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Ero Copper Announces Voting Results of Annual General Meeting of Shareholders

Shareholder Meetings

April 24, 2025

Ero Copper Announces Voting Results of Annual General Meeting of Shareholders

Vancouver, British Columbia – Ero Copper Corp. (TSX: ERO, NYSE: ERO) ("Ero" or the

“Company”) reported the voting results from its Annual General Meeting of Shareholders

held today in Vancouver, British Columbia. A total of 88,486,748 common shares were

represented at the meeting, being 85.44% of the issued and outstanding common shares of

the Company as at the March 5, 2025 record date. Shareholders voted in favour of all items

of business before the meeting, including the re-election of management’s nominees as

directors for the ensuing year and the advisory vote on executive compensation. Detailed

results of the votes are presented below.

Each item of business voted upon at the meeting is described in detail in the Company's

Management Information Circular dated March 6, 2025 (the “Circular”), which is available on

the Company's website (www.erocopper.com), on SEDAR+ (www.sedarplus.ca/landingpage/)

and on EDGAR (www.sec.gov).

SET THE NUMBER OF DIRECTORS AT TEN

Shareholders approved the proposal to set the number of directors at ten with 99.68% of

votes cast in favour.

ELECTION OF DIRECTORS

Shareholders re-elected ten directors as follows:

Number of Common Shares Voted Percentage of Votes Cast

Director Nominee For Withheld For Withheld

David Strang 74,403,908 1,323,320 98.25% 1.75%

Makko DeFilippo 75,019,071 708,157 99.06% 0.94%

Jill Angevine 74,107,333 1,619,895 97.86% 2.14%

Lyle Braaten 73,343,218 2,384,010 96.85% 3.15%

Steven Busby 72,987,840 2,739,388 96.38% 3.62%

Dr. Sally Eyre 74,138,186 1,589,042 97.90% 2.10%

Robert Getz 73,295,009 2,432,219 96.79% 3.21%

Chantal Gosselin 74,213,975 1,513,253 98.00% 2.00%

Faheem Tejani 74,237,166 1,490,062 98.03% 1.97%

John Wright 74,238,750 1,488,478 98.03% 1.97%

TSX: ERO

NYSE: ERO

1 Ero Copper Corp

625 Howe Street | Suite 1050 | Vancouver | BC | V6C 2T6 | Canada

APPOINTMENT OF AUDITOR

Shareholders re-appointed KPMG LLP, Chartered Professional Accountants, as the auditor of

the Company and authorized the directors of the Company to fix the remuneration to be paid

to the auditor with 99.71% of votes cast in favour.

ADVISORY VOTE ON EXECUTIVE COMPENSATION

Shareholders approved the non-binding advisory “say on pay” resolution accepting the

Company’s approach to executive compensation as described in the Circular with 98.19% of

votes cast in favour.

ABOUT ERO COPPER CORP

Ero Copper is a high-margin, high-growth copper producer with operations in Brazil and

corporate headquarters in Vancouver, B.C. The Company's primary asset is a 99.6% interest

in the Brazilian copper mining company, Mineração Caraíba S.A. ("MCSA"), 100% owner of

the Company's Caraíba Operations, which are located in the Curaçá Valley, Bahia State,

Brazil, and the Tucumã Operation, an open pit copper mine located in Pará State, Brazil. The

Company also owns 97.6% of NX Gold S.A. ("NX Gold") which owns the Xavantina

Operations, an operating gold and silver mine located in Mato Grosso State, Brazil. In July

2024, the Company signed a definitive earn-in agreement with Vale Base Metals for a 60%

interest in the Furnas Copper-Gold Project, located in the Carajás Mineral Province in Pará

State, Brazil. For more information on the earn-in agreement, please see the Company's press

releases dated October 30, 2023 and July 22, 2024. Additional information on the Company

and its operations, including technical reports on the Caraíba Operations, Xavantina

Operations, Tucumã Operation and the Furnas Copper-Gold Project, can be found on the

Company’s website (www.erocopper.com), on SEDAR+ (www.sedarplus.ca/landingpage/)

and on EDGAR (www.sec.gov). The Company’s shares are publicly traded on the Toronto

Stock Exchange and the New York Stock Exchange under the symbol “ERO”.

FOR MORE INFORMATION, PLEASE CONTACT

Courtney Lynn, Executive Vice President, External Affairs and Strategy

(604) 335-7504

[email protected]

TSX: ERO

NYSE: ERO

2 Ero Copper Corp

625 Howe Street | Suite 1050 | Vancouver | BC | V6C 2T6 | Canada