G Mining Ventures Corp. (TSX:GMIN | OTCQX:GMINF) provides an update on its exploration drilling activities completed at its wholly owned Gurupi Project  in Maranhão state, Brazil and Tocantinzinho mine in Pará State, Brazil. At Gurupi, drilling continues to demonstrate extensions to known mineralization at the Blanket and Mandiocal deposits and while maiden drilling at the Grodiocal target has confirmed a new near-surface gold discovery. At TZ, drilling below the current pit design confirms the continuity of mineralization at depth, while regional exploration is identifying additional opportunities across a broader mineralized corridor.

Intercepts are indicated in metres and grade in grams per tonne of gold.

New highlights include:

Gurupi 

• Blanket: Broad intercepts extend mineralization approximately 250 metres beyond the 2025 Mineral Resource Estimate, with results including 79.6 m at 1.78 g/t Au and 63.5 m at 1.28 g/t Au
• Mandiocal: Mineralization extended up to 125 m below the 2025 MRE pit shell, including 48.4 m at 1.32 g/t Au and 35.0 m at 1.37 g/t Au
• Grodiocal: Maiden drilling confirmed a new, near-surface gold discovery, highlighted by 23.0 m at 1.97 g/t Au, including 9.0 m at 4.24 g/t Au and 10.0 m at 3.42 g/t Au
• An updated MRE is expected to be complete before year-end, which will form the basis of a Preliminary Economic Assessment (“PEA”) targeted to be completed by the end of 2026

TZ

• Drilling up to 150 metres below the current pit design confirms continuity of mineralization at depth
• Results include 78.1 m at 1.81 g/t Au, including 16.0 m at 4.34 g/t Au and 51.0 m at 1.31 g/t Au, including 7.80 m at 6.42 g/t Au
• Regional exploration has defined a 15 km by 3 km mineralized corridor hosting the Tocantinzinho deposit and multiple satellite targets.

Julie-Anaïs Debreil, Vice-President Geology & Resources, commented: “The results from our 2026 exploration programs continue to validate the significant potential we see across both Gurupi and Tocantinzinho. At Gurupi, drilling has successfully extended mineralization at Blanket and Mandiocal while confirming a new gold discovery at Grodiocal, further demonstrating the district-scale potential of the Project. At TZ, drilling below the current pit design continues to confirm the continuity of mineralization at depth, while regional exploration is identifying additional opportunities across a broader mineralized corridor. As we advance an updated MRE and PEA at Gurupi, these programs continue to strengthen our pipeline of organic growth opportunities in Brazil.”

Gurupi Demonstrates District-Scale Growth Potential

Gurupi hosts approximately 43.5 million tonnes grading 1.31 g/t Au, which contain 1.8 million ounces of Indicated Resources and 18.5 Mt grading 1.29 g/t Au containing 0.8 Moz of Inferred Resources as estimated in the 2025 MRE, distributed across the Blanket, Contact, Chega Tudo and Mandiocal deposits (Figure 1). Since exploration drilling resumed in November 2025, the Corporation has completed 32,610 m in 186 holes across Blanket, Mandiocal and Grodiocal. The program is testing extensions to existing mineralized systems and evaluating the newly discovered Grodiocal target along the prospective Chega Tudo-Mandiocal corridor.

Figure 1 – Gurupi Deposits

Blanket Drilling Intersects Mineralization Beyond Current Resource Limits

At Blanket, drilling continues to test the potential for further extensions of mineralization beyond the current MRE. Nineteen diamond drill holes for 6,323 m have been completed with assay results received for seven holes and results pending for 12 holes (Table 1). Recent drilling has intersected mineralization approximately 250 m beyond the current MRE, supporting the interpretation of down-plunge continuity and indicating that the deposit remains open for follow-up drilling (Figures 2a, 2b and 2c). Structural analysis indicates that multiple folding events have enhanced both the thickness and grade distribution of mineralization, creating broad zones that remain only partially tested. Results from the ongoing program support continued evaluation of the deposit along plunge and at depth.

Table 1: Significant Blanket Drilling Highlights

21

9

5

3

5

2

*True width estimated at 95% of the length

Figure 2a – Section through Blanket Deposit

Figure 2b – Section through Blanket Deposit

Figure 2c – Section through Blanket Deposit

Mandiocal Drilling Confirms Down-Plunge Continuity

At Mandiocal, gold mineralization is hosted within a dacitic volcanic unit. Twenty-four diamond drill holes for 6,787 m have been completed, with assay results received for 13 holes and results pending for 11 holes (Table 2). The objective was to evaluate the lateral and depth extensions of the deposit. Drilling has intersected mineralization up to 125 m below the 2025 MRE pit shell while demonstrating increased thickness of the mineralized system at depth (Figure 3). These results support the interpretation of southeast down-plunge continuity and indicate that mineralization remains open beyond the limits of the current resource model.

Table 2: Significant Mandiocal Drilling Highlights

*True width estimated at 85% of the length

Figure 3 – Section of Mandiocal deposit

Maiden Drilling Confirms the Grodiocal Gold Discovery

Grodiocal is a newly identified discovery located northwest of Mandiocal along the prospective Chega Tudo trend, where no historical drilling had previously been completed. The maiden program comprised 17,667 m in 127 holes, including 22 diamond drill holes and 105 Reverse Circulation holes, and identified multiple zones of near-surface gold mineralization within a corridor extending approximately 5 km in strike length and up to 1 km in width (Table 3). Mineralization is hosted within deformed sedimentary rocks of the Chega Tudo Formation. The results establish Grodiocal as a priority target for follow-up drilling to better define the geometry, continuity, and extent of the mineralized zones (Figure 4).

