Category: Investors

Caribou Corridor CS1 Zone Expanded by 120 meters

(Montréal, January 23, 2017).  Osisko Mining Inc. (OSK:TSX, “Osisko” or the “Corporation”) is pleased to announce new results from the ongoing drill program at its 100% owned Windfall Lake gold project located in Urban Township, Québec.  The current 400,000 metre drill program combines definition drilling above the Red Dog intrusion (“Red Dog”), expansion drilling above and below Red Dog, expansion drilling to the NE of the main deposit, and exploration drilling on the greater deposit and Urban-Barry Project area.  Nine drills are currently active directly on the Windfall deposit, with additional drills planned to be added by month end.  Including areas outside the main deposit, a total of 12 drills are currently active.  New analytical results from five drill holes focussed on expansion and infill drilling in the Caribou and Underdog corridors are reported in this release, with significant assay results presented in the table below.

Significant new results include:  12.7 g/t Au over 5.4 metres in OSK-W-16-749 and 10.3 g/t Au over 3.0 metres in OSK-W-16-743-W2; 11.0 g/t Au over 2.4 metres and 8.13 g/t Au over 2.6 metres in OSK-W-16-743-W1.  Maps and sections showing hole locations and full analytical results are available at www.osiskomining.com.

Hole Number	Azimuth (°)	Dip (°)	Length (m)	UTM E	UTM N	Section
OSK-W-16-743 W1	333.3	-64.1	1489.5	452651	5434237	2525
OSK-W-16-743 W2	333.3	-64.1	1626.7	452651	5434237	2525
OSK-W-16-749	332.0	-57.0	553.0	452486	5434389	2450
OSK-W-16-754	331.0	-59.1	1564.5	452766	5434303	2675
OSK-W-16-756	331.0	-58.0	803.0	452809	5434392	2750

Caribou Corridor

Four of the drill holes intersected the CS1 Zone of the Caribou Corridor, expanding it to 360 metres by 200 metres.  The CS1 Zone remains open down plunge.

OSK-W-16-749 returned 12.7 g/t Au over 5.4 metres hosted in a silicified porphyry dyke containing 2% to 35% pyrite stringers and disseminations.  This intercept is located 120 metres to the southwest of previously released OSK-W-16-706 which returned 8.65 g/t Au over 3.0 metres.

OSK-W-16-743-W2 intersected 10.3 g/t Au over 3.0 metres in a bleached andesite containing 5% – 20% pyrite stringers and disseminations, expanding the CS1 Zone 120 metres down-dip.

OSK-W-16-754 assayed 7.15 g/t Au over 2.1 metres in the strongly silicified and sericitized contact between a porphyry dike and andesite containing 5-20% pyrite stringers with minor visible gold.  This hole expands the CS1 Zone 60 metres down-plunge from previously reported OBM-15-564 which returned 5.59 g/t Au over 7.4 metres.  The hole also intersected 4.94 g/t Au over 3.0 metres in the FW0 Zone and 3.66 g/t Au over 2.6 metres in the FW0 Footwall Zone, both of which contain mineralization similar in style to that above the Red Dog.

OSK-W-16-756  intersected 3.29g/t Au over 2.6 meters and extended the CS1 Zone 60 metres northeast of previously reported OBM-15-564 (5.59 g/t Au over 7.4 meters) and 95 metres above previously reported OSK-W-16-754 (7.15 g/t Au over 2.1 metres).  Mineralization comprises 15% pyrite stringers at the contact between a porphyry dike and strongly sericitized andesite.

Underdog Corridor

OSK-W-16-743-W1 targeted several parallel zones of the Underdog Corridor and intersected 5.77 g/t Au over 5.2 meters, extending the FW0 Zone by 100 metres southwest of previously reported OBM-15-560 (12.5 g/t Au over 2.0 meters).  Mineralization consists of 10% to 30% pyrite stringers in a strongly silicified fragmental porphyry dike.  The FW0 Zone has been intersected by eight drill holes to date and now defines an area 210 metres by 290 metres.

The hole also intersected the FW2 Zone assaying 8.13 g/t Au over 2.6 metres and extends the zone by 130 metres west of previously reported OSK-W-16-743 (47.0 g/t Au over 2.6 metres; 303.1 g/t Au over 2.6 metres uncut).  Gold mineralization is hosted in a silicified porphyry dike containing semi-massive pyrite.  The FW2 hanging wall returned 6.77 g/t Au over 2.1 metres in a silicified porphyry dike containing 2-5% pyrite and the FW3 Zone returned 6.29 g/t Au over 2.0 metres at the contact between felsic volcanics with 2-3% pyrite stringers and disseminations.

Qualified Person
The scientific and technical content of this news release has been reviewed, prepared and approved by Mr. Jean-Philippe Desrochers, Ph.D., P.Geo. Senior Project Manager of the Windfall Lake gold project, who is a “Qualified Person” as defined by National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101”).

Quality Control and Reporting Protocols
True widths of the new exploration intercepts below Red Dog reported in this press release have yet to be determined. Additional drilling is planned for the immediate area which will enable the true width determination. True widths of intercepts in the zones above the Red Dog are estimated at 65-80% of the reported core length intervals.  Assays are uncut except where indicated, and calculated intervals are reported over a minimum length of 2 metres using a lower cutoff of 3 g/t Au. All NQ core assays reported were obtained by either 1 kilogram whole rock metallic screen/fire assay or standard 50 gram fire-assaying with AA or gravimetric finish at ALS Laboratories in Val dOr, Québec or Sudbury, Ontario. The 1 kilogram metallic screen assay method is selected by the geologist when samples contain coarse gold or present a higher percentage of pyrite than surrounding intervals. All samples are also analyzed for multi-elements, including silver, using an Aqua Regia-ICP-AES method at ALS laboratories. Drill program design, Quality Assurance/Quality Control and interpretation of results is performed by qualified persons employing a Quality Assurance/Quality Control program consistent with NI 43-101 and industry best practices. Standards and blanks are included with every 20 samples for Quality Assurance/Quality Control purposes by the Corporation as well as the lab. Approximately 5% of sample pulps are sent to secondary laboratories for check assays.

About the Windfall Lake Gold Deposit
The Windfall Lake gold deposit is located between Val-dOr and Chibougamau in the Abitibi region of Québec, Canada. The current mineral resource comprises 2,762,000 tonnes at 8.42 g/t Au (748,000 ounces) in the indicated category and 3,512,000 tonnes at 7.62 g/t Au (860,000 ounces) in the inferred category (sourced from a technical report dated June 10, 2015 entitled “Preliminary Economic Assessment of the Windfall Lake Gold Property, Québec, Canada” with an effective date of April 28, 2015, prepared in accordance with NI 43-101). The Windfall Lake gold deposit is currently one of the highest grade resource-stage gold projects in Canada. The bulk of the mineralization occurs in the Main Zone, a southwest/northeast trending zone of stacked mineralized lenses, measuring approximately 600 metres wide and at least 1,400 metres long. The deposit is well defined from surface to a depth of 500 metres, and remains open along strike and at depth. Mineralization has been identified only 30 metres from surface in some areas and as deep as 870 metres in others, with significant potential to extend mineralization up and down-plunge and at depth.

About Osisko Mining Inc.
Osisko is a mineral exploration company focused on the acquisition, exploration, and development of precious metal resource properties in Canada. Osisko holds a 100% in the high-grade Windfall Lake gold deposit located between Val-dOr and Chibougamau in Québec and holds a 100% undivided interest in a large area of claims in the surrounding Urban Barry area (82,400 hectares), a 100% interest in the Marban project located in the heart of Québecs prolific Abitibi gold mining district, and properties in the Larder Lake Mining Division in northeast Ontario, including the Jonpol and Garrcon deposits on the Garrison property, the Buffonta past producing mine and the Gold Pike mine property. The Corporation also holds interests and options in a number of additional properties in northern Ontario.  Osisko continues to be well financed and has approximately $90 million in cash and cash equivalents as well as equity investments of approximately $50 million.

Cautionary Note Regarding Forward-Looking Information
This news release contains “forward-looking information” within the meaning of the applicable Canadian securities legislation that is based on expectations, estimates, projections and interpretations as at the date of this news release. The information in this news release about the increase in the size of the drill program by 250,000 metres; the type of drilling included in the drill program (definition drilling above Red Dog, expansion drilling above and below Red Dog, expansion drilling to the NE of the main deposit, and exploration drilling on the greater deposit and Urban-Barry project area); additional drills being added in the coming months; the successful results from the 200 metres of step-out lines over 600 metres of strike length northeast from the main Windfall mineralization; the ability of encouraging intersections to provide the Corporation with a wide expanse of new infill drilling targets, to be the objective of the additional 250,000 metres of drilling; potential mineralization; the ability to realize upon any mineralization in a manner that is economic; the ability to complete any proposed exploration activities and the results of such activities; the continuity or extension of any mineralization; and any other information herein that is not a historical fact may be “forward-looking information”. Any statement that involves discussions with respect to predictions, expectations, interpretations, beliefs, plans, projections, objectives, assumptions, future events or performance (often but not always using phrases such as “expects”, or “does not expect”, “is expected”, “interpreted”, “managements view”, “anticipates” or “does not anticipate”,  “plans”, “budget”, “scheduled”, “forecasts”, “estimates”, “believes” or “intends” or variations of such words and phrases or stating that certain actions, events or results “may” or “could”, “would”, “might” or “will” be taken to occur or be achieved) are not statements of historical fact and may be forward-looking information and are intended to identify forward-looking information. This forward-looking information is based on reasonable assumptions and estimates of management of the Corporation, at the time it was made, involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of Osisko to be materially different from any future results, performance or achievements expressed or implied by such forward-looking information. Such factors include, among others, risks relating to the ability of exploration activities (including drill results) to accurately predict mineralization; errors in managements geological modelling; the ability of Osisko to complete further exploration activities, including drilling; property interests; the ability of the Corporation to obtain required approvals and complete transactions on terms announced; the results of exploration activities; risks relating to mining activities; the global economic climate; metal prices; dilution; environmental risks; and community and non-governmental actions. Although the forward-looking information contained in this news release is based upon what management believes, or believed at the time, to be reasonable assumptions, Osisko cannot assure shareholders and prospective purchasers of securities of the Corporation that actual results will be consistent with such forward-looking information, as there may be other factors that cause results not to be as anticipated, estimated or intended, and neither Osisko nor any other person assumes responsibility for the accuracy and completeness of any such forward-looking information. Osisko does not undertake, and assumes no obligation, to update or revise any such forward-looking statements or forward-looking information contained herein to reflect new events or circumstances, except as may be required by law.

