THE NEXT MID-TIER COPPER PRODUCER TSX ERO $18.90 NYSE ERO $14.72 COPPER PRICE $4.23/lb WELCOME TO ERO COPPER Ero Copper Corp is a base metals mining company featuring a peer-leading organic production growth profile via its 99.6% interest in Mineração Caraíba S.A. (“MCSA”), a long-established Brazilian copper mining company with over 40 years of operating history in the Curaçá Valley. MCSA’s primary assets are the fully integrated mining and processing operations of the MCSA Mining Complex, located in northeastern Bahia State, Brazil. Ero’s strategy is centered upon aggressively increasing high-grade mineral reserves, extending mine life and maximizing mill throughput. MCSA also owns 100% of the “turn key” Boa Esperanҫa development project, an IOCG-type copper deposit located in southern Pará State, Brazil. q MORE CORPORATE PRESENTATION FINANCIALS OPERATIONS RECENT NEWS 12 NOVEMBER 2021 Ero Copper Files Technical Report for Boa Esperança Project gMORE 10 NOVEMBER 2021 Ero Copper third quarter production and financial results continue to position the Company for growth gMORE 15 OCTOBER 2021 Ero Copper to Release Third Quarter 2021 Financial and Operating Results on November 10, 2021 gMORE 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 ANNUAL REPORTS 2020 Annual Report View PDF 2019 Annual Report View PDF 2018 Annual Report View PDF 2017 Annual Report 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 INVESTOR OVERVIEW TSX: ERO 1m3m6m1yYTDMAX STOCK INFO TSX: ERO PRICE $ CHANGE (%) VOLUME TIME SHARE STRUCTURE AS OF MAY 4, 2021 ISSUED & OUTSTANDING 88,154,409 52 WEEK RANGE $ - $ MARKET CAPITALIZATION NYSE: ERO STOCK INFO NYSE: ERO PRICE $ CHANGE (%) VOLUME TIME SHARE STRUCTURE AS OF MAY 4, 2021 ISSUED & OUTSTANDING 88,154,409 52 WEEK RANGE $ - $ MARKET CAPITALIZATION CORPORATE PRESENTATIONS FINANCIALS AGM REPORTS RECENT NEWS 12 NOVEMBER 2021 Ero Copper Files Technical Report for Boa Esperança Project gMORE 10 NOVEMBER 2021 Ero Copper third quarter production and financial results continue to position the Company for growth gMORE 15 OCTOBER 2021 Ero Copper to Release Third Quarter 2021 Financial and Operating Results on November 10, 2021 gMORE 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 CORPORATE POLICIES COMMITTEE MANDATES CONSTATING DOCUMENTS KEY POSITION DESCRIPTIONS CORPORATE GOVERNANCE EMAIL UPDATES SIGN UP © 2021 Ero Copper Corp. | Legal 1050 - 625 HOWE STREET VANCOUVER, BC V6C 2T6 CANADA Website by Adnet