Ms. Cynthia Le Sueur-Aquin reports

LAURION REPORTS HIGH-GRADE GOLD-COPPER GRAB SAMPLES UP TO 26.0 G/T AU AND 1.61% CU FROM HISTORIC MIRON ZONE, ISHKODAY PROJECT

Laurion Mineral Exploration Inc. has released results from a program of grab sampling completed at the historic Miron zone, located on the company's 100-per-cent-owned Ishkoday gold and polymetallic project in the Beardmore-Geraldton greenstone belt in Northwestern Ontario.

Highlights:

• A total of 15 grab surface rock geochemical samples were collected from the Miron zone quartz vein exposure following excavation, dewatering and cleanup of a historic test pit that had been overgrown and water filled.
• Assay results include a high-grade sample of 26.0 grams per tonne gold and 1.505 per cent copper (sample S358072) and a second sample returning 8.82 g/t Au and 1.61 per cent Cu (sample S358073).
• A third sample returned 0.881 g/t Au with 1.485 per cent Cu (sample S358076), reinforcing a consistent gold-copper association at this showing.
• Results confirm the polymetallic character of the Miron zone, consistent with the company's broader interpretation of the Ishkoday corridor as an orogenic gold system overprinting an earlier base metal mineralizing event.
• The Miron zone was previously tested by three historic diamond drill holes in 1987 to 1988 (Farboro Resources Inc. and Oz Exploration Inc., 1988; see "Miron zone background" below for full source citation). None of the three holes returned gold grades comparable with historic surface sampling of the vein; results indicate the vein widens to the southwest, a trend that has not been tested at depth. The company's 2026 exploration program is designed to test the southwest widening trend.

Miron zone background

The Miron zone (Miron vein) is located north of Coyle Lake within a single 6.0-kilometre-by-2.5-kilometre mineralized corridor of the Ishkoday project. The zone is characterized by a quartz vein approximately 2.1 metres wide, striking approximately 022 degrees with a near-vertical dip, historically exposed by a 10.6-metre test pit. The Miron zone grab sample locations are centred at approximately 447195.9 E and 5513888.8 N (NAD83 UTM zone 16N).

The vein was previously tested by three diamond drill holes, drilled at the same azimuth and dip from collars spaced 25 metres apart along strike, totalling 183.18 metres. None of the three holes returned gold grades comparable with the historic surface sample grade from the same vein: The hole drilled beneath the historic test pit returned a best value of 200 parts per billion Au; the hole drilled 25 metres to the northeast returned no significant values; and the hole drilled 25 metres to the southwest intersected a wider zone of quartz veining (5.61 metres) but only anomalous gold values up to 280 ppb Au (Farboro Resources and Oz Exploration, "Report on Winter 1987-88 Exploration Program, Project 474 -- Sturgeon River, Elmhirst Township, Ontario, NTS 42E/13," written by Robert J. Tremblay, senior geologist, D.I.G. Mining Enterprises Inc. (project manager), dated June, 1988). While drill-tested gold grades to date have remained low, the southwesternmost hole indicates the vein widens in that direction -- a trend that the company believes warrants further testing at depth.

The historic pit had become overgrown with trees and shrubs and was water filled at the time Laurion's field crew, led by prospector Rick Cote, undertook excavation, dewatering and site cleanup. This work re-exposed the vein and enabled the collection of the grab samples reported herein.

The company's 2026 exploration program will potentially include two diamond drill holes designed to test the downplunge extension and southwest widening of the vein indicated by the 1987-1988 drill fence, with oriented core planned to confirm plunge direction ahead of the full program.

Sample method and quality assurance/quality control

Samples were collected as grab samples by company personnel and delivered under chain of custody to ALS Canada Ltd., an accredited, ISO/IEC 17025-certified laboratory. Sample preparation was completed at ALS's facility in Thunder Bay, Ont. (fine crushing to 70 per cent passing two millimetres, riffle splitting and pulverizing 250 grams to 85 per cent passing 75 microns), with analysis completed at ALS's facility in North Vancouver, B.C. Gold was analyzed by 50-gram fire assay with an atomic absorption or gravimetric finish (Au-GRA22 gravimetric finish applied to samples returning greater than 10 g/t on the initial screen); a 34-element ICP-AES/ICP-MS multielement package was also completed, with copper values exceeding the upper limit of that method reassayed using an ore-grade four-acid ICP-AES method.

Grab samples are a selective, judgmental sampling method used to characterize mineralization at a showing or outcrop and are not necessarily representative of the mineralization hosted on the property as a whole. The company did not insert additional blind field standards into this sample batch. ALS's own internal laboratory QA/QC program, including certified reference materials, blanks and duplicate analyses, was applied to this sample batch as part of the laboratory's routine internal quality control process.

Qualified person

The technical contents of this press release have been reviewed and approved by Dr. Trevor Boyd, PhD, PGeo, a consultant to Laurion and a qualified person as defined by National Instrument 43-101, Standards of Disclosure for Mineral Projects. Dr. Boyd is independent of the company within the meaning of NI 43-101.

About Laurion Mineral Exploration Inc.

Laurion Mineral Exploration is listed on the TSX Venture Exchange (symbol: LME), the OTCQB (symbol: LMEFF) and the Frankfurt Stock Exchange (symbol: 5YD) and is a mid-stage Canadian mineral exploration company, focused on advancing the 100-per-cent-owned Ishkoday gold and polymetallic project in Northern Ontario.

The Ishkoday project covers approximately 57 square kilometres within the prolific Beardmore-Geraldton and Onaman-Tashota greenstone belts and hosts a single 6.0-kilometre-by-2.5-kilometre mineralized corridor. Historical and modern exploration programs have completed over 98,000 metres of drilling, confirming a large and evolving gold-rich polymetallic mineral system.

Laurion's strategy emphasizes disciplined, data-driven exploration, systematic technical advancement, integrated geological modelling and responsible capital allocation. The company is focused on strengthening geological confidence, expanding the scale of the mineral system and positioning the project for a future NI 43-101 mineral resource estimate (MRE). Laurion continues to evaluate opportunities that may enhance project development flexibility, including potential non-dilutive initiatives such as the evaluation of historical surface stockpile processing. The company's objective is to build technical clarity, scale and long-term project value before monetization, ensuring that future development decisions or strategic opportunities are supported by strong geological foundations and reduced execution risk.

Cynthia Le Sueur-Aquin, president and chief executive officer of Laurion, is the company's largest shareholder, holding 17,221,306 common shares, reflecting strong alignment between management and shareholders.

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