For further information please contact:
John Burzynski, President and Chief Executive Officer
Telephone: (416) 363-8653

(Montréal, January 16, 2017).  Osisko Mining Inc. (OSK:TSX, “Osisko” or the “Corporation”) is pleased to announce new results from the ongoing drill program at its 100% owned Garrison gold project located in Garrison Township, Ontario.  The current 35,000 metre drill program (recently increased from 20,000 metres) is designed to further test the known Jonpol and Garrcon gold zones, with six drill rigs currently active on the property.  A total of 22 new holes are reported in this release, with significant assay results presented in the table below.

Significant new results include:  2.27 g/t Au over 46.4 metres in OSK-G16-213X;  2.85 g/t Au over 19.6 metres in OSK-G16-318;  6.66 g/t Au over 6.8 metres in OSK-G16-319;  3.1 g/t Au over 12.0 metres (4.96 g/t Au over 12.0 metres uncut) in OSK-G16-314A;  and 3.57 g/t Au over 8.0 metres in OSK-G16-209X.

The new results have demonstrated the potential for expansion of the previously defined Garrcon, Jonpol and 903 mineralized zones at the Garrison project.  The ongoing drill program for 2017 will continue to follow new extensions of these mineralized zones to further define the scale of mineralization at Garrison.

Maps and sections showing hole locations and complete drilling results are available at www.osiskomining.com. 

Notes:  True Widths are estimated at 65 – 80% of the reported core length interval.  See “Quality Control” below.

DDH OSK-G16-209X tested the Garrcon Zone 50 metres west of the pre-2016 drilling, returning 3.57 g/t Au over 8.0 metres within a broad quartz carbonate breccia hosted in metasediments.  A second new zone was intersected at a vertical depth of 840 metres returning 2.2 metres averaging 19.4 g/t Au uncut (2.2 metres averaging 6.8 g/t Au cut), including 85.5 g/t Au over 0.5m. 

DDH OSK-G16-213X targeted the Garrcon Zone between two historic drill holes, returning a broad interval of 46.4 metres averaging 2.27 g/t Au within a quartz carbonate breccia, hosted in metasediments (corresponding to a zone intersected in historic drilling and hole OSK-G16-209x located 150 metres to the west).  The hole also intersected 26.0 g/t Au over 1.0 metre in a second intercept at vertical depth of 740 metres.

OSK-G16-301 tested the strike extension of the Garrcon Zone 400 metres east of the current resource area and 160 metres below historical drilling.  The hole returned 2.72 g/t over 4.0 metres.

OSK-G16-302 targeted the Jonpol Zone, returning 3.46 g/t Au over 0.5 metres.  OSK-G16-303 targeted the Jonpol Zone, returning 2.44 g/t Au over 7.6 metres.  OSK-G16-304 intersected 1.26 g/t Au over 34.9 metres, 550 metres east and along strike of the Garrcon Zone.

OSK-G16-305 tested the 903 Zone (south), intersecting 0.88 g/t Au over 14.9 metres.  This new mineralized horizon is hosted within a thin unit of silicified and pyrite-mineralized metasediments similar to the Garrcon Zone 1200 metres to the east.  

OSK-G16-306 intersected 3.20 g/t over 8.8 metres below the Jonpol Zone, 100 metres above previously reported OSK-G16-300 (which returned 14.9 g/t over 7.7 metres).  The zone shows a very strong correlation and continuity with the mineralized zones encountered in holes OSK-G16-300, -303 and -308.

OSK-G16-308 was drilled 350 metres below the Jonpol Zone, 150 metres below previously reported hole OSK-G16-300.  The hole intersected 3.40 g/t Au over 7.9 metres, and is interpreted to correlate with the zone intercepted in OSK-G16-300.

OSK-G16-310 was drilled 100 metres east of OSK-G16-304 along the strike extension of the Garrcon Zone, intersecting similar geology to OSK-G16-304, returning 2.00 g/t Au over 3.6 metres.

OSK-G16-313 hit two shallow intersections of 6.1 metres averaging 1.78 g/t Au; and 5.55 g/t Au over 2.0 metres in syenite similar to the nearby 903 Zone.  The new intercepts demonstrate the potential for additional syenite hosted zones within the southwestern portion of the Garrison property.

OSK-G16-314 intersected 30.0 g/t Au over 0.4 metres (139 g/t over 0.4m uncut) within the Garrcon Zone.  OSK-G16-314A intersected 3.14 g/t Au over 12.0 metres (4.96 g/t Au over 12.0 metres uncut) and a second interval of 1.52 g/t Au over 30 metres in the Garrcon Zone.  The hole also successfully identified mineralization 100 metres below the Jonpol Zone,   intersecting 4.98 g/t Au over 1.7 metres and a second interval returning 5.60 g/t over 1.0 metre.

OSK-G16-315 targeted the western extension of the Jonpol Zone, intersecting a broad zone of mineralization averaging 1.08 g/t Au over 17.0 metres.

OSK-G16-316 intersected a new zone near the top of the hole hosted in syenite (and analogous to the nearby 903 Zone style of mineralization) extending the footprint of the 903 Zone (north).  Within the 903 Zone, the hole intersected 29.9 g/t Au over 2.0 metres and within the Jonpol Zone intersected 3.83 g/t Au over 2.6 metres.

OSK-G16-318 was the first drill hole of the current drilling campaign to target expansion of the 903 Zone (Syenite).  The hole intersected 2.85 g/t Au over 19.6 metres.  The 903 Zone (Syenite) lies within the west extension of the Destor Porcupine Fault Zone within the Garrison property.

OSK-G16-319 targeted the 903 Zone syenite 100 metres west of OSK-G16-318, and intersected 6.66 g/t Au over 6.8 metres and a second mineralized intercept averaging 2.12 g/t over 14.0 metres, and a third intercept returning 1.47 g/t Au over 7.5 metres.  This hole shows good correlation and continuity with OSK-G16-318 and historic drilling.  

OSK-G16-320 was aimed at investigating the previously untested 903 Zone (north horizon), and intersected 0.98 g/t over 18.3 metres.  

OSK-G16-307 did not intersect any significant mineralization. OSK-G16-309 was abandoned prior to reaching target. OSK-G16-311 did not intersect any significant mineralization.

Qualified Person
The scientific and technical content of this press release has been reviewed, prepared and approved by Mr. Greg Matheson, P.Geo. Senior Project Manager of the Garrison gold project, who is a “Qualified Person” as defined by National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101”).

Quality Control
True widths of the new exploration intercepts reported in this press release have yet to be determined. Additional drilling is planned for the immediate area which will enable the true width determination. Assays are uncut except where indicated, and calculated intervals are reported over a minimum length of 2 metres using a lower cutoff of 3 g/t Au. All HQ core assays reported were obtained by either whole sample rock metallic screen/fire assay or standard 30 gram fire-assaying with AA finish at SGS Minerals Services in Cochrane, Ontario. The whole sample metallic screen assay method is selected by the geologist when samples contain coarse gold or any samples displaying gold initial fire assay values greater than 4g/t. Drill program design, Quality Assurance/Quality Control and interpretation of results is performed by qualified persons employing a Quality Assurance/Quality Control program consistent with NI 43-101 and industry best practices. Standards and blanks are included with every 20 samples for Quality Assurance/Quality Control purposes by the Corporation as well as the lab. Approximately 5% of sample pulps are sent to secondary laboratories for check assays.

About the Garrison Project
The Garrison Project area is comprised of 214 mineral claims, 25 mining leases, and 87 patent claims encompassing approximately 8,000 hectares.

Both Garrcon and Jonpol have resource estimates that are described in a technical report prepared in accordance with NI 43-101, which was completed by a previous operator Northern Gold Mining Inc. (entitled “Technical Report on the Golden Bear Project – Garrison Property: Larder Lake Mining Division, Garrison Township, Ontario, Canada”) dated December 30, 2013, with an effective date of December 30, 2013 (the “Garrison Technical Report”). The Garrison Technical Report was prepared by A.C.A. Howe International Limited for Northern Gold Mining Inc. (a wholly-owned subsidiary of Osisko) and is available on Osiskos website at www.osiskomining.com and on SEDAR under Northern Gold Mining Inc.s issuer profile at www.sedar.com.

Resource estimates were conducted by A.C.A. Howe International Limited according to CIM standards. The Garrcon Zone estimates showed 15.1 million tonnes with an average grade of 1.07 g/t Au (521,000 oz) in measured resources; 14.1 million tonnes averaging 1.16 g/t Au (526,000 oz) in indicated resources; and 1.7 million tonnes averaging 0.72 g/t Au (39,000 oz) in inferred resources. Potential underground resources of 5.1 million tonnes averaging 3.49 g/t Au (577,000 oz) in the inferred category were also outlined. Resources were reported at a cut-off grade of 0.4 g/t Au for open pit extraction and 1.5 g/t in a bulk underground mining scenario using a gold price of US$1,250/oz.

