Mr. Robert Wares reports

OSISKO METALS ANNOUNCES UPLISTING TO TORONTO STOCK EXCHANGE

Osisko Metals Inc. will uplist to the Toronto Stock Exchange, effective at market open on Friday, Aug. 22, 2025. The common shares of the company will continue to trade under its current stock symbol, OM, following the uplisting from the TSX Venture Exchange to the TSX.

Following the uplisting to the TSX, the common shares will no longer trade on the TSX-V and will be voluntarily delisted from the TSX-V, effective as of close of market on Thursday, Aug. 21, 2025. Shareholders are not required to exchange their direct registration system advices or share certificates, or take any other action in connection with the TSX uplisting.

The company will remain a reporting issuer under applicable Canadian securities laws through the listing transition process from the TSX-V to the TSX. The common shares will continue to be listed on the OTCQX Best Market under the symbol OMZNF and on the Frankfurt Stock Exchange under the symbol OB51.

Graduating to the TSX represents a significant milestone that is expected to enhance the company's visibility and improve access to a broader investor base.

John Burzynski, executive chair of Osisko Metals, commented: "Graduating to the TSX is a natural evolution to our continued growth following our significant capital raise and management transition to Osisko Metals in December, 2024, and the continued overwhelmingly positive results of our new drilling program. The Gaspe copper project has large-scale potential, and I believe we have only scratched the surface. Aligning with our business plan, this listing is set to enhance our visibility in the capital markets, enabling us to continue to attract significant institutional and retail investors to our story as the Gaspe copper project advances."

About Osisko Metals Inc.

Osisko Metals is a Canadian exploration and development company creating value in the critical metal 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 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." Gaspe copper 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 Mt at 5.52 per cent zinc equivalent and inferred mineral resources of 8.3 Mt 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, Northwest Territories, close to infrastructure, with paved road access, an electrical substation and 100 kilometres of viable haul roads.

We seek Safe Harbor.