# EDGAR Filing Document

**Accession Number:** 0001853860
**File Stem:** 0001104659-25-081963
**Filing Date:** 2025-8
**Character Count:** 58909
**Document Hash:** ddd28b33a1055bd9f4b8816773e86c81
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-25-081963.hdr.sgml**: 20250825

**ACCESSION NUMBER**: 0001104659-25-081963

**CONFORMED SUBMISSION TYPE**: SD

**PUBLIC DOCUMENT COUNT**: 18

**FILED AS OF DATE**: 20250825

**DATE AS OF CHANGE**: 20250822

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Ero Copper Corp.
- **CENTRAL INDEX KEY:** 0001853860
- **STANDARD INDUSTRIAL CLASSIFICATION:** METAL MINING [1000]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 000000000
- **STATE OF INCORPORATION:** A1
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SD
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-40459
- **FILM NUMBER:** 251247344

**BUSINESS ADDRESS:**
- **STREET 1:** 625 HOWE STREET, SUITE 1050
- **CITY:** VANCOUVER
- **STATE:** A1
- **ZIP:** V6C 2T6
- **BUSINESS PHONE:** 604-449-9236

**MAIL ADDRESS:**
- **STREET 1:** 625 HOWE STREET, SUITE 1050
- **CITY:** VANCOUVER
- **STATE:** A1
- **ZIP:** V6C 2T6

------

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**Form SD**

**Specialized Disclosure Report**

![Graphic](ero-20250822xsd001.jpg)

**Ero Copper Corp.**

**British Columbia, Canada**

(State or other jurisdiction of incorporation)

**001-40459**

(Commission File Number)

**625 Howe Street, Suite 1050**

**Vancouver, British Columbia V6C 2T6**

**Canada**

(Address of principal executive office)

**Deepk Hundal**

**(604) 449-9244**

(Name and telephone number, including area code, of the person to contact in connection with this report)

Check the appropriate box to indicate the rule pursuant to which this form is being filed, and provide the period to which the information in this form applies:

☐ Rule 13p-1 under the Securities Exchange Act (17 CFR 240.13p-1) for the reporting period from January 1 to December 31, ________________.

☒ Rule 13q-1 under the Securities Exchange Act (17 CFR 240.13q-1) for the fiscal year ended December 31, 2024.

------

#### SECTION 1 - CONFLICT MINERALS DISCLOSURE

#### Item 1.01 - Conflict Minerals Disclosure and Report
Not applicable

#### Item 1.02 - Exhibit
Not applicable

#### SECTION 2 - RESOURCE EXTRACTION ISSUER DISCLOSURE

#### Item 2.01 Resource Extraction Issuer Disclosure and Report
Ero Copper Corp. ("**Ero Copper**") is subject to Canada's Extractive Sector Transparency Measures Act ("**ESTMA**"). Ero Copper is relying on the alternative reporting provision of Item 2.01 and providing its ESTMA report for the year ended December 31, 2024 to satisfy the requirements of Item 2.01. Ero Copper's ESTMA report is available on its website at https://erocopper.com/sustainability/reporting/ or on the Government of Canada's website at https://natural-resources.canada.ca/estma-data. The payment disclosure required by Form SD is included as Exhibit 2.01 to this Form SD.

#### SECTION 3 - EXHIBITS

#### Item 3.01. Exhibits
The following exhibit is filed as part of this report.

---

| | | |
|:---|:---|:---|
| **Exhibit Number** |  | **Description** |
| 2.01 |  | [Extractive Sector Transparency Measures Act - Annual Report for the year ended December 31, 2024.](ero-20250822xex2d01.htm) |

---

------

#### SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the duly authorized undersigned.

---

| | | |
|:---|:---|:---|
|  | By: | **ERO COPPER CORP.**<br>/s/ Deepk Hundal |
| Date: August 22, 2025 |  | Deepk Hundal |
|  |  | EVP, General Counsel and Corporate Secretary |