At the Jonpol Zone, resources were estimated as 0.87 million tonnes averaging 5.34 g/t Au (150,000 oz) in the indicated category; and 1.07 million tonnes averaging 5.56 g/t Au (192,000 oz) in inferred resources. Resources were reported at a cut-off grade of 3.0 g/t Au and assume an underground extraction scenario using a gold price of US$1,250/oz.

Readers are cautioned that inferred resources have a great amount of uncertainty as to their existence and as to whether they can be mined economically. It cannot be assumed that all or any part of the inferred resources will ever be upgraded to a higher category. Mineral resources are not mineral reserves and do not have demonstrated economic viability.

Garrcon Zone
The Garrcon Zone has a shallow plunge eastward along the footwall of the Destor-Porcupine Fault Zone with the bulk of the resource in the western, more densely drilled area. The zone is exposed at surface and has potential for open pit bulk mining at an estimated overall stripping ratio of 1.8:1. There is potential for additional underground resources below the pit and along the easterly plunge of the zone, which is open for further exploration down dip and along strike.

The Garrcon shaft was sunk in 1935 and 1936 by the Consolidated Mining and Smelting Co. of Canada (“Cominco”) and the Shaft and South Zones were tested for high grade gold mineralization. Cominco drove approximately 1,430 metres of drifts and cross cuts, mining underground veins. Diamond drilling by Cominco and Lac Minerals Ltd. in the mid-to-late 1980s identified broad sections of low grade mineralization. In 2006-2007, ValGold Resources Ltd. conducted additional drilling confirming these zones. From 2009-2013 Northern Gold Mining Inc. conducted 97,000 metres of diamond drilling which delineated the current resource.

In 2014, Northern Gold Mining Inc. was granted a trial mining permit allowing the extraction of up to 150,000 tonnes. Northern Gold Mining Inc. mined 73,534 dry tonnes which was processed at the nearby Holt mill facility recovering 3,516.3 oz at an average head grade of 1.55 g/t and recovery of 95.9%. The trial production permit remains active.

Jonpol Zone
Jonpol is situated in the Munro Fault Zone, a west striking splay off the north side of the Destor-Porcupine Fault. Hosted in a shear zone tens of metres wide in altered mafic volcanic rocks, the deposit consists of four high grade gold mineralized zones (JP, JD, RP and East) over a strike length of 1.7 kilometers. Gold mineralization is hosted in quartz carbonate veins, in mafic and ultramafic host rocks, and is associated with intense albite and/or sericite alteration and pyrite mineralization.

In 1997, a 49,087 tonne bulk sample was extracted from the central part of the JP zone by Hillsborough Resources Limited with an average grade of 6.7 g/t which produced 9,476 ounces Au. From 1985-2013, over 130,000 metres of drilling was completed on the property by previous operators. Development work on the JP zone included the sinking of a 184 metre shaft as well as development of a ramp to the 150 metre level with mining on six sublevels. The Jonpol infrastructure underwent reclamation in the late 1990s and was closed out in 2001, but the existing ramp and shaft are preserved.

About Osisko Mining Inc.
Osisko is a mineral exploration company focused on the acquisition, exploration, and development of precious metal resource properties in Canada. Osisko holds a 100% in the high-grade Windfall Lake gold deposit located between Val-dOr and Chibougamau in Québec and holds a 100% undivided interest in a large area of claims in the surrounding Urban Barry area (82,400 hectares), a 100% interest in the Marban project located in the heart of Québecs prolific Abitibi gold mining district, and properties in the Larder Lake Mining Division in northeast Ontario, including the Garrcon and Jonpol zones on the Garrison property, the Buffonta past producing mine and the Gold Pike mine property. The Corporation also holds interests and options in a number of additional properties in northern Ontario.  Osisko continues to be well financed and has approximately $90 million in cash and cash equivalents as well as equity investments of approximately $50 million.

Cautionary Note Regarding Forward-Looking Information
This news release contains “forward-looking information” within the meaning of the applicable Canadian securities legislation that is based on expectations, estimates, projections and interpretations as at the date of this news release. The information in this news release about the ongoing drill program at the Garrison gold project; results of the current 35,000 metre drill program; the significance of new drill results reported in this press release; the ability of new drill results to demonstrate potential for expansion of the previously defined Garrcon, Jonpol and 903 mineralized zones at the Garrison project; the scope of the 2017 drill program; that the 2017 drill program will follow new extensions of these mineralized zones to further define the scale of mineralization at the Garrison project; potential mineralization; the ability to realize upon any mineralization in a manner that is economic; the ability to complete any proposed exploration activities and the results of such activities; the continuity or extension of any mineralization; and any other information herein that is not a historical fact may be “forward-looking information”. Any statement that involves discussions with respect to predictions, expectations, interpretations, beliefs, plans, projections, objectives, assumptions, future events or performance (often but not always using phrases such as “expects”, or “does not expect”, “is expected”, “interpreted”, “managements view”, “anticipates” or “does not anticipate”,  “plans”, “budget”, “scheduled”, “forecasts”, “estimates”, “believes” or “intends” or variations of such words and phrases or stating that certain actions, events or results “may” or “could”, “would”, “might” or “will” be taken to occur or be achieved) are not statements of historical fact and may be forward-looking information and are intended to identify forward-looking information. This forward-looking information is based on reasonable assumptions and estimates of management of the Corporation, at the time it was made, involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of Osisko to be materially different from any future results, performance or achievements expressed or implied by such forward-looking information. Such factors include, among others, risks relating to the ability of exploration activities (including drill results) to accurately predict mineralization; errors in managements geological modelling; the ability of Osisko to complete further exploration activities, including drilling; property interests; the ability of the Corporation to obtain required approvals and complete transactions on terms announced; the results of exploration activities; risks relating to mining activities; the global economic climate; metal prices; dilution; environmental risks; and community and non-governmental actions. Although the forward-looking information contained in this news release is based upon what management believes, or believed at the time, to be reasonable assumptions, Osisko cannot assure shareholders and prospective purchasers of securities of the Corporation that actual results will be consistent with such forward-looking information, as there may be other factors that cause results not to be as anticipated, estimated or intended, and neither Osisko nor any other person assumes responsibility for the accuracy and completeness of any such forward-looking information. Osisko does not undertake, and assumes no obligation, to update or revise any such forward-looking statements or forward-looking information contained herein to reflect new events or circumstances, except as may be required by law.

For further information please contact:
John Burzynski, President and Chief Executive Officer
Telephone: (416) 363-8653

Main Corridors of Mineralization and Alteration Extended Across 600 Metres
Lynx Zone Discovery Extended 260 Metres

(Montréal, January 11, 2017).  Osisko Mining Inc. (OSK:TSX, “Osisko” or the “Corporation”) is pleased to announce new results from the ongoing drill program at its 100% owned Windfall Lake gold project located in the Urban Township, Québec.  The drill program has recently been increased by 250,000 metres (for a total of 400,000 metres) and combines definition drilling above the Red Dog intrusion (“Red Dog”), expansion drilling above and below Red Dog, expansion drilling to the NE of the main deposit, and exploration drilling on the greater deposit and Urban-Barry Project area.  Nine drills are currently active in and around the Windfall deposit and three on the Urban-Barry and Black Dog properties, with additional drills planned to be added in the coming month.  New analytical results from six drill holes focussed on expansion drilling to the NE are reported in this release, with significant assay results presented in the table below.

Significant new results include:  42.7 g/t Au over 9.0 metres (95.3 g/t Au over 9.0 metres uncut), 14.1 g/t Au over 3.0 metres and 7.79 g/t Au over 4.5 metres in OSK-W-16-760; 41.8 /t Au over 2.0 metres and 17.0 g/t Au over 2.3 metres in OSK-W-16-750; 11.8 g/t Au over 6.0 metres and 8.12 g/t Au over 2.0 metres in DDH OSK-W-16-755; 9.66 g/t Au over 2.3 metres and 7.21 g/t Au over 2.6 metres in OSK-W-16-740; and 6.57 g/t Au over 2.3 metres in OSK-W-16-751.

The new results continue to show the potential for gold mineralization in the NE step-out extension of the main deposit, on the 200 metre, 400 metre and 600 metre sections from the limit of the 2014 mineral resource estimate completed by the previous operator.  The 800 metre step out holes will commence shortly, and planning is under way for additional new 500 metre step out fences NE of the 800 metre line.  New mineralized zones have been discovered in the emerging Lynx corridor.  Results from OSK-W-16-740 and OSK-W-16-755 are interpreted to extend the Lynx Zone to a current strike length of 260 metres, and the zone remains open to the NE.

President and CEO John Burzynski commented:  “These new results from our drilling campaign on 200 metre step-out lines northeast from the main Windfall deposit are very encouraging and are confirming our working interpretation of the deposit, greatly expanding the mineralized footprint.  Our step-outs have intersected the known corridors of mineralization and alteration moving to the northeast, and we have a developing discovery with our new high-grade Lynx Corridor.  We are soon commencing the 800 metre step-out fence and in the coming month plan to start systematic 500 metre step-outs from there, as we pursue the Windfall deposit along the NE-striking, 2.6 kilometre-long magnetic low feature.  These very encouraging intersections have provided us with a wide program of new infill drilling which will be the target of much of our newly planned 250,000 metres of drilling in 2017.”

Maps and sections showing drill hole locations and full analytical results are available at www.osiskomining.com.

Notes:

1. For complete drilling results please seewww.osiskomining.com
2. True Widths are estimated at 65 – 80% of the reported core length interval.  See “Quality Control” below
3. Interval previously reported. Newly received assay results expand the width of this intersection in the Lynx Zone.
4. The step-out distances are measured from the limit of the 2014 mineral resource.

