Fortuna expands Indicated Mineral Resource by 73% to 1.25 million gold ounces, Diamba Sud Project, Senegal

Fortuna Mining Corp. has delivered a landmark update to its Diamba Sud Gold Project in Senegal, dramatically expanding its Indicated Mineral Resources by 73% to 1.25 million ounces of gold. This strategic advancement signals a potential game-changer for the company's growth trajectory in the precious metals sector.

The resource expansion, effective January 16, 2026, represents a significant milestone for Fortuna, with CEO Jorge A. Ganoza highlighting the critical importance of this update. By elevating 94% of total gold ounces to the indicated category, the company has substantially improved project confidence and set the stage for a comprehensive feasibility study targeted for mid-2026.

Key technical achievements include the first-time estimation of the Southern Arc deposit, which now comprises 6.0 million tonnes averaging 1.91 g/t Au and containing 367,000 ounces of gold. This deposit has emerged as the largest discovered to date at the Diamba Sud project, underscoring the region's substantial mineral potential.

For precious metals investors, this update represents more than a simple resource increment. It demonstrates Fortuna's strategic commitment to methodical resource development, with ongoing exploration drilling continuously intersecting mineralization beyond current resource envelopes. The company's explicit goal of becoming a 500,000-ounce annual gold producer signals ambitious yet calculated growth.

The market implications are profound. By systematically upgrading resources through targeted infill drilling at multiple deposits including Area D, Southern Arc, Moungoundi, and Karakara, Fortuna is positioning itself as a nimble, growth-oriented precious metals producer. The technical studies advancing toward Mineral Reserves estimation suggest a clear pathway to potential production.

As global demand for gold continues to evolve amid geopolitical uncertainties and inflationary pressures, projects like Diamba Sud represent critical additions to the global supply pipeline. Investors should closely monitor Fortuna's progress toward its feasibility study and subsequent development decisions.