---

------

## Exhibit 2.01

?xml version='1.0' encoding='ASCII'? Ero Copper Corp_2024-12-31

**Exhibit 2.01**

---

| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
| **Extractive Sector Transparency Measures Act - Annual Report** | **Extractive Sector Transparency Measures Act - Annual Report** | **Extractive Sector Transparency Measures Act - Annual Report** | **Extractive Sector Transparency Measures Act - Annual Report** | **Extractive Sector Transparency Measures Act - Annual Report** | **Extractive Sector Transparency Measures Act - Annual Report** | **Extractive Sector Transparency Measures Act - Annual Report** | &nbsp;&nbsp;![Graphic](ero-20250822xex2d01003.jpg) |
| **Reporting Entity Name** | Ero Copper Corp. | Ero Copper Corp. | Ero Copper Corp. | Ero Copper Corp. | Ero Copper Corp. | Ero Copper Corp. | &nbsp;&nbsp;![Graphic](ero-20250822xex2d01003.jpg) |
| **Reporting Year** | **From** | 2024-01-01 | **To:** | 2024-12-31 | **Date submitted** | 2025-05-13 | &nbsp;&nbsp;![Graphic](ero-20250822xex2d01003.jpg) |
| **Reporting Entity** **ESTMA** **Identification Number** | E091548 | E091548 | &nbsp;&nbsp;![Graphic](ero-20250822xex2d01004.jpg) Original Submission<br>![Graphic](ero-20250822xex2d01005.jpg) Amended Report | &nbsp;&nbsp;![Graphic](ero-20250822xex2d01004.jpg) Original Submission<br>![Graphic](ero-20250822xex2d01005.jpg) Amended Report |  |  | &nbsp;&nbsp;![Graphic](ero-20250822xex2d01003.jpg) |
| **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.* | *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.* | *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.* | *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.* | *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.* | *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.* | *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.* |  |
| *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.* | *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.* | *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.* | *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.* | *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.* | *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.* | *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.* |  |
| *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.* | *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.* | *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.* | *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.* | *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.* | *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.* | *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.* |  |
| *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.* | *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.* | *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.* | *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.* | *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.* | *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.* | *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.* |  |
| *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.* | *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.* | *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.* | *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.* | *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.* | *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.* | *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** | **Eric Sye** | **Eric Sye** | **Eric Sye** | **Date** | *2025-05-13* |  |
| **Position Title** | **VP Finance** | **VP Finance** | **VP Finance** | **VP Finance** | **Date** | *2025-05-13* |  |

