Gunnison Copper Repays US$7.3 Million

Major Deleveraging Milestone Achieved as Company Moves to Fully Eliminate Nebari Debt

Phoenix, Arizona--(Newsfile Corp. - December 1, 2025) - Gunnison Copper Corp. (TSX: GCU) (OTCQB: GCUMF) (FSE: 3XS0) ("Gunnison" or the "Company") is pleased to announce that it has fully repaid the US$7.3 million non-convertible principal portion of the Second Amended and Restated Credit Agreement ("Second ARCA") with Nebari Natural Resources Credit Fund I LP ("Nebari"). All amounts in this news release are in United States dollars unless otherwise noted.

Following this repayment, the only remaining balance outstanding under the Second ARCA is the $5.25 million convertible principal amount, which Nebari retains the right to convert to equity under the previously announced terms and is less than the net proceeds expected through the monetization of the 48C tax credits.

"Reducing and ultimately eliminating debt has been a core objective of management," said Craig Hallworth, Senior Vice President and Chief Financial Officer of Gunnison Copper. "Fully repaying the non-convertible portion of the Nebari financing marks a major step forward in strengthening our balance sheet and capital structure. This achievement enhances our financial flexibility and advances our goal of fully retiring the remaining Nebari secured debt."