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Gunnison Copper Announces Completion of Nebari Credit Agreement Amendment

Financings

NEWS RELEASE

Gunnison Copper Announces Completion of Nebari Credit Agreement Amendment

April 24, 2025

Gunnison Copper Corp. (TSX: GCU) (OTCQB: GCUMF) (FSE: 3XS0) ("Gunnison") is pleased to

announce that Gunnison, Gunnison's wholly-owned subsidiary Excelsior Mining Arizona, Inc. dba

Gunnison Copper ("Gunnison Arizona") and Nebari Natural Resources Credit Fund I LP ("Nebari") have

entered into to a Second Amended and Restated Credit Agreement (the "Second ARCA"). The Second

ARCA encompasses certain amendments to the First Amended and Restated Credit Agreement dated

December 22, 2021 (the “ First ARCA ”) that were announced on March 3, 2025 . The amendments

provide for, amongst other matters, a suspension of principal amortization from February 1, 2025 until

January 1, 2026, provide for potential partial conversion to equity of up to US$6.25 million of the principal

amount at a price equal to US$0.2097 (converted from Cdn$0.30), and provide for a mechanism to repay

a portion of the principal amount of the Second ARCA with proceeds to be received from sale of the

previously announced 48C tax credits and through a potential refinancing process provide for an

extension of the maturity date.

The Amendments were subject to certain conditions including conditional approval of the Toronto Stock

Exchange, approval from Greenstone Resources L.P. (“Greenstone”) and Triple Flag, deferral of interest

payments due under convertible debentures due to Greenstone and Triple Flag, certain agreements

between Nebari and Triple Flag agreement and commencement of a work program by Gunnison to

optimize certain opportunities identified in the preliminary economic assessment for the Gunnison

Project. All of these conditions have now been satisfied.

Nebari is at arm's length to the Company. There are no commissions or finders' fees payable in

connection with the transactions discussed in this news release.

ABOUT GUNNISON COPPER

Gunnison Copper Corp. is a multi-asset pure-play copper developer and producer that controls the

Cochise Mining District (the district), containing 12 known deposits within an 8 km economic radius, in

the Southern Arizona Copper Belt.

Its flagship asset, the Gunnison Copper Project, has a measured and indicated mineral resource

containing over 831 million tons with a total copper grade of 0.31% (measured mineral resource of 191.3

million tons at 0.37% and indicated mineral resource of 640.2 million tons at 0.29%), and a preliminary

economic assessment (“ PEA”) yielding robust economics including an NPV8% of $1.3Billion, IRR of

20.9%, and payback period of 4.1 years. It is being developed as a conventional operation with open pit

mining, heap leach, and SX/EW refinery to produce finished copper cathode on-site with direct rail link.

The PEA is preliminary in nature and includes inferred mineral resources that are considered too

speculative geologically to have the economic considerations applied to them that would enable them to

be categorized as mineral reserves. There is no certainty that the conclusions reached in the PEA will be

realized. Mineral resources that are not mineral reserves do not have demonstrated economic viability.

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In addition, Gunnison’s Johnson Camp Asset, which is under construction with first copper production

expected in mid 2025, is fully funded by Nuton LLC, a Rio Tinto Venture, with a production capacity of up

to 25 million lbs of finished copper cathode annually.

Other significant deposits controlled by Gunnison in the district, with potential to be economic satellite

feeder deposits for Gunnison Project infrastructure, include Strong and Harris, South Star, and eight other

deposits.

For additional information on the Gunnison Project please refer to the Company’s technical report entitled

“Gunnison Project NI 43-101 Technical Report Preliminary Economic Assessment” dated effective

November 1, 2024 and available on SEDAR+ at www.sedarplus.ca.

Dr. Stephen Twyerould, Fellow of AUSIMM, President and CEO of the Company is a Qualified Person

as defined by NI 43-101. Mr. Twyerould has reviewed and is responsible for the technical information

contained in this news release.

