Osisko Mining Inc. announces that it has filed an early warning report in respect of its holdings in O3 Mining Inc. After giving effect to four trades ending on July 13, 2021, which settled through the facilities of the TSX Venture Exchange, the Corporation acquired an aggregate of 83,400 common shares of O3 Mining, representing approximately 0.12% of the issued and outstanding O3 Shares, for aggregate gross proceeds
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