Northern Dynasty Reports Oral Arguments Held

About this update from Northern Dynasty Minerals Ltd.

VANCOUVER, BC / ACCESS Newswire / June 26, 2026 / Northern Dynasty Minerals Ltd. (TSX:NDM)(NYSE American:NAK) ("Northern Dynasty" or the "Company") announces that oral arguments were held on June 25, 2026 in Alaska Federal District Court on its case seeking withdrawal of the Environmental Protection Agency's ("EPA") veto. "The matter is now ripe for decision by the Federal District Court in Alaska," Ron Thiessen, Northern Dynasty President and CEO commented, "This is an important time for the project, and we look forward to the judge's decision." About Northern Dynasty Minerals Ltd. Northern Dynasty is a mineral exploration and development company based in Vancouver, Canada. Northern Dynasty's principal asset, owned through its wholly owned Alaska-based U.S. subsidiary, Pebble Limited Partnership, is a 100% interest in a contiguous block of 1,840 mineral claims in Southwest Alaska, including the Pebble deposit, located 200 miles from Anchorage and 125 miles from Bristol Bay. The Pebble Partnership is the proponent of the Pebble Project. For further details on Northern Dynasty and the Pebble Project, please visit the Company's website at www.northerndynastyminerals.com or contact Investor services at (604) 684-6365 or within North America at 1-800-667-2114. Public filings, which include forward looking information cautionary language and risk factor disclosure regarding the Company and the Pebble Project can be found in Canada at www.sedarplus.ca and in the United States at www.sec.gov. Ronald W. ThiessenPresident & CEO U.S. Media Contact:Dan Gagnier, Gagnier Communications (646) 569-5897 Forward Looking Information and other Cautionary Factors This document includes certain statements that may be deemed "forward-looking statements" under the United States Private Securities Litigation Reform Act of 1995 and under applicable provisions of Canadian provincial securities laws. All statements in this document, other than statements of historical facts are forward-looking statements. Additional forward looking statements made by the Company under its continuous disclosure obligations include statements regarding (i) the development plan for the Pebble Project (ii) the right-sizing and de-risking of the Pebble Project, (iii) the design and operating parameters for the Pebble Project development plan, including projected capital and operating costs, (iv) the...

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