Osisko Intersects 312 Metres Averaging 0.56% Cu at Gaspe

Osisko Metals Incorporated (OM) reported 35 mineralized intercepts from 15 new drill holes at its Gaspé Copper Project in Québec on 2026-08-20. The headline interval comes from DDH 30-1223, a vertical infill hole located near the southern margin of the 2026 MRE model, which returned 312.5 m averaging 0.56% Cu, 4.89 g/t Ag, and 0.57% CuEq from 28.0 m to 340.5 m. This interval includes 36.0 m averaging 1.88% Cu, 13.3 g/t Ag, and 1.90% CuEq, as well as 10.5 m averaging 2.66% Cu, 23.5 g/t Ag, and 2.68% CuEq.

Other notable results include 30-1218, which returned 117.9 m at 0.49% Cu, including 9.0 m at 2.73% Cu; 30-1213, which returned 57.0 m at 0.63% Cu, including 6.20 m at 3.18% Cu; and 30-1215, which returned 79.0 m at 0.43% Cu. Additionally, 30-1220 returned infill intervals including 43.5 m at 0.51% Cu, 0.101% Mo, and 0.86% CuEq. The holes are categorized as infill, in-pit expansion, and out-of-pit expansion around Needle East and Needle Mountain. True widths are estimated at 80-90% of core length, with a cut-off of 0.12% CuEq over contiguous 20 m intervals.

Osisko Metals Incorporated (OM) has completed infill and step-out drilling at its Gaspé deposit, a move that serves to support resource conversion and local expansion rather than transform the asset. The company previously reported a 1.83 billion-tonne measured and indicated resource grading 0.32% copper equivalent in April 2026.

The latest assay results are above resource grade, representing an expected confirmation of the deposit’s quality rather than a new discovery or significant step-out. For an advanced explorer with a C$1.54 billion market capitalization, the 15 drill holes constitute routine positive news.

Osisko’s shares have already seen substantial appreciation, rising from approximately C$0.40 in August 2025 to a high of C$1.94 in June 2026.

Osisko Metals Incorporated (OM) is a Canadian exploration and development company focused on copper and zinc. The company’s Gaspé Copper Project is a past-producing copper-molybdenum-silver asset in Québec, which it acquired from Glencore in July 2023. Current resources at Gaspé include 1.83 billion tonnes of Measured and Indicated material averaging 0.32% CuEq, and 239 million tonnes of Inferred resources averaging 0.46% CuEq; no mineral reserves have been defined.

Osisko also holds a joint venture with Appian Capital for the Pine Point zinc project, which contains 49.5 million tonnes of Indicated resources at 5.52% ZnEq and 8.3 million tonnes of Inferred resources at 5.64% ZnEq. Strategic shareholders include Glencore, Agnico Eagle, Hudbay, Franco-Nevada, and CDPQ. As of June 30, 2026, the company held C$102.7 million in cash, prior to the July Glencore debenture conversion. Shares outstanding following the conversion are approximately 890.7 million.