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GENM.TO ·

GENERATIONMINING Generation Mining Provides Update on Regional Exploration Program

Exploration Programs

TORONTO, Ontario, October 7, 2026 - Generation Mining Limited (TSX: GENM) (OTCQB: GENMF) (“Gen Mining” or the “Company”) is pleased to provide an update on its 2026 summer exploration program, which included regional soil sampling, geological mapping and prospecting, and the identification of historical drill core for targeted relogging and sampling of previously underexplored Layered Series rocks. The relogging and sampling program is planned for Q1 2027. The 2026 field program has now been completed, with approximately half of the soil sample assay results received and prospecting assay results pending.

2026 Regional Exploration Program

During the 2026 field season, Gen Mining completed a regional soil sampling program comprising 1,786 stations across approximately 10 km of strike length at the Four Dams, Lacobeer, Skipper and Boyer prospects. The program was designed to evaluate hanging wall copper potential and test targets identified through the Company's 2024 ALS Goldspot (“Goldspot”) prospectivity analysis, which compared geophysical and geochemical signatures with known styles of mineralization across the Company’s Marathon property (the “Property”) (see news release dated July 26, 2024).

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Figure 1: Regional Deposits and Exploration Prospects.

In addition, a mapping and prospecting campaign was completed to evaluate moderate and high-priority Goldspot targets within the prospective Marathon Series horizon and surrounding Archean country rock. Targeted relogging and sampling of historical drill core will also be completed during the winter months in areas where mineralized Layered Series rocks remain unsampled at the Sally Deposit. Results from these programs will be integrated with the revised geological interpretation to refine priority exploration targets and assess the broader copper potential of the Layered Series across the Property.

Assay results have been received for 909 of the 1,786 soil samples collected during the 2026 program, representing approximately 51% of the total samples. The Four Dams and Lacobeer prospects currently provide the most continuous coverage of soil assay results received to date (Figure 2). Sampling within this area was initially prioritized proximal to the interpreted contact between the overlying Layered Series and the prospective Marathon Series, where historical surface sampling and drill results have identified copper mineralization. Additional sampling was subsequently completed further from the contact and known mineralization, with results from portions of these areas still pending.

“We are encouraged by the initial results from our 2026 regional exploration program,” said Jamie Levy, President and Chief Executive Officer. “We look forward to receiving the remaining results and identifying opportunities for follow-up exploration.”

Legend

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Figure 2: Preliminary 2026 copper-in-soil results at the Four Dams and Lacobeer prospects. Historical surface copper samples, drill collars and 2024 ALS Goldspot prospectivity targets are shown for reference. Soil assay results remain pending for portions of the survey area.