Osisko Mining Inc. provided new results from the ongoing drill program at its 100% owned Windfall Lake gold project located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Quebec. The 800,000 metre drill program combines definition, expansion and exploration drilling in and around the main Windfall gold deposit and the adjacent Lynx deposit (located immediately NE of Windfall). Significant new analytical results from 90 intercepts in 52 drill holes focused on infill and expansion drilling in the Lynx deposit are presented below. Osisko continues to extend the known Lynx zones of mineralization through the application of the Windfall geological model and as the density of drilling increases. The main Lynx Corridor has been extended up plunge 250 metres SW from the last drill intercept for a total current strike length of confirmed mineralization over 1,550 metres and remains open. Lynx HW is showing good continuity and grades towards the NE. Lynx 4 has been extended 75 metres NE for a total current strike length of 1,350 metres and new infill drillholes continue to demonstrate continuity and robust gold grades between sections 3650E and 4225E. Highlights from the new results include: 140 g/t Au over 5.0 metres in OSK-W-17-1343; 210 g/t Au over 2.4 metres in OSK-W-17-923; 28.3 g/t Au over 7.7 metres in OSK-W-17-1193; 83.0 g/t Au over 2.0 metres in OSK-W-17-1059; 43.1 g/t Au over 4.4 metres in OSK-W-1343-W2; 48.7 g/t Au over 2.6 metres in OSK-W-17-1104; 43.8 g/t Au over 2.5 metres in OSK-W-17-1242; 22.6 g/t Au over 4.8 metres in OSK-W-17-888; 16.0 g/t Au over 5.5 metres and 22.9 g/t Au over 2.4 metres in OSK-W-17-1177; 29.8 g/t Au over 2.2 metres in OSK-W-17-1085; 14.8 g/t Au over 4.4 metres in OSK-W-1193-W1; 27.9 g/t Au over 2.4 metres in OSK-W-17-1181-W1; and 20.6 g/t Au over 2.2 metres in OSK-17-W-945. OSK-W-17-883 intersected 10.3 g/t Au over 2.0 metres in Lynx 1. Mineralization is composed of 2% disseminated pyrite in a silicified rhyolite with trace local visible gold and 1% pyrite in a one-metre crustiform vein. OSK-W-17-888 intersected 22.6 g/t Au over 4.8 metres, 17.8 g/t Au over 2.0 metres and 4.06 g/t Au over 2.1 metres in Lynx 2. The first and second intervals are composed of up 2% disseminated pyrite with pervasive silica flooding in a fragmental felsic intrusive. The third interval corresponds to a rhyolite containing 1% disseminated pyrite and 5% pyrite in association with pervasive silica flooding. OSK-W-17-902 intersected 3.67 g/t Au over 2.0 metres and 11.7 g/t Au over 2.1 metres in the Lynx Corridor. The first interval is composed of 2% pyrite stringers and 1% pyrite in tourmaline ptygmatic veins hosted in a gabbro. The second is composed of trace to 2% stringers and disseminated pyrite in a crustiform vein hosted in the same gabbroic unit. OSK-W-17-909-W2 intersected 19.2 g/t Au over 2.1 metres in Lynx 1. Mineralization is composed of 5 to 10% pyrite stringers in a fuchsitized, sericitized and silicified gabbro. OSK-W-17-909-W3 intersected Lynx 1 with 5.93 g/t Au over 2.0 metres and 5.86 g/t Au over 2.1 metres. The first interval is composed of 5% pyrite stringers in a crustiform vein with fuchsite and trace local visible gold hosted is a chloritized and sericitized andesite. The second interval is composed of 15% pyrite clusters and stringers in a silicified and sericitized andesite. OSK-W-17-923 intersected Lynx 4 returning 210 g/t Au over 2.4 metres with local visible gold in a slightly sericitized and silicified gabbro with fuchsite. OSK-W-17-945 intersected Lynx 1 returning 20.6 g/t Au over 2.2 metres and 7.74 g/t Au over 4.0 metres. The first interval corresponds to a quartz vein in a sericitized zone at the contact between gabbro and rhyolite with 1% disseminated and stringer pyrite. The second interval is composed of up to 5% disseminated pyrite and trace pyrite stringers at the contact between a rhyolite and a sericitized gabbro. OSK-W-17-953 intersected 6.02 g/t Au over 2.0 metres in Lynx 3. Mineralization is composed of 8% pyrite with quartz clusters and veins, hosted in a slightly sericitized and silicified rhyolite with trace disseminated and stringer pyrite. OSK-W-17-998 intersected Lynx 1 returning 15.8 g/t Au over 2.25 metres. The interval is composed of 3% disseminated pyrite and 5% pyrite stringers in a sericitized rhyolite. OSK-W-17-1006 intersected 13.8 g/t Au over 2.2 metres in Lynx 4. Mineralization is composed of local visible gold, trace disseminated pyrite and 2% pyrite stringers in a rhyolite with a strong pervasive silica flooding. OSK-W-17-1015 intersected 4.02 g/t Au over 2.1 metres and 6.26 g/t Au over 2.6 metres in Lynx 2 and 8.38 g/t Au over 2.3 metres in a crustiform vein within the Lynx Corridor. The first interval corresponds to a sericitized and silicified rhyolite containing trace disseminated pyrite and a decimetre scale quartz-tourmaline vein. The second interval is composed of 4% pyrite clusters and trace pyrite stringers in a strongly chloritized gabbro with weak silica and sericite alteration. The third interval corresponds with a decimetre scale quartz-tourmaline vein in a gabbro with sericite, silica and chlorite alteration. OSK-W-17-1019 intersected 11.3 g/t Au over 2.0 metres, 3.21 g/t Au over 2.2 metres and 9.04 g/t Au over 2.0 metres. The first interval is composed of local visible gold within a pervasive silica flooding zone with 30-40% pyrite and 5% pyrite tourmaline stringers associated with a five-centimetre tourmaline ptygmatic vein. This interval is the south-west extension of the Lynx 1 Corridor, 250 metres south-west of OSK-W-17-1052 (7.65 g/t Au over 4.1 metres, previously reported, October 30, 2017). The second interval is related to Lynx 4, geometry to be determined, and is composed of 5% pyrite stringers in a sericitized and weakly silicified porphyry felsic dike. The third interval is composed of a partially dismembered quartz vein and local visible gold. OSK-W-17-1024 intersected Lynx 1 with 3.97 g/t Au over 2.0 metres and 3.64 g/t Au over 2.0 metres. Mineralization is composed of trace disseminated pyrite in a sericitized porphyritic felsic dike. OSK-W-17-1027 returned 3.85 g/t Au over 2.0 metres, 12.2 g/t Au over 2.2 metres and 3.47 g/t Au over 2.5 metres in the Lynx Corridor. The first interval is in Lynx 2 and composed of trace disseminated pyrite in a sericitized and strongly chloritized gabbro. The second interval corresponds to a 20-centimeter-wide quartz-carbonate vein in the same gabbroic unit. The third interval is related to the Lynx HW and is composed of 20% pyrite stringers and 10% disseminated pyrite in a bleached gabbro. OSK-W-17-1028 intersected 8.18 g/t Au over 2.0 metres in the Lynx Corridor. Mineralization is composed of up to 3% pyrite clusters and 10% pyrite stringers in a sericitized and silicified porphyric felsic dike.