Detour DNA

Metalla owns a 2% NSR royalty to the west of the Detour Lake mine. Detour is a large open pit gold mine which has produced more than 5 Moz of gold since 1983. Agnico reported that Detour had 2025 gold production of 692,675 ounces and, as at December 31, 2025, hosted 18.6 Moz of gold in open pit Proven and Probable Mineral Reserves. Detour Lake’s greenstone-hosted orogenic gold mineralization straddles the Sunday Lake Deformation Zone, which extends 30 kilometres across the property.

Agnico previously announced high-grade underground drill results west of the West Detour pit and, in 2024, declared an initial underground inferred resource estimate of 1.56 Moz of gold at 2.23 g/t. In June 2024, Agnico released a proposed underground mining plan that adds approximately 4.0 Moz of gold to the production profile and extends mine life to 2054. In 2026, Agnico has budgeted 175,000 metres of drilling at Detour Lake, including 165,000 metres of capitalized drilling to continue converting inferred resources and testing the western extension of the orebody, as well as 10,000 metres of regional drilling on the broader property.