Mr. Stephen Dunn reports

US COPPER STAKES ADDITIONAL CLAIMS TO ACCOMMODATE FUTURE SURFACE FACILITIES AT THE MOONLIGHT-SUPERIOR COPPER PROJECT

U.S. Copper Corp. has staked 54 new federal claims totalling 1,104 acres adjacent to its existing federal and patented claims at its Moonlight-Superior copper project, located in Plumas county, California.

The new claims will increase the total land package at Moonlight Superior to 7,053 acres. These new claims are intended to provide the additional acreage necessary to support the anticipated development and operations plan for the Moonlight-Superior copper project, including plant infrastructure, water treatment and waste rock stockpiles.

Stephen Dunn, chief executive officer of U.S. Copper, commented: "We are pleased to have secured these additional claims for the future mine surface facilities -- an essential component to our overall mine plan as we prepare for our prefeasibility study in fall, 2026, and the launch of the permitting process. The Moonlight-Superior copper project would become a cornerstone of economic growth, prosperity and community development in the Plumas county region for more than two decades, providing career opportunities and family-supporting employment for years to come."

"Copper is a key element in a wide range of energy technologies and is designated as a critical mineral by the government the United States. The recent National Security Strategy, released on Dec. 4 by the Whitehouse, states: "The United States must never be dependent on any outside power for core components -- from raw materials to parts to finished products -- necessary to the nation's defense or economy. We must resecure our own independent and reliable access to the goods we need to defend ourselves and preserve our way of life. This will require expanding American access to critical minerals and materials ..."

Moonlight would become an integral supplier of copper metal to the U.S. domestic market with average annual production of 60 million pounds of copper and 1.7 billion pounds over the life of mine. Copper is a critical material for an extensive range of important applications ranging from renewable power generation to electric vehicles. As such, it is vital that the United States has a strong and viable domestic source of copper supply.

The company would also like to report that the metallurgical studies previously announced (see news release of Sept. 4, 2025) have begun and are scheduled to wrap up by April, 2026, with partial results to be released beginning in February, 2026. These results will be used to design a drill program to provide additional metallurgical samples necessary for the planned prefeasibility study.

In addition, the company is pleased to announce that it has entered into a marketing agreement with Epstein Research (ER), led by Peter Epstein, pursuant to which Mr. Epstein will provide investor relations services to the company in consideration for an aggregate of $6,000 (U.S.) at a rate of $2,000 (U.S.) per month for an initial term of three months from Nov. 1, 2025, to Jan. 31, 2026, subject to approval by the TSX Venture Exchange.

In accordance with the terms of the agreement, ER will work with the company on posting on social media and producing monthly articles and commentary designed to develop a positive and productive profile for the company.

Mr. Epstein beneficially owns 200,000 shares of the company (approximately 0.13 per cent of the outstanding shares of U.S. Copper) and does not have any rights to acquire additional securities of the company. Mr. Epstein operates the Epstein Research website, is an arm's-length party to the company and has over 20 years in buy-side analyst roles.

About U.S. Copper Corp.

U.S. Copper controls approximately 10 square miles of patented and unpatented federal mining claims in the Light's Creek copper district in Plumas county in northeastern California -- essentially, the entire district. The district contains substantial copper sulfide and copper oxide resources in three company-owned deposits -- Moonlight, Superior and Engels -- as well as several partially tested and untested exploration targets.

The Superior and Engels mines operated from about 1915 to 1930, producing over 161 million pounds of copper, with silver and gold credits, from over four million tons of rock containing 2.2 per cent copper.

The Moonlight deposit was discovered by Placer Amex during the 1960s and a resource was calculated after the drilling of over 400 holes. A development decision was made but then put on hold in 1972 when copper prices were weak.

U.S. Copper has owned the Moonlight-Superior project since 2013 and has advanced it with three different drill programs and a number of engineering studies.

U.S. Copper recently reported an after-tax NPV (net present value) of $1.075-billion (U.S.) in a preliminary economic assessment (PEA) prepared by Global Resource Engineering Ltd. (GRE), dated Dec. 16, 2024, with a life-of-mine production of 1.8 billion pounds of copper (see news release dated Jan. 6, 2025).

GRE calculated a new mineral resource for the purposes of this PEA that included all recent drill programs on the property. This resource is summarized in the attached table.

Further details of this resource and the preliminary economic assessment NI 43-101 technical report on the Moonlight-Superior project, Plumas county, California, with an effective date of Dec. 16, 2024, can be found on SEDAR+ or at the company's website.

The PEA is preliminary in nature and includes inferred mineral resources that are considered too speculative geologically to have the economic considerations applied to them that would enable them to be categorized as mineral reserves under CIM definition standards. Readers are advised that there is no certainty that the results projected in this preliminary economic assessment will be realized.

We seek Safe Harbor.