Extractive Sector Transparency Measures Act - Annual Report

Reporting Entity Name

Ero Copper Corp.

Reporting Year

From

1/1/2025

To:

12/31/2025

Date submitted

5/26/2026

Reporting Entity ESTMA Identification Number

E091548

Original Submission
Amended Report

​

​

​

Other Subsidiaries Included
(optional field)

Not Consolidated

Not Substituted

Attestation by Reporting Entity

In accordance with the requirements of the ESTMA, and in particular section 9 thereof, I attest I have reviewed the information contained in the ESTMA report for the entity(ies) listed above. Based on my knowledge, and having exercised reasonable diligence, the information in the ESTMA report is true, accurate and complete in all material respects for the purposes of the Act, for the reporting year listed above.

Full Name of Director or Officer of Reporting Entity

Eric Sye

Date

2026-05-26

Position Title

SVP Finance

Extractive Sector Transparency Measures Act - Annual Report

Reporting Year

From:

1/1/2025

To:

12/31/2025

Reporting Entity Name

Ero Copper Corp.

Currency of the Report

USD

Reporting Entity ESTMA
Identification Number

E091548

Subsidiary Reporting Entities (if necessary)

Payments by Payee

Country

Payee Name¹

Departments, Agency, etc… within Payee that Received Payments²

Taxes

Royalties

Fees

Production Entitlements

Bonuses

Dividends

Infrastructure Improvement
Payments

Total Amount paid to Payee

Notes³⁴

Brazil

Federal Government of Brazil

National Mining Agency

​

​

$

13,941,000

$

367,000

$

14,308,000

Mineral royalties and mining concessions

Brazil

Municipal Government of
Tucuma

City Hall

​

$

782,000

$

1,981,000

$

2,763,000

Infrastructure improvement payments related to road improvements

Brazil

State Government of Pará

State Treasury Department

​

​

$

1,058,000

$

1,058,000

Mineral royalties and mining concessions

Brazil

Municipal Government of
Nova Xavantina

City Hall

​

​

​

$

256,000

$

256,000

Infrastructure improvement payments related to road improvements

Brazil

State Government of
Mato Grosso

State Treasury Department

​

​

$

794,000

​

$

794,000

Mineral royalties and mining concessions

Brazil

Federal Government of Brazil

Ministry of Finance

$

18,166,000

​

​

​

​

​

​

​

​

$

18,166,000

Income taxes

Brazil

Federal Government of Brazil

National Water Agency

​

​

​

​

$

72,000

​

​

​

​

$

72,000

Fees for the regularization of the water distribution system

Additional Notes:

¹ All amounts paid to payees were in BRL, and have been converted and reported in US dollars at an average exchange rate for 2025: $1 BRL = $0.1790 USD

Extractive Sector Transparency Measures Act - Annual Report

Reporting Year

From:

1/1/2025

To:

12/31/2025

Reporting Entity Name

Ero Copper Corp.

Currency of the Report

 USD

Reporting Entity ESTMA
Identification Number

E091548 

Subsidiary Reporting Entities (if necessary)

Payments by Project

Country

Project Name¹

Taxes

Royalties

Fees

Production Entitlements

Bonuses

Dividends

Infrastructure Improvement
Payments

Total Amount paid by Project

Notes²³

Brazil

Caraiba

$

272,000

$

8,683,000

$

149,000

$

9,104,000

Brazil

Tucuma

$

12,323,000

$

4,512,000

$

782,000

$

1,981,000

$

19,598,000

Brazil

Xavantina

$

5,571,000

$

2,597,000

$

127,000

$

256,000

$

8,551,000

Brazil

AV Mineracao

$

162,000

$

162,000

Additional Notes³:

¹ All amounts paid to payees were in BRL, and have been converted and reported in US dollars at an average exchange rate for 2025: $1 BRL = $0.1790 USD