Copper One acquires 100% of Majuba Hill copper-silver-gold project

Vancouver, BC – June 19 , 2026 - TheNewswire – Copper One Resources Corp. ("Copper One" or the "Company") (CSE:CEXY | OTCID:CEXYF | FSE:IW8 | WKN: A42AGR ) is pleased to announce that it has entered into an amendment agreement (the “Agreement” ) and commenced closing process to acquire 100% interest in the Majuba Hill Copper-Silver-Gold Project ( "Majuba Hill" or the "Project" ) located in Pershing County, Nevada, a well-established mining jurisdiction in the United States. The transaction terms set out in the Agreement (the "Transaction Terms" ) provide for the acquisition of the Project for a cash purchase price of US$1,300,000. Compared to the consideration contemplated under the original option framework, the amended Transaction Terms represent a reduction of approximately US$2.7 million (approximately C$3.8 million) in the purchase price payable by the Company.

Majuba Hill is Copper One's American flagship copper asset. The Company believes full control of the Project is an important step toward advancing a Nevada-based copper opportunity at a time when the United States and its allies are increasingly focused on secure, domestic and responsible sources of copper for power, infrastructure, electrification, advanced manufacturing, data centers and national security supply chains. The acquisition will provide Copper One with 100% ownership of Majuba Hill, subject to the completion of closing documentation and customary closing conditions.

The Company believes that securing a 100% interest in the Project will provide greater flexibility to advance exploration activities, refine drill targeting, evaluate potential strategic alternatives, and position Majuba Hill within an evolving North American copper market. "We are pleased to move toward securing 100% ownership of the Majuba Hill Project," said David Greenway, President and Chief Executive Officer of Copper One Resources Corp. "Full ownership of Majuba Hill provides the Company with increased flexibility to advance exploration activities, refine drill targeting, and evaluate future development opportunities. We believe the Project represents a significant exploration opportunity in Nevada, a leading mining jurisdiction, at a time when global demand for copper continues to be driven by electrification, power infrastructure, advanced manufacturing, data centers and energy transition initiatives.

As concerns regarding a looming copper shortage continue to be discussed across the industry, we believe that consolidating ownership of Majuba Hill strengthens Copper One's position to advance the Project and pursue long-term value creation for shareholders." Transaction Summary Pursuant to the amendment, the purchase price payable on exercise of the option has been amended to US$1,300,000 in cash. The closing is expected to be completed pursuant to escrow instructions and related conveyance documents, including an assignment and deed with reservation of royalty, bill of sale and related closing deliverables. Upon completion, the Project is expected to be held through BAM BAM Nevada Inc., a Nevada corporation and wholly owned subsidiary of Copper One.