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VANCOUVER, BC — September 4, 2026 - TheNewswire — Copper One Resources Corp. (CSE: CEXY | OTCID: CEXYF | FSE: IW8 | WKN: A42AGR) (“Copper One” or the “Company”) is pleased to announce new surface copper assay results from a first-pass reconnaissance program at the Sport Project ( “Sport” or the “Project” ) in Utah’s historic San Francisco Mining District ( “Frisco” ), which the Company is acquiring through its proposed acquisition of Rooinek Mining Corp. ( “Rooinek” ) (see news release dated July 20, 2026 ).

Highlights

• Grab samples returned up to 1.155% Cu (SP002), with visible malachite and chalcopyrite, from a first-pass surface program of 50 rock grab samples (Table 1, Figure 2).  

• The Company’s initial interpretation is that copper-silver mineralization occurs along faults and other structural conduits within a geological setting characterized by breccia- and intrusive-related copper mineralization.  

• Results support the Company’s thesis that the underexplored margins of the Frisco copper trend warrant further exploration. The Sport Project lies on trend with Hawk Resources’ (ASX: HWK) Cactus Copper-Gold Project.  

• Next steps: expanded surface sampling, geological mapping and geophysics to vector toward a potential intrusive copper source, plus gold fire assays on all reconnaissance samples.  

David Greenway, President and CEO of Copper One, commented: “These initial results help further delineate favorable exploration zones in the highly prospective Sport Project, with surface samples returning up to 1.155% copper from our first-pass reconnaissance program. Identifying this level of copper mineralization at surface provides a strong starting point for systematic follow-up exploration. We now intend to expand our sampling, mapping and geophysical work to better understand the controls on mineralization and evaluate the potential for a broader intrusive-related copper system at Sport.”

Reconnaissance Program

During initial reconnaissance exploration at Sport, geological consultants collected 50 rock grab samples (SP001–SP050) from surface outcrops. Multiple samples returned anomalous copper, highlighted by 1.155% Cu in sample SP002 and 0.819% Cu in sample SP044. Malachite and chalcopyrite were observed in mineralized outcrops. The Company’s initial interpretation is that mineralization occurs along faults, breccias, other structural conduits, and margins of small, late intrusive bodies.

Copper One plans to expand surface sampling coverage and evaluate whether the observed mineralization may provide vectors toward a concealed intrusive source of copper mineralization. The Company believes the structural setting and observed mineralization warrant further investigation within the broader Frisco copper trend. The Company’s thesis is that the margins of the Frisco copper trend remain underexplored, and it is encouraged by the results returned from this initial reconnaissance program.

Table 1 : Selected Sport Project Grab Sample Results

Notes: Copper for SP002 was reported by ALS using the Cu-OG62 ore-grade method after the initial analysis exceeded 10,000 ppm Cu. SP044 returned 8,190 ppm Cu (0.819% Cu) by ME-MS61L.

Copper Market

The Sport Project results come at a time of significant strength in the copper market. On August 26, 2026, copper traded above US$6.7775 per pound during intraday trading, reaching record territory , highlighting the increasingly strong market fundamentals for the metal. Copper demand continues to be supported by expanding investment in electrification, power-grid infrastructure, renewable energy and AI-driven data centres, while concerns over future mine supply have reinforced copper’s strategic importance. This market environment underscores the growing need for exploration and development of new copper projects in North America.

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Figure 1 : Copper Price Performance in 2026. COMEX most-active copper futures have gained approximately 17% in 2026, reaching a fresh intraday record of US$6.7775 per pound on August 26, 2026. (Source:COMEX)

David Greenway, President and CEO of Copper One, added: “Copper reaching a new record intraday high of US$6.7775 per pound on August 26 reinforces why we are focused on building a portfolio of North American copper assets. Copper is increasingly critical to power grids, electrification and the rapidly expanding infrastructure requirements of AI and data centers. Against that backdrop, we believe this is an important time to be exploring for new copper discoveries, and the early results at Sport provide us with another opportunity to do exactly that.”

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Figure 2 : Sport Project Geology and Reconnaissance Sample Locations. Geological map of the Sport Project showing the 108 contiguous lode mining claims, reconnaissance rock grab sample locations SP001–SP050, mapped faults, breccia zones, alteration and principal intrusive bodies.

About the Sport Project

The Sport Project comprises 108 contiguous unpatented lode mining claims covering approximately 1,902 acres (770 hectares) within the historic San Francisco (“Frisco”) Mining District, on lands administered by the U.S. Bureau of Land Management (“BLM”) in Beaver County, western Utah. The Project lies on trend with the Cactus Copper-Gold Project being explored by Hawk Resources (ASX: HWK). Surface mapping has identified extensive magmatic-hydrothermal breccias, alteration and structural features supporting the interpretation that near-surface, breccia-hosted mineralization may be associated with an intrusive-related copper system.

Sample Preparation and Analysis

The 50 rock grab samples were submitted to ALS in Reno, Nevada for sample preparation, with analytical work performed by ALS in Vancouver, British Columbia. Samples were analyzed using ALS method ME-MS61L, a four-acid digestion with ICP-MS analysis. Samples returning copper values above the analytical range were analyzed using ALS method Cu-OG62, an ore-grade four-acid digestion method. Sample SP002 returned 1.155% Cu by Cu-OG62. Grab samples are selective by nature and may not be representative of mineralization across the Project.

Qualified Person

The scientific and technical information contained in this news release has been reviewed and approved by  Larry Segerstrom, M.Sc. (Geology), CPG , a non-independent consulting geologist to the Company and a Qualified Person as defined under National Instrument 43-101 –  Standards of Disclosure for Mineral Projects .

