Mr. Jean-Francois Lemonde reports

G MINING VENTURES PUBLISHES 2025 SUSTAINABILITY REPORT

G Mining Ventures Corp. has published its 2025 sustainability report, outlining the corporation's environmental, social and governance (ESG) performance for the year ended Dec. 31, 2025. The report was prepared in alignment with the Sustainability Accounting Standards Board (SASB) Metals & Mining Standard (2023), with reference to the Global Reporting Initiative (GRI) Universal Standards (2021) and GRI 14 Mining Sector Standard (2024), and with climate-related disclosures organized under the four pillars of the Task Force on Climate-related Financial Disclosures (TCFD). Unless otherwise indicated, all dollar amounts are in United States dollars.

"Two thousand twenty-five was a defining year for GMIN, not only because of what we advanced, but because of the way we advanced it," said Eduardo Leao, vice-president, sustainability. "TZ completed its first full year of commercial production, Oko West moved from permitting into construction and Gurupi progressed the environmental and social work required to support its future development. Managing that level of activity across assets at different stages requires discipline, technical execution and strong relationships with the people, communities, and governments connected to our projects. As GMIN continues to grow, the standards we set for safety, environmental and social performance, stakeholder engagement, and governance become increasingly important to our ability to build and operate mines responsibly. The progress outlined in this report reflects the institutional rigour we are building across the business and the long-term approach we are taking as we advance toward becoming a larger gold producer."

During the year, G Mining maintained strong safety and environmental performance while delivering on 11 out of 13 commitments of its 2025 sustainability targets. The report also highlights progress on several programs that support the corporation's growing portfolio, including independent assessments against recognized mining industry standards, expanded human rights and supply chain due diligence, implementation of grievance management systems across all three assets and continued advancement of environmental and social management practices.

2025 sustainability highlights

• Strong safety performance: Zero work-related fatalities across approximately 3.7 million hours worked, with total recordable injury frequency rate of 0.23 at the Tocantinzinho mine (TZ), 0.40 at the Oko West project and zero at the Gurupi project.
• Sustainability commitments delivered: Achieved 11 of the 13 sustainability commitments established for 2025, representing a 100-per-cent completion rate.
• Responsible project advancement: Oko West advanced from environmental permit approval to mining licence approval and construction commencement within approximately 12 months.
• Local work force participation: Approximately 80-per-cent local work force participation at TZ and Oko West, and 100 per cent at Gurupi.
• Economic contribution: Approximately $127.7-million in local procurement across Brazil and Guyana, including approximately $67.5-million within the state of Para and approximately $59.1-million across Guyana.
• Community investment: More than $754,000 invested in community and social development initiatives across the corporation's portfolio.
• Water stewardship: Recycled 7.72 million cubic metres of process water at TZ while maintaining zero incidents of non-compliance with water quality permits, standards or regulations.
• Environmental performance: Zero significant environmental non-compliances, fines or regulatory sanctions across the portfolio.
• Land rehabilitation and waste management: Rehabilitated 36 hectares of land and diverted 132,215 tonnes of hazardous waste from disposal through recycling and recovery initiatives at TZ.
• Human rights due diligence: Completed the corporation's first human rights impact assessment and developed a supply chain human rights risk map covering more than 150 suppliers.
• Industry standards alignment: Completed third party assessments against the Global Industry Standard on Tailings Management (GISTM), all nine Towards Sustainable Mining (TSM) protocols and the International Cyanide Management Code at TZ.
• Community engagement: Implemented grievance and complaint management systems across all three assets, with all community submissions resolved.

The 2025 sustainability report, including detailed disclosures aligned with SASB, GRI and TSFD reporting frameworks, is available in the governance section of G Mining's website.

About G Mining Ventures Corp.

G Mining Ventures is a mining company engaged in the development, operation and exploration of precious metals projects. G Mining is well positioned to grow into the next mid-tier precious metals producer by leveraging strong access to capital and proven development expertise. G Mining 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. G Mining trades on the Toronto Stock Exchange under the symbol GMIN.

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