For more information on Gunnison, please visit our website at www.GunnisonCopper.com

For further information regarding this press release, please contact:

Gunnison Copper Corp.

Concord Place, Suite 300, 2999 North 44th Street, Phoenix, AZ, 85018

Shawn Westcott

T: 604.365.6681

E: [email protected]

www.GunnisonCopper.com

Cautionary Note Regarding Forward-Looking Information

This news release contains "forward-looking information" concerning anticipated developments and events that may

occur in the future. Forward looking information contained in this news release includes, but is not limited to,

statements with respect to: (i) the intention to deploy the Nuton® technology at the Johnson Camp mine and future

production therefrom; (ii) the continued funding of the stage 2 work program by Nuton; (iii) the details and expected

results of the stage two work program; (iv) future production and production capacity from the Company’s mineral

projects; (v) the results of the preliminary economic assessment on the Gunnison Project; (vi) the exploration and

development of the Company’s mineral projects; and (vii) the satisfaction of final conditions and receipt of 48C tax

credits.

In certain cases, forward-looking information can be identified by the use of words such as "plans", "expects" or

"does not expect", "budget", "scheduled", "estimates", "forecasts", "intends", "anticipates" or "does not anticipate",

or "believes", or variations of such words and phrases or state that certain actions, events or results "may", "could",

"would", "might", "occur" or "be achieved" suggesting future outcomes, or other expectations, beliefs, plans,

objectives, assumptions, intentions or statements about future events or performance. Forward-looking information

contained in this news release is based on certain factors and assumptions regarding, among other things, Nuton

will continue to fund the stage 2 work program, the availability of financing to continue as a going concern and

implement the Company’s operational plans, the allocation of the 48C tax credits between the Company and Nuton,

the satisfaction of the requirements set forth in Section 48C of the Internal Revenue Code, the estimation of mineral

resources, the realization of resource and reserve estimates, , copper and other metal prices, the timing and amount

of future development expenditures, the estimation of initial and sustaining capital requirements, the estimation of

labour and operating costs (including the price of acid), the availability of labour, material and acid supply, receipt

of and compliance with necessary regulatory approvals and permits, the estimation of insurance coverage, and

assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar

matters. While the Company considers these assumptions to be reasonable based on information currently

available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause

the actual results, performance or achievements of the Company to be materially different from any future results,

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performance or achievements expressed or implied by the forward-looking information. Such factors include risks

related to the Company not obtaining adequate financing to continue operations, Nuton failing to continue to fund

the stage 2 work program, the failure to satisfy the requirements set forth in Section 48C of the Internal Revenue

Code, 100% of the 48C tax credits may be allocated to repay capital expenditures for the Johnson Camp mine, the

breach of debt covenants, risks inherent in the construction and operation of mineral deposits, including risks

relating to changes in project parameters as plans continue to be redefined including the possibility that mining

operations may not be sustained at the Gunnison Copper Project, risks related to the delay in approval of work

plans, variations in mineral resources and reserves, grade or recovery rates, risks relating to the ability to access

infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and

supply of copper and related products, risks related to increased competition in the market for copper and related

products, risks related to current global financial conditions, risks related to current global financial conditions on

the Company’s business, uncertainties inherent in the estimation of mineral resources, access and supply risks,

risks related to the ability to access acid supply on commercially reasonable terms, reliance on key personnel,

operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes,

increases in capital and operating costs and the risk of delays or increased costs that might be encountered during

the construction or mining process, regulatory risks including the risk that permits may not be obtained in a timely

fashion or at all, financing, capitalization and liquidity risks, risks related to disputes concerning property titles and

interests, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s

reports and filings with applicable Canadian securities regulators.

Although the Company has attempted to identify important factors that could cause actual actions, events or results

to differ materially from those described in forward-looking information, there may be other factors that cause

actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place

undue reliance on forward-looking information. The forward-looking information is made as of the date of this news

release. Except as required by applicable securities laws, the Company does not undertake any obligation to

publicly update or revise any forward-looking information.