Bonterra Congratulates Osisko Mining on C$2.16 Billion Friendly Takeover by Gold Fields

Val-d’Or, QC – August 12, 2024 – Bonterra Resources Inc. (TSX-V: BTR, OTCQX: BONXF, FSE: 9BR2) (“Bonterra” or the “Company”) congratulates Osisko Mining Inc. (“Osisko Mining”) on their recent announcement that it has entered into a definitive arrangement agreement dated August 12, 2024 (the “Arrangement Agreement”) pursuant to which Gold Fields Limited, through a 100% owned Canadian subsidiary (“Gold Fields”), has agreed to acquire all of the issued and outstanding common shares of Osisko (the “Shares”) at a price of C$4.90 per Share (the “Consideration”), in an all-cash transaction valued at approximately C$2.16 billion on a fully diluted basis (the “Transaction”).

The Consideration represents an approximate 55% premium to the 20‐day volume weighted average trading price per Share on the Toronto Stock Exchange for the period ending August 9, 2024, being the last trading day prior to the announcement of the Transaction.

Marc André Pelletier, President and CEO commented: “We extend a well-deserved congratulations to our neighbors and joint venture partners, Osisko Mining, on this important milestone. The significant premium paid by Gold Fields underscores the value of the Windfall gold project and its highly prospective exploration camp. We are confident that this transaction will further drive growth and development in the region. We look forward to continuing the joint venture with our new partner Gold Fields and to the shared success that lies ahead.”

About Bonterra Resources Inc.

Bonterra is a Canadian gold exploration company with a portfolio of advanced exploration assets anchored by a central milling facility in Quebec, Canada. The Company’s assets include the Gladiator, Barry, Moroy, and Bachelor gold deposits, which collectively hold 1.24 million ounces in Measured and Indicated categories and 1.78 million ounces in the Inferred category.

In November 2023, the Company entered into an earn-in and joint venture agreement with Osisko Mining Inc. for the Urban-Barry properties, which include the Gladiator and Barry deposits. Over the next three years, Osisko can earn a 70% interest by incurring $30 million in work expenditures. This strategic transaction highlights Bonterra’s dedication to advancing its exploration assets, marking a significant step towards development.

FOR ADDITIONAL INFORMATION

Marc-André Pelletier, President & CEO
ir@btrgold.com

2872 Sullivan Road, Suite 2, Val d’Or, Quebec J9P 0B9
819-279-9304 | Website: www.btrgold.com

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