Definitions:  Vn = vein;  HW = hanging wall;  FW = foot wall

OSK-W-16-751 tested the Caribou and Zone 27 corridors on the 200 metre step-out section.  The targeted CN2 Zone returned 6.57 g/t Au over 2.3 metres in a silicified porphyry dyke containing 3% pyrite stringers.  No significant mineralization was intersected at the interpreted projection of Zone 27. The hole was stopped in the Red Dog dike that cross-cuts Underdog at this location.

OSK-W-16-759 targeted the extension of the Caribou Zone on the 200 m step-out section and intersected 4.2 g/t Au over 4.4 metres in an altered felsic dyke containing up to 25% pyrite stringers and disseminations.  The CN2 Zone returned 1.53 g/t Au over 4.1 metres in a sericitized and silicified rhyolite containing 5-7% pyrite stringers and disseminations.  No significant mineralization was intersected at the projected location of Zone 27 and the hole was stopped in the Red Dog dike that cross-cuts Underdog at this location.

OSK-W-16-740 was designed to test the 400 metre step-out section extension of the Caribou Corridor.  A new intersection interpreted to be the WSW extension of the newly discovered Lynx Zone returned 4.49 g/t Au over 2.0 metres, 170 metres from discovery hole OSK-W-16-760 and 90 metres below OSK-W-16-755, in a sericitized and silicified rhyolite with 1-2% pyrite stringers and disseminations.  A second new parallel zone located 50 metres into the footwall of the Lynx Zone was also discovered, returning 4.72 g/t Au over 8.2 metres, confirming the potential for additional mineralized zones in the emerging Lynx Corridor.  One of the intended targets, the CN2 Zone of the Caribou Corridor returned 9.66 g/t Au over 2.3 metres in a strongly silicified and sericitized porphyry dyke containing 5% disseminated pyrite.  This interval starts at 418.2m and correlates with the intercept of 6.57 g/t Au over 2.3 metres in OSK-16-W-751, located 210 metres to the SW.  Zone 27 and the Underdog Corridor were not intersected as they are cross-cut by Red Dog at this location.

OSK-W-16-755 was drilled on the 400 metre step-out section and is interpreted to have extended the up-dip projection of the Lynx Zone by 260 metres to the WSW, returning 11.8 g/t Au over 6.0 metres in sericitized rhyolite containing 1% pyrite stringers and disseminations. The interpreted Lynx footwall zone returned 8.12 g/t Au over 2.0 metres in a silicified andesite at the contact with a porphyry dyke and correlates with the intercept of 4.72 g/t Au over 8.2m at 248.5 metres in OSK-W-16-740, located 100 metres below.  The CN2 Zone in the Caribou Corridor was intersected from 618.0 to 621.8 metres in a semi-massive to massive pyrite interval containing 2-5% sphalerite in a sericitized porphyry dyke.  The zone returned 2.08 g/t Au over 4.8 metres.  There was no significant mineralization or alteration at the interpreted projection of Zone 27.  The hole was stopped in Red Dog and did not test the Underdog Corridor.

OSK-W-16-750, located on the 600 metre step out fence intersected the Lynx Zone projection, 90 metres below OSK-W-16-760 in a sericitized rhyolite containing 1% pyrite and contained anomalous gold values.  The hole also intersected a crustiform vein which returned 17.0 g/t Au over 2.3 metres, and further downhole intersected the ENE extension of the Caribou Zone returning 41.8 g/t Au over 2.0 metres in a sericitized rhyolite with 1% pyrite-chalcopyrite stringers. This hole also successfully intersected the FW4 Zone below Red Dog, returning 4.65 g/t Au over 2.0 metres in a sericitized and silicified andesite with 1-5% pyrite stringers and disseminations.

OSK-W-16-760 targeted the NE extensions of the Caribou Zone, Zone 27 and Underdog.  Additional new assay results were received for the Lynx Zone discovery intersection (previously reported as 5.7 metres of 65.0 g/t Au, see December 5, 2016 press release), increasing the width of the interval to 9.0 metres averaging 42.7 g/t Au (9.0 metres averaging 95.3 g/t Au uncut).  A new zone located in the hanging wall of the Lynx Zone (10 metres uphole from the discovery intersection) returned 14.1 g/t Au over 3.0 metres, hosted in a sericitized rhyolite containing 2-5% pyrite stringers and visible gold.  The drill hole also intersected crustiform veins below the Lynx Zone assaying 7.79 g/t Au over 4.5 metres and 5.50 g/t Au over 2.7 metres respectively (the latter vein assaying 5.50 g/t Au over 2.7 metres is along the same structural corridor and inside the same gabbro unit as the crustiform vein of DDH OSK-W-16-750 reported above).  Analytical results from the intended targets (Caribou, Zone 27 and Underdog corridors) are pending.

Qualified Person
The scientific and technical content of this news release has been reviewed, prepared and approved by Mr. Jean-Philippe Desrochers, Ph.D., P.Geo. Senior Project Manager of the Windfall Lake gold project, who is a “Qualified Person” as defined by National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101”).

Quality Control and Reporting Protocols
True widths of the new exploration intercepts below Red Dog reported in this press release have yet to be determined. Additional drilling is planned for the immediate area which will enable the true width determination. True widths of intercepts in the zones above the Red Dog are estimated at 65-80% of the reported core length intervals.  Assays are uncut except where indicated, and calculated intervals are reported over a minimum length of 2 metres using a lower cutoff of 3 g/t Au. All NQ core assays reported were obtained by either 1 kilogram whole rock metallic screen/fire assay or standard 50 gram fire-assaying with AA or gravimetric finish at ALS Laboratories in Val dOr, Québec or Sudbury, Ontario. The 1 kilogram metallic screen assay method is selected by the geologist when samples contain coarse gold or present a higher percentage of pyrite than surrounding intervals. All samples are also analyzed for multi-elements, including silver, using an Aqua Regia-ICP-AES method at ALS laboratories. Drill program design, Quality Assurance/Quality Control and interpretation of results is performed by qualified persons employing a Quality Assurance/Quality Control program consistent with NI 43-101 and industry best practices. Standards and blanks are included with every 20 samples for Quality Assurance/Quality Control purposes by the Corporation as well as the lab. Approximately 5% of sample pulps are sent to secondary laboratories for check assays.

About the Windfall Lake Gold Deposit
The Windfall Lake gold deposit is located between Val-dOr and Chibougamau in the Abitibi region of Québec, Canada. The current mineral resource comprises 2,762,000 tonnes at 8.42 g/t Au (748,000 ounces) in the indicated category and 3,512,000 tonnes at 7.62 g/t Au (860,000 ounces) in the inferred category (sourced from a technical report dated June 10, 2015 entitled “Preliminary Economic Assessment of the Windfall Lake Gold Property, Québec, Canada” with an effective date of April 28, 2015, prepared in accordance with NI 43-101). The Windfall Lake gold deposit is currently one of the highest grade resource-stage gold projects in Canada. The bulk of the mineralization occurs in the Main Zone, a southwest/northeast trending zone of stacked mineralized lenses, measuring approximately 600 metres wide and at least 1,400 metres long. The deposit is well defined from surface to a depth of 500 metres, and remains open along strike and at depth. Mineralization has been identified only 30 metres from surface in some areas and as deep as 870 metres in others, with significant potential to extend mineralization up and down-plunge and at depth.

About Osisko Mining Inc.
Osisko is a mineral exploration company focused on the acquisition, exploration, and development of precious metal resource properties in Canada. Osisko holds a 100% in the high-grade Windfall Lake gold deposit located between Val-dOr and Chibougamau in Québec and holds a 100% undivided interest in a large area of claims in the surrounding Urban Barry area (82,400 hectares), a 100% interest in the Marban project located in the heart of Québecs prolific Abitibi gold mining district, and properties in the Larder Lake Mining Division in northeast Ontario, including the Jonpol and Garrcon deposits on the Garrison property, the Buffonta past producing mine and the Gold Pike mine property. The Corporation also holds interests and options in a number of additional properties in northern Ontario.  Osisko continues to be well financed and has approximately $90 million in cash and cash equivalents as well as equity investments of approximately $50 million.

Cautionary Note Regarding Forward-Looking Information
This news release contains “forward-looking information” within the meaning of the applicable Canadian securities legislation that is based on expectations, estimates, projections and interpretations as at the date of this news release. The information in this news release about the increase in the size of the drill program by 250,000 metres; the type of drilling included in the drill program (definition drilling above Red Dog, expansion drilling above and below Red Dog, expansion drilling to the NE of the main deposit, and exploration drilling on the greater deposit and Urban-Barry project area); additional drills being added in the coming months; the successful results from the 200 metres of step-out lines over 600 metres of strike length northeast from the main Windfall mineralization; the ability of encouraging intersections to provide the Corporation with a wide expanse of new infill drilling targets, to be the objective of the additional 250,000 metres of drilling; potential mineralization; the ability to realize upon any mineralization in a manner that is economic; the ability to complete any proposed exploration activities and the results of such activities; the continuity or extension of any mineralization; and any other information herein that is not a historical fact may be “forward-looking information”. Any statement that involves discussions with respect to predictions, expectations, interpretations, beliefs, plans, projections, objectives, assumptions, future events or performance (often but not always using phrases such as “expects”, or “does not expect”, “is expected”, “interpreted”, “managements view”, “anticipates” or “does not anticipate”,  “plans”, “budget”, “scheduled”, “forecasts”, “estimates”, “believes” or “intends” or variations of such words and phrases or stating that certain actions, events or results “may” or “could”, “would”, “might” or “will” be taken to occur or be achieved) are not statements of historical fact and may be forward-looking information and are intended to identify forward-looking information. This forward-looking information is based on reasonable assumptions and estimates of management of the Corporation, at the time it was made, involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of Osisko to be materially different from any future results, performance or achievements expressed or implied by such forward-looking information. Such factors include, among others, risks relating to the ability of exploration activities (including drill results) to accurately predict mineralization; errors in managements geological modelling; the ability of Osisko to complete further exploration activities, including drilling; property interests; the ability of the Corporation to obtain required approvals and complete transactions on terms announced; the results of exploration activities; risks relating to mining activities; the global economic climate; metal prices; dilution; environmental risks; and community and non-governmental actions. Although the forward-looking information contained in this news release is based upon what management believes, or believed at the time, to be reasonable assumptions, Osisko cannot assure shareholders and prospective purchasers of securities of the Corporation that actual results will be consistent with such forward-looking information, as there may be other factors that cause results not to be as anticipated, estimated or intended, and neither Osisko nor any other person assumes responsibility for the accuracy and completeness of any such forward-looking information. Osisko does not undertake, and assumes no obligation, to update or revise any such forward-looking statements or forward-looking information contained herein to reflect new events or circumstances, except as may be required by law.