---

---

| | | | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| **Extractive Sector Transparency Measures Act - Annual Report** | **Extractive Sector Transparency Measures Act - Annual Report** | **Extractive Sector Transparency Measures Act - Annual Report** | **Extractive Sector Transparency Measures Act - Annual Report** | **Extractive Sector Transparency Measures Act - Annual Report** | **Extractive Sector Transparency Measures Act - Annual Report** | **Extractive Sector Transparency Measures Act - Annual Report** | **Extractive Sector Transparency Measures Act - Annual Report** | **Extractive Sector Transparency Measures Act - Annual Report** | **Extractive Sector Transparency Measures Act - Annual Report** | **Extractive Sector Transparency Measures Act - Annual Report** | **Extractive Sector Transparency Measures Act - Annual Report** |
| **Reporting Year** | **From:** | 2024-01-01 | **To:**  | 2024-12-31 |  |  |  |  |  |  |  |
| **Reporting Entity Name** | Ero Copper Corp. | Ero Copper Corp. | Ero Copper Corp. | Ero Copper Corp. | Ero Copper Corp. | **Currency of the Report** | USD | USD |  |  |  |
| **Reporting Entity ESTMAIdentification Number** | E091548 | E091548 | E091548 | E091548 | E091548 |  |  |  |  |  |  |
| **Subsidiary Reporting Entities (if necessary)** |  |  |  |  |  |  |  |  |  |  |  |
| **Payments by Payee** | **Payments by Payee** | **Payments by Payee** | **Payments by Payee** | **Payments by Payee** | **Payments by Payee** | **Payments by Payee** | **Payments by Payee** | **Payments by Payee** | **Payments by Payee** | **Payments by Payee** | **Payments by Payee** |
| **Country** | **Payee Name** | **Departments, Agency, etc… within Payee that Received Payments** | **Taxes** | **Royalties** | **Fees** | **Production Entitlements** | **Bonuses** | **Dividends** | **Infrastructure ImprovementPayments** | **Total Amount paid to Payee**<sup>1</sup> | **Notes** |
| Brazil | Federal Government of Brazil | National Mining Agency |  | $7559000 | $435000 |  |  |  |  | $**7994000** | Mineral royalties and mining concessions |
| Brazil | Federal Government of Brazil | Tax Authority | $7220000 |  |  |  |  |  |  | $**7220000** | Income taxes |
| Brazil | Municipal Government of Tucuma | City Hall |  |  | $687000 |  |  |  | $2655000 | $**3342000** | Infrastructure improvement payments related to road improvements |
| Brazil | State Government of Para | Tax Authority |  |  | $1316000 |  |  |  |  | $**1316000** | License fees |
| Brazil | State Government of <br>Mato Grosso | Tax Authority |  | $497000 |  |  |  |  |  | $**497000** | Mineral royalties |
| **Additional Notes:** | <sup>1</sup> All amounts paid to payees were in BRL, and have been converted and reported in US dollars at an average exchange rate for 2024: $1 BRL = $0.1856 USD | <sup>1</sup> All amounts paid to payees were in BRL, and have been converted and reported in US dollars at an average exchange rate for 2024: $1 BRL = $0.1856 USD | <sup>1</sup> All amounts paid to payees were in BRL, and have been converted and reported in US dollars at an average exchange rate for 2024: $1 BRL = $0.1856 USD | <sup>1</sup> All amounts paid to payees were in BRL, and have been converted and reported in US dollars at an average exchange rate for 2024: $1 BRL = $0.1856 USD | <sup>1</sup> All amounts paid to payees were in BRL, and have been converted and reported in US dollars at an average exchange rate for 2024: $1 BRL = $0.1856 USD | <sup>1</sup> All amounts paid to payees were in BRL, and have been converted and reported in US dollars at an average exchange rate for 2024: $1 BRL = $0.1856 USD | <sup>1</sup> All amounts paid to payees were in BRL, and have been converted and reported in US dollars at an average exchange rate for 2024: $1 BRL = $0.1856 USD | <sup>1</sup> All amounts paid to payees were in BRL, and have been converted and reported in US dollars at an average exchange rate for 2024: $1 BRL = $0.1856 USD | <sup>1</sup> All amounts paid to payees were in BRL, and have been converted and reported in US dollars at an average exchange rate for 2024: $1 BRL = $0.1856 USD | <sup>1</sup> All amounts paid to payees were in BRL, and have been converted and reported in US dollars at an average exchange rate for 2024: $1 BRL = $0.1856 USD | <sup>1</sup> All amounts paid to payees were in BRL, and have been converted and reported in US dollars at an average exchange rate for 2024: $1 BRL = $0.1856 USD |

