Aura Minerals: 24,000 receipts sold to buy 8,000 shares

BDR-sale proceeds funded a common-share purchase, while Kapitalo Investimentos also settled its cash-settled total return swap position.

Rhea-AI Filing Summary

Aura Minerals Inc. (AUGO) director Mauad Bruno Sousa reported transactions conducted indirectly by Kapitalo Investimentos on September 24, 2026. Kapitalo sold 24,000 Brazilian Depositary Receipts (BDRs) at a weighted-average $27.7424 per BDR and acquired 8,000 common shares at a weighted-average $83.1391 per share; proceeds from the BDR sale funded the purchase, effectively converting the interest. Kapitalo also disposed of 32,000 Cash-Settled Total Return Swap securities, settling the swap position at $27.53. Reported post-transaction positions were 11,434,676 BDRs, 321,446 swap securities, and 190,541 common shares.

Insider Trade Summary

Net Seller: 32,000 shares

Net Sell 3 txns

Insider Sousa Mauad Bruno

Role Director

Sold 32,000 shs ($881K)

Type	Security	Shares	Price	Value
Conversion	Brazilian Depositary Receipts F2, F3	24,000	$27.7424	$666K
Sale	Cash-Settled Total Return Swap F2, F4	32,000	$27.5316	$881K
Conversion	Common Shares F1	8,000	$83.1391	$665K

Holdings After Transaction: Brazilian Depositary Receipts — 11,434,676 contracts (Indirect, By Kapitalo Investimentos); Cash-Settled Total Return Swap — 321,446 contracts (Indirect, By Kapitalo Investimentos); Common Shares — 190,541 shares (Indirect, By Kapitalo Investimentos)

Footnotes (4)

1. F1. The price reported is a weighted average price. These shares were bought in multiple transactions at prices ranging from $83.00 to $83.60, 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 (1) 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.
2. F2. BDRs are certificates representing 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 $27.67 to $27.99, 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$143.69 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 24, 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.
4. F4. Kapitalo settled their position in a certain cash-settled total return swap agreement pursuant to its terms at a settlement price of $27.53 using the Banco Central do Brasil's conversion rate as of September 24, 2026.

Key Figures

BDRs disposed: 24,000 BDRs Weighted-average BDR price: $27.7424 per BDR Common shares acquired: 8,000 shares +5 more

8 metrics

BDRs disposed 24,000 BDRs Reported transaction on September 24, 2026

Weighted-average BDR price $27.7424 per BDR Sale price on September 24, 2026

Common shares acquired 8,000 shares Reported transaction on September 24, 2026

Weighted-average common-share price $83.1391 per share Purchase price on September 24, 2026

Cash-settled total return swap securities disposed 32,000 securities Reported transaction on September 24, 2026

Post-transaction BDR position 11,434,676 BDRs Reported following the September 24, 2026 transaction

Post-transaction swap position 321,446 securities Reported following the September 24, 2026 transaction

Post-transaction common-share position 190,541 shares Reported following the September 24, 2026 transaction

Key Terms

Brazilian Depositary Receipts, Cash-Settled Total Return Swap, weighted average price

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.

Cash-Settled Total Return Swap financial

"Kapitalo settled their position in a certain cash-settled total return swap agreement"

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.

FAQ

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

How many AUGO common shares did Kapitalo Investimentos acquire?

Kapitalo Investimentos acquired 8,000 common shares at a weighted-average $83.1391 per share on September 24, 2026. The reported purchase-price range was $83.00 to $83.60, and the purchase was funded by BDR-sale proceeds, effectively converting the interest; three BDRs represent one common share. No Rule 10b5-1 plan is reported.

What happened to the AUGO cash-settled total return swap?

Kapitalo Investimentos reported disposition of 32,000 Cash-Settled Total Return Swap securities and settled its position at $27.53 on September 24, 2026. Its reported post-transaction position was 321,446 swap securities.

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

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Available on EDGAR 09/28/2026 - 10:53 AM Accepted by SEC EDGAR 09/28/2026 - 10:52 AM 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)
09/24/2026

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	09/24/2026		C		8,000	A	$83.1391(1)	190,541	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	(2)	09/24/2026		C			24,000	(2)	(2)	Common shares, no par value	8,000	$27.7424(3)	11,434,676	I	By Kapitalo Investimentos
Cash-Settled Total Return Swap	(2)	09/24/2026		S/K			32,000	(2)	(2)	Common shares, no par value	10,666.67	$27.5316(4)	321,446	I	By Kapitalo Investimentos

Explanation of Responses:

1. The price reported is a weighted average price. These shares were bought in multiple transactions at prices ranging from $83.00 to $83.60, 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 (1) 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.

2. BDRs are certificates representing 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 $27.67 to $27.99, 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$143.69 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 24, 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.

4. Kapitalo settled their position in a certain cash-settled total return swap agreement pursuant to its terms at a settlement price of $27.53 using the Banco Central do Brasil's conversion rate as of September 24, 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	09/28/2026
	** 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)