Northern Superior Announces the Ratio for the Distribution of the Common Shares in the Capital of ONGold Resources Ltd.

Press Release

Toronto, Ontario, Canada, December 17, 2025 – Northern Superior Resources Inc. (“Northern Superior” or the “Company”) (TSXV: SUP) (OTCQB: NSUPF) (GR: D9M1) is pleased to announce that the distribution to Northern Superior’s shareholders of all the common shares in the capital of ONGold Resources Ltd. (the “ONAU Shares”) held by Northern Superior will be effected on the basis of a distribution ratio of 0.19574366 ONAU Share for each issued and outstanding common share of Northern Superior. Subject to certain customary closing conditions, the distribution is expected to occur on December 19, 2025, concurrently with the closing of the previously-announced statutory plan of arrangement with  IAMGOLD Corporation under Division 5 of Part 9 of the Business Corporations Act (British Columbia) (the “Arrangement”). Pursuant to the Arrangement, the record date for purposes of the distribution of the ONAU Shares will be December 18, 2025.

About Northern Superior Resources Inc.

Northern Superior is a gold exploration company focused on the Chibougamau Camp in Québec, Canada. The Company has consolidated the largest land package in the region, with total landholdings currently exceeding 70,000 hectares. The main properties include Philibert, Hazeur (adjacent to Philibert), Lac Surprise (adjacent to Nelligan), Chevrier, Croteau, Monster Lake East, and Monster Lake West. Northern Superior also owns 48.5% of ONGold which is advancing promising exploration assets in Northern Ontario and Manitoba, including the district scale TPK Project and Monument Bay; Agnico Eagle Mines Limited owns 13% of ONGold.

Northern Superior is a reporting issuer in British Columbia, Alberta, Ontario and Québec, and trades on the TSX Venture Exchange under the symbol SUP and the OTCQB Venture Market under the symbol NSUPF. For further information, please refer to the Company’s website at www.nsuperior.com or the Company’s profile on SEDAR+ at www.sedarplus.ca.

About IAMGOLD

IAMGOLD is an intermediate gold producer and developer based in Canada with operating mines in North America and West Africa, including Côté Gold (Canada), Westwood (Canada) and Essakane (Burkina Faso). The Côté Gold Mine achieved full nameplate in June 2025 and has the potential to be among the largest gold mines in Canada. IAMGOLD operates Côté in partnership with Sumitomo Metal Mining Co. Ltd. In addition, IAMGOLD has an established portfolio of early stage and advanced exploration projects within high potential mining districts. IAMGOLD employs approximately 3,700 people and is committed to maintaining its culture of accountable mining through high standards of Environmental, Social and Governance practices. IAMGOLD is listed on the New York Stock Exchange (NYSE: IAG) and the Toronto Stock Exchange (TSX: IMG).

Northern Superior Resources Inc. on Behalf of the Board of Directors

Simon Marcotte, CFA, President and Chief Executive Officer

Contact Information

Katrina Damouni

Director – Corporate Development

Tel: +44 7795 128583 (Mobile/WhatsApp)

info@nsuperior.com

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