(Toronto, February 15, 2018).  Osisko Mining Inc. (OSK:TSX) ("Osisko" or the "Corporation") is pleased to announce the final results from the 2017 drill program at its 100% owned Garrison gold project located in Garrison Township, Ontario.  Over 85,000 metres of new drilling have been conducted by Osisko on the Garrison Project since its acquisition in late 2015.  A total of fifteen new intercepts in seven holes are reported in this release, with significant assay results presented in the table below.

Significant new results include:  2.51 g/t Au over 73.0 metres in OSK-G17-453; 1.98 g/t Au over 14.5 metres and 1.76 g/t Au over 25.5 metres in OSK-G17-461; 2.18 g/t Au over 9.0 metres in OSK-G17-445; and 1.27 g/t Au over 22.3 metres in OSK-G17-467.

The new results continue to show the increasing potential of the 903 Zone with proven extension towards SW, NW and South and to confirm the extent of known mineralization in the Garrcon Zone. Maps and sections showing hole locations and complete drilling results are available at www.osiskomining.com.