Mr. Ronald Thiessen reports

NORTHERN DYNASTY: TIMELINE UPDATES FOR U.S. ARMY CORPS TO COMMENT ON FUTURE PLANS AND U.S. SUPREME COURT REVIEW OF ALASKA CASE

Northern Dynasty Minerals Ltd.'s 100-per-cent-owned United States-based subsidiary, Pebble Limited Partnership, has been informed that the Alaska district of the U.S. Army Corps of Engineers (USACE) was granted a fifth extension of the deadline to communicate the plan on how the district plans to move forward with its reconsideration of the administrative record after remand. The division commander approved the request for the 60-day extension and the revised deadline is now Nov. 27, 2023.

As reported by the company on May 1, 2023, the USACE Pacific Ocean division had given the Alaska district 45 days to review the appeal decision and notify the parties how it plans to proceed in light of the Environmental Protection Agency's final determination. The original deadline expired on Friday, June 9, 2023, with subsequent extensions to June 23, June 29, July 28 and Sept. 26, 2023, prior to this most recent extension.

In addition, the U.S. government has asked the U.S. Supreme Court to extend the filing deadline for its brief, related to the State of Alaska's action opposing the EPA's final determination, until early November. As a result, the company now anticipates that the Supreme Court will decide if it will hear the State of Alaska's case by year-end.

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-per-cent 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.