Mr. Robert Wares reports

OSISKO METALS ANNOUNCES VOTING RESULTS OF ANNUAL AND SPECIAL MEETING OF SHAREHOLDERS

Osisko Metals Inc. has released the results of its annual and special meeting of shareholders of the company, held earlier today. A total of 290,548,699 common shares of the company were represented, in person or by proxy, at the meeting, representing approximately 47.67 per cent 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 per cent 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 per cent in favour of each director);
• Appointing PricewaterhouseCoopers LLP as the auditor of the company and authorizing directors to fix its remuneration (over 99 per cent in favour);
• Authorizing and approving the continuance of the company from British Columbia to Ontario and adopting a new bylaw upon such continuance (over 95 per cent 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 per cent in favour);
• Approving certain prior grants of restricted share units and deferred share units (over 99 per cent of disinterested shareholders in favour);
• Approving the company's omnibus equity incentive plan (over 99 per cent in favour).

The omnibus plan was adopted by the board of directors of the company on Jan. 17, 2025. The omnibus plan is a fixed 10-per-cent 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+ under the company's issuer profile and on the company's website.

About Osisko Metals Inc.

Osisko Metals 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-per-cent interest in the past-producing Gaspe copper mine from Glencore Canada Corp. in July, 2023. The Gaspe copper mine is located near Murdochville in Quebec's Gaspe peninsula. The company is currently focused on resource expansion of the Gaspe copper system, with current indicated mineral resources of 824 million tonnes grading 0.34 per cent copper equivalent (CuEq) and inferred mineral resources of 670 million tonnes grading 0.38 per cent CuEq (in compliance with National Instrument 43-101). For more information, see Osisko Metals' Nov. 14, 2024, news release, entitled "Osisko Metals Announces Significant Increase in Mineral Resource at Gaspe Copper." The Gaspe copper project hosts the largest undeveloped copper resource in Eastern North America, strategically located near existing infrastructure in the mining-friendly province of Quebec.

In addition to the Gaspe copper project, the company is working with Appian Capital Advisory LLP through the Pine Point Mining Ltd. 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 million tonnes at 5.52 per cent zinc equivalent (ZnEq) and inferred mineral resources of 8.3 million tonnes at 5.64 per cent 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 per cent ZnEq." The Pine Point project is located on the south shore of Great Slave Lake in the Northwest Territories, close to infrastructure, with paved road access, an electrical substation and 100 kilometres of viable haul roads.

We seek Safe Harbor.