Mr. Murray Nye reports

NORTH AMERICAN NIOBIUM AND CRITICAL MINERALS CORP. COMPLETES PHASE 1 FALL PROSPECTING PROGRAM; CARBONATITE AND PEGMATITE TARGETS IDENTIFIED ACROSS QUEBEC PROPERTIES

North American Niobium and Critical Minerals Corp. has completed its phase 1 fall 2025 prospecting, mapping and channel sampling program across four of its 100-per-cent-owned properties in Quebec, including the Seigneurie, Bardy, Blanchette and Sabot properties. Fieldwork was conducted from Oct. 13 to Nov. 5, 2025, with crews continuing to access additional outcrops as conditions permit.

The company's 2025 program aimed to verify and build upon historical prospecting results, including those previously reported for the Blanchette, Seigneurie and Bardy showings. Field crews collected a total of 262 grab and channel samples, including 94.5 metres of channel sampling on the Seigneurie property. The Seigneurie property was recently extended to the southwest to include a historical rare-earth-element-anomalous carbonatite subcrop identified by the Quebec Ministry of Natural Resources and Forestry in 2015.

Work was completed by a five-person technical team consisting of three prospectors and two geologists from Grassroots Prospecting and Target Generation Inc. and McMillan Geosciences Inc.

Field program highlights:

• Carbonatite boulders and subcrops discovered at Blanchette, spatially associated with an interpreted circular magnetic feature visible on the first vertical derivative regional airborne geophysical map;
• Numerous pegmatites with REE potential confirmed at several locations on the Seigneurie property;
• 262 grab and channel samples collected across all four properties; assays pending, which include 94.5 metres of channel sampling completed on Seigneurie (average sample length 1.5 metres);
• Field observations identified a diverse suite of lithologies, including pegmatites, carbonatites, mafic intrusives, volcanics, metasedimentary units and gneiss.

Program summary

The fall 2025 prospecting campaign focused on confirming prior anomalous zones, mapping new mineralized trends and evaluating pegmatite-hosted rare earth element targets. Notably, two carbonatite areas were identified: (1) the first on the Blanchette property, representing a newly discovered location not previously sampled; and (2) the second on the Seigneurie property, confirming an REE-anomalous carbonatite subcrop documented by MRNF but not classified as a mineral occurrence. Important geological observations include:

• Discovery of carbonatite boulders at Blanchette proximal to an interpreted circular magnetic feature interpreted as a prospective area for carbonatite;
• Extension of a prospective trend at Seigneurie, where the field team investigated and expanded upon a 2015 MRNF-reported REE-anomalous carbonatite subcrop;
• Identification of several pegmatite zones with REE potential on Seigneurie, consistent with the company's focus on critical minerals such as Nb, Nd, Pr, Dy, Y and other related elements.

Sampling and analytical work

All grab and channel samples were submitted to ALS Laboratories in Lachine, Montreal. Analytical methods include:

• ME-MS71L for REE-bearing granitic pegmatite and carbonatite units;
• PGM-23 and ME-MS61 for mafic and ultramafic units prospective for Ni-Cu-PGE mineralization.

Assay results are pending and will be released once received, compiled and reviewed by the company's technical team.

"Our fall 2025 phase 1 program has significantly improved our understanding of the geological framework across our Quebec properties. The identification of new carbonatite and pegmatite targets supports our view that these properties hold meaningful critical mineral potential," said Murray Nye, chief executive officer of North American Niobium. "We look forward to receiving the assay results and refining our exploration model as we advance toward the next phase of work."

About North American Niobium and Critical Minerals Corp.

North American Niobium 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 recently acquired land package in Quebec's Grenville province. The Quebec properties add exposure to rare earth elements, niobium and nickel-copper occurrences, expanding the company's footprint into critical minerals that are strategically important for energy and defence applications.

We seek Safe Harbor.