Alamos Gold Reports Mineral Reserves and Resources for the Year-Ended 2025
Press Release
Global Mineral Reserves Increase 32% with Grades also Increasing 5%, Driven by 125% Growth in High-Grade Mineral Reserves at Island Gold
All amounts are in United States dollars, unless otherwise stated.
TORONTO, Feb. 17, 2026 — Alamos Gold Inc. (TSX:AGI; NYSE:AGI) (“Alamos” or the “Company”) today reported its updated Mineral Reserves and Resources as of December 31, 2025. For a detailed summary by asset, refer to the tables below.
Highlights
- Global Proven and Probable Mineral Reserves increased 32% to 15.9 million ounces of gold (265 million tonnes (“mt”)) with grades also increasing 5% to 1.87 grams per tonne of gold (“g/t Au”). This was driven by the successful conversion of a large portion of the Island Gold District’s Mineral Resource base into Mineral Reserves
- Island Gold’s Mineral Reserves more than doubled, increasing 125% to 5.1 million ounces (15.1 mt grading 10.61 g/t Au), reflecting the conversion of existing and newly defined Mineral Resources to Mineral Reserves
- Magino’s Mineral Reserves increased 56% to 3.1 million ounces (113 mt grading 0.86 g/t Au), primarily reflecting the successful conversion of Mineral Resources to Mineral Reserves
- Global Measured and Indicated Mineral Resources increased 6% to 5.5 million ounces of gold (119 mt grading 1.44 g/t Au), driven by additions at Young-Davidson, Lynn Lake and Mulatos, more than offsetting Mineral Resource conversion at Magino
- Global Inferred Mineral Resources decreased 63% to 2.0 million ounces of gold (35.0 mt grading 1.82 g/t Au), reflecting the successful conversion of Inferred Mineral Resources at both Island Gold and Magino to Mineral Reserves
- Gold price assumption of $1,800 per ounce used for estimating Mineral Reserves and $2,000 per ounce for estimating Mineral Resources, up from $1,600 and $1,800 per ounce, respectively, in 2024, reflecting the significantly higher gold price environment. Both remain conservative relative to the three-year trailing average gold price of approximately $2,592 per ounce
- Record global exploration budget of $97 million in 2026, up 37% from the $71 million spent in 2025 with expanded programs at the Island Gold District, Young-Davidson and Lynn Lake. The expanded exploration budget is underpinned by broad-based success across the Company’s asset base in 2025
“Our long-term investment in exploration continues to create value with another substantial increase in Mineral Reserves to 16 million ounces, and at higher grades. The majority of this growth was within the Island Gold District, with the larger Mineral Reserve serving as the foundation for the Island Gold District Expansion announced earlier this month. This marks the seventh consecutive year of growth, with grades increasing 24% over that time frame as our Reserves continue to grow in both size and quality. We also demonstrated significant exploration success across our asset base over the past year. We expect this ongoing success will serve as the foundation for further Mineral Reserve and Resource growth in the years ahead with a record exploration budget of nearly $100 million planned for 2026,” said John A. McCluskey, President and Chief Executive Officer.
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