Laurion Mineral drills 0.8 m of 9.16 g/t Au at Ishkoday

Ms. Cynthia Le Sueur-Aquin reports LAURION INTERSECTS 9.16 G/T GOLD OVER 0.80 METRES AND RELEASES RESULTS FOR THE FIRST THREE DRILL HOLES AT STURGEON RIVER MINE AREA Laurion Mineral Exploration Inc. has received encouraging initial results from the first three diamond drill holes of its previously announced 2025 drill program at the Ishkoday project, located 220 kilometres (km) northeast of Thunder Bay, Ont. Further to the corporation's news releases dated May 8, 2025, and May 27, 2025, drilling began in mid-May and is part of a 7,000-metre campaign targeting the high-grade gold-bearing vein systems of both the Brenbar and Sturgeon River mine areas. Highlights from the first three drill holes at the Sturgeon River mine area include: LME25-060: 9.16 grams per tonne (g/t) gold (Au) over 0.80 metre (m) from 272.70 m to 273.50 m; LME25-060: 3.16 g/t Au over 1.00 m from 583.80 m to 584.30 m; LME25-060: 3.13 g/t Au over 1.00 m from 379.00 m to 380.00 m; LME25-056: 3.07 g/t Au over 0.50 m from 609.50 m to 610.00 m; LME25-056: 3.03 g/t Au over 0.60 m from 595.20 m to 595.80 m; LME25-057: 1.31 g/t Au over 0.50 m from 536.50 m to 537.00 m. These intercepts confirm the continuity of multiple gold-bearing vein sets within the Sturgeon River mine corridor, with significant grades encountered from near-surface zones to depths exceeding 600 metres. The results support the potential for both discrete high-grade shoots and broader mineralized envelopes along strike and at depth. Drill program context The 2025 program is designed to: Test depth extensions beneath historical workings; Infill drill to improve geological continuity; Extend strike to the north and south; Evaluate new zones to the northwest, including the M24 and M25 vein systems. The first three drill holes, totalling 2,151 metres, successfully intersected both known and previously untested structures. LME25-060 (northwest of the shaft) targeted the No. 21 vein and the principal No. 1, No. 2 and No. 3 veins historically mined at Sturgeon. All mineralized intercepts for hole LME25-060 are set forth in an attached table. LME2025-057 (southwest of the shaft) tested the No. 1, No. 2 and No. 3 veins, and the Bootlegger vein, a previously untested southern structure. An attached table describes all the different mineralized intercepts from this hole. LME25-056 (east of the shaft) intersected the northeast-striking veins No. 8 and No. 11, and the Coniagas vein, and crossed the No. 1, No. 2, and No. 3 veins. An attached table contains the different mineralized highlights from this drill hole. The drill holes were started from the locations and orientation given in another attached table. Management commentary "The first three holes have validated our geological model and confirmed that key gold-bearing structures extend along strike and at depth," said Cynthia Le Sueur-Aquin, president and chief executive officer of Laurion. "These results build momentum for the balance of the program as we continue to test high-priority targets within the Sturgeon River mine corridor." Exploration strategy The drill program is supported by deep-penetrating DCIP and magnetotelluric (MT) geophysical surveys combined with strong a geological model, which have highlighted resistivity and chargeability features interpreted to be associated with quartz veining, sulphide mineralization and major structural corridors. Laurion remains committed to its systematic, data-driven approach to advancing the Ishkoday project, with disciplined execution and positioning the asset for future growth. Corporate update Since engaging U.S. Capital Global Partners (USCGP), Laurion's path has evolved, and Laurion has significantly expanded its strategic review and financial network to align with its advancing growth trajectory and transaction readiness. This evolution reflects the company's confidence in the strength of the Ishkoday asset, and the depth and agility of its leadership team. Active engagement with several qualified third parties further supports the company's commitment to exploring strategic opportunities in the best interests of the corporation and its stakeholders. Sampling and QA/QC (quality assurance/quality control) protocols All drill core is transported and stored inside the core facility located at the Ishkoday project in Greenstone, Ont. Laurion employs an industry standard system of external standards, blanks and duplicates for all of its sampling, in addition to the QA/QC protocol employed by the laboratory. After logging, core samples were identified and then cut in half along core axis in the same building, and then zip tied individually in plastic sample bags with a bar code. Approximately five or six of these individual bags were then stacked into a "rice" white material bag and stored on a skid for final shipment to the laboratory. All core samples were shipped to the ALS facility in Thunder Bay, Ont., which were then prepared by ALS Global Geochemistry in Thunder Bay and analyzed by ALS Global Analytical Lab in North Vancouver, B.C. Samples are processed by four-acid digestion and analyzed by fire assay on 50-gram (g) pulps and ICP-AES (inductively coupled plasma atomic element spectroscopy). Overlimit analyses are reprocessed with gravimetric finish. A total of 5 per cent blanks and 5 per cent standard are inserted randomly within all samples. Five per cent of the best assay result pulps were sent for reassays. All QA/QC were verified, and no contamination or bias have been observed. The remaining half of the core, as well as the unsampled core, is stored in temporary core racks at the core logging facility in Beardmore and moved to the core storage facility at the Ishkoday project. Qualified person The technical contents of this news release were reviewed and approved by Jean-Philippe Paiement, PGeo, MSc, a consultant to Laurion and a qualified person as defined by National Instrument 43-101, Standards of Disclosure for Mineral Projects. About Laurion Mineral Exploration Inc. The corporation is a mid-stage junior mineral exploration and development company listed on the TSX Venture Exchange under the symbol LME and on the OTC Pink Market under the symbol LMEFF. Laurion now has 274,012,283 outstanding shares, of which approximately 73.6 per cent are owned and controlled by insiders who are eligible investors under the "friends and family" categories. Laurion's emphasis is on the exploration and development of its flagship project, the 100-per-cent-owned mid-stage 57-square-kilometre Ishkoday project, and its gold-rich polymetallic mineralization. Laurion's chief priority remains maximizing shareholder value. A large portion of the corporation's focus in this regard falls within the scope of its mineral exploration activities and, more specifically, advancing the Ishkoday project. A consequence of Laurion's success and advancement over the past several years is that the corporation has become positioned as an acquisition target for appropriate potential acquirors. Accordingly, the corporation's board of directors is aware that possible strategic alternatives and transactional opportunities may arise and/or could be procured in the short or medium terms. The corporation will promptly issue a news release if any material change occurs. We seek Safe Harbor.