule 10b5-1 trading plan.

Does the reporting person claim full beneficial ownership of the Aura Minerals (AUGO) securities?

No. The reporting person states that each reporting person disclaims beneficial ownership of the reported securities except to the extent of its pecuniary interest, and that this is not an admission of beneficial ownership.

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

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Accepted by SEC EDGAR 08/20/2026 - 04:05 PM EDT 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^*

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)
08/19/2026

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
Common Shares	08/19/2026		S		280,000	D	$81.67(1)	168,765	I	By Kapitalo Investimentos

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 Depository Receipts	(2)	08/19/2026		S			38,684	(2)	(2)	Common shares, no par value	12,894.67	$27.98(3)	15,634,789	I	By Kapitalo Investimentos

Explanation of Responses:

1. The price reported is a weighted average price. These shares were bought in one transaction at price of $81.67. 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 shares sold at each separate price within the ranges set forth in footnote (2) to this Form 4;

2. Brazilian Depositary Receipts ("BDR") are certificates representing Common Shares, no par value ("Common Shares") of the Issuer. Three BDRs represent one Common Share of the Issuer.

3. The price reported is a weighted average price. These BDRs were sold in multiple transactions at prices ranging from $27.55 to $28.34, 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 sold at each separate price within the ranges set forth in footnote (3) to this Form 4. The weighted average price, R$144.71 Brazilian reais ("BRL") per BDR, has been converted to U.S. dollars ("USD") using the Banco Central do Brasil's conversion rate as of August 19, 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	08/20/2026
	** 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)