Tocantinzinho

Tocantinzinho (“TZ”) is an operating conventional open pit and milling gold operation in the Tapajós district in Pará State, Brazil, owned and operated by G Mining. On February 9, 2022, G Mining published a positive feasibility study on TZ outlining an expected mine life of 10.5 years, with estimated annual gold production of 196 koz over the first five years at an estimated AISC of US$666 per ounce. TZ reached commercial production on September 3, 2024 and marked its first full year of commercial production in 2025, producing 171.9 koz of gold. In 2026, G Mining expects TZ gold production to be in the range of 160 to 190 koz, and 2027 production in the range of 200 to 235 koz of gold.

In 2025, G Mining completed roughly 21,659 meters of drilling and auger work at Tocantinzinho, focused on depth and northwest extensions plus nearby regional targets. South of the TZ pit, significant intercepts included hole BRZ-25-089A which returned 27.0 meters at 0.85 g/t Au and 23.0 meters at 0.91 g/t Au, confirming the presence of gold. For 2026, G Mining has guided approximately US$9 million of regional exploration at TZ.

Metalla accrued 1,293 GEOs from Tocantinzinho in 2025.