About Copper One Resources Corp.

Copper One Resources Corp. is focused on identifying, acquiring, and advancing high-potential copper, copper-silver-gold, and copper-molybdenum projects to help meet the growing global demand for critical metals required for electrification, AI infrastructure and data centers, renewable energy, defence, and the modernization of power systems.

The Company’s flagship asset is the Majuba Hill Copper-Silver-Gold District, located approximately 156 miles (251 kilometres) from Reno, Nevada. Majuba Hill is an exploration-stage porphyry copper project situated in a premier mining jurisdiction with excellent infrastructure, where ongoing exploration is focused on evaluating the scale and continuity of a large copper-silver-gold mineralized system.

Copper One also owns a 100% interest in the Redonda Copper-Molybdenum Project, located northeast of Campbell River in British Columbia’s Vancouver Mining Division. The district-scale project comprises approximately 2,746.46 hectares (6,786 acres) across nine mineral claims and hosts a porphyry-style copper-molybdenum system within the highly prospective Coast Suture Zone, a geological belt known for significant porphyry copper and skarn mineralization. The Company believes Redonda has the potential to become a significant long-term exploration asset as systematic exploration continues to evaluate the scale and continuity of the mineralized system.

In addition, Copper One holds an option to earn up to a 100% interest in the Redhill Property, located south of Ashcroft, British Columbia, adjacent to the Trans-Canada Highway. The 4,736-hectare (11,704-acre) property hosts volcanogenic massive sulphide (VMS) mineralization prospective for copper, zinc, silver and gold, while also demonstrating potential for epithermal gold mineralization.

Subject to completion of the Proposed Transaction, Copper One will also own the Sport Project in Utah, expanding the Company's portfolio of North American copper exploration assets.

Copper One is advancing its portfolio through systematic exploration, modern geological modelling, and disciplined technical evaluation. The Company remains committed to responsible exploration practices, technical transparency, and creating long-term shareholder value through disciplined exploration and the advancement of critical metals projects across North America.

All stakeholders are encouraged to follow the Company on its social media profiles on  LinkedIn  and  X.com , and to subscribe for updates at  https://copperone.com/

Neither the Canadian Securities Exchange nor its Market Regulator (as that term is defined in the policies of the Canadian Securities Exchange) accepts responsibility for the adequacy or accuracy of this release.

On Behalf of Copper One Resources Corp.

“David Greenway”

David C. Greenway
President & CEO

For further information, please contact:

Brent Rusin

Corporate Communications

E: info@copperone.com

P: 1 (236) 788-0643

VISIT OUR WEBSITE FOR MORE DETAILS

www.copperone.com

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Forward-Looking Information

This news release contains “forward-looking information” and “forward-looking statements” within the meaning of applicable Canadian securities laws (collectively, “forward-looking information”). Forward-looking information in this news release includes, but is not limited to, statements regarding: the proposed acquisition of Rooinek Mining Corp. (the “Proposed Transaction”) and the Sport Project; the completion and timing of the Proposed Transaction; the Company’s plans to conduct additional surface sampling, geological mapping and geophysical surveys at the Sport Project; the completion and results of gold fire assays on samples collected during the reconnaissance program; the interpretation of geological, geochemical and geophysical data; the potential for mineralization identified at surface to provide vectors toward additional or concealed copper mineralization; the potential presence of an intrusive-related copper system; the identification and prioritization of future exploration targets; and the Company’s future exploration plans and activities at the Sport Project.

Forward-looking information is based on management’s current expectations, estimates, projections, assumptions and beliefs as of the date of this news release. Such assumptions include, among other things, that the conditions to completion of the Proposed Transaction will be satisfied; that required regulatory, corporate and other approvals will be obtained; that the Company will have sufficient financial and technical resources to carry out its planned exploration activities; that contractors, personnel and equipment will be available when required; that pending gold fire-assay results will be received within anticipated timelines; and that geological, geochemical and geophysical information will be capable of being interpreted in a manner that assists in identifying and prioritizing future exploration targets.

Forward-looking information is subject to known and unknown risks, uncertainties and other factors that may cause actual results, performance or achievements to differ materially from those expressed or implied by such forward-looking information. These risks and uncertainties include, but are not limited to: the risk that the Proposed Transaction may not be completed on the terms contemplated or at all; the inability to obtain required regulatory, corporate or other approvals; changes to the terms or timing of the Proposed Transaction; exploration results that do not support the Company’s current geological interpretations; the possibility that follow-up exploration does not identify economically significant mineralization; uncertainty regarding the continuity, extent, grade and geometry of mineralization; risks inherent in mineral exploration; permitting and regulatory risks; availability of financing, personnel, contractors and equipment; fluctuations in commodity prices and financial markets; and general economic, market and business conditions.

The Company’s acquisition of the Sport Project remains subject to completion of the proposed acquisition of Rooinek Mining Corp., including the satisfaction of customary closing conditions and, where required, applicable stock exchange and regulatory approvals. There can be no assurance that the proposed acquisition will be completed as contemplated or at all. There can also be no assurance that the results of the reconnaissance program are indicative of the presence, continuity, extent or grade of mineralization elsewhere on the Sport Project, or that planned follow-up exploration will result in the discovery or delineation of a mineral resource.

Although the Company believes that the assumptions and expectations reflected in such forward-looking information are reasonable, undue reliance should not be placed on forward-looking information because the Company can give no assurance that such expectations will prove to be correct. The forward-looking information contained in this news release is made as of the date hereof, and the Company disclaims any intention or obligation to update or revise any forward-looking information, whether as a result of new information, future events or otherwise, except as required by applicable securities laws.

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