NIOB to Feature Seigneurie Drill Core at THE Mining Investment Event

Press Release

Vancouver, British Columbia – May 26, 2026 – North American Niobium and Critical Minerals Corp. (CSE: NIOB) (FSE: KS82.F) (OTCQB: NIOMF) is set to introduce investors from Québec and beyond to its highly prospective Québec-based niobium and rare earth programs at THE Mining Investment Event. One of Canada’s only tier one global mining investments conferences, the invitation-only event will be held June 1-4, 2026, at the Centre des congrès de Québec in Québec City. In addition to participating in the one-on-one meeting program, NIOB will display drill core in the core shack during THE Event’s networking galas.

“Québec is the jurisdiction we know best, so we are keen to celebrate progress at our Québec projects with a Québec audience,” said Murray Nye, NIOB’s Chief Executive Officer. “We’re also excited to showcase core from the 1.5-kilometre pegmatite system at Seigneurie, where we hit the fourth widest pegmatite intersection ever publicly disclosed.”

Highlights

• Event: THE Mining Investment Event in Quebec City, June 1 to 4, 2026, at the Centre des congrès de Québec; one of Quebec’s flagship gatherings for mineral exploration and mining companies, institutional capital, family offices, and government partners.
• One-on-one investor program: Members of NIOB management will participate in the conference’s one-on-one investor meeting program; investors and capital markets participants interested in meeting with NIOB are invited to schedule a time through the conference meeting platform.
• Core shack: The Company will host a core shack at the event featuring drill core from the Seigneurie Project, providing delegates with a first-hand look at the pegmatite-syenite system recently confirmed to extend over 1.5 kilometres east-west and 800 metres north-south.
• Coffee break sponsorship: NIOB is sponsoring a coffee break for conference delegates.
• Attending for NIOB: Murray Nye, Chief Executive Officer, and Clyde McMillan, Vice President of Exploration, along with other members of the Company’s team.
• Discussion topics: the Seigneurie pegmatite system, the recently mobilized diamond drill program at Bardy and Blanchette, the La Tuque district claim package, and NIOB’s broader Québec critical minerals strategy.

Why Québec Matters for NIOB

Québec hosts NIOB’s two flagship project areas—the Seigneurie Project near Wemotaci and the Bardy and Blanchette properties northwest of La Tuque—as well as the Company’s La Tuque district claim package, all targeting niobium and rare earth element occurrences in alkaline intrusive settings identified from Government of Québec geochemical datasets. The Mining Event provides a direct line to investors with deep familiarity in the jurisdiction at a stage when results from Seigneurie drilling are being confirmed and the Bardy and Blanchette diamond drill program has just mobilized.

About THE Mining Investment Event

THE Mining Investment Event in Quebec City is an annual gathering focused on Quebec’s mineral exploration and mining sector, bringing together public and private issuers, institutional capital, sell-side analysts, project generators, service providers, and government and First Nations partners. The invite-only conference features one-on-one meetings, interviews and panel discussions with industry leaders, networking events, and a core shack. It is one of the premiere mining investment conferences in Canada, and a principal venues for the Québec mining investment community to engage directly with issuers active in the province and elsewhere.

Investors, analysts, and capital markets participants attending the conference and interested in meeting with NIOB at the conference are invited to book a meeting through the conference’s one-on-one investor meeting platform.

ABOUT NORTH AMERICAN NIOBIUM AND CRITICAL MINERALS CORP.

North American Niobium and Critical Minerals Corp. is a North American mineral exploration company focused on the acquisition and development of precious, base, and critical mineral assets. Its portfolio includes the Silver Lake property in British Columbia’s Omineca Mining Division and a district-scale land package covering 29,936 hectares in Québec’s Grenville Province. The Québec properties host rare earth element, niobium, and nickel-copper occurrences, expanding the Company’s footprint into critical minerals that are strategically important for energy and defense applications.

ON BEHALF OF THE BOARD OF DIRECTORS:
Murray Nye
Chief Executive Officer
info@northamericanniobium.com
+1 (647) 984-4204

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