Dr. Stephen Twyerould reports

GUNNISON COPPER ANNOUNCES DISTRIBUTION OF GREENSTONE SHARES

On Feb. 4, 2026, Greenstone Resources II LP, together with its affiliates, Greenstone Excelsior Holdings LP, Greenstone Co-Investment No. 1 (Excelsior) LP and Greenstone Co-Investment No. 2 (Excelsior) LP (together, the Greenstone Group), entered into an agreement with Paradigm Capital Inc., pursuant to which the Greenstone Group appointed Paradigm to act as agent on a commercially reasonable best-efforts basis, in connection with an offering to institutional investors of up to 143,208,937 common shares of Gunnison Copper Corp. currently owned by the Greenstone Group.

Completion of the offering will be subject to execution by the Greenstone Group and the purchasers of share purchase agreements. Completion of the offering is expected to occur on or by Feb. 17, 2026.

As Greenstone's fund approaches the end of its investment life cycle and begins to sunset, the transfer of shares is a normal and orderly process. Gunnison remains grateful for Greenstone's long-term support and looks forward to continuing to build value for its expanding institutional shareholder base.

"On behalf of Gunnison, I would like to express our sincere gratitude to Greenstone Resources LP for being a valued and supportive partner over the last 10-plus years," said Dr. Stephen Twyerould, president and chief executive officer of Gunnison Copper. "Greenstone has played an important role in the company's growth and advancement, and we deeply appreciate their long-standing commitment and contribution to our progress."

The Greenstone Group beneficially owns and controls 143,208,937 common shares of Gunnison, representing an aggregate ownership interest in Gunnison of 33.88 per cent (excluding conversion or exercise of debentures and options of Gunnison owned by the Greenstone Group and which do not form part of the offering).

Following completion of the offering, the Greenstone Group will no longer own any common shares of Gunnison, representing a decrease in ownership of 33.88 per cent.

About Gunnison Copper Corp.

Gunnison Copper is a multiasset pure play copper developer and producer that controls the Cochise mining district, containing 12 known deposits within an eight-kilometre economic radius, in the Southern Arizona copper belt.

Its flagship asset, the Gunnison copper project, has a measured and indicated mineral resource containing over 831.6 million tons with a total copper grade of 0.31 per cent (measured mineral resource of 191.3 million tons at 0.37 per cent and indicated mineral resource of 640.2 million tons at 0.29 per cent) and a preliminary economic assessment (PEA) yielding robust economics, including a net present value (discounted at 8 per cent) of $1.3-billion, an internal rate of return of 20.9 per cent and a payback period of 4.1 years. It is being developed as a conventional operation with open-pit mining, heap leach and an SX/EW (solvent extraction/electrowinning) 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.

In addition, Gunnison's Johnson Camp asset, which is now in production, is fully financed by Nuton LLC, a Rio Tinto venture, with a production capacity of up to 25 million pounds 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, including the PEA and mineral resource estimate, please refer to the company's technical report entitled "Gunnison Project NI 43-101 Technical Report Preliminary Economic Assessment," dated effective Nov. 1, 2024, and available on SEDAR+.

Dr. Twyerould, a fellow of AusIMM and president and chief executive officer of the company, is a qualified person as defined by National Instrument 43-101. Dr. Twyerould has reviewed and is responsible for the technical information contained in this news release.

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