OSISKO METALS LAUNCHES DEEP PORPHYRY EXPLORATION PROJECT (“DPEX”) AND CONFIRMS 852 METRES AVERAGING 0.95% CuEq AT HISTORIC PORPHYRY MOUNTAIN DEPOSIT

Osisko Metals has initiated its Deep Porphyry Exploration Project (DPEX), marking a significant milestone in the re-evaluation of the historic Porphyry Mountain deposit within the company's Gaspé Copper Project in Quebec. The deposit, originally discovered by Noranda Inc. in 1994 during mine-site exploration work, has now been confirmed to contain 852 metres of mineralization averaging 0.95% copper equivalent.

The launch of DPEX represents Osisko's strategic focus on unlocking the potential of previously identified copper mineralization in the Gaspé region. The confirmation of substantial copper grades over significant widths validates the company's decision to revisit this historic discovery and suggests considerable potential for resource expansion through modern exploration techniques.

For the copper sector, this development is particularly noteworthy given the growing demand for copper in renewable energy infrastructure and electric vehicle manufacturing. The Gaspé Copper Project's location in Quebec provides access to established mining infrastructure and supportive regulatory frameworks, potentially positioning Osisko to capitalize on strengthening copper markets.

The re-evaluation of the Porphyry Mountain deposit through DPEX could lead to updated resource estimates and development timelines, particularly as Osisko applies contemporary geological understanding and exploration methods to this historic discovery. This initiative aligns with broader industry trends of revisiting past discoveries with modern technology to unlock previously unrecognized value.