Northern Dynasty Minerals Ltd. (TSX:NDM)(NYSE American:NAK) ('Northern Dynasty' or the 'Company' or 'NDM') reminds shareholders of the upcoming deadline to vote at the Company's Annual General Meeting (the 'Meeting'), which is scheduled to be held at the Fairmont Hotel Vancouver, 900 West Georgia Street, Vancouver, British Columbia, on June 30, 2023 at 10:00 a.m., local time.

The Board of Directors of Northern Dynasty recommends that Shareholders vote in favour of all the proposed items

At the Meeting, Shareholders will be asked to elect the board of directors and appoint the auditors for the ensuing year.

YOUR VOTE IS IMPORTANT - PLEASE VOTE TODAY

The proxy voting deadline is 10:00 am PDT on Wednesday, June 28, 2023

Questions & Voting

Shareholders are encouraged to vote today via the internet or telephone using the control number found on the proxy or voting instruction form that was mailed to you to ensure your vote is received in a timely manner.

Registered Shareholders

Beneficial Shareholders

Common Shares held in own name and represented by a physical certificate or DRS.

Common Shares held with a broker, bank or other intermediary.

Contact:

Tel: 1-866-732-8683

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.

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