Kirkland Lake Discoveries expands Mirado with 80 m step out, 4.4 m of 20.29 g/t Au

North Zone extended beneath historical resource by 140 m; initial regional drilling intersects broad hydrothermal alteration approximately 1.5 km southwest of Mirado

Toronto, Ontario--(Newsfile Corp. - August 19, 2026) - Kirkland Lake Discoveries Corp. (TSXV: KLDC) (OTCQB: KLKLF) ("KLDC" or the "Company") reports assay results from seven additional drill holes at the Mirado Gold Project, including broad near-surface mineralization, high-grade gold below the historical resource and an extension of the North Zone. The Company has also completed six regional holes at the MZ Zone, and four regional holes southwest of Mirado where drilling intersected intense hydrothermal alteration and sulphide mineralization. Assays from the MZ Zone and regional holes are pending.

Highlights

High-Grade South Zone Intercept : Hole KLM26-022 intersected a high-grade interval returning 20.29 g/t Au over 4.4 m from 177.6 m to 182.0 m

Continuous Bulk-Tonnage Potential: Hole KLM26-021 in the South Zone demonstrated broad continuity, returning 0.34 g/t Au over 41.2 m from 123.8 m to 165.0 m. Deeper in the same hole, drilling intersected 1.33 g/t Au over 18.0 m from 265.0 m to 283.0 m

North Zone Extension: Step-out drilling in the North Zone continues to yield solid results, with hole KLM26-023 returning 2.27 g/t Au over 9.1 m from 37.9 m to 47.0 m, including 3.98 g/t Au over 5.0 m. It also returned 0.34 g/t Au over 21.0 m from 191.0 m to 212.0 m

Six holes completed at MZ Zone: intersected intense silica—chlorite—epidote alteration with disseminated and fracture-filled pyrite; assays are pending

Four additional regional holes completed southwest of Mirado intersected intense silica-potassic-hematite-epidote alteration and broad disseminated and fracture-filled chalcopyrite and pyrite; a total of twenty-two holes have assays pending

"We continue to see broad, continuous bulk-t