---

---

| | | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| **Extractive Sector Transparency Measures Act - Annual Report** | **Extractive Sector Transparency Measures Act - Annual Report** | **Extractive Sector Transparency Measures Act - Annual Report** | **Extractive Sector Transparency Measures Act - Annual Report** | **Extractive Sector Transparency Measures Act - Annual Report** | **Extractive Sector Transparency Measures Act - Annual Report** | **Extractive Sector Transparency Measures Act - Annual Report** | **Extractive Sector Transparency Measures Act - Annual Report** | **Extractive Sector Transparency Measures Act - Annual Report** | **Extractive Sector Transparency Measures Act - Annual Report** | **Extractive Sector Transparency Measures Act - Annual Report** |
| **Reporting Year** | **From:** | 2024-01-01 | **To:** | 2024-12-31 |  |  |  |  |  |  |
| **Reporting Entity Name** | Ero Copper Corp. | Ero Copper Corp. | Ero Copper Corp. | Ero Copper Corp. | Ero Copper Corp. | **Currency of the Report** | USD | USD |  |  |
| **Reporting Entity ESTMAIdentification Number** | E091548  | E091548  | E091548  | E091548  | E091548  |  |  |  |  |  |
| **Subsidiary Reporting Entities (if necessary)** |  |  |  |  |  |  |  |  |  |  |
| **Payments by Project** | **Payments by Project** | **Payments by Project** | **Payments by Project** | **Payments by Project** | **Payments by Project** | **Payments by Project** | **Payments by Project** | **Payments by Project** | **Payments by Project** | **Payments by Project** |
| **Country** | **Project Name** | **Taxes** | **Royalties** | **Fees** | **Production Entitlements** | **Bonuses** | **Dividends** | **Infrastructure ImprovementPayments** | **Total Amount paid by Project**<sup>1</sup> | **Notes** |
| Brazil | Caraiba | $&nbsp;&nbsp;&nbsp;699000 | $&nbsp;&nbsp;&nbsp;5044000 | $&nbsp;&nbsp;&nbsp;101000 |  |  |  |  | $&nbsp;&nbsp;&nbsp;**5844000** |  |
| Brazil | Tucuma |  | &nbsp;&nbsp;&nbsp;410000 | $&nbsp;&nbsp;&nbsp;2003000 |  |  |  | $&nbsp;&nbsp;&nbsp;2655000 | $&nbsp;&nbsp;&nbsp;**5068000** |  |
| Brazil | Xavantina | $&nbsp;&nbsp;&nbsp;6521000 | $&nbsp;&nbsp;&nbsp;2602000 | $&nbsp;&nbsp;&nbsp;103000 |  |  |  |  | $&nbsp;&nbsp;&nbsp;**9226000** |  |
| Brazil | AV Mineracao |  |  | $&nbsp;&nbsp;&nbsp;231000 |  |  |  |  | $&nbsp;&nbsp;&nbsp;**231000** |  |
| **Additional Notes:** | <sup>1</sup> All amounts paid to payees were in BRL, and have been converted and reported in US dollars at an average exchange rate for 2024: $1 BRL = $0.1856 USD | <sup>1</sup> All amounts paid to payees were in BRL, and have been converted and reported in US dollars at an average exchange rate for 2024: $1 BRL = $0.1856 USD | <sup>1</sup> All amounts paid to payees were in BRL, and have been converted and reported in US dollars at an average exchange rate for 2024: $1 BRL = $0.1856 USD | <sup>1</sup> All amounts paid to payees were in BRL, and have been converted and reported in US dollars at an average exchange rate for 2024: $1 BRL = $0.1856 USD | <sup>1</sup> All amounts paid to payees were in BRL, and have been converted and reported in US dollars at an average exchange rate for 2024: $1 BRL = $0.1856 USD | <sup>1</sup> All amounts paid to payees were in BRL, and have been converted and reported in US dollars at an average exchange rate for 2024: $1 BRL = $0.1856 USD | <sup>1</sup> All amounts paid to payees were in BRL, and have been converted and reported in US dollars at an average exchange rate for 2024: $1 BRL = $0.1856 USD | <sup>1</sup> All amounts paid to payees were in BRL, and have been converted and reported in US dollars at an average exchange rate for 2024: $1 BRL = $0.1856 USD | <sup>1</sup> All amounts paid to payees were in BRL, and have been converted and reported in US dollars at an average exchange rate for 2024: $1 BRL = $0.1856 USD | <sup>1</sup> All amounts paid to payees were in BRL, and have been converted and reported in US dollars at an average exchange rate for 2024: $1 BRL = $0.1856 USD |

