Mr. Wesley Whymark reports

INVENTUS REPORTS UP TO 75% GOLD RECOVERY FROM HEAP LEACH TESTWORK AT PARDO

Inventus Mining Corp. has released positive metallurgical heap-leach test results completed on material from the company's 100-per-cent-owned Pardo River of Gold project, located 65 kilometres northeast of Sudbury, Ont. The program evaluated gold recovery across multiple crush sizes and leach durations and provides a technical basis for detailed testing and potential integration as a future processing strategy.

Highlights:

• Column leach recoveries ranged from 66.9 per cent to 74.5 per cent after 78 days at crush sizes of minus 1/2 inch, minus 3/8ths inch and minus 1/4 inch;
• The minus-1/4-inch column recovered 64.3 per cent in 27 days, 72.0 per cent in 48 days and 74.5 per cent after 78 days, identifying an initial 27-to-48-day optimization window for further testing;
• The minus-1/4-inch column had a favourable reagent profile with low total cyanide consumption of 1.14 kilograms per tonne over 78 days and required no lime addition to maintain optimal leach pH above 10.5;
• A potential heap-leach processing concept.

Wesley Whymark, chief executive officer and director, commented: "These results are very encouraging, demonstrating that Pardo mineralization is responsive to cyanide leaching and, importantly, that recovery is front loaded. At a minus-1/4-inch crush, 72 per cent of the gold was recovered in 48 days. This gives us a clear starting point to optimize cycle time, crush size and reagent consumption.

"The most compelling opportunity is how leaching could fit into a broader and flexible processing strategy at Pardo. We are evaluating ore sorting to produce a smaller-volume, higher-grade product for transport to an existing mill. The lower-grade fraction could potentially remain on site for lower-cost heap-leaching rather than being hauled and conventionally milled. Our next step is to directly test different lower-grade mineralization and sorter products and use those results to guide future economic studies."

Heap-leach test results

Process Mineralogical Consulting Ltd. (PMC), a mineral processing and metallurgical testing laboratory, tested a 310-kilogram composite of Trench 1 bulk sample material. Three columns containing approximately 59 to 65 kg of material were prepared at crush sizes of minus 1/4 inch, minus 3/8ths inch and minus 1/2 inch. The columns were leached for 78 days using a 0.5-gram-per-litre sodium cyanide solution applied at a standard laboratory flow rate. The calculated head grades ranged from 1.51 to 2.69 grams per tonne gold, with results presented in Table 1 below.

The minus-1/4-inch column demonstrated the clearest indication of a potential optimized heap-leach cycle. Recovery increased to 64.3 per cent by day 27 and 72.0 per cent by day 48, then increased more gradually to 74.5 per cent by day 78. Based on the current laboratory data, a 27-to-48-day cycle is an initial target for optimization. Results showed that 86 per cent to 92 per cent of the unrecovered gold in the column residues was contained in the coarse fraction, indicating that gold liberation and solution access are important controls. PMC concluded that heap leaching may not be the preferred route for the tested higher-grade composite where maximum recovery is the objective. PMC also noted that the performance of this higher-grade composite cannot be used to predict the response of a lower-grade feed, which must be tested directly.

Potential integrated processing concept

Inventus believes the results support evaluating a flexible two-product processing approach rather than applying a single recovery method to all material. Under the concept being evaluated, crushed material would be ore sorted to produce a smaller-volume, higher-grade product for transport to an existing mill. A lower-grade fraction could be retained at site and processed by heap leaching if direct test work demonstrates acceptable recovery, permeability and reagent consumption.

The concept could reduce the tonnes transported and conventionally milled while preserving the potential value of lower-grade material. This conceptual flow sheet has not yet been supported by an economic study and remains subject to metallurgical testing, engineering, permitting and economic analysis.

Next steps:

• Complete additional testing on different representative lower-grade material and potential ore-sorting product streams;
• Complete gold deportment, mineralogical, porosity, permeability and dye-penetration studies on the different lower-grade mineralization to identify controls on coarse-particle recovery;
• Use the optimized metallurgical results to inform process selection, engineering trade-off studies and future economic studies at Pardo.

About Inventus Mining Corp.

Inventus is a mineral exploration and development company focused on the world-class mining district of Sudbury, Ont. Inventus has a 100-per-cent interest in its principal assets, the Pardo paleoplacer gold project and the Sudbury 2.0 critical mineral project, located northeast of Sudbury. The Pardo gold project is the first important paleoplacer gold discovery in North America. Inventus has approximately 221 million common shares outstanding.

Qualified person

The qualified person responsible for the technical content of this news release is Wesley Whymark, PGeo, chief executive officer and director of Inventus, who has reviewed and approved this release. Mr. Whymark is not independent of the company.

Technical information

The metallurgical program was completed by Process Mineralogical Consulting under project JAN2026-08. A 310-kilorgram composite of Trench 1 material was dried, crushed and split for column and bottle-roll testing. The three column tests used 0.5-gram-per-litre sodium cyanide solution and were operated for 78 days. Gold recovery was calculated using gold captured on activated carbon together with final residue assays. Multiple large-mass photon assays were used to reduce sampling uncertainty associated with the coarse-gold nugget effect. Calculated head grades are reconciled values based on recovered gold and residual gold. The results are laboratory scale and pertain only to the samples tested.

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