Osisko Metals Announces Voting Results of Annual and Special Meeting of Shareholders

Osisko Metals Incorporated (the " Company " or " Osisko Metals ") (TSX-V: OM; OTCQX: OMZNF; FRANKFURT: OB51) announces the results of its annual and special meeting of shareholders of the Company (the " Meeting ") held earlier today.

A total of 290,548,699 common shares of the Company (" Common Shares ") were represented, in person or by proxy, at the Meeting, representing approximately 47.67% of the total issued and outstanding Common Shares as of the record date of the Meeting.

All matters presented for shareholder approval at the Meeting were overwhelmingly approved as follows:

• Setting the board size at nine (over 99% in favour);
• Electing Robert Wares, John Burzynski, Jeff Hussey, Amy Satov, Cathy Singer, Donald Siemens, Peter Wright, Patrick F.N. Anderson, and Tara Christie as directors of the Company (over 99% in favour of each director);
• Appointing PricewaterhouseCoopers LLP as auditor of the Company and authorizing directors to fix their remuneration (over 99% in favour);
• Authorizing and approving the continuance of the Company from British Columbia to Ontario and adopting a new by-law upon such continuance (over 95% in favour);
• Authorizing the board of directors to set the number of directors of the Company in accordance with Section 125(3) of the Business Corporations Act (Ontario), conditional upon the effectiveness of the continuance into Ontario (over 95% in favour);
• Approving certain prior grants of restricted share units and deferred share units (over 99% of disinterested shareholders in favour); and
• Approving the Company's omnibus equity incentive plan (the " Omnibus Plan ") (over 99% in favour).
  

The Omnibus Plan was adopted by the board of directors of the Company on January 17, 2025. The Omnibus Plan is a fixed 10% plan and provides for the grant of options, restricted share units, performance share units and deferred share units. The aggregate maximum number of Common Shares reserved for issuance pursuant to the Omnibus Plan is 60,956,063 Common Shares (less any Common Shares reserved for issuance under other share compensation arrangements of the Company). The Omnibus Plan has received conditional acceptance from the TSX Venture Exchange.

For more details regarding the matters presented at the Meeting, please refer to the management information circular dated April 9, 2025, which is accessible on SEDAR+ ( www.sedarplus.ca ) under the Company's issuer profile and on the Company's website at www.osiskometals.com .

About Osisko Metals

Osisko Metals Incorporated is a Canadian exploration and development company creating value in the critical metals sector, with a focus on copper and zinc. The Company acquired a 100% interest in the past-producing Gaspé Copper mine from Glencore Canada Corporation in July 2023. The Gaspé Copper mine is located near Murdochville in Québec ' s Gaspé Peninsula. The Company is currently focused on resource expansion of the Gaspé Copper system, with current Indicated Mineral Resources of 824 Mt grading 0.34% CuEq and Inferred Mineral Resources of 670 Mt grading 0.38% CuEq (in compliance with NI 43-101). For more information, see Osisko Metals' November 14, 2024 news release entitled " Osisko Metals Announces Significant Increase in Mineral Resource at Gaspé Copper ". Gaspé Copper hosts the largest undeveloped copper resource in eastern North America, strategically located near existing infrastructure in the mining-friendly province of Québec.

In addition to the Gaspé Copper project, the Company is working with Appian Capital Advisory LLP through the Pine Point Mining Limited joint venture to advance one of Canada ' s largest past-producing zinc mining camps, the Pine Point project, located in the Northwest Territories. The current mineral resource estimate for the Pine Point project consists of Indicated Mineral Resources of 49.5 Mt at 5.52% ZnEq and Inferred Mineral Resources of 8.3 Mt at 5.64% ZnEq (in compliance with NI 43-101). For more information, see Osisko Metals' June 25, 2024 news release entitled "Osisko Metals releases Pine Point mineral resource estimate: 49.5 million tonnes of indicated resources at 5.52% ZnEq" . The Pine Point project is located on the south shore of Great Slave Lake, Northwest Territories, close to infrastructure, with paved road access, an electrical substation and 100 kilometers of viable haul roads.

For further information on this news release, visit www.osiskometals.com or contact:

Robert Wares, Chief Executive Officer of Osisko Metals Incorporated
Email: info@osiskometals.com
Phone: (514) 861-4441

Cautionary Statement on Forward-Looking Information

This news release contains "forward-looking information" within the meaning of applicable Canadian securities legislation based on expectations, estimates and projections as at the date of this news release. Any statement that involves predictions, expectations, interpretations, beliefs, plans projections, objectives, assumptions, future events or performance (often, but not always, using phrases such as "expects", or "does not expect", "is expected", "interpreted", "management's view", "anticipates" or "does not anticipate", "plans", "budget", "scheduled", "forecasts", "estimates", "potential", "feasibility", "believes" or "intends" or variations of such words and phrases or stating that certain actions, events or results "may" or "could", "would", "might" or "will" be taken, occur or be achieved) are not statements of historical fact and may be forward-looking information and are intended to identify forward-looking information. This news release contains forward-looking information pertaining to, among other things: the anticipated resource expansion of the Gaspé Copper system; Gaspé Copper hosting the largest undeveloped copper resource in eastern North America; and the advancement of the Pine Point project.

Forward-looking information is not a guarantee of future performance and is based upon a number of estimates and assumptions of management, in light of management's experience and perception of trends, current conditions and expected developments, as well as other factors that management believes to be relevant and reasonable in the circumstances. Forward-looking information involves risks, uncertainties and other factors that could cause actual events, results, performance, prospects and opportunities to differ materially from those expressed or implied by such forward-looking information. Factors that could cause actual results to differ materially from such forward-looking information are set out in the Company's public disclosure record on SEDAR+ (www.sedarplus.ca) under Osisko Metals' issuer profile. Although the Company believes that the assumptions and factors used in preparing the forward-looking information in this news release are reasonable, undue reliance should not be placed on such information, which only applies as of the date of this news release, and no assurance can be given that such events will occur in the disclosed time frames or at all. The Company disclaims any intention or obligation to update or revise any forward- looking information, whether as a result of new information, future events or otherwise, other than as required by law.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accept responsibility for the adequacy or accuracy of this news release. No stock exchange, securities commission or other regulatory authority has approved or disapproved the information contained herein.