---

## Exhibit 2.01

```

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<!--XBRL document created with Toppan Merrill Bridge  11.0.0.3 -->
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<!--Created on: 8/22/2025 9:07:05 PM-->
<!--Modified on: 8/22/2025 9:07:05 PM-->
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          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ero_TucumaMember" xlink:to="ero_TucumaMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ero_TucumaMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">NA</label>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ero_TucumaMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tucuma [Member]</label>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ero_TucumaMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tucuma</label>
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          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ero_XavantinaMember" xlink:to="ero_XavantinaMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ero_XavantinaMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">NA</label>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ero_XavantinaMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Xavantina [Member]</label>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ero_XavantinaMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Xavantina</label>
          <loc xlink:type="locator" xlink:href="#ero_AvMineracaoMember" xlink:label="ero_AvMineracaoMember" xmlns="http://www.xbrl.org/2003/linkbase" />
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ero_AvMineracaoMember" xlink:to="ero_AvMineracaoMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ero_AvMineracaoMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">NA</label>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ero_AvMineracaoMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AV Mineracao [Member]</label>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ero_AvMineracaoMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">AV Mineracao</label>
          <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_BR" xlink:label="country_BR" xmlns="http://www.xbrl.org/2003/linkbase" />
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="country_BR" xlink:to="country_BR_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="country_BR_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">BRAZIL</label>
          <loc xlink:type="locator" xlink:href="#ero_FederalGovernmentOfBrazilTaxAuthorityMember" xlink:label="ero_FederalGovernmentOfBrazilTaxAuthorityMember" xmlns="http://www.xbrl.org/2003/linkbase" />
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ero_FederalGovernmentOfBrazilTaxAuthorityMember" xlink:to="ero_FederalGovernmentOfBrazilTaxAuthorityMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ero_FederalGovernmentOfBrazilTaxAuthorityMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for Federal Government of Brazil, Tax Authority.</label>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ero_FederalGovernmentOfBrazilTaxAuthorityMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Federal Government Of Brazil Tax Authority [Member]</label>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ero_FederalGovernmentOfBrazilTaxAuthorityMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Federal Government of Brazil, Tax Authority</label>
          <loc xlink:type="locator" xlink:href="#ero_FederalGovernmentOfBrazilNationalMiningAgencyMember" xlink:label="ero_FederalGovernmentOfBrazilNationalMiningAgencyMember" xmlns="http://www.xbrl.org/2003/linkbase" />
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ero_FederalGovernmentOfBrazilNationalMiningAgencyMember" xlink:to="ero_FederalGovernmentOfBrazilNationalMiningAgencyMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ero_FederalGovernmentOfBrazilNationalMiningAgencyMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for Federal Government of Brazil, National Mining Agency.</label>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ero_FederalGovernmentOfBrazilNationalMiningAgencyMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Federal Government of Brazil, National Mining Agency [Member]</label>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ero_FederalGovernmentOfBrazilNationalMiningAgencyMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Federal Government of Brazil, National Mining Agency</label>
          <loc xlink:type="locator" xlink:href="#ero_MunicipalGovernmentOfTucumaCityHallMember" xlink:label="ero_MunicipalGovernmentOfTucumaCityHallMember" xmlns="http://www.xbrl.org/2003/linkbase" />