Table 3: Significant Grodiocal Drilling Highlights

5

7

*True width estimated at 85% of the length

Figure 4 – New Grodiocal Discovery

Results from the Gurupi exploration program will be evaluated for inclusion in an updated MRE. The Corporation is also advancing a PEA targeted for year-end 2026, which is expected to evaluate potential development scenarios for the Project.

TZ Continues to Deliver Near-Mine and District-Scale Opportunities

While Gurupi represents an important future growth platform, TZ remains the foundation of GMIN’s Brazilian operations and a key source of near-mine organic growth. Exploration at the operation is focused on testing mineralization below the current pit design and advancing a growing pipeline of regional targets across the broader district. Together, these programs are intended to support future resource evaluation and mine-planning opportunities around GMIN’s cornerstone producing asset in Brazil.

TZ Drilling Confirms Mineralization Below the Current Pit

Recent drilling completed up to 150 m beneath the current pit design continues to demonstrate the continuity of mineralization at depth and provides potential for mineral resource conversion or additions, subject to additional drilling, geological modelling and economic evaluation (Figure 5). Recent drilling from four holes (2,548 m) returned broad mineralized intervals supporting the extension of the mineralized system below currently defined mining limits (Table 4).

Table 4: Significant TZ Drilling Highlights

*True width estimated at 85% of the length

These results improve the geological understanding of the mineralized system below the current pit design and identify areas for continued drilling and evaluation in future resource and mine-planning studies.

Figure 5 – Long section of the TZ deposit

Regional Program Advances TZ Exploration Pipeline

Beyond the existing deposit, regional exploration has established a new district-scale exploration framework centered on a 15-km by 3-km mineralized transtensional corridor that hosts the TZ deposit and numerous satellite targets. Exploration is increasingly focused on structural intersections between the main NW-SE (TZ trend) and E-W structures, which are interpreted to be key controls on mineralization. This work has identified multiple priority targets, providing a growing pipeline of near-mine and regional growth opportunities.

Exploration along newly defined trends has delineated several mineralized zones over a strike length exceeding 3 km and has returned rock sample assays of up to 29.8 g/t Au, reinforcing the potential for the discovery of additional mineralization within the broader TZ district.

Next Steps

Exploration activities across Gurupi and TZ continue to advance according to plan. Follow-up drilling is underway at Blanket, Mandiocal and Grodiocal while an updated Gurupi MRE and PEA remain targeted for year-end 2026. At TZ, drilling continues below the current pit design and across regional targets within the recently defined mineralized corridor.

Year-to-date, the Corporation has completed approximately 33,600 m of the accelerated 65,000 m program at Gurupi, 14,500 m of the 25,000 m program at TZ. Exploration results from approximately 31,000 m drilled at GMIN’s wholly owned Oko Project, Guyana, will be reported in a separate news release at a later date.

Sampling and Quality Assurance/Quality Control Disclosure

Gurupi assay samples are prepared at ALS Chemex in Parauapebas, Brazil, and Tocantinzinho assay samples are prepared at ALS Chemex in Cuiaba, Brazil. Samples from both projects are analyzed at an accredited laboratory in Lima, Peru, using fire assay and Inductively Coupled Plasma methods. Standard preparation includes crushing to 70% passing 2 mm and pulverizing 250 g to 85% passing 75 μm. Gold assays are performed using a 30 g fire assay with atomic absorption finish, with samples returning >10 g/t Au re-assayed by fire assay with gravimetric finish. When visible gold is present, a 1 kg split is pulverized to 95% passing 106 μm and subjected to screen fire assay for coarse gold evaluation. Duplicate analyses are also completed for added quality control. For a complete description of Gurupi’s sample preparation, analytical methods and QA/QC procedures, refer to the technical report for the Gurupi Project dated April 8, 2025 (effective date February 3, 2025), entitled “Mineral Resource Estimate NI 43-101 Technical Report Gurupi Project”. For TZ, refer to the technical report dated April 8, 2025 (effective date February 3, 2025), entitled “Feasibility Study – NI 43-101 Technical Report, Tocantinzinho Gold Project”.

The Corporation maintains a rigorous QA/QC program, including the routine insertion of certified standards, blanks, and field duplicates (approximately 10% of all samples). QA/QC results are closely monitored, and any failures are re-assayed to ensure the reliability of reported results.

Qualified Person

The technical content of this press release has been reviewed and approved by Julie-Anaïs Debreil, Vice President Geology & Resources of GMIN, who is a Qualified Person as defined by National Instrument 43-101 Standards of Disclosure for Mineral Projects.

About G Mining Ventures Corp.

G Mining Ventures Corp. is a mining company engaged in the development, operation and exploration of precious metals projects. GMIN is well-positioned to grow into the next mid-tier precious metals producer by leveraging strong access to capital and proven development expertise. GMIN is currently anchored by the Tocantinzinho Mine in Brazil, supported by the Gurupi Project in Brazil and the Oko West Project and Oko-Ghanie Project in Guyana — all with significant exploration upside and located in mining-friendly jurisdictions. GMIN trades on the TSX under the symbol GMIN.

Appendix

Table 6: Collar coordinates of the released holes