For further information please contact:
John Burzynski, President and Chief Executive Officer
Telephone: (416) 363-8653

(Montréal, January 5, 2017).  Osisko Mining Inc. (OSK:TSX, “Osisko” or the “Corporation”) is pleased to announce new results from the ongoing drill program at its 100% owned Windfall Lake gold project located in the Urban Township, Québec.  The drill program has recently been increased by 250,000 metres for the 2017 season (for a total of 400,000 metres) and combines definition drilling above the Red Dog intrusion (“Red Dog”), expansion drilling above and below Red Dog, expansion drilling to the NE of the main mineralization, and exploration drilling on the greater deposit and Urban-Barry Project area.  Nine drills are currently active in and around the Windfall deposit and three on the Urban-Barry and Souart properties, with additional drills planned to be added in the coming month.  Data from seven new drill holes are reported in this release, with significant assay results presented in the table below.

New results include:  47g/t Au over 2.6 metres (303 g/t Au over 2.6 metres uncut) in DDH OSK-W-16-743;  8.7 g/t Au over 6.8 metres (11.6 g/t Au over 6.8 metres uncut) in OSK-W-16-735-W1;  11.7 g/t Au over 5.3 metres, 7.9 g/t Au over 9.8 metres and 12.2 g/t Au over 3.5 metres in OSK-W-16-735-W2;  and 16.5 g/t Au over 3.7 metres in OSK-W-16-746.

The new results continue to demonstrate the continuity of the gold mineralization in the main deposit, and the continued high potential for significant new mineralization at depth below Red Dog.

Maps and sections showing drill hole locations are available at www.osiskomining.com. 

Notes:

1. For complete drilling results please seewww.osiskomining.com
2. True Widths are estimated at 65 – 80% of the reported core length interval.  See “Quality Control” below

Full analytical results from the new drill holes are available at www.osiskomining.com

DDH OSK-W-16-735-W1 tested several zones in the Underdog corridor.  The FW1 Zone returned 8.7 g/t Au over 6.8 metres (11.6 g/t Au over 6.8 metres uncut) 20 metres ENE from previously reported hole OSK-W-16-735 (14.1 g/t Au over 2.1 metres).  Visible gold is associated with pyrite stockwork in a strongly silicified and sericitized felsic porphyry.  The FW3 Zone returned 1.0 g/t Au over 5.7 metres in an altered felsic porphyry showing the continuity of the mineralized system.

DDH OSK-W-16-735-W2 intersected the FW1 Zone, 30 metres NE of DDH OSK-W-16-735-W1, returning 12.2 g/t Au over 3.5 metres and 6.8 g/t Au over 2.8 metres.  The disseminated pyrite and pyrite stockwork are included in a 16 metres wide silicified and sericitized corridor.

The hanging wall of the FW3 Zone returned 7.9 g/t Au over 9.8 metres and the footwall 11.7 g/t Au over 5.3 metres.  Both intersections are included in a 24 metre wide silicified and sericitized corridor. Gold mineralization is associated with pyrite stockwork and altered felsic porphyry.

DDH OSK-W-16-743 intersected 3.4 g/t Au over 9.7 metres in the Underdog Corridor and extends the FW1 Zone by 100 metres below previously reported hole OBM-15-560 (5.7 g/t Au over 13 metres,).  Mineralization includes pyrite stringers, disseminated chalcopyrite and quartz-tourmaline veins.  The FW2 Zone was extended by 100 metres vertically with 47.0 g/t Au over 2.6 metres (303.1 g/t Au over 2.6 metres uncut).

DDH OSK-W-16-744 was an infill hole in the Caribou Zone which intersected 5.0 g/t Au over 9.0 metres.  Mineralization consists of pyrite stringers hosted in a felsic porphyry.  The intersection stepped 20 metres above previously reported DDH OSK-W-16-720 (5.6 g/t Au over 4.4).  The hole also intersected Zone 27 returning 4.9 g/t Au over 16.0 metres associated with pyrite stringers in a strongly silicified and sericitized felsic porphyry.  The intersection is an infill step 30 metres NE of previously reported DDH OBM-16-689 (4.7 g/t Au over 2.1 metres,).

DDH OSK-W-16-746 was an infill hole in the Caribou Zone which returned 5.5 g/t Au over 5.2 metres inside a 14 metre wide strongly silicified rhyolite.  Mineralization comprises disseminated pyrite and pyrite stringers.  The hole also intersected tension veins which returned 16.5 g/t Au over 3.7 metres near the Red Dog contact.

DDH OSK-W-16-747 was an infill hole in the Caribou Zone which returned 13.7 g/t Au over 2.4 metres.  Mineralization is composed of pyrite stockwork in a sericitized rhyolite.  The Caribou South 1 Zone returned 11.4 g/t Au over 2.0 metres in an altered andesite containing 1% pyrite stockwork.

DDH OSK-W-16-753 intersected 7.9 g/t over 7.5 metres in the Caribou Corridor and extended the CS3 Zone 80 metres West of previously reported hole OSK-W-16-708-W2 (7.4 g/t Au over 2.2 metres,).  Mineralization is composed of pyrite stringers and disseminated chalcopyrite in a strongly silicified andesite.

Qualified Person
The scientific and technical content of this news release has been reviewed, prepared and approved by Mr. Jean-Philippe Desrochers, Ph.D., P.Geo. Senior Project Manager of the Windfall Lake gold project, who is a “Qualified Person” as defined by National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101”).

Quality Control
True widths of the new exploration intercepts below Red Dog reported in this press release have yet to be determined. Additional drilling is planned for the immediate area which will enable the true width determination. True widths of intercepts in the zones above the Red Dog are estimated at 65-80% of the reported core length intervals.  Assays are uncut except where indicated. All NQ core assays reported were obtained by either 1 kilogram whole rock metallic screen/fire assay or standard 50 gram fire-assaying with AA or gravimetric finish at ALS Laboratories in Val dOr, Québec or Sudbury, Ontario. The 1 kilogram metallic screen assay method is selected by the geologist when samples contain coarse gold or present a higher percentage of pyrite than surrounding intervals. All samples are also analyzed for multi-elements, including silver, using an Aqua Regia-ICP-AES method at ALS laboratories. Drill program design, Quality Assurance/Quality Control and interpretation of results is performed by qualified persons employing a Quality Assurance/Quality Control program consistent with NI 43-101 and industry best practices. Standards and blanks are included with every 20 samples for Quality Assurance/Quality Control purposes by the Corporation as well as the lab. Approximately 5% of sample pulps are sent to secondary laboratories for check assays.

About the Windfall Lake Gold Deposit
The Windfall Lake gold deposit is located between Val-dOr and Chibougamau in the Abitibi region of Québec, Canada. The current mineral resource comprises 2,762,000 tonnes at 8.42 g/t Au (748,000 ounces) in the indicated category and 3,512,000 tonnes at 7.62 g/t Au (860,000 ounces) in the inferred category (sourced from a technical report dated June 10, 2015 entitled “Preliminary Economic Assessment of the Windfall Lake Gold Property, Québec, Canada” with an effective date of April 28, 2015, prepared in accordance with NI 43-101). The Windfall Lake gold deposit is currently one of the highest grade resource-stage gold projects in Canada. The bulk of the mineralization occurs in the Main Zone, a southwest/northeast trending zone of stacked mineralized lenses, measuring approximately 600 metres wide and at least 1,400 metres long. The deposit is well defined from surface to a depth of 500 metres, and remains open along strike and at depth. Mineralization has been identified only 30 metres from surface in some areas and as deep as 870 metres in others, with significant potential to extend mineralization up and down-plunge and at depth.

About Osisko Mining Inc.
Osisko is a mineral exploration company focused on the acquisition, exploration, and development of precious metal resource properties in Canada. Osisko holds a 100% in the high-grade Windfall Lake gold deposit located between Val-dOr and Chibougamau in Québec and holds a 100% undivided interest in a large area of claims in the surrounding Urban Barry area (82,400 hectares), a 100% interest in the Marban project located in the heart of Québecs prolific Abitibi gold mining district, and properties in the Larder Lake Mining Division in northeast Ontario, including the Jonpol and Garrcon deposits on the Garrison property, the Buffonta past producing mine and the Gold Pike mine property. The Corporation also holds interests and options in a number of additional properties in northern Ontario.  Osisko continues to be well financed and has approximately $80 million in cash and cash equivalents as well as marketable securities of approximately $60 million.

