Osisko Mining Inc.

Canaccord Genuity is pleased to announce that on October 5, 2017, Osisko Mining Inc. (TSX: OSK) (“Osisko” or the “Corporation”) completed a three-tranche bought deal offering for gross proceeds of C$92,364,553 (the “Offering”). Tranche one consisted of 6,638,950 flow-through shares (“FT Shares”) at a price of C$6.93 per FT Share. Tranche two consisted of 1,848,850 FT Shares at a price of C$6.14 per FT Share. Tranche three consisted of 8,334,450 common shares at a price of C$4.20 per common share. The Offering was led by Canaccord Genuity Corp.

The gross proceeds from the sale of FT Shares will be used to fund "Canadian exploration expenses" (within the meaning of the Income Tax Act (Canada)) related to Osisko's projects in Québec on or prior to December 31, 2018 for renunciation to subscribers of FT Shares effective December 31, 2017. The net proceeds from the sale of common shares will be used to fund exploration activities and for general corporate purposes.

Osisko is a mineral exploration company focused on the acquisition, exploration and development of precious metal resource properties in Canada. Osisko holds a 100% interest in the high-grade Windfall Lake gold deposit located between Val d'Or and Chibougamau in Quebec.