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G Mining Ventures Secures Bank Credit Facility and Equipment Financing to Construct Oko West

Financings Debt & Credit Facilities

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G Mining Ventures Secures Bank Credit Facility and

Equipment Financing to Construct Oko West

BROSSARD, QC, October 6, 2025 – G Mining Ventures Corp . (“GMIN” or the “ Corporation”)

(TSX:GMIN, OTCQX:GMINF) is pleased to announce that it has secured commitments for an initial

US$387.5 million (“M”) financing package, with the potential to be increased by an additional

US$150M beginning six months after closing, subject to lender approval. This financing package,

which could total up to US$537.5M, provides the Corporation with the financial flexibility to

advance the development and construction of its 100% -owned Oko West Gold Project (“ Oko

West” or the “Project”) in Guyana.

The financing package is anchored by an agreement (the “Agreement”) with a syndicate of financial

institutions (the “ Syndicate”) for a revolving credit facility (the “Revolving Credit Facility ” or

“Facility”) that allows the Corporation to borrow up to US $350M, with an accordion feature for

an additional US$150M available post-closing, subject to customary conditions. The Syndicate is

led by National Bank Capital Markets (“National Bank”) and Macquarie Bank Limited (“Macquarie”)

as joint bookrunners and co-lead arrangers, with participation from Bank of Montreal, ING Capital

LLC, Royal Bank of Canada, Citibank and CIBC.

In addition, Komatsu Finance Chile S.A. (“ Komatsu Finance”), a subsidiary of global equipment

leader Komatsu Ltd., and GMIN Ventures Guyana Inc., an indirect wholly owned subsidiary of

GMIN, are pleased to announce the execution of a Master Loan and Security Agreement (“MLSA”)

to finance the procurement of mining and construction equipment for the development of the

Project. Under the terms of the MLSA, Komatsu Finance will provide financing through multiple

equipment notes with a total principal amount not to exceed US$37.5M.

“With these financing arrangements in place, together with strong cash flow from the Tocantinzinho

Mine, we now have the financial resources required to bring Oko West into production,” commented

Julie Lafleur, VP Finance & Chief Financial Officer . “ This entirely non- dilutive package increases

financial capacity, provides additional flexibility, and reflects the confidence of National Bank,

Macquarie, Komatsu Finance and the broader syndicate in our ability to deliver. We remain focused on

disciplined capital allocation and advancing Oko West responsibly, on schedule, and within budget to

generate meaningful value for all stakeholders.”

Following the receipt of the Oko West environmental permit from Guyana’s Environmental

Protection Agency on September 2, 2025, and with this financing package now in place, GMIN is

positioned to make a Final Investment Decision (“FID”) on the Project later this month, which will

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outline the forecasted initial capital cost, investment incurred to date, and remaining expenditures

through to completion.

Summary of Revolving Credit Facility Terms:

o Credit Facility: Senior secured revolving facility of US$350M, with an accordion option

for an additional US$150M available six months after closing, subject to lender approval.

o Maturity: Initial term of up to 3 years from closing, with annual extension options to reset

tenor back to 3 years subject to lender’s consent.

o Use of Proceeds: General corporate purposes, including refinancing existing debt, Oko

West Project development and supporting working capital.

o Pricing: SOFR plus a 0.10% credit spread adjustment, and an applicable margin ranging

from 2.75% to 3.75%, depending on the net leverage ratio.

Strengthening GMIN Leadership Team

In conjunction with this announcement, GMIN is also pleased to welcome Jamie Flegg as Vice

President, Corporate Development. Mr. Flegg brings over 12 years of experience across mining

capital markets, including corporate development, investor relations, pr ivate equity, and

investment banking. Most recently, he served as Chief Development Officer at Sigma Lithium, and

previously as Director, Investment Management at Waterton Global Resource Management. He

began his career in Investment Banking with Red Cloud Securities. Mr. Flegg is a Chartered

Financial Analyst (CFA), holds an MBA and a Bachelor of Science (Honours) from Queen’s

University, and currently serves on the Board of Directors of Comet Lithium Corporation.

“We are excited to welcome Jamie to the GMIN leadership team,” said Louis-Pierre Gignac, President

& Chief Executive Officer. “His proven track record in corporate development and capital markets will

be instrumental as we continue to execute our disciplined growth strategy and position GMIN as the

next mid-tier gold producer. His addition further strengthens our ability to engage with global capital

markets as we enter this next phase.”

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.

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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

[email protected]

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) the Revolving Credit Facility being subject to customary conditions ; (ii) the potential to increase financing

commitments to US$150M; (iii) the proceeds from the Revolving Credit Facility to be used primarily for construction of Oko

West, with flexibility for general corporate purposes and/or repayment of existing debt; (iv) the Corporation having the financial

resources to bring Oko West into production ; and (v) in general, the section entitled “About G Mining Ventures Corp .” as well

as the quoted comments of GMIN’s President & Chief Executive Officer.

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 a number of 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 the price of gold and currency exchange rates, those relating to the Corporation meeting

the conditions precedent to close the Revolving Credit Facility and to eventually exercise the accordion option (in whole or in

part), and those underlying the items listed in the above section entitled “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) a formal construction for Oko West will be made in H2-2025, or at all; (ii) the Corporation will, by closing

the Revolving Credit Facility, deliver a high -quality project that will generate meaningful value for all stakeholders ; (iii) the full

US$150M accordion will be used ; (iv) the MLSA with Komatsu Finance will be used for the full amount of US$37.5M; (v)

Guyana will remain attractive for mining investment; (v i) Oko West will advance responsibly and on schedule and GMIN will

achieve its stated objectives in respect thereof; or (vii) TZ and Oko West will grow GMIN 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 a number of 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 sta tements. 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 (ii) Management Discussion & Analysis. The Corporation

cautions that the foregoing list of f actors 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 differenc e between subsequent actual events and such forward -looking statements,

except to the extent required by applicable law.