Cautionary Note Regarding Forward-Looking Information
This news release contains “forward-looking information” within the meaning of the applicable Canadian securities legislation that is based on expectations, estimates, projections and interpretations as at the date of this news release. The information in this news release about the significant potential of the northeast area of the Windfall deposit; the significance of new results from the ongoing 150,000 metre drill program at the Windfall Lake gold deposit; a potential increase in the scale of the previously defined mineralized system; the Corporations commitment to doing more systematic drilling of the northeast area of the Windfall deposit; the importance of the recently expanded step-out drilling along fences northeast of the main deposit; the possible relation of a linear magnetic depression to a magnetite destructive silica-sericite alteration corridor associated with the intrusive system of the Windfall deposit; the ability of the high-resolution airborne magnetic survey to accurately identify the magnetic feature; the significance of the drill holes of the first three step-out lines and their ability to support managements view that the deposit is characteristic of the main Windfall deposit and continues along the extension program area; the mineralization and alteration of the three step-out lines being similar to known zones in the Windfall deposit; potential mineralization; the ability to realize upon any mineralization in a manner that is economic; the ability to complete any proposed exploration activities and the results of such activities; the continuity or extension of any mineralization; and any other information herein that is not a historical fact may be “forward-looking information”. Any statement that involves discussions with respect to predictions, expectations, interpretations, beliefs, plans, projections, objectives, assumptions, future events or performance (often but not always using phrases such as “expects”, or “does not expect”, “is expected”, “interpreted”, “managements view”, “anticipates” or “does not anticipate”,  “plans”, “budget”, “scheduled”, “forecasts”, “estimates”, “believes” or “intends” or variations of such words and phrases or stating that certain actions, events or results “may” or “could”, “would”, “might” or “will” be taken to occur or be achieved) are not statements of historical fact and may be forward-looking information and are intended to identify forward-looking information. This forward-looking information is based on reasonable assumptions and estimates of management of the Corporation, at the time it was made, involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of Osisko to be materially different from any future results, performance or achievements expressed or implied by such forward-looking information. Such factors include, among others, risks relating to the ability of exploration activities (including drill results) to accurately predict mineralization; errors in managements geological modelling; the ability of Osisko to complete further exploration activities, including drilling; property interests; the ability of the Corporation to obtain required approvals and complete transactions on terms announced; the results of exploration activities; risks relating to mining activities; the global economic climate; metal prices; dilution; environmental risks; and community and non-governmental actions. Although the forward-looking information contained in this news release is based upon what management believes, or believed at the time, to be reasonable assumptions, Osisko cannot assure shareholders and prospective purchasers of securities of the Corporation that actual results will be consistent with such forward-looking information, as there may be other factors that cause results not to be as anticipated, estimated or intended, and neither Osisko nor any other person assumes responsibility for the accuracy and completeness of any such forward-looking information. Osisko does not undertake, and assumes no obligation, to update or revise any such forward-looking statements or forward-looking information contained herein to reflect new events or circumstances, except as may be required by law.

For further information please contact:
John Burzynski, President and Chief Executive Officer
Telephone: (416) 363-8653

High Grade Intersection 600 Metres NE of Main Deposit

(Montréal, December 5, 2016).  Osisko Mining Inc. (OSK:TSX, “Osisko” or the “Corporation”) is pleased to announce new results from the ongoing 150,000 metre drill program at its 100% owned Windfall Lake gold project located in the Urban Township, Québec.  The recently commenced expansion program included step-out drilling along fences located 200, 400, 600 and 800 metres northeast of the main deposit. The program is testing a linear magnetic depression that is interpreted to be related to a magnetite destructive silica-sericite alteration corridor associated with the Windfall intrusive system.  The linear structure currently being investigated with the step out drilling is parallel to the Windfall deposit and extends for an additional 2600 metres northeast of the deposit.  The magnetic feature was identified in the high-resolution airborne magnetic survey conducted earlier in the year by Osisko.  

Initial drill holes have been completed on the first three step out lines extending 600 metres from the last known mineralized intercept in the main deposit.  The initial holes on all three lines have encountered mineralized zones characteristic of the main Windfall deposit, providing strong support for management’s view that the deposit continues along the extension program area.  Assays are pending from the drill holes on the 200 and 400 metre step out lines and for the lower half of the drill hole reported today.  The 800 metre step out fence will commence shortly.  Initial analytical results presented below are from DDH OSK-W-16-760, one of the first drill holes located on the 600 metre fence, which intersected 65.0 g/t Au over 5.7 metres (148 g/t Au over 5.7 metres uncut) at a vertical depth of 200 metres. The mineralization and alteration is very similar to known zones in the Windfall deposit, consisting of a strong dark silica breccia and flooding with pyrite stringers and abundant visible gold.

This new discovery provides support for the significant potential of the northeast area of the Windfall deposit which Osisko believes may, with data from more systematic drilling, lead to a measurable increase in the scale of the previously defined mineralized system.  The strong potential for further extensions of the deposit in the northeast trending magnetic depression is further corroborated by these new results, and will be a new focus of ongoing exploration drilling at Windfall.  Details of the new drill intercept are presented below.  Maps and sections showing the location of DDH OSK-W-16-760 are available at www.osiskomining.com. 

re	From (m)	To (m)	Interval (m)	Au (g/t) uncut	Au (g/t) cut to 100 g/t	Zone	Corridor
OSK-W-16-760	226.3	232.0	5.7	148	65.0	New	New
including	226.3	229.8	3.5	211	76.0	New	New
including	229.0	229.8	0.8	591	100	New	New

Full analytical results from the new drill holes are available at www.osiskomining.com.

Hole Number	Azimuth (°)	Dip (°)	Length (m)	UTM E	UTM N	Section
OSK-W-16-760	332.0	-65.0	In progress	453403	5434971	3544

Qualified Person
The scientific and technical content of this news release has been reviewed, prepared and approved by Mr. Jean-Philippe Desrochers, Ph.D., P.Geo. Senior Project Manager of the Windfall Lake gold project, who is a “Qualified Person” as defined by National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101”).

Quality Control
Additional drilling is planned for the immediate area which will enable the true width determination.  Assays are uncut except where indicated. All NQ core assays reported were obtained by either 1 kilogram whole rock metallic screen/fire assay or standard 50 gram fire-assaying with AA or gravimetric finish at ALS Laboratories in Val dOr, Québec or Sudbury, Ontario. The 1 kilogram metallic screen assay method is selected by the geologist when samples contain coarse gold or present a higher percentage of pyrite than surrounding intervals. All samples are also analyzed for multi-elements, including silver, using an Aqua Regia-ICP-AES method at ALS laboratories. Drill program design, Quality Assurance/Quality Control and interpretation of results is performed by qualified persons employing a Quality Assurance/Quality Control program consistent with NI 43-101 and industry best practices. Standards and blanks are included with every 20 samples for Quality Assurance/Quality Control purposes by the Corporation as well as the lab. Approximately 5% of sample pulps are sent to secondary laboratories for check assays.

About the Windfall Lake Gold Deposit
The Windfall Lake gold deposit is located between Val-dOr and Chibougamau in the Abitibi region of Québec, Canada. The current mineral resource comprises 2,762,000 tonnes at 8.42 g/t Au (748,000 ounces) in the indicated category and 3,512,000 tonnes at 7.62 g/t Au (860,000 ounces) in the inferred category (sourced from a technical report dated June 10, 2015 entitled “Preliminary Economic Assessment of the Windfall Lake Gold Property, Québec, Canada” with an effective date of April 28, 2015, prepared in accordance with NI 43-101). The Windfall Lake gold deposit is currently one of the highest grade resource-stage gold projects in Canada. The bulk of the mineralization occurs in the Main Zone, a southwest/northeast trending zone of stacked mineralized lenses, measuring approximately 600 metres wide and at least 1,400 metres long. The deposit is well defined from surface to a depth of 500 metres, and remains open along strike and at depth. Mineralization has been identified only 30 metres from surface in some areas and as deep as 870 metres in others, with significant potential to extend mineralization up and down-plunge and at depth.

About Osisko Mining Inc.
Osisko is a mineral exploration company focused on the acquisition, exploration, and development of precious metal resource properties in Canada. Osisko holds a 100% in the high-grade Windfall Lake gold deposit located between Val-dOr and Chibougamau in Québec and holds a 100% undivided interest in a large area of claims in the surrounding Urban Barry area (82,400 hectares), a 100% interest in the Marban project located in the heart of Québecs prolific Abitibi gold mining district, and properties in the Larder Lake Mining Division in northeast Ontario, including the Jonpol and Garrcon deposits on the Garrison property, the Buffonta past producing mine and the Gold Pike mine property. The Corporation also holds interests and options in a number of additional properties in northern Ontario.  Osisko continues to be well financed and has approximately $80 million in cash and cash equivalents as well as marketable securities of approximately $60 million.

