Welcome to our dedicated page for Gunnison Copper news (Ticker: GCUMF), a resource for investors and traders seeking the latest updates and insights on Gunnison Copper stock.
Gunnison Copper Corp. reports developments tied to its Arizona copper asset base, including the 100%-owned Gunnison Copper Project in the Cochise Mining District and activity at the Johnson Camp Mine. Company updates commonly cover NI 43-101 technical reports, preliminary economic assessments, open-pit and heap leach SXEW development plans, copper cathode production, and the use of Nuton bioleaching technology at Johnson Camp.
Recurring news also includes balance-sheet actions, shareholder and board changes, leadership appointments, permitting and technical work, and participation in U.S. critical-minerals supply-chain initiatives. Gunnison describes itself as a multi-asset pure-play copper developer and producer controlling deposits in the Southern Arizona Copper Belt.
Gunnison Copper (OTCQB: GCUMF) promoted Craig Hallworth to President and CEO, effective May 15, 2026, as part of a planned leadership transition from long-time CEO Stephen Twyerould, who remains on the board.
The company strengthened its leadership in permitting, legal, investor relations, finance, metallurgy, and geology to advance the Gunnison Copper Project toward a targeted Pre-Feasibility Study completion in Q2 2028 and related permit amendments.
Gunnison Copper (OTCQB: GCUMF) reported that Lunasonde completed an airborne aGRT survey over portions of the Cochise Mining District to produce high-resolution subsurface images for drill-target generation. Data processing is underway and results will be integrated with existing datasets to prioritize targets for 2026 exploration.
The company also signed a buyback option with Triple Flag and Altius to reduce royalties and terminate an expansion option, exercisable as a package in connection with a qualifying change-of-control by March 31, 2028, for US$65 million.
Gunnison Copper (OTCQB: GCUMF) joined the U.S. Department of War Defense Industrial Base Consortium (DIBC) on April 16, 2026, to expand access to non-dilutive funding, strategic partnerships, and programs supporting domestic critical-minerals supply chains.
Gunnison highlights a 2025 Johnson Camp restart in under 18 months, a $13.9M Section 48C award, and its flagship project expected to produce up to 174 million pounds of copper annually.
Gunnison Copper (OTCQB: GCUMF) filed a 2026 PEA with an effective date of March 18, 2026 showing robust economics: after-tax NPV8 ≈ US$1.96B, IRR 22.5%, and 3.9-year payback at a base copper price of $4.60/lb.
The open-pit heap-leach SX/EW project projects average annual production of 174M lbs Cu (first 15 years), LOM recovered copper of 3.187 billion lbs, initial capital of $1,556M, 21-year life, and AISC of $2.05/lb.
Gunnison Copper (OTCQB: GCUMF) announced the retirement of director Michael Haworth effective March 11, 2026, following the distribution and secondary private placement of Greenstone-held shares as that fund winds down.
The move follows Greenstone Resources II's exit and has broadened Gunnison's institutional shareholder base; the company intends to add new independent directors to strengthen the board.
Gunnison Copper (OTCQB: GCUMF) released an updated NI 43-101 PEA for the 100%‑owned Gunnison Copper Project (Arizona) reporting an after‑tax NPV8 of $1,952M (~US$2.0B), a 22.7% IRR and a 3.9‑year payback at $4.60/lb copper. The plan targets 3.2 billion lbs recovered over a 21‑year mine life and average annual production of 174 million lbs in years 1–15.
Key economics: initial capex $1,544M, cash cost $1.69/lb, AISC $2.06/lb, cement coproduct adds $130M NPV, and the report includes inferred resources (preliminary assessment).
Gunnison Copper (OTCQB: GCUMF) announced that Greenstone Resources II LP and affiliated funds (the "Greenstone Group") has engaged Paradigm Capital to sell up to 143,208,937 common shares (33.88% ownership) via a best-efforts institutional offering.
Completion is subject to share purchase agreements and is expected on or by 17 February 2026. After the Offering, the Greenstone Group will hold no common shares.
Gunnison Copper (OTCQB: GCUMF) announced it has fully eliminated the Nebari Natural Resources Credit Fund I LP principal, reducing Nebari principal from US$15.0 million to zero. The final step comprised conversions totaling US$4.75 million at a conversion price of US$0.2097 per share (C$0.30), resulting in the issuance of 22,651,407 common shares. Combined with a previously announced US$7.3 million repayment of non-convertible debt, all principal under the Second ARCA has been repaid or converted. Gunnison will repay a partial month of interest and is working to obtain release of the related security documents.
This milestone is presented as strengthening the company’s balance sheet and supporting its equity-based capital structure ahead of construction of the Gunnison Project.
Gunnison Copper (OTCQB: GCUMF) said Rio Tinto and Amazon Web Services will collaborate to bring the first Nuton™ copper produced at Gunnison's Johnson Camp mine into AWS U.S. data centers after a first industrial-scale deployment in December 2025. AWS will also provide cloud data and analytics to optimise Nuton's modular bioleaching system, which Produces 99.99% pure copper cathode at the mine gate and aims to avoid concentrators, smelters and refineries. The company says Nuton is projected to use substantially less water and have lower carbon emissions versus conventional processing and to recover value from material previously classed as waste.
Gunnison Copper (OTCQB: GCUMF) entered a Collaboration Framework Agreement with Lunasonde to deploy airborne Georadiotomography (aGRT) for an initial high-resolution subsurface survey over part of Gunnison's Cochise Mining District in southern Arizona.
The program includes test and calibration flights, data processing and 3D subsurface imaging of anomalies that may host critical minerals. Gunnison said results will be assessed with existing technical data to consider future use of aGRT.
Separately, Nebari converted US$500,000 of convertible principal at US$0.2097 per share, resulting in issuance of 2,384,358 common shares, reducing the Second ARCA principal and potentially enabling full repayment if proceeds from previously announced 48C tax credits are realized.