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ero_MunicipalGovernmentOfTucumaCityHallMember" xlink:to="ero_MunicipalGovernmentOfTucumaCityHallMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ero_MunicipalGovernmentOfTucumaCityHallMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for Municipal Government of Tucuma, City Hall.</label>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ero_MunicipalGovernmentOfTucumaCityHallMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Municipal Government of Tucuma, City Hall [Member]</label>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ero_MunicipalGovernmentOfTucumaCityHallMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Municipal Government of Tucuma, City Hall</label>
          <loc xlink:type="locator" xlink:href="#ero_StateGovernmentOfMatoGrossoTaxAuthorityMember" xlink:label="ero_StateGovernmentOfMatoGrossoTaxAuthorityMember" xmlns="http://www.xbrl.org/2003/linkbase" />
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ero_StateGovernmentOfMatoGrossoTaxAuthorityMember" xlink:to="ero_StateGovernmentOfMatoGrossoTaxAuthorityMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ero_StateGovernmentOfMatoGrossoTaxAuthorityMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for State Government of Mato Grosso, Tax Authority.</label>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ero_StateGovernmentOfMatoGrossoTaxAuthorityMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">State Government of Mato Grosso, Tax Authority [Member]</label>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ero_StateGovernmentOfMatoGrossoTaxAuthorityMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">State Government of Mato Grosso, Tax Authority</label>
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          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="ero_StateGovernmentOfParaTaxAuthorityMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for State Government of Para, Tax Authority.</label>
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          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ero_StateGovernmentOfParaTaxAuthorityMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">State Government of Para, Tax Authority</label>
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          <link:loc xlink:type="locator" xlink:href="#ero_CaraibaMember" xlink:label="ero_CaraibaMember" xlink:title="ero_CaraibaMember" />
          <link:definitionArc xlink:type="arc" xlink:from="rxp_AllProjectsMember" xlink:to="ero_CaraibaMember" use="optional" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:title="definition:rxp_AllProjectsMember To ero_CaraibaMember" order="1" priority="0" />
          <link:loc xlink:type="locator" xlink:href="#ero_TucumaMember" xlink:label="ero_TucumaMember" xlink:title="ero_TucumaMember" />
          <link:definitionArc xlink:type="arc" xlink:from="rxp_AllProjectsMember" xlink:to="ero_TucumaMember" use="optional" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:title="definition:rxp_AllProjectsMember To ero_TucumaMember" order="2" priority="0" />
          <link:loc xlink:type="locator" xlink:href="#ero_XavantinaMember" xlink:label="ero_XavantinaMember" xlink:title="ero_XavantinaMember" />
          <link:definitionArc xlink:type="arc" xlink:from="rxp_AllProjectsMember" xlink:to="ero_XavantinaMember" use="optional" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:title="definition:rxp_AllProjectsMember To ero_XavantinaMember" order="3" priority="0" />
          <link:loc xlink:type="locator" xlink:href="#ero_AvMineracaoMember" xlink:label="ero_AvMineracaoMember" xlink:title="ero_AvMineracaoMember" />
          <link:definitionArc xlink:type="arc" xlink:from="rxp_AllProjectsMember" xlink:to="ero_AvMineracaoMember" use="optional" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:title="definition:rxp_AllProjectsMember To ero_AvMineracaoMember" order="4" priority="0" />
        </link:definitionLink>
        <link:definitionLink xlink:role="http://xbrl.sec.gov/rxp/role/GovernmentsOnly" xlink:type="extended" xlink:title="Government Only">
          <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/rxp/2025/rxp-2025.xsd#rxp_AllGovernmentsMember" xlink:label="rxp_AllGovernmentsMember" xlink:title="rxp_AllGovernmentsMember" />
          <link:loc xlink:type="locator" xlink:href="#ero_FederalGovernmentOfBrazilTaxAuthorityMember" xlink:label="ero_FederalGovernmentOfBrazilTaxAuthorityMember" xlink:title="ero_FederalGovernmentOfBrazilTaxAuthorityMember" />