Cautionary Note Regarding Forward-Looking Information
This news release contains “forward-looking information” within the meaning of the applicable Canadian securities legislation that is based on expectations, estimates, projections and interpretations as at the date of this news release. The information in this news release about the significant potential of the northeast area of the Windfall deposit; the significance of new results from the ongoing 150,000 metre drill program at the Windfall Lake gold deposit; a potential increase in the scale of the previously defined mineralized system; the Corporations commitment to doing more systematic drilling of the northeast area of the Windfall deposit; the importance of the recently expanded step-out drilling along fences northeast of the main deposit; the possible relation of a linear magnetic depression to a magnetite destructive silica-sericite alteration corridor associated with the intrusive system of the Windfall deposit; the ability of the high-resolution airborne magnetic survey to accurately identify the magnetic feature; the significance of the drill holes of the first three step-out lines and their ability to support managements view that the deposit is characteristic of the main Windfall deposit and continues along the extension program area; the mineralization and alteration of the three step-out lines being similar to known zones in the Windfall deposit; potential mineralization; the ability to realize upon any mineralization in a manner that is economic; the ability to complete any proposed exploration activities and the results of such activities; the continuity or extension of any mineralization; and any other information herein that is not a historical fact may be “forward-looking information”. Any statement that involves discussions with respect to predictions, expectations, interpretations, beliefs, plans, projections, objectives, assumptions, future events or performance (often but not always using phrases such as “expects”, or “does not expect”, “is expected”, “interpreted”, “managements view”, “anticipates” or “does not anticipate”,  “plans”, “budget”, “scheduled”, “forecasts”, “estimates”, “believes” or “intends” or variations of such words and phrases or stating that certain actions, events or results “may” or “could”, “would”, “might” or “will” be taken to occur or be achieved) are not statements of historical fact and may be forward-looking information and are intended to identify forward-looking information. This forward-looking information is based on reasonable assumptions and estimates of management of the Corporation, at the time it was made, involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of Osisko to be materially different from any future results, performance or achievements expressed or implied by such forward-looking information. Such factors include, among others, risks relating to the ability of exploration activities (including drill results) to accurately predict mineralization; errors in managements geological modelling; the ability of Osisko to complete further exploration activities, including drilling; property interests; the ability of the Corporation to obtain required approvals and complete transactions on terms announced; the results of exploration activities; risks relating to mining activities; the global economic climate; metal prices; dilution; environmental risks; and community and non-governmental actions. Although the forward-looking information contained in this news release is based upon what management believes, or believed at the time, to be reasonable assumptions, Osisko cannot assure shareholders and prospective purchasers of securities of the Corporation that actual results will be consistent with such forward-looking information, as there may be other factors that cause results not to be as anticipated, estimated or intended, and neither Osisko nor any other person assumes responsibility for the accuracy and completeness of any such forward-looking information. Osisko does not undertake, and assumes no obligation, to update or revise any such forward-looking statements or forward-looking information contained herein to reflect new events or circumstances, except as may be required by law.

For further information please contact:
John Burzynski, President and Chief Executive Officer
Telephone: (416) 363-8653

(Montréal, October 25, 2016). Osisko Mining Inc. (OSK:TSX, “Osisko” or the “Corporation”) is pleased to announce further new results from the ongoing 150,000 metre drill program at its 100% owned Windfall Lake gold project located in the Urban Township, Québec. The current drill program combines definition drilling above the Red Dog intrusion (“Red Dog”), expansion drilling above and below Red Dog and exploration drilling on the greater deposit and overall property area. Seven drills are currently on site, and an additional four drills are planned to be added to the program in the coming weeks. A total of seven new holes are reported in this release.

Significant new results include: 25.1 g/t Au over 2.0 metres and 15.5 g/t Au over 2.9 metres in DDH OSK-W-16-704-W1; and 13.0 g/t Au over 2.0 metres in DDH OSK-W-16-311-W2. The new results continue to demonstrate the continuity and high potential for significant new gold mineralization below Red Dog.? Details of the new results are outlined in the table below.

Hole No.	From (m)	To (m)	Interval (m)	Au (g/t)	Zone	Corridor
OSK-W-16-704-W1	649.6	652.5	2.9	15.5	FW3	Underdog
including	649.6	650.3	0.7	63.6
	671.2	677.5	6.3	6.10	New	Underdog
including	671.2	671.7	0.5	59.3
	797.0	799.0	2.0	25.1	FW4	Underdog
including	797.5	798.1	0.6	50.5
OSK-W-16-706-W2	1203.2	1205.2	2.0	7.33	New	Underdog
OSK-W-16-311-W1	927.5	930.5	3.0	9.40	FW3 HW	Underdog
OSK-W-16-311-W2	918.8	921.0	2.0	13.0	FW3 HW	Underdog
including	919.3	919.6	0.3	88.30
	970.0	972.0	2.0	6.44	FW3 HW	Underdog
	992.5	994.9	2.4	6.55	FW3	Underdog
including	993.3	993.9	0.6	24.7
	1050.7	1053.4	2.7	7.87	FW3 FW	Underdog
including	1052.4	1053.4	1.0	20.9

Notes:

(1) For complete drilling results please see www.osiskomining.com
(2) True Widths are estimated at 65 – 80% of the reported core length interval.? See “Quality Control” below.

Drill Hole Collar Coordinates and Information

Hole Number	Azimuth (°)	Dip (°)	Length (m)	UTM E	UTM N	Section
OSK-W-16-704-ext	327.0	-55.9	409.5	452311	5434627	2425
OSK-W-16-704-W1	328.7	-57.0	853.5	452311	5434629	2425
OSK-W-16-706-W2	329.6	-58.4	1297.5	452610	5434420	2525
OSK-W-16-311-W1	330.3	-62.4	1155	452311	5434424	2325
OSK-W-16-311-W2	330.3	-62.4	1181	452311	5434424	2325
OSK-W-16-726-W1	328.2	-59.5	1107.5	451895	5434186	1850
OSK-W-16-726-W2	328.2	-59.5	565.5	451895	5434186	1850

DDH OSK-W-16-704 ext was extended to test the FW3 Zone immediately below Red Dog. The FW3 Zone was intersected with 3-10% pyrite stringers and disseminations in a moderately sericitized volcanic rock unit, containing only weak gold mineralization.

DDH OSK-W-16-704-W1 intersected the FW3 Zone returning 15.5 g/t Au over 2.9 meters in a porphyry dyke containing 15-20% pyrite stringers and disseminations. This intercept is located 105 metres above DDH EAG-12-421 which returned 4.04 g/t Au over 2.2 metres (previously reported). Another zone was intersected 20 meters to the NW of the FW3 Zone which returned 6.1 g/t Au over 6.3 meters. Gold mineralization is hosted in a sericitized and silicified porphyry dyke containing 3-5% pyrite stringers and disseminations with traces of chalcopyrite. ?The FW4 zone returned 25.1 g/t Au over 2.0 meters in a sparsely drilled sector in the footwall of FW3 Zone. Gold mineralization is hosted in a strongly silicified and sericitized porphyry dyke containing 3-10% pyrite stringers and disseminations with traces of chalcopyrite and specks of visible gold.

DDH OSK-W-16-706-W2 tested the Underdog FW1 and FW3 Zones. Gold mineralization was intersected in the hanging wall of the FW3 Zone, returning 3.06 g/t Au over 4.5 metres in a silicified porphyry dyke containing 1-5% pyrite stringers and disseminations. The FW3 Zone returned 4.95 g/t Au over 3.5 metres at the contact of a silicified porphyry dyke containing 1-2% pyrite stringers and disseminations with several specks of visible gold. A new zone was also intersected in the footwall of the FW3, returning 7.33 g/t Au over 2.0 metres near a strongly silicified porphyry dyke contact containing 3-8% pyrite stringers and disseminations.

DDH OSK-W-16-311-W1 and DDH OSK-W-16-311-W2 expanded gold mineralization in a new zone for 135 metres along strike with intervals returning 9.40 g/t Au over 3.0 metres and 13.0 g/t Au over 2.0 metres respectively. These intervals correlate with previously a reported intercept in DDH OBM-16-655 of 10.2 g/t Au over 4.5 metres and confirm the potential for new gold zones below Red Dog. The two intervals are located in a silicified and sericitized porphyry dyke containing 2-5% pyrite stringers and disseminations with specks of visible gold. The FW3 Zone returned 6.55 g/t Au over 2.4 metres in a strongly silicified porphyry dyke containing up to 20% pyrite stringers and disseminations. An interval was also intersected 20 metres to the NW of FW3 which returned 7.87 g/t Au over 2.7 metres in a strongly sericitized porphyry dyke containing 1-2% pyrite.

DDH OSK-W-16-726-W1 tested the FW3 Zone in the western part of the deposit and 70 metres down-plunge from previously reported DDH NOT-07-110 which returned 12.3 g/t Au over 5.0 metres. The hole intersected the weakly altered favourable porphyry dykes and did not return any significant results.

DDH OSK-W-16-726-W2 was abandoned before intersecting the FW3 Zone and no significant results were reported.

Full analytical results from the seven new drill holes are available at www.osiskomining.com.

Qualified Person
The scientific and technical content of this press release has been reviewed, prepared and approved by Mr. Jean-Philippe Desrochers, Ph.D., P.Geo. Senior Project Manager of the Windfall Lake gold project, who is a “Qualified Person” as defined by National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101”).

Quality Control
True widths of the new exploration intercepts reported in this press release have yet to be determined. Additional drilling is planned for the immediate area which will enable the true width determination. Assays are uncut except where indicated. All NQ core assays reported were obtained by either 1 kg whole rock metallic screen/fire assay or standard 50 gram fire-assaying with AA or gravimetric finish at ALS Laboratories in Val dOr, Québec or Sudbury, Ontario. The 1 kg metallic screen assay method is selected by the geologist when samples contain coarse gold or present a higher percentage of pyrite than surrounding intervals. All samples are also analysed for multi-elements, including silver, using an Aqua Regia-ICP-AES method at ALS laboratories. Drill program design, Quality Assurance/Quality Control and interpretation of results is performed by qualified persons employing a QA/QC program consistent with NI 43-101 and industry best practices. Standards and blanks are included with every 20 samples for QA/QC purposes by the Corporation as well as the lab. Approximately 5% of sample pulps are sent to secondary laboratories for check assays.

About the Windfall Lake Gold Deposit
The Windfall Lake gold deposit is located between Val-dOr and Chibougamau in the Abitibi region of Québec, Canada. The current mineral resource comprises 2,762,000 tonnes at 8.42 g/t Au (748,000 ounces) in the indicated category and 3,512,000 tonnes at 7.62 g/t Au (860,000 ounces) in the inferred category (sourced from a technical report dated June 10, 2015 entitled “Preliminary Economic Assessment of the Windfall Lake Gold Property, Québec, Canada” with an effective date of April 28, 2015, prepared in accordance with NI 43-101). The Windfall Lake gold deposit is currently one of the highest grade resource-stage gold projects in Canada. The bulk of the mineralization occurs in the Main Zone, a southwest/northeast trending zone of stacked mineralized lenses, measuring approximately 600 metres wide and at least 1,400 metres long. The deposit is well defined from surface to a depth of 500 metres, and remains open along strike and at depth. Mineralization has been identified only 30 metres from surface in some areas and as deep as 870 metres in others, with significant potential to extend mineralization up and down-plunge and at depth.

