Gunnison Copper Corp. (NYSE American: GUNN) (TSX: GCU) (OTCQB: GCUMF) (FSE: 3XS0), an American copper producer headquartered in Phoenix, Arizona, intends to award equity to 115 eligible permanent employees across its workforce to mark its October 26, 2026, debut on NYSE American under the ticker GUNN”, giving the people helping produce American copper a personal stake in the Company’s future.

The initiative, unveiled during a recent Company Town Hall at its Johnson Camp Mine, reinforces Gunnison’s core value of People First and reflects its commitment to giving employees a meaningful stake in the Company’s future.

“We Are All Owners” – Building Gunnison’s Future Together

“Our employees helped bring Johnson Camp into production in 18 months,” said Craig Hallworth, President and Chief Executive Officer of Gunnison Copper. “As Gunnison begins trading on NYSE American, we want them to share in the future they are helping build. People First means recognizing that contribution with a personal stake in the Company.”

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American Workers Producing Pure American Copper

At Gunnison’s producing Johnson Camp Mine in Cochise County, Arizona, American workers mine, process and produce finished copper cathode on-site, eliminating the need for overseas smelting or refining. With annual production capacity of up to 25 million pounds of finished copper cathode, Johnson Camp is helping strengthen the domestic supply chains essential to U.S. national security, defense readiness, advanced manufacturing and next-generation technologies.

Copper supply chains from Johnson Camp Mine directly supply Amazon Web Services data center construction and key defense primes critical to U.S. national security, defense manufacturing and advanced technologies.

Gunnison is also advancing its flagship Gunnison Copper Project, located approximately 1.5 miles from Johnson Camp, representing a significant opportunity to expand domestic copper production.

From Arizona to the New York Stock Exchange

Employees received commemorative award certificates at the October 20 town hall. Representatives of Gunnison’s workforce then traveled from Arizona to New York to join the Company’s first day of trading. The employee awards are planned to be in the form of restricted share units with a 12-month vesting period from the initial listing date on the NYSE American. The awards will be granted after the completion of required regulatory processes and filings.

The milestones followed a visit to Johnson Camp by U.S. Secretary of the Interior Doug Burgum and Congressman Juan Ciscomani, highlighting the mine’s contribution to domestic copper production.

Joining Hallworth and Melissa Mackie, VP, Investor Relations & Communications, in New York were Jon Vaughn, Wellfield Operator; Josh Parrie, Wellfield Manager; Chrissy Rosthenhausler, Accounting Superintendent; and Alex Bovell, Senior Manager, Accounting and Reporting.

Media Contact & Interview Availability

For media inquiries or to arrange interviews with Gunnison Copper President & CEO Craig Hallworth and featured employees, please contact:

Melissa Mackie
VP, Investor Relations & Communications, Gunnison Copper Corp.
mmackie@gunnisoncopper.com

Interviews are available on Wednesday, October 28, at 3:00 p.m. ET, or Thursday, October 29, at 4:00 p.m. ET, subject to confirmation. Please contact Melissa Mackie to coordinate.

Video and Photos

Employees visited Wall Street and the NYSE where they spoke about the pride of ownership and dedication they feel for Gunnison. President & CEO Craig Hallworth discussed the great American values at Gunnison as the company grows copper production in the U.S.

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President & CEO, Craig Hallworth, announces the employee equity award during the Company’s Flag and Monument Dedication Carmony on October 20, 2026 reinforcing Gunnison’s People First commitment and celebrating a shared future of employee ownership.

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Gunnison Copper employees display their equity award certificates following the Company’s October 20 town hall.

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Gunnison Copper employees receive certificates recognizing their planned equity awards at Johnson Camp Mine in Arizona.

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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 main pit Measured and Indicated Mineral Resource containing over 846 million tons with a total copper grade of 0.33% containing 5.19 billion pounds of copper (Measured Mineral Resource of 192 million tons at 0.37% containing 1.42 billion pounds of copper and Indicated Mineral Resource of 655 million tons at 0.31% containing 3.77 billion pounds of copper).

The Strong & Harris satellite deposit, located approximately 1.9 miles from the Gunnison processing facilities, is also included in the mine plan and hosts an Inferred Mineral Resource of 76 million tons grading 0.49% total copper (0.32% CuOx) at a 0.07% cutoff, 0.56% zinc and 0.12 oz/ton silver, containing approximately 740 million pounds of copper, including 483 million pounds of oxide copper, as well as zinc (856 million pounds) and silver (9.0 million ounces).

A preliminary economic assessment was completed in March 2026 for the Gunnison Project yielding robust economics including an NPV8% of $2 billion, IRR of 22.5%, and payback period of 3.9 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.

In addition, Gunnison’s Johnson Camp Asset, which is now in production, 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 South Star, and eight other deposits.

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

For additional information on the Gunnison Project please refer to the technical report titled “Gunnison Project NI 43-101 Technical Report, Preliminary Economic Assessment, Cochise County, Arizona, USA” with an effective date of March 18, 2026 filed on SEDAR+ at www.sedarplus.ca.

For additional information on the Johnson Camp Mine please refer to the technical report titled “Johnson Camp Mine NI 43-101 Technical Report, Cochise County, Arizona, USA” with an effective date of March 18, 2026 filed on SEDAR+ at www.sedarplus.ca.

Dr. Roland Goodgame, Senior VP of Project Development of the Company is a Qualified Person as defined by NI 43-101. Dr. Goodgame has reviewed and approved the technical information contained in this news release.

For further information regarding this press release, please contact:

Gunnison Copper Corp.
Concord Place, Suite 300, 2999 North 44th Street, Phoenix, AZ, 85018