Ms. Courtney Lynn reports

ERO COPPER FILES TECHNICAL REPORT FOR THE FURNAS COPPER-GOLD PROJECT

Ero Copper Corp. has filed the technical report for the Furnas copper-gold project related to the initial National Instrument 43-101-compliant mineral resource estimate previously announced on Oct. 2, 2024.

The technical report was prepared in accordance with the Canadian Securities Administrators' National Instrument 43-101 (Standards of Disclosure for Mineral Projects), and can be found on the company's website and on SEDAR+. A copy of the technical report will also be filed on EDGAR.

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-per-cent interest in the Brazilian copper mining company Mineracao Caraiba SA, 100-per-cent owner of the company's Caraiba operations, which are located in the Curaca Valley, Bahia state, Brazil, and the Tucuma operation, an open-pit copper mine located in Para state, Brazil. The company also owns 97.6 per cent of NX Gold SA, 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-per-cent interest in the Furnas copper-gold project, located in the Carajas mineral province in Para state, Brazil. For more information on the earn-in agreement, please see the company's press releases dated Oct. 30, 2023, and July 22, 2024. Additional information on the company and its operations, including technical reports on the Caraiba operations, Xavantina operations, Tucuma operation and Furnas copper-gold project, can be found on the company's website, on SEDAR+ and on EDGAR. The company's shares are publicly traded on the Toronto Stock Exchange and the New York Stock Exchange under the symbol ERO.

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