Fortuna drills 4.5 g/t Au over 37.4 meters at Kingfisher and 11.2 g/t Au over 5.6 meters at Sunbird, Seguela Mine, Cote d'Ivoire

Executive Summary

• Fortuna Mining reported extensive high‑grade gold intercepts from both the Kingfisher and Sunbird deposits, including several >10 g/t Au intervals and a new deepest drill hole (SGRD2501) reaching 455 m depth.
• The infill and extension program added 78 new holes (13,262 m) at Kingfisher and 41 holes (17,532 m) at Sunbird, confirming the broad nature of mineralization and expanding the strike‑length and down‑plunge potential.
• Mineralization remains open both laterally and at depth for both deposits, supporting continued drilling through 2025 to further define resources.

Key Details

• Kingfisher Deposit Highlights
• Hole SGRD2313: 9.4 g/t Au over 17.0 m (incl. 58.1 g/t Au over 0.9 m).
• Hole SGRD2349: 5.6 g/t Au over 22.1 m (incl. 63.1 g/t Au over 0.9 m).
• Hole SGRD2363: 4.5 g/t Au over 37.4 m (incl. 28.4 g/t Au over 0.9 m).
• Hole SGRD2366: 4.4 g/t Au over 20.4 m (incl. 48.9 g/t Au over 0.9 m).
• Deepest hole to date – SGRD2501 at 455 m depth, intersecting 12.7 g/t Au over 0.9 m within a broader 1.6 g/t Au over 9.4 m interval from 362 m depth (≈300 m vertical).

• Total of 78 holes / 13,262 m completed as part of the resource confidence infill and extension program; drilling continues through 2025.

• Sunbird Deposit Highlights

• Hole SGRD2219: 12.2 g/t Au over 4.9 m (incl. 37.8 g/t Au over 1.4 m).
• Hole SGRD2406: 25.2 g/t Au over 2.1 m.
• Hole SGRD2407: 9.1 g/t Au over 5.6 m (incl. 52.5 g/t Au over 0.7 m).
• Hole SGRD2409: 11.2 g/t Au over 5.6 m (incl. 24.6 g/t Au over 2.1 m).
• Hole SGRD2431: 8.5 g/t Au over 7.0 m (incl. 53.3 g/t Au over 0.7 m).
• Near‑surface shallow intercepts: 2.1 g/t Au over 8.4 m from 32 m depth (SGRD2418) and 5.6 g/t Au over 4.9 m from 98 m depth (SGRD2422).
• Mineralization now extends >1.1 km down‑plunge, ~700 m below surface; high‑grade shoot continues at least 800 m down‑plunge.

• Total of 41 holes / 17,532 m completed; drilling scheduled to continue until end‑2025.

• Overall Program

• Infill and extension drilling aimed at upgrading resource confidence for ~600 m strike length (Kingfisher) and extending the down‑plunge envelope ~300 m further south (Sunbird).
• Both deposits show open mineralization at depth and along strike, supporting future resource expansion.

Notable Quotes

• Paul Weedon, SVP Exploration – “A successful infill drill program was completed at Kingfisher… extending the strike and depth,” and “Deep exploration drilling testing the southern extent of Sunbird has continued to return excellent results while upgrading geological confidence.”