LAURION Reports Multiple Gold and Polymetallic Intercepts, Including 9.90 m Grading 0.563 g/t Au and 4.55 m Grading 0.76% Cu and 12.29 g/t Ag, Including 1.70 m Grading 1.56% Cu and 24.45 g/t Ag at Ishkōday

LAURION Reports Multiple Gold and Polymetallic Intercepts, Including 9.90 m Grading 0.563 g/t Au and 4.55 m Grading 0.76% Cu and 12.29 g/t Ag, Including 1.70 m Grading 1.56% Cu and 24.45 g/t Ag at Ishkōday

Highlights Include:

LBX26-110: 4.55 m grading 0.063 g/t Au, 12.29 g/t Ag, 0.76% Cu and 0.16% Zn (80.45 m to 85.00 m ), including: 1.70 m grading 0.138 g/t Au, 24.45 g/t Ag, 1.56% Cu and 0.31% Zn (80.45 m to 82.15 m ).

9.90 m grading 0.563 g/t Au (205.70 m to 215.60 m ), including: 2.30 m grading 1.693 g/t Au (211.70 m to 214.00 m ).

3.70 m grading 0.246 g/t Au, 8.04 g/t Ag, 0.60% Cu and 1.08% Zn (184.20 m to 187.90 m ), including: 1.00 m grading 0.427 g/t Au, 17.15 g/t Ag, 1.18% Cu and 3.63% Zn (186.90 m to 187.90 m ).

TORONTO, Ontario, September 23, 2026 – TheNewswire — LAURION Mineral Exploration Inc. (TSX-V: LME | OTC: LMEFF | FSE: 5YD) (“LAURION” or the “Company”) is pleased to report assay results from drill holes LBX26-109 and LBX26-110 from its 2026 Phase 1 diamond drilling program at its 100%-owned Ishkōday Gold and Polymetallic Project (“Ishkōday”), located approximately 220 km northeast of Thunder Bay and 28 km northeast of Beardmore, Northwestern Ontario.

Phase 1 Drill Program and Progress Through targeted infill, expansion and exploration drilling, LAURION’s 2026 Phase 1 drill program is designed to systematically advance the A-Zone, which may support the evaluation of a potential maiden Mineral Resource Estimate (“MRE”). LBX26-109 and LBX26-110 tested targets associated with the River Shear, historical gold intercepts and modelled mineralized horizons, providing additional geological information from comparatively underexplored areas of the mineralized system. LBX26-109 was designed to test an isolated chargeability anomaly in the footwall of the River Shear, while also testing along strike to the northeast of high-grade gold intercepts reported in historic drill holes 88-22 and K-56. The hole was intended to determine whether mineralization associated with these historical intercepts and the geophysical response continues into this comparatively underexplored area. LBX26-110 was proximal to LBX26-109, drilled as a step-back from historic drill hole K-45 to test the River Shear and a mineralized horizon modelled from historic drill logs, while also testing the area associated with high-grade historical intercepts in drill hole M1. In addition to intersecting the anticipated River Zone, the hole encountered a 9.90 m gold-bearing interval from 205.70 m to 215.60 m associated with silicification of a shear zone and possible disseminated pyrite, as well as a separate 6.00 m gold-bearing interval from 238.00 m to 244.00 m near the contact with the pluton. These deeper intervals were unexpected and provide new geological information for potential follow-up evaluation in the future.

Building on the program to date, LAURION increased its planned Phase 1 drilling from 3,865 metres to 5,605 metres across 22 drill holes. The expanded program is being informed by SRK Consulting’s independent structural gap analysis of the A-Zone, which identified five priority target areas where additional drilling may address key gaps in the existing drill database and further strengthen geological understanding. LAURION is using this framework, together with ongoing drill results, to prioritize near-term drilling as it continues to systematically advance the A-Zone toward its potential maiden MRE. Specific targets, sequencing and timing remain subject to, among other things, ongoing results and available financing.

LBX26-109 Assay Summary

Hole ID From (m) To (m) Core Length (m) Au (g/t) Ag (g/t) Cu (%) Zn (%)

LBX26-109 17.90 19.10 1.20 0.670 1.52 0.04 0.87 including 17.90 18.40 0.50 0.156 3.30 0.07...