Osisko Metals Incorporated has returned 28 mineralized intercepts from 12 drill holes as part of its ongoing drilling program at the Gaspé Copper Project in the Gaspé Peninsula of Eastern Québec.

The standout result came from out-of-pit expansion hole 30-1228, which intersected 256.5 metres averaging 0.85% copper and 5.13 g/t silver from 33.0 metres downhole. The interval includes a high-grade sub-interval of 28.5 metres averaging 4.74% copper and 27.4 g/t silver at the C Zone level. Hole 30-1228 was collared on the western margin of the Needle Mountain pit and drilled beneath the pit wall through pillars of the B and C Zone underground workings.

Other notable results include vertical infill hole 30-1235, which returned 257.5 metres averaging 0.39% copper and 3.60 g/t silver from the south end of the 2026 mineral resource estimate model, and infill hole 30-1233, which intersected 177.5 metres averaging 0.40% copper and 2.88 g/t silver. Additional expansion intercepts included hole 30-1224, cutting 153.2 metres averaging 0.20% copper and 1.58 g/t silver, and hole 30-1226, returning 101.0 metres averaging 0.44% copper and 2.35 g/t silver.

“We are very pleased with these excellent new results from the current drilling, particularly the high-grade intercept in hole 30-1228 located 800 metres west of the 2026 MRE model. The mineralized system continues to expand beyond the current pit limits with noticeable grade improvement in the area around Needle Mountain. Additionally, infill holes 30-1233 and 30-1235 produced better-than-average grades at the south end of the 2026 MRE model. New assay results are now being received at a faster pace, and we expect to provide continuous updates throughout the fall.”

— Robert Wares, Chief Executive Officer

The project hosts the largest undeveloped copper resource in eastern North America, situated near existing infrastructure in Québec. Osisko Metals previously completed drilling campaigns between 2022 and 2024 targeting open-pit resources within the Copper Mountain stockwork before stepping out south into the prograde skarn portion of the system. That work culminated in an updated mineral resource estimate in April 2026 encompassing 1.83 billion tonnes of indicated resources at 0.32% copper equivalent and 239 million tonnes of inferred resources at 0.46% copper equivalent.

The current drill campaign is designed to convert the bulk of the remaining inferred resources into the measured and indicated categories, while continuing to test lateral extensions to the west and towards Needle East and Needle Mountain.

Read the full announcement: Osisko Intersects 256 Metres Averaging 0.85% Cu at Gaspé