SEC Form 4 · accession 0002117905-26-000040

Aura Minerals Inc. · AUGO

Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗

Reporting owner

Mauad Bruno Sousa

Director

Period of report

Sep 18, 2026

Accepted (ET)

Sep 21, 2026 · 2:43 pm EDT

Rule 10b5-1 plan

box not checked

Issuer CIK

0001468642

Table I — non-derivative securities

Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Common Shares^F1	Sep 18, 2026	C	15,823	$86.8442	A	80,264	I	By Kapitalo Investimentos
Common Shares^F2	Sep 18, 2026	C	51,608	$87.4599	A	131,872	I	By Kapitalo Investimentos
Common Shares^F3	Sep 18, 2026	C	1,469	$88.4064	A	133,341	I	By Kapitalo Investimentos
Common Shares^F4	Sep 18, 2026	C	1,100	$89.5782	A	134,441	I	By Kapitalo Investimentos

Table II — derivative securities

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Brazilian Depositary Receipts^F6,F5	—	Sep 18, 2026	C	208,381	D	—	—	Common shares, no par value	69,460	12,790,929	I
Brazilian Depositary Receipts^F7,F5	—	Sep 18, 2026	C	1,619	D	—	—	Common shares, no par value	540	12,789,310	I

Explanation of responses

F1The price reported is a weighted average price. These shares were bought in multiple transactions at prices ranging from $86.16 to $87.10, 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.
F2The price reported is a weighted average price. These shares were bought in multiple transactions at prices ranging from $87.11 to $88.00, 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 (2) 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.
F3The price reported is a weighted average price. These shares were bought in multiple transactions at prices ranging from $88.13 to $88.95, 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.
F4The price reported is a weighted average price. These shares were bought in multiple transactions at prices ranging from $89.33 to $89.76, 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.
F5BDRs are certificates representing Common Shares of the Issuer. Three BDRs represent one Common Share of the Issuer.
F6The price reported is a weighted average price. These BDRs were sold in multiple transactions at prices ranging from $28.68 to $29.61, 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 (6) to this Form 4. The weighted average price, R$149.74 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 18, 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.
F7The price reported is a weighted average price. These BDRs were sold in multiple transactions at prices ranging from $29.63 to $29.92, 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 (7) to this Form 4. The weighted average price, R$153.72 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 18, 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.