Mr. Brooke Clements reports

NORTH SHORE BEGINS DRILLING AT RIO PUERCO

North Shore Uranium Ltd. has commenced its first drill program at its Rio Puerco uranium project in the Grants uranium district of northwestern New Mexico. To date, the company's drill contractor Harris Exploration Drilling and Associates has completed a total of three rotary drill holes totalling 625 metres (2,050 feet). North Shore plans to drill up to 26 holes totalling approximately 5,975 m (19,600 ft). The main objective of the program is to begin validating and further evaluating historical exploration data generated by the Kerr-McGee Mining Corp. in the 1960s and 1970s. Each of the sites selected for drilling is a twin of a rotary hole drilled by Kerr-McGee in the 1970s. Details of the 2026 drill program, uranium mineralization and work history at Rio Puerco were summarized by the company on April 9, 2026.

As announced on May 26, 2026, the company received approval of its minimal impact exploration operation permit from the state of New Mexico and its notice of intent to conduct mineral exploration activities from the Bureau of Land Management in May.

Brooke Clements, president and chief executive officer of North Shore, stated: "We are excited to see the drill turning at Rio Puerco and the program running smoothly. The data we acquire from this program will help us do a detailed assessment of the uranium mineralization at the project. With its rich uranium mining history and an abundance of uranium resources, we think that New Mexico has the potential to become a leader in the USA's push to produce more uranium in the future. On June 2, Urenco, one of two uranium enrichment facilities in the USA and the largest, located in New Mexico, announced a major expansion."

Qualified person

Brooke Clements, MSc, PGeol, a qualified person as defined by National Instrument 43-101 -- Standards of Disclosure for Mineral Projects, and the president and CEO of North Shore, has reviewed and approved of the scientific and technical disclosure in this press release.

About North Shore Uranium Ltd.

The nuclear power industry is undergoing increased development to meet CO2 (carbon dioxide) emission-reduction goals and the needs of new power-intensive technologies like AI (artificial intelligence). In this environment, discoveries of uranium deposits may be significant, especially in established uranium-producing jurisdictions like Saskatchewan and New Mexico. North Shore is focused on advancing exploration for uranium deposits. The company is working to achieve this goal by exploring Rio Puerco in the Grants uranium district of New Mexico, and its Falcon and West Bear properties at the eastern margin of the Athabasca basin in Saskatchewan. In addition, the company continues to evaluate quality opportunities in the United States and Canada to complement its portfolio of uranium properties.

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