Commercial Production Achieved At The Tucumã Operation

VANCOUVER – Ero Copper Corp. reported that the Tucumã Operation, located in Pará State, Brazil, achieved commercial production. During the month of June, following the completion of commissioning of the third filter press as well as modifications to the process plant, the operation achieved sustained throughput levels exceeding 75% of design capacity.

“The achievement of commercial production at Tucumã reflects the resilience of our organization over the past several months,” said Makko DeFilippo, President and Chief Executive Officer. “We have worked diligently to improve performance at Tucumã, completing necessary repairs and modifications to the process plant to achieve and maintain performance targets. As we move through the balance of 2025, we are focused on delivering safe, consistent production growth, generating strong free cash flows, and investing in the future growth potential we see in the Furnas Project.”

Copper production at Tucumã totaled approximately 6,400 tonnes during the second quarter, including approximately 2,000 tonnes of copper produced during the second half of June. Metallurgical recovery rates and copper concentrate grades have continued to meet or exceed design targets. The Company expects plant throughput volumes to continue increasing through year-end, supporting sequential growth in copper production during the second half of the year.