Osisko Metals Incorporated (TSX-V: OM) (OTCQX: OMZNF) (FRA: 0B51) is pleased to announce that the Pine Point Mining Limited Feasibility Study is now fully underway, with an expected completion date in Q2 2025.

Since early 2023, PPML has engaged with its key technical and strategic advisors to optimize the 2022 Preliminary Economic Assessment Update. The objective was to complete Definition Studies to compare key concepts, otherwise known as trade-off studies, typically performed during the Pre-Feasibility study stage.

Since November of 2023, PPML and the team have conducted and thoroughly analyzed various technical trade-off studies to better define the FS final design concept. In Q3 2024, PPML’s Board of Directors approved the company’s final design concept to be developed in the FS. The FS will use the Mineral Resource Estimate announced on June 25th, 2024, that reported 49.5MT of Indicated Mineral Resources Grading 5.52% ZnEq and 8.3Mt of Inferred Mineral Resources Grading 5.64% ZnEq (see note below under “About Osisko Metals”).

These more detailed design concepts will bridge the Project from a PEA level into the FS stage and support concurrent Environmental Assessment and Permitting activities. A significant change is that the preconcentration methods proposed in the 2020 & 2022 PEA studies (i.e. XRF Ore Sorting, Dense Media Separation) will not be incorporated in the concentrator design in favour of conventional “Full Milling”. This will have an overall better recovery of zinc and lead and will reduce operational risk with the simpler flow sheet. Other concepts that were analyzed in detail were the use of former Cominco Era open pits to dispose of waste rock and tailings as much as possible. All key concepts will be presented to communities for feedback in upcoming community meetings planned for November 2024.

The PPML team relies on the experience of Qualified Persons working for established engineering firms, including Synectiq, BBA, GMining, Newfields, Terrane Geoscience, and WSP, to develop the Feasibility Study and advance permitting. WSP has local offices in the Northwest Territories and the experience needed for permitting in the North.

This summer, PPML had two weeks of site visits where the Project was presented to Government representatives, community leaders and members and environmental regulators and we thank them for their participation.

Qualified Person

Mr. Robin Adair is the Qualified Person and the Senior Technical Advisor for Pine Point Mining Limited. He is responsible for the technical data reported in this news release and is a Professional Geologist registered in the Northwest Territories.

About Osisko Metals

Osisko Metals Incorporated is a Canadian exploration and development company creating value in the critical metals space, more specifically copper and zinc. The Company is in a joint venture with Appian Capital Advisory LLP for the advancement of one of Canada’s premier past-producing zinc mining camps, the Pine Point Project, located in the Northwest Territories, for which current mineral resources have been calculated for the 2024 MRE (as defined herein). The Project is held under the joint venture company Pine Point Mining Limited. The current mineral resource estimate consists of 49.5Mt grading 5.52% ZnEq of Indicated Mineral Resources and 8.3Mt grading 5.64% ZnEq of Inferred Mineral Resources (in accordance with National Instrument 43-101 – Standards of Disclosure for Mineral Projects). The report’s title is Pine Point Zinc-Lead Project Mineral Resource Estimate Update, Hay River, Northwest Territories, Canada. Prepared for Osisko Metals Incorporated and Pine Point Mining Limited, it is effective May 31, 2024. The report’s authors are Pierre-Luc Richard, P. Geo. (PLR Resources Inc.), Colin Hardie, P. Eng. (BBA Inc.), as well as Carl Michaud, P. Eng., and Alexandre Dorval, P. Eng., both of G Mining Services Inc. The Pine Point Project is located on the south shore of Great Slave Lake in the Northwest Territories, near infrastructure, with paved highway access, an electrical substation, and 100 kilometres of viable haulage roads.

In addition, and outside of the Pine Point JV, the Company acquired in July 2023, from Glencore Canada Corporation, a 100% interest in the past-producing Gaspé Copper Mine, located near Murdochville in the Gaspé peninsula of Québec. The Company is currently focused on resource evaluation of the Copper Mountain Expansion Project that hosts a current mineral resource consisting of an Indicated Mineral Resource of 495Mt grading 0.37% CuEq and an Inferred Mineral Resource of 6.3Mt grading 0.37% CuEq (in accordance with National Instrument 43-101 – Standards of Disclosure for Mineral Projects); see May 6, 2024 news release of Osisko Metals entitled “Osisko Metals announces updated mineral resource estimate at Gaspé Copper – indicated resource of 495 mt grading 0.37% copper equivalent”. Gaspé Copper hosts the largest undeveloped copper resource in Eastern North America, strategically located near existing infrastructure in the mining-friendly province of Québec.

About Appian

Appian Capital Advisory LLP is a London-headquartered investment advisor to long-term value-focused private capital funds that invest solely in mining and mining-related companies.

Appian is a leading investment advisor in the metals and mining industry, with global experience across South America, North America, Europe, Australia and Africa and a successful track record of supporting companies to achieve their development targets, with a global operating portfolio overseeing nearly 6,300 employees. Appian has a global team of 65 experienced professionals with presences in London, Toronto, Vancouver, Montreal, New York, Lima, Belo Horizonte, Perth, Mexico City and Dubai. The Appian team, through its private capital funds, has a long history of successfully bringing mines through development and into production, having completed 9 mine builds in the last 6 years.