Gunnison Copper Corp. (formerly Excelsior Mining Corp.) is a copper development company focused on the acquisition, exploration, and development of copper mineral properties in Arizona, USA. The company's principal business involves the construction and operation of copper mines, specifically targeting the production of finished copper cathodes for the US domestic supply chain. Its key assets include the Gunnison Copper Project, designed as a large-scale open pit operation, and the Johnson Camp Mine, which has been expanded and restarted to demonstrate sulfide copper heap leaching technology. Gunnison operates in partnership with Nuton LLC, a Rio Tinto venture, for the Johnson Camp Mine operations. The company was incorporated in 2005 and trades on the Toronto Stock Exchange.

Summarised from the company's own disclosures, fiscal year ended Dec 2025

Industry Copper Homepage gunnisoncopper.com
Sector Basic Materials IR page gunnisoncopper.com/investors
Tags
copper mining, open pit mining, copper cathodes, heap leaching, mineral exploration, copper development, Gunnison Copper Project, Johnson Camp Mine, Nuton LLC
Press page gunnisoncopper.com/news/news-2026

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Market cap C$ 232.538M
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Figure FY 2025 FY 2024 FY 2023 FY 2022 FY 2021 FY 2020 FY 2019 FY 2018
Assets 314.492M 137.932M 116.408M 118.761M — 131.877M 128.819M —
Net profit — — -28.959M 34.879M -69.653M -20.264M -23.88M -12.135M

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Gunnison Copper Corp. (ticker GCU), listed in Canada.