Ero Copper Corp. Furnas Copper-Gold Project Drilling Update

Ero Copper Corp. announced significant exploration drilling results at its Furnas Copper-Gold Project in Brazil. The drilling program, which has exceeded 75,000 meters, has confirmed high-grade copper, gold, and silver mineralization continuity and extended known mineralization at depth and along strike. Key step-out intercepts include FURN-DD-00357 with 90 meters at 0.74% copper and 0.50 gpt gold, and FURN-DD-00354 with 45 meters at 0.98% copper and 0.36 gpt gold. Infill drilling results also show strong continuity within the SE and NW mineralized zones. The company is on track to earn a 60% interest in the project by year-end, ahead of schedule. Technical work streams, including permitting and studies for a Pre-Feasibility Study, are advancing, with the PFS expected in 2027. Value-enhancement opportunities, such as magnetic separation of tailings, are also being evaluated.