INVESTORS OVERVIEW PRESENTATIONS ANALYST COVERAGE FINANCIALS ANNUAL REPORTS ESTMA EVENTS AGM MATERIALS CORPORATE GOVERNANCE AGM MATERIALS TUESDAY, MAY 4, 2021, 4:00 P.M. PACIFIC TIME VIRTUAL-ONLY FORMAT CONDUCTED VIA LIVE AUDIO TELECONFERENCE Notice of Meeting View PDF Management Information Circular View PDF EMAIL UPDATES SIGN UP © 2021 Ero Copper Corp. | Legal 1050 - 625 HOWE STREET VANCOUVER, BC V6C 2T6 CANADA Website by Adnet

INVESTORS OVERVIEW PRESENTATIONS ANALYST COVERAGE FINANCIALS ANNUAL REPORTS ESTMA EVENTS AGM MATERIALS CORPORATE GOVERNANCE FINANCIALS 2021 2020 2019 2018 2017 Third Quarter Results for the period ended September 30, 2021 FS MDA Second Quarter Results for the period ended June 30, 2021 FS MDA First Quarter Results for the period ended March 31, 2021 FS MDA EMAIL UPDATES SIGN UP © 2021 Ero Copper Corp. | Legal 1050 - 625 HOWE STREET VANCOUVER, BC V6C 2T6 CANADA Website by Adnet

INVESTORS OVERVIEW PRESENTATIONS ANALYST COVERAGE FINANCIALS ANNUAL REPORTS ESTMA EVENTS AGM MATERIALS CORPORATE GOVERNANCE EVENTS UPCOMING EVENTS There are currently no upcoming events. Check back soon to see where Ero Copper Corp. will be presenting next. PAST EVENTS 2020 2019 2018 EMAIL UPDATES SIGN UP © 2021 Ero Copper Corp. | Legal 1050 - 625 HOWE STREET VANCOUVER, BC V6C 2T6 CANADA Website by Adnet

INVESTORS OVERVIEW PRESENTATIONS ANALYST COVERAGE FINANCIALS ANNUAL REPORTS ESTMA EVENTS AGM MATERIALS CORPORATE GOVERNANCE PRESENTATIONS November 2021 Corporate Presentation Click here to download the slides in PDF format Notes: Scientific and technical information contained in this presentation has been reviewed and approved by Emerson Ricardo Re, Resource Manager. Mr. Re is an employee of Ero and Qualified Person” as defined by Canadian Securities Administrators’ National Instrument 43-101 - Standards of Disclosure for Mineral Projects. Mineral resources shown within the three-dimensional (“3D”) model portion of this presentation are as outlined in the Company’s 2020 Technical Report. Mineral resources shown inclusive of mineral reserves. Mineral resources which are not mineral reserves do not have demonstrated economic viability. Drill hole information including mineralized intercepts shown within the 3D model portion of this presentation is as outlined in the Company’s news releases published on the Company’s website (www.erocopper.com) and on SEDAR (http://www.sedar.com). Where applicable, exploration target projection(s) are shown to demonstrate future area of exploration focus within the Company’s operations. These projections are based on data compilation work which includes review of geological controls, structural analysis and copper mineralization identified during the Company’s technical programs. The interpretation and boundary limits do not imply continuity of mineralization, or actual thickness of mineralization which has yet to be defined. EMAIL UPDATES SIGN UP © 2021 Ero Copper Corp. | Legal 1050 - 625 HOWE STREET VANCOUVER, BC V6C 2T6 CANADA Website by Adnet