          <link:definitionArc xlink:type="arc" xlink:from="rxp_AllGovernmentsMember" xlink:to="ero_FederalGovernmentOfBrazilTaxAuthorityMember" use="optional" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:title="definition:rxp_AllGovernmentsMember To ero_FederalGovernmentOfBrazilTaxAuthorityMember" order="1" priority="0" />
          <link:loc xlink:type="locator" xlink:href="#ero_FederalGovernmentOfBrazilNationalMiningAgencyMember" xlink:label="ero_FederalGovernmentOfBrazilNationalMiningAgencyMember" xlink:title="ero_FederalGovernmentOfBrazilNationalMiningAgencyMember" />
          <link:definitionArc xlink:type="arc" xlink:from="rxp_AllGovernmentsMember" xlink:to="ero_FederalGovernmentOfBrazilNationalMiningAgencyMember" use="optional" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:title="definition:rxp_AllGovernmentsMember To ero_FederalGovernmentOfBrazilNationalMiningAgencyMember" order="2" priority="0" />
          <link:loc xlink:type="locator" xlink:href="#ero_MunicipalGovernmentOfTucumaCityHallMember" xlink:label="ero_MunicipalGovernmentOfTucumaCityHallMember" xlink:title="ero_MunicipalGovernmentOfTucumaCityHallMember" />
          <link:definitionArc xlink:type="arc" xlink:from="rxp_AllGovernmentsMember" xlink:to="ero_MunicipalGovernmentOfTucumaCityHallMember" use="optional" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:title="definition:rxp_AllGovernmentsMember To ero_MunicipalGovernmentOfTucumaCityHallMember" order="3" priority="0" />
          <link:loc xlink:type="locator" xlink:href="#ero_StateGovernmentOfMatoGrossoTaxAuthorityMember" xlink:label="ero_StateGovernmentOfMatoGrossoTaxAuthorityMember" xlink:title="ero_StateGovernmentOfMatoGrossoTaxAuthorityMember" />
          <link:definitionArc xlink:type="arc" xlink:from="rxp_AllGovernmentsMember" xlink:to="ero_StateGovernmentOfMatoGrossoTaxAuthorityMember" use="optional" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:title="definition:rxp_AllGovernmentsMember To ero_StateGovernmentOfMatoGrossoTaxAuthorityMember" order="4" priority="0" />
          <link:loc xlink:type="locator" xlink:href="#ero_StateGovernmentOfParaTaxAuthorityMember" xlink:label="ero_StateGovernmentOfParaTaxAuthorityMember" xlink:title="ero_StateGovernmentOfParaTaxAuthorityMember" />
          <link:definitionArc xlink:type="arc" xlink:from="rxp_AllGovernmentsMember" xlink:to="ero_StateGovernmentOfParaTaxAuthorityMember" use="optional" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:title="definition:rxp_AllGovernmentsMember To ero_StateGovernmentOfParaTaxAuthorityMember" order="5" priority="0" />
        </link:definitionLink>
      </link:linkbase>
    </xsd:appinfo>
  </xsd:annotation>
  <xsd:import namespace="http://xbrl.sec.gov/country/2025" schemaLocation="https://xbrl.sec.gov/country/2025/country-2025.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/dei/2025" schemaLocation="https://xbrl.sec.gov/dei/2025/dei-2025.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" />
  <xsd:import namespace="http://www.xbrl.org/dtr/type/2024-01-31" schemaLocation="https://www.xbrl.org/dtr/type/2024-01-31/types.xsd" />
  <xsd:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/rxp/2025" schemaLocation="https://xbrl.sec.gov/rxp/2025/rxp-2025.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/snj/2025" schemaLocation="https://xbrl.sec.gov/snj/2025/snj-2025.xsd" />
  <xsd:element name="CaraibaMember" id="ero_CaraibaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="TucumaMember" id="ero_TucumaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="XavantinaMember" id="ero_XavantinaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="AvMineracaoMember" id="ero_AvMineracaoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="FederalGovernmentOfBrazilTaxAuthorityMember" id="ero_FederalGovernmentOfBrazilTaxAuthorityMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="FederalGovernmentOfBrazilNationalMiningAgencyMember" id="ero_FederalGovernmentOfBrazilNationalMiningAgencyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="MunicipalGovernmentOfTucumaCityHallMember" id="ero_MunicipalGovernmentOfTucumaCityHallMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="StateGovernmentOfMatoGrossoTaxAuthorityMember" id="ero_StateGovernmentOfMatoGrossoTaxAuthorityMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="StateGovernmentOfParaTaxAuthorityMember" id="ero_StateGovernmentOfParaTaxAuthorityMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
</xsd:schema>
</XBRL>

```