G Mining Ventures (GMIN) Corporate presentation summary

Portfolio and growth strategy

• Portfolio spans Tocantinzinho in production, Oko under construction and Gurupi in advanced exploration; combined land package totals 2,950 km².

• Growth strategy is to acquire or advance development-stage assets, build and operate them, then use exploration to extend mine life and support resource growth.

• Oko’s illustrative combined life-of-mine average production potential is ~500 koz annually, including 350 koz from Oko West and 228 koz from Oko-Ghanie; combined timing and output remain subject to an updated feasibility study, and G2 resources are historical estimates.

• Consolidated free cash flow is projected to exceed $1.2B in 2028 at $4,000/oz gold; the estimate includes Tocantinzinho and Oko West only.

Tocantinzinho operations

• 2025 production was 171,871 oz, with AISC of $1,155/oz and mine-site free cash flow of $255M.

• Q2 2026 production was 36,845 oz, up 16% QoQ; mine-site free cash flow was $85M, or $2,301/oz produced.

• 2026 guidance is 160–190 koz at cash costs of $836–$965/oz and AISC of $1,330–$1,544/oz; 2027 guidance is 200–235 koz at cash costs of $633–$743/oz and AISC of $977–$1,146/oz.

• Higher H2 2026 production is expected as mining accesses higher-grade Phase 2 ore; 2027 production is expected to rise 25% over 2026, with lower costs.

• Mineralization remains open below the current pit, with potential for resource conversion or additions subject to further drilling, modelling and economic evaluation.

Oko construction and funding

• First gold is targeted for H2 2027 and commercial production in early 2028; construction was reported on schedule and budget, at 36% complete by earned value as of the presentation.

• As of June 30, 2026, $423M had been spent and $628M committed; detailed engineering was progressing toward Q3 completion and procurement was ~99% complete.

• Oko is projected to be fully funded to first gold, with $1.288B in estimated sources, $550M of remaining Oko West capital costs and a projected $650M liquidity surplus. Sources include cash, a credit facility and estimated Tocantinzinho free cash flow at $4,000/oz gold.

• The combined Oko project has 362 km² of land and is positioned as a district-scale development; infill drilling is converting resources, with a 55,000 m program 35% complete.

• G2 permitting is planned as an expansion through a permit variance; EPA approval is expected to depend on completing requirements set through the permitting process.