EXHIBIT 99.1

Ero Copper Announces Voting Results of Annual General Meeting of Shareholders

VANCOUVER, British Columbia , April 24, 2025 (GLOBE NEWSWIRE) -- 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:

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
info@erocopper.com

EXHIBIT 99.2

REPORT ON VOTING RESULTS

In accordance with section 11.3 of National Instrument 51-102 – Continuous Disclosure Obligations, the following sets out the voting results on the items of business submitted at the Annual General Meeting of Shareholders (the “Meeting”) of Ero Copper Corp. (“Ero” or the “Company”) held on April 24, 2025 in Vancouver, British Columbia. Each item of business voted upon at the Meeting is described in detail in the 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).

The setting of the number of directors at ten was approved, and the outcome of the vote by ballot was as follows:

Each of the ten nominees in the Circular were re-elected as directors of the Company for the ensuing year, and the outcome of the vote by ballot was as follows:

KPMG LLP, Chartered Professional Accountants, was re-appointed as the auditor of the Company for the ensuing year, and the directors of the Company were authorized to fix the remuneration to be paid to the auditor, and the outcome of the vote by ballot was as follows:

Ero Copper Corp

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

The non-binding advisory “say on pay” resolution accepting the Company’s approach to executive compensation as described in the Circular was approved, and the outcome of the vote by ballot was as follows:

Dated this 24th day of April, 2025.

ERO COPPER CORP.

“Deepk Hundal”

Deepk Hundal

Executive Vice President, General Counsel and

Corporate Secretary

2

Ero Copper Corp

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