lAMGOLD Reports Mineral Resources and Reserves for the Year Ended 2025
Press Release
All amounts are in US dollars, unless otherwise indicated.
Measured and indicated resources are quoted inclusive of proven and probable reserves for all sites
Toronto, Ontario–(- February 17, 2026) – IAMGOLD Corporation (NYSE: IAG) (TSX: IMG) (“IAMGOLD” or the “Company”) announces its updated Mineral Resources and Mineral Reserves statement as of December 31, 2025 prepared in accordance with National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101”). A summary table of the Company’s Mineral Resources and Mineral Reserves, including attributable ounces accounting for ownership interest, can be found at the end of this news release.
Highlights
- Proven and Probable (“P&P”) Mineral Reserves (100% basis) total 9.9 million ounces of gold in 279.6 Mt at 1.10 g/t Au (7.5 million ounces attributable). P&P Mineral Reserves decreased 7%, or 796,000 ounces, from the year prior, primarily due to depletion at Côté Gold and Essakane partially offset by an increase in Mineral Reserves at Westwood.
- Measured and Indicated (“M&I”) Mineral Resources (100% basis) increased 16% to 31.0 million ounces of gold in 1.0 Bt at 0.94 g/t Au (24.6 million ounces attributable). The increase was primarily associated with the conversion of Inferred Mineral Resources in the Gosselin deposit at Côté Gold and Nelligan deposit, coupled with the inclusion of the Philibert and Chevrier deposits as part of the Northern Superior transaction towards the end of the year.
- Côté Gold (Côté and Gosselin) M&I Mineral Resources, inclusive of Mineral Reserves and on a 100% basis, increased 12%, or approximately 2.0 million ounces, to an estimated 18.2 million ounces (12.7 million ounces attributable) as of December 31, 2025. Inferred Mineral Resources decreased approximately 2.0 million ounces to 2.2 million ounces.
- Essakane M&I Mineral Resources (excluding Gossey), inclusive of Mineral Reserves and on a 100% basis, increased 11% to an estimated 4.4 million ounces (3.8 million ounces attributable) as of December 31, 2025, with a 50% increase in tonnes (to 150 Mt) offsetting a 26% decrease in grades (to 0.91 g/t Au, including stockpiles). The increase in tonnes and ounces underscores confidence in the potential for Essakane to extend its mine life within the fence beyond current guidance.
- Westwood M&I Mineral Resources, inclusive of Mineral Reserves, increased 682,000 ounces to 2.4 million ounces as of December 31, 2025, with a 79% increase in tonnes (to 11.9 Mt) offsetting a 22% decrease in average grade to 6.24 g/t Au.
- Inferred Mineral Resources (100% basis) decreased 2% to 12.5 million ounces (11.3 million ounces attributable).
- Gold price assumptions for Mineral Reserves were updated to $2,000 per ounce for Westwood (including Grand Duc) and Essakane; and $1,700 per ounce for Côté Gold. 2025 Mineral Resources were updated using a gold price of: $2,500 per ounce for Essakane, Westwood (incl. Grand Duc), Nelligan, Monster Lake and Gossey; and $2,100/oz for Côté.
“I want to congratulate our exploration teams for their continued success in expanding our resource base. IAMGOLD today has 31 million ounces in Measured and Indicated Resources along with an additional 12.5 million ounces of Inferred Mineral Resources, positioning the company among the largest endowments of gold resources among mid-tier gold producers,” said Renaud Adams, President and Chief Executive Officer of IAMGOLD. “Further, approximately 80% of our Measured and Indicated ounces and 90% of global Inferred ounces are located in Canada – reinforcing IAMGOLD as a leading Canadian, modern multi-asset mid-tier gold producer with significant growth potential.”
“As we look at our operations, all eyes this year will be on Côté Gold, as our exploration and site teams are working tirelessly towards the technical report to be delivered in the fourth quarter which will outline a mine plan incorporating a plant expansion that will leverage a larger subset of ounces from the combined Côté and Gosselin pits. At Westwood, exploration activities will be conducted to support the study of options to expand the mine in the eastern parts of Westwood underground that could be potentially amenable to bulk mining. Additional extensions to the Grand Duc pit will also be investigated this year. At Essakane, the Mineral Resource tonnes increased 50% building confidence in the potential for the project to see a mine life extension beyond the current mine plan.”
“It is going to be an exciting year at our Nelligan Mining Complex in the Chibougamau-Chapais region of Quebec, as we build on our acquisitions at the end of last year of Northern Superior and Orbec, which significantly increased our property package and the potential of the consolidated camp. This year we are substantially increasing our budget to $24 million for a comprehensive exploration program. The Nelligan Mining Complex already has a significant mineral inventory of over 4.3 million Measured and Indicated ounces and 7.5 million Inferred ounces, positioning the project among the largest pre-production stage gold projects in Canada. The exploration program this year will look to expand the mineralized footprint of both Nelligan and Philibert, while testing Monster Lake at depth, and then conducting regional exploration on high priority targets to further grow the potential of the project.”
IBF4
