Kirkland Lake Discoveries Intersects 2.46 g/t Au Over 14.7 m in New Fault Zone; 180 m Step-Out Expands Mirado South

Toronto, Ontario--(Newsfile Corp. - May 25, 2026) - Kirkland Lake Discoveries Corp. (TSXV: KLDC) (OTCQB: KLKLF) ("KLDC" or the "Company") is pleased to announce assay results from its ongoing 2026 diamond drilling program at the past-producing Mirado property, located 20 km southeast of Kirkland Lake, Ontario. Highlights: KLM26-005 0.25 g/t Au over 11.8 m from 16.8 m to 28.5 m And 14.72 g/t Au over 0.8 m from 72.2 m to 73.0 m And 0.40 g/t Au over 8.8 m from 123.4 m to 132.2 m And 1.35 g/t Au over 4.2 m from 158.5 m to 162.7 m KLM26-006 0.82 g/t Au over 24.0 m from 160.0 m to 184.0 m And 0.76 g/t Au over 13.0 m from 286.3 m to 299.3 m And 2.46 g/t Au over 14.7 m from 345.1 m to 359.8 m, including: 12.52 g/t Au over 1.8 m from 345.1 m to 346.9 m Multiple high-grade intercepts KLM26-010 Visible gold observed at 257 m downhole; this drill hole is a step-out of 180 m from historical resource limits Drilling resumes at KL South with program expanded to 30,000 m due to under-budget winter program efficiencies Assay results from drill holes KLM26-005 and KLM26-006 , and visuals from KLM26-010 continue to strengthen KLDC's evolving geological model at Mirado, highlight the growing scale of both the South and North Zone systems and provide a regional outlook for the remainder of KL South (see Figure 1 ). Results from drill hole KLM26-005 , located approximately 40 m southeast of KLM26-004, confirm the lateral continuity of the South Zone mineralized system and demonstrate the presence of high-grade shoots within the broader mineralized envelope with geological continuity.

Drill hole KLM26-006 is the first hole testing the upper portion of the North Zone while undercutting the South Zone and successfully extending the stacked North Zone mineralized structures by approximately 125 m vertically (see Figure 2 ). The hole intersected multiple broad intervals of gold mineralization associated with quartz-carbonate veining and sulphide mineralization hosted within altered volcanic u