Aris Mining Reports Strong PFS for Toroparu Gold Project

Overview of the Toroparu Gold Project

Aris Mining Corporation has shared encouraging findings from the recently completed Prefeasibility Study (PFS) for its Toroparu Gold Project located in Guyana. The study forecasts a substantial and sustainable open-pit mining operation, projected to yield approximately 5.6 million ounces of gold over a lengthy 29-year lifespan, with active mining expected to last for 21 of those years.

Project Development Strategy

Following the completion of the PFS, Aris Mining is moving closer to making a key construction decision, aimed for early 2027. This timeline is contingent upon obtaining the necessary regulatory approvals. The PFS emphasizes the use of contractor mining and integrates various engineering and construction methods while also allowing for some self-performed tasks.

Neil Woodyer, the Company’s CEO, noted that the findings position Toroparu as a pivotal growth opportunity for Aris Mining. The PFS confirms a project with robust economics and a larger mineral resource compared to the previous 2025 Preliminary Economic Assessment (PEA).

Mineral Reserves and Resources

Significant updates from the PFS include:

• Total Proven and Probable Reserves: 5.1 million ounces of gold at a grade of 1.18 grams per tonne (g/t), plus an additional 0.9 million ounces at 0.40 g/t, bringing total reserves to 5.9 million ounces.
• Increased Mineral Resources: Measured and indicated resources have risen to 9.3 million ounces, a 74% increase compared to the 2025 PEA. Inferred resources also saw a 115% rise, now standing at 1.4 million ounces.

Financial Highlights

The projected production during the project's life includes:

• Average annual gold production of 291 thousand ounces during the first five years.
• Planned average annual output of 258 thousand ounces during the initial 17 years of active mining, tapering to 103 thousand ounces in the later years as mining progresses into stockpile processing.

Financially, the project requires an initial investment of about $1.005 billion. It is anticipated to provide solid base case economics based on a gold price of $3,600 per ounce, projecting revenues of around $19.9 billion throughout the operational life, alongside $1.3 billion from copper and silver by-products.

Future Prospects

As the project advances toward a construction decision, Aris Mining is also intensifying its preparations by expanding its team in Guyana and progressing with engineering and pre-construction tasks. The PFS signifies Toroparu’s potential as Aris Mining's cornerstone asset, with the aim of establishing a significant gold production operation in South America.

For detailed technical findings, the full report adhering to National Instrument 43-101 standards has been made available on Aris Mining's website, along with submissions to relevant regulatory bodies.