Mr. Brooke Clements reports

NORTH SHORE RECEIVES EXPLORATION PERMITS FOR RIO PUERCO URANIUM PROJECT AND ANNOUNCES MARKETING ENGAGEMENT

North Shore Uranium Ltd. has received the permits required to commence its first drill program at its Rio Puerco uranium project in the Grants uranium district of northwestern New Mexico.

The company has 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 at Rio Puerco from the Bureau of Land Management. North Shore's drill contractor Harris Exploration Drilling and Associates has mobilized to the project and the company expects to commence its initial Rio Puerco drill program in the near term. North Shore plans to drill up to 26 holes and 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. Details of the 2026 drill program were reported on April 9, 2026.

Brooke Clements, president and chief executive officer of North Shore, stated: "We look forward to getting the drill turning at Rio Puerco soon. The Rio Puerco project represents an exciting growth opportunity for North Shore and we look forward to validating the historical work completed by Kerr-McGee and confirming the significant exploration potential of the project. World energy demand is increasing and the United States has indicated an intention to increase its domestic uranium supply, and we believe this supports advancing a project like Rio Puerco."

Marketing engagement

North Shore is pleased to announce that it has entered into a media and communications services agreement (the ECP agreement) with Equity Catalyst Partners LLC, under the terms of which ECP will provide media relations engagement, public disclosure management, assistance with press release distribution and other related advisory functions.

On May 25, 2026, the company entered into the ECP agreement for a six-month term, which can be terminated with 30 days of written notice delivered to the other party, or at such other time and in such manner as may be mutually agreed upon by the parties. Monthly payments of $7,500 (U.S.) will be paid at the end of each month, with the first month fee paid upon signing. All fees payable by the company to ECP, pursuant to the ECP agreement, will be paid out of general working capital of the company. The fees are for services only and are not contingent on the results of the services, the market price of the company's securities or the volume of trading in such securities.

ECP is headquartered in Washington, D.C., United States. The company and ECP act at arm's length, and ECP has no present interest, directly or indirectly, in the company or its securities, or any right or present intent to acquire such an interest. There are no performance factors contained in the ECP agreement and ECP will not receive common shares or stock options as compensation.

The ECP agreement is subject to approval by the TSX Venture Exchange.

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 chief executive officer 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.

We seek Safe Harbor.