Highland Copper Company Inc. (TSX-V: HI) (OTCQB: HDRSF) is pleased to announce, further to its press release of November 25, 2025, that it has signed a definitive Membership Interest Purchase Agreement with its joint venture partner, Kinterra Copper USA LLC, for the sale of the Company’s 34% interest in the White Pine North Project for aggregate consideration of approximately US$30 million.

The total consideration consists of US$18.3 million in cash, net of the outstanding principal and accrued interest on the loan made by Kinterra to the Company’s wholly owned subsidiary, Upper Peninsula Copper Holdings Inc., which is expected to total approximately US$11.7 million at closing. In addition, the parties have agreed to suspend cash calls under the White Pine joint operating agreement. The Company will not be obligated to make cash calls through closing, and any such cash calls will be recorded and allocated between Kinterra and the Company only if the transaction does not close.

Proceeds from the sale of White Pine will be used to fund the Company’s planned corporate and Copperwood Project activities, eliminate existing debt, and streamline its overall corporate structure.

The parties intend to work towards closing of the Transaction in January 2026, with an outside date of February 27, 2026. Completion of the Transaction remains subject to customary closing conditions, including approval of the TSX Venture Exchange, as well as the discharge of various security interests held by existing streaming counterparties on White Pine and all requisite third-party consents and releases having been obtained.

Moelis & Company LLC is acting as exclusive financial advisor and McMillan LLP is acting as legal advisor to the Company in connection with the Transaction.

About Highland Copper Company

Highland Copper Company Inc. is a Canadian company focused on exploring and developing copper projects in the Upper Peninsula of Michigan, U.S.A. The Company owns the Copperwood deposit through long-term mineral leases and 34% of the White Pine North project through a joint venture with Kinterra Copper USA LLC. The Company also owns surface rights securing access to the Copperwood deposit and providing space for infrastructure at Copperwood as required. The Company has 738,188,122 common shares issued and outstanding.