Accelerated waste stripping positions Tocantinzinho for stronger second-half production

G Mining Ventures Corp. (TSX: GMIN) (OTCQX: GMINF) reports preliminary production results for the quarter ended March 31, 2026 from its 100%-owned Tocantinzinho Gold Mine in Pará State, Brazil. Results were in line with the Corporation’s expectations.

Q1 2026 Preliminary Highlights

• Gold produced: 31,846 oz
• Gold sold: 33,776 oz
• Average plant throughput: 11,811 tpd
• Average grade processed: 1.03 g/t Au
• Gold recovery: 9 0.3%
• Strip ratio: 4.40x

“TZ delivered consistent operating performance during the first quarter, with results reflecting the planned sequencing of lower-grade material as mining activities focused on waste stripping and pit advancement,” said Louis-Pierre Gignac, President and Chief Executive Officer. “This work supports access to higher-grade Phase 2 mineralization and positions the operation for a meaningful increase in grade and production in the second half of 2026, in line with our guidance.”

Operational Results:

Table 1. Tocantinzinho Preliminary First Quarter 2026 Operational Results

¹ Q1 2026 operating results are preliminary and subject to final reconciliation. Comparative Q4 2025 and Q1 2025 operating data are derived from the Corporation’s previously reported results.

Operational Commentary

TZ delivered stable operating performance during the first quarter, with throughput and recoveries in line with our operating plan. Slightly lower metallurgical recoveries were expected with a lower head grade. With the plant now operating at steady state, quarterly production variability is primarily driven by mine sequencing and grade profile.

Gold production reflected the planned processing of lower-grade, which was the primary driver of lower output relative to previous quarters. Stockpile rehandling and blending supported consistent plant feed during the quarter.

Mining activities focused on accelerated waste stripping and pit advancement to access higher-grade Phase 2 mineralization. As a result, the strip ratio increased to 4.4x and total material movement reached 5.5 Mt. This elevated stripping is taking place in Phase 2 and positions the operation for improved grades and stronger production in the second half of the year, in line with the Corporation’s mine plan.

On Track to Deliver 2026 Guidance

The Corporation maintains its 2026 production guidance of 160,000 to 190,000 ounces of gold. Production is expected to be weighted toward the second half of the year, with approximately 62% of annual output forecast for H2 2026 as higher-grade Phase 2 mineralization is accessed in accordance with the mine plan.

Qualified Person

Louis-Pierre Gignac, President & Chief Executive Officer of GMIN, a QP as defined in NI 43-101, has reviewed the press release on behalf of the Corporation and has approved the technical disclosure contained in this press release.

About G Mining Ventures Corp.

G Mining Ventures Corp. is a mining company engaged in the acquisition, exploration and development of precious metal projects to capitalize on the value uplift from successful mine development. 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 in Guyana — all with significant exploration upside and located in mining-friendly jurisdictions. GMIN trades on the TSX under the symbol “GMIN”.