G Mining Ventures Receives Mining License for Oko West Gold Project

BROSSARD, Dec. 08, 2025 - G Mining Ventures Corp. ("GMIN" or the "Corporation") (TSX:GMIN, OTCQX:GMINF) is pleased to announce that the Guyana Geology and Mines Commission ("GGMC") has granted a Mining License (the "License") for the Corporation's 100%-owned Oko West Gold Project ("Oko West" or the "Project") located in Region 7, Guyana.

The License was granted effective December 5, 2025, and is valid for twenty years, authorizing development, operation, and commercial gold production at Oko West. This approval marks the final major permitting milestone for the Project and completes the main regulatory requirements necessary for full construction and long-term operations.

The License follows the receipt of the Final Environmental Permit on September 2, 2025 and the Corporation's formal construction decision on October 23, 2025. Early works began under the Interim Environmental Permit earlier in the year and continue under the Final Environmental Permit, allowing these activities to carry directly into full construction. With all major permits and approvals secured, GMIN is advancing Oko West development and construction in a disciplined manner aligned with the Corporation's project timeline.

"Securing the Mining License reflects not only the technical robustness of Oko West but also the collaborative relationships we have established with Guyanese authorities, communities, and partners," said Louis-Pierre Gignac, President & Chief Executive Officer. "Our commitment to responsible development is unwavering, and this milestone positions us to build Oko West into a world-class mining operation that delivers lasting economic and social benefits to Guyana."

Now that the License has been secured, the Project is poised to begin pre-production open-pit mining in the first quarter of 2026, with assembly of the initial mining equipment fleet already underway. This milestone will further advance the Project as construction efforts progress steadily into the coming year.

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".

Additional Information

For further information on GMIN, please visit the website at www.gmin.gold or contact:

Jean-François Lemonde
Vice President, Investor Relations
514.299.4926
Jflemonde@gmin.com

Cautionary Statement on Forward-Looking Information

All statements, other than statements of historical fact, contained in this press release constitute "forward-looking information" and "forward-looking statements" within the meaning of certain securities laws and are based on expectations and projections as of the date of this press release. Forward-looking statements contained in this press release include, without limitation, those related to (i) full construction being underway at Oko West; (ii) the assembly of the initial mining equipment fleet being underway, allowing the beginning of pre-production open-pit mining in the first quarter of 2026; (iii) Oko West advancing in a disciplined manner and within timeline; (iv) the progress on the tailings storage facility; (v) the systematic advancement of Oko West's development plan; (vi) GMIN's unwavering commitment to responsible development; (vii) the quoted comments and expectations of GMIN's President & Chief Executive Officer; and (viii) more generally, the section entitled "About G Mining Ventures Corp."

Forward-looking statements are based on expectations, estimates and projections as of the time of this press release. Forward-looking statements are necessarily based upon several estimates and assumptions that, while considered reasonable by the Corporation as of the time of such statements, are inherently subject to significant business, economic and competitive uncertainties and contingencies. These estimates and assumptions may prove to be incorrect. Such assumptions include, without limitation, those relating to GMIN continuing to generate strong free cash flow and strong profitability, those relating to GMIN's self-perform construction model and ability to deliver large-scale projects, those relating to the price of gold (in particular, the average realized gold price) and currency exchange rates, those outlined in the feasibility study for Oko West (notably the Project's technical attributes and its economics), and those underlying the items listed on the above sections entitled "Corporate Timetable and Next Steps" and "About G Mining Ventures Corp."

Many of these uncertainties and contingencies can directly or indirectly affect, and could cause, actual results to differ materially from those expressed or implied in any forward-looking statements. There can be no assurance that, notably but without limitation, (i) Oko West's upcoming key milestones will be achieved as contemplated or at all; (ii) GMIN will evolve into a true multi-asset producer; (iii) there will be no additional important regulatory requirements for Oko West; (iv) Oko West will prove one of the most important gold projects in the Americas; (v) pre-production open-pit mining will begin in the first quarter of 2026, or at all; (vi) GMIN's exploration activities at Oko West will lead to additional resources and eventually to reserves and additional gold production; (vii) GMIN has secured all funding required to advance Oko West into commercial production; (viii) GMIN will continue to benefit from the support of the Government of Guyana and its above-named agencies and authorities; (ix) the aggregate plant will be installed on schedule at Oko West; (x) Oko West will be brought into commercial production on time and within budget, or at all; (xi) Oko West will be a world-class mining operation delivering lasting economic and social benefits to Guyana; or (xii) GMIN will use TZ and Oko West to grow into the next mid-tier precious metals producer, as future events could differ materially from what is currently anticipated by the Corporation. In addition, there can be no assurance that Brazil and/or Guyana will remain mining friendly and prospective jurisdictions.

By their very nature, forward-looking statements involve inherent risks and uncertainties, both general and specific, and risks exist that estimates, forecasts, projections and other forward-looking statements will not be achieved or that assumptions do not reflect future experience. Forward-looking statements are provided for the purpose of providing information about management's expectations and plans relating to the future. Readers are cautioned not to place undue reliance on these forward-looking statements as several important risk factors and future events could cause the actual outcomes to differ materially from the beliefs, plans, objectives, expectations, anticipations, estimates, assumptions and intentions expressed in such forward-looking statements. All of the forward-looking statements made in this press release are qualified by these cautionary statements and those made in the Corporation's other filings with the securities regulators of Canada including, but not limited to, the cautionary statements made in the relevant sections of the Corporation's (i) Annual Information Form dated March 27, 2025, for the financial year ended December 31, 2024, and (iii) Management Discussion & Analysis. The Corporation cautions that the foregoing list of factors that may affect future results is not exhaustive, and new, unforeseeable risks may arise from time to time. The Corporation disclaims any intention or obligation to update or revise any forward-looking statements or to explain any material difference between subsequent actual events and such forward-looking statements, except to the extent required by applicable law.