Stock Symbol:                                                                       AEM (NYSE and TSX)

TORONTO, Dec. 16, 2025 – Agnico Eagle Mines Limited (NYSE: AEM) (TSX: AEM) (“Agnico Eagle”) today announced it has purchased 26 million common shares (the “Common Shares”) of Osisko Metals Incorporated (“Osisko”) through a non-brokered private placement, with each share priced at C$0.48, resulting in a total cost of C$12.48 million (the “Private Placement”).

Agnico Eagle bought the Common Shares as part of its strategy to secure strategic stakes in promising opportunities with strong geological potential. The company remains focused on its portfolio of high-quality internal growth projects and supplements its project pipeline by making strategic equity investments in ventures with high geological potential.

Before the Private Placement, Agnico Eagle held 41,210,000 Common Shares and 20,605,000 common share purchase warrants of Osisko (the “Warrants”), accounting for roughly 6.71% of Osisko’s issued and outstanding Common Shares on a non-diluted basis and about 9.73% on a partially-diluted basis (if the Warrants are exercised). After the Private Placement, Agnico Eagle owns 67,210,000 Common Shares and 20,605,000 Warrants, representing approximately 9.85% of the issued and outstanding Common Shares on a non-diluted basis and around 12.49% on a partially-diluted basis (assuming Warrant exercise). These figures reflect all other security issuances Osisko completed alongside the Private Placement.

In conjunction with its initial investment in Osisko, Agnico Eagle and Osisko signed an investor rights agreement. Upon closing the Private Placement, the two companies entered into an amended and restated investor rights agreement. Under this agreement, Agnico Eagle has certain rights (subject to maintaining or reaching specific ownership thresholds, as applicable), including: (a) the right to take part in equity financings and increase its holdings in response to dilutive issuances to preserve certain ownership levels in Osisko; and (b) the right (which Agnico Eagle cannot exercise at present) to name one or two individuals to Osisko’s board of directors once it meets certain ownership thresholds, depending on the board’s size.

Based on market conditions, strategic goals, and other factors, Agnico Eagle may occasionally buy more Common Shares or other Osisko securities, or sell some or all of the Osisko Common Shares or other securities it holds at that time.

Agnico Eagle will file an early warning report in compliance with relevant securities laws. To get a copy of the report, please contact:

Agnico Eagle Mines Limited
c/o Investor Relations
145 King Street East, Suite 400
Toronto, Ontario M5C 2Y7
Telephone: 416-947-1212
Email:

Agnico Eagle’s headquarters is at 145 King Street East, Suite 400, Toronto, Ontario M5C 2Y7. Osisko’s headquarters is at 155 University Avenue, Suite 1440, Toronto, Ontario M5H 3B7.

About Agnico Eagle

Based in Canada and led by Canadian management, Agnico Eagle is Canada’s biggest mining company and the world’s second-largest gold producer. It extracts precious metals from operations in Canada, Australia, Finland, and Mexico, and has a pipeline of high-quality exploration and development projects. The company is a preferred partner in the mining industry, globally recognized for its top-tier sustainability practices. Founded in 1957, Agnico Eagle has consistently delivered value to its shareholders, paying a cash dividend every year since 1983.

Forward-Looking Statements

This news release was prepared as of December 16, 2025. Certain statements in this release, referred to here as “forward-looking statements”, qualify as “forward-looking statements” under the U.S. Private Securities Litigation Reform Act of 1995 and “forward-looking information” under Canadian provincial securities laws. These statements are recognizable by words like “may”, “will”, or similar terms.

Forward-looking statements in this release include, but are not limited to, statements about Agnico Eagle’s future purchase or sale of Osisko securities.

Forward-looking statements are based on several factors and assumptions that Agnico Eagle deems reasonable as of the statement date, but they are inherently subject to significant business, economic, and competitive risks and uncertainties. Numerous known and unknown factors could lead to actual results that differ materially from those stated or implied by these forward-looking statements. Readers are warned not to rely too heavily on these statements, which are only valid as of their original date. Except as required by law, Agnico Eagle has no intention and assumes no obligation to update these forward-looking statements.

SOURCE Agnico Eagle Mines Limited