Aura Minerals director converts BDRs to 5,994 shares

A director associated with Aura Minerals shifted an indirect position from BDRs into common shares through linked sale and conversion transactions.

Rhea-AI Filing Summary

Aura Minerals Inc. (AUGO) director Bruno Sousa Mauad, through Kapitalo Investimentos, reported transactions on September 16, 2026 that mostly converted indirect holdings from Brazilian Depositary Receipts (BDRs) into common shares. The activity combined a sale of BDRs with acquisitions of common shares at weighted average prices.

Insider Trade Summary

Net Seller: 18 shares

Net Sell 4 txns

Insider Sousa Mauad Bruno

Role Director

Sold 18 shs ($518.88)

Type	Security	Shares	Price	Value
Sale	Brazilian Depositary Receipts F1, F2	18	$28.8269	$518.88
Conversion	Brazilian Depositary Receipts F1, F5	17,982	$28.843	$519K
Conversion	Common Shares F3	4,662	$86.4072	$403K
Conversion	Common Shares F4	1,332	$87.1975	$116K

Holdings After Transaction: Brazilian Depositary Receipts — 13,156,941 contracts (Indirect, By Kapitalo Investimentos); Common Shares — 86,034 shares (Indirect, By Kapitalo Investimentos)

Footnotes (5)

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 sold in multiple transactions at prices ranging from $28.78 to $28.83, 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 (2) to this Form 4. The weighted average price, R$148.54 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 16, 2026.
3. F3. The price reported is a weighted average price. These shares were bought in multiple transactions at prices ranging from $85.95 to $86.89, 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 shares bought at each separate price within the ranges set forth in footnote (3) to this Form 4. The source of funds for the purchase was the sale of an equivalent number of BDRs, therefore effectively converting the interest in BDRs to an equivalent interest in common shares. See corresponding transaction in table II below.
4. F4. The price reported is a weighted average price. These shares were bought in multiple transactions at prices ranging from $86.95 to $87.43, 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 shares bought at each separate price within the ranges set forth in footnote (4) to this Form 4. The source of funds for the purchase was the sale of an equivalent number of BDRs, therefore effectively converting the interest in BDRs to an equivalent interest in common shares. See corresponding transaction in table II below.
5. F5. The price reported is a weighted average price. These BDRs were sold in multiple transactions at prices ranging from $28.66 to $29.09, 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 (5) to this Form 4. The weighted average price, R$148.62 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 16, 2026. The proceeds of the sale were used to purchase an equivalent number of common shares, therefore effectively converting the interest in BDRs to an equivalent interest in common shares. See corresponding transaction in table I above.

Key Figures

BDRs sold (single transaction): 18 BDRs BDRs disposed via conversion: 17,982 BDRs Common shares acquired (first block): 4,662 shares +4 more

7 metrics

BDRs sold (single transaction) 18 BDRs Sale of Brazilian Depositary Receipts on September 16, 2026

BDRs disposed via conversion 17,982 BDRs Conversion of derivative security on September 16, 2026

Common shares acquired (first block) 4,662 shares Conversion-related acquisition at weighted average $86.4072 per share

Common shares acquired (second block) 1,332 shares Conversion-related acquisition at weighted average $87.1975 per share

Total common shares acquired via conversion 5,994 shares Underlying common shares for 17,982 BDRs converted

BDR to common share ratio 3 BDRs per 1 common share Relationship between Aura Minerals BDRs and common shares

Weighted average BDR prices (BRL) BRL 148.54 and BRL 148.62 per BDR Converted to USD using Banco Central do Brasil rate as of September 16, 2026

Key Terms

Brazilian Depositary Receipts, weighted average price, pecuniary interest, Banco Central do Brasil

4 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

"except to the extent of its pecuniary interest, if any, therein"

Banco Central do Brasil financial

"using the Banco Central do Brasil's conversion rate as of September 16, 2026"

FAQ

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

What insider transactions in Aura Minerals (AUGO) did Bruno Sousa Mauad report?

Bruno Sousa Mauad reported indirect transactions via Kapitalo Investimentos on September 16, 2026, including selling 18 BDRs and converting 17,982 BDRs into 5,994 common shares, effectively shifting the position from BDRs to Aura Minerals common shares.

How many Aura Minerals BDRs were sold and at what prices?

The filing shows a sale of 18 BDRs at a weighted average price of about $28.83 per BDR and a separate conversion-related disposal of 17,982 BDRs at a weighted average price of about $28.84 per BDR, with detailed ranges described in the footnotes.

How many Aura Minerals (AUGO) common shares were acquired in the Form 4?

Indirectly through Kapitalo Investimentos, 4,662 common shares were acquired at a weighted average price of about $86.41 and another 1,332 common shares at about $87.20, for a total of 5,994 common shares acquired via conversion of BDRs.

What is the relationship between Aura Minerals BDRs and common shares in this filing?

The footnotes state that three BDRs represent one common share of Aura Minerals. The reported transactions convert BDR holdings into economically equivalent common share holdings using this 3:1 ratio.

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

No. The filing’s Rule 10b5-1 checkbox is not marked as affirmative, and there is no footnote indicating that these transactions were made pursuant to a Rule 10b5-1 trading plan.

Does Bruno Sousa Mauad report direct or indirect ownership in Aura Minerals on this Form 4?

All reported positions are indirect, held “By Kapitalo Investimentos.” A remark states that each reporting person disclaims beneficial ownership beyond any pecuniary interest in the reported securities.

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

Form 4 Insider Transactions: What Each Field Means →

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Available on EDGAR 09/17/2026 - 05:49 PM Accepted by SEC EDGAR 09/17/2026 - 05:49 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^*

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)
09/16/2026

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	09/16/2026		C		4,662	A	$86.4072(3)	84,702	I	By Kapitalo Investimentos
Common Shares	09/16/2026		C		1,332	A	$87.1975(4)	86,034	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 Depositary Receipts	(1)	09/16/2026		S			18	(1)	(1)	Common shares, no par value	6	$28.8269(2)	13,174,923	I	By Kapitalo Investimentos
Brazilian Depositary Receipts	(1)	09/16/2026		C			17,982	(1)	(1)	Common shares, no par value	5,994	$28.843(5)	13,156,941	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 sold in multiple transactions at prices ranging from $28.78 to $28.83, 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 (2) to this Form 4. The weighted average price, R$148.54 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 16, 2026.

3. The price reported is a weighted average price. These shares were bought in multiple transactions at prices ranging from $85.95 to $86.89, 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 shares bought at each separate price within the ranges set forth in footnote (3) to this Form 4. The source of funds for the purchase was the sale of an equivalent number of BDRs, therefore effectively converting the interest in BDRs to an equivalent interest in common shares. See corresponding transaction in table II below.

4. The price reported is a weighted average price. These shares were bought in multiple transactions at prices ranging from $86.95 to $87.43, 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 shares bought at each separate price within the ranges set forth in footnote (4) to this Form 4. The source of funds for the purchase was the sale of an equivalent number of BDRs, therefore effectively converting the interest in BDRs to an equivalent interest in common shares. See corresponding transaction in table II below.

5. The price reported is a weighted average price. These BDRs were sold in multiple transactions at prices ranging from $28.66 to $29.09, 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 (5) to this Form 4. The weighted average price, R$148.62 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 16, 2026. The proceeds of the sale were used to purchase an equivalent number of common shares, therefore effectively converting the interest in BDRs to an equivalent interest in common shares. See corresponding transaction in table I above.

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	09/17/2026
	** 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)