About Osisko Mining Inc.
Osisko is a mineral exploration company focused on the acquisition, exploration, and development of precious metal resource properties in Canada. Osisko holds a 100% in the high-grade Windfall Lake gold deposit located between Val-dOr and Chibougamau in Québec and holds a 100% undivided interest in a large area of claims in the surrounding Urban Barry area (82,400 hectares), a 100% interest in the Marban project located in the heart of Québecs prolific Abitibi gold mining district, and properties in the Larder Lake Mining Division in northeast Ontario, including the Jonpol and Garrcon deposits on the Garrison property, the Buffonta past producing mine and the Gold Pike mine property. The Corporation also holds interests and options in a number of additional properties in northern Ontario.? Osisko continues to be well financed and has approximately $80 million in cash and cash equivalents as well as marketable securities of approximately $60 million.

Cautionary Note Regarding Forward-Looking Information
This news release contains “forward-looking information” within the meaning of the applicable Canadian securities legislation that is based on expectations, estimates and projections as at the date of this news release. The information in this news release about potential mineralization; the ability to realize upon any mineralization in a manner that is economic; the ability to complete any proposed exploration activities and the results of such activities; the continuity or extension of any mineralization; and any other information herein that is not a historical fact may be “forward-looking information”. Any statement that involves discussions with respect to predictions, expectations, beliefs, plans, projections, objectives, assumptions, future events or performance (often but not always using phrases such as “expects”, or “does not expect”, “is expected”, “anticipates” or “does not anticipate”, “plans”, “budget”, “scheduled”, “forecasts”, “estimates”, “believes” or “intends” or variations of such words and phrases or stating that certain actions, events or results “may” or “could”, “would”, “might” or “will” be taken to occur or be achieved) are not statements of historical fact and may be forward-looking information and are intended to identify forward-looking information. This forward-looking information is based on reasonable assumptions and estimates of management of Osisko, but involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of Osisko to be materially different from any assumed or estimated future results, performance or achievements expressed or implied by such forward-looking information. Such factors, among others, include: risks relating to property interests; our ability to obtain required approvals, complete definitive documentation and complete transactions on the terms announced; the ability of Osisko to complete further exploration activities, including drilling; the results of exploration activities; the ability of exploration results to accurately predict mineralization; risks relating to mining activities; the global economic climate; metal prices; dilution; environmental risks; and community and non-governmental actions. Although the forward-looking information contained in this news release is based upon what management believes, or believed at the time, to be reasonable assumptions and/or estimates, Osisko cannot assure shareholders and prospective purchasers of securities of the Corporation that actual results will be consistent with such forward-looking information, as there may be other factors that cause results not to be as anticipated, estimated or intended, and neither Osisko nor any other person assumes responsibility for the accuracy and completeness of any such forward-looking information. Osisko does not undertake, and assumes no obligation, to update or revise any such forward-looking statements or forward-looking information contained herein to reflect new events or circumstances, except as may be required by law.

For further information please contact:

John Burzynski
President and Chief Executive Officer
Telephone: (416) 363-8653

(Montréal, October 12, 2016)  Osisko Mining Inc. (OSK:TSX, “Osisko” or the “Corporation”) is pleased to announce new results from the ongoing drill program at its 100% owned Windfall Lake gold project located in the Urban Township, Québec. The current 150,000 metre drill program combines definition drilling above the Red Dog intrusion (“Red Dog”), expansion drilling above and below Red Dog and exploration drilling on the greater deposit and overall property area. 

Significant new results include:  34.4 g/t Au over 5.7 metres (uncut) in DDH OSK-W-16-720;  13.8 g/t Au over 6.6 metres in DDH OSK-W-16-708-W2; 7.57 g/t Au over 7.70 metres in DDH OSK-W-16-706-W3; 11.8 g/t Au over 4.6 metres in DDH OSK-W-16-309-W3; and 9.45 g/t Au over 2.1 metres in DDH OSK-W-16-727.

The new results demonstrate the continuity of the gold mineralization and the high potential for significant new mineralization near the known Windfall mineral inventory through continued definition and exploratory drilling, specifically in the eastern extension of the deposit and below the Red Dog intrusion.  Six drills are currently active on site, and an additional four drills will be added to the program in the coming weeks.  A total of seven new drill holes are reported in this release, and with significant results presented in the table below.

Hole	From (m)	To (m)	Interval (m)	Au (g/t)	Zone	Corridor
OSK-W-16-720	260	265.7	5.7	34.4 (uncut)	Caribou	Caribou
	260	265.7	5.7	20.9      (cut)
including	262	262.5	0.5	45.9
and	263.1	263.6	0.5	105
and	264.3	264.6	0.3	348
OSK-W-16-720	394	398.4	4.4	5.56	Caribou	Caribou
including	394	394.5	0.5	18.7
OSK-W-16-724	576.7	580	3.3	5.06	CN2 Zone Extension	Caribou
including	579.7	580	0.3	26.7
OSK-W-16-727	274.4	276.5	2.1	9.45	FW3	Underdog
including	274.9	276	1.1	17.2
OSK-W-16-706-W3	944.8	952.5	7.7	7.57	FW1	Underdog
including	944.8	945.9	1.1	9.15
and	949	950.1	1.1	30.0
OSK-W-16-708-W2	668.8	671	2.2	7.43	Shear	Caribou
including	668.8	670.2	1.4	11.4
OSK-W-16-708-W2	795.00	798.00	3.0	7.66	Caribou	Caribou
OSK-W-16-708-W2	841.9	844.7	2.8	4.47	Wolf	Caribou
including	844.3	844.7	0.4	30.3
OSK-W-16-708-W2	1135.5	1142.1	6.6	13.8	New Zone	Underdog
including	1136.1	1138.5	2.4	36.1
OSK-W-16-309-W3	474	476.2	2.2	7.63	New Zone	Caribou
OSK-W-16-309-W3	480.4	482.5	2.1	6.32	New Zone	Caribou
including	481.3	482	0.7	17.3
OSK-W-16-309-W3	539.2	543.8	4.6	11.8	New Zone	Caribou
including	542	543	1.0	47.9

Notes:
(1) For complete drilling results please see www.osiskomining.com.
(2) True widths are estimated at 65-80% of the reported core length interval. See “Quality Control” below.
(3) High grade values cut to 100 g/t Au

Drill Hole Collar Coordinates

Hole Number	Azimuth (°)	Dip (°)	Length (m)	UTM E	UTM N	Section
OSK-W-16-309-W3	325.8	-63.2	1174	452548	5434514	2575
OSK-W-16-706-W3	329.6	-58.4	970.5	452610	5434420	2575
OSK-W-16-708-W2	331.0	-54.0	1408.5	452817	5434427	2775
OSK-W-16-720	332.0	-56.0	460.5	452665	5434718	2775
OSK-W-16-724	329.3	-65.0	823.5	452909	5434853	3050
OSK-W-16-726	328.2	-59.5	997.5	451895.1	5434186.2	1850
OSK-W-16-727	330.2	-52.5	382.5	451663	5434448	1775

DDH OSK-W-16-720 confirms the NE extension of the Caribou corridor with 34.4 g/t Au over 5.7 metres (20.9 g/t Au over 5.7 metres cut to 100 g/t).  This new portion of the Caribou Zone was first intersected with DDH OSK-16-642 (10.0 g/t Au over 2.6 metres, Osisko press release dated May 12, 2016) located 75 metres down-plunge to the ENE.  This new extension remains open in its down-plunge and down-dip extensions and is a further illustration of the good potential to discover additional gold zones in the proximity of known zones.

DDH OSK-W-16-724 tested the down-plunge extension of gold mineralization 150 metres to the ENE of known zones.  The hole intersected 5.06 g/t Au over 3.3 metres in the down-plunge extension of the Caribou N2 Zone.  Gold mineralization is hosted in an altered porphyry dyke containing 3-15% pyrite stringers and disseminations.  This intercept shows the gold mineralization in the Caribou Corridor extends for more than 800 metres laterally and confirms the Main Zone is open in its down-plunge extension.

DDH OSK-W-16-726 tested the Underdog Corridor in the western extension of the deposit.  The hole intersected a new zone located 70 metres to the NW of FW3 Zone returning 4.50 g/t Au over 2.2 metres.

DDH OSK-W-16-727 also tested the Underdog Corridor in the western extension of the deposit.  The hole intersected the FW3 Zone returning 9.45 g/t Au over 2.1 metres, located 140 metres in the down-plunge extension of DDH OSK-16-616 (previously reported, 18.9 g/t Au over 2.8 metres). The mineralization is hosted in a strongly silicified porphyry dyke containing 2-20% pyrite stringers and disseminations.

DDH OSK-W-16-706-W3 intersected 7.57 g/t Au over 7.7 metres and expanded the FW1 Zone in the Underdog Corridor by 35 metres along its down-dip extension.  The hole also correlates with DDH OSK-16-706 (previously reported, 12.3 g/t Au over 2.3 metres) located 80 metres to the northeast.  The gold mineralization is hosted in a fragmental felsic porphyry dyke containing 2-15% pyrite stringers and disseminations with traces of chalcopyrite.

DDH OSK-W-16-708-W2 discovered a new zone in the Underdog Corridor returning 13.8 g/t Au over 6.6 metres.  This zone is hosted in a strongly altered volcanic rock unit containing 5-7% pyrite stringers and traces chalcopyrite.  The hole also intersected the down-dip extension of the Wolf Zone, returning 4.47 g/t Au over 2.8 metres and expanded a known zone in the Caribou Corridor by another 22 metres down-dip with an interval returning 7.66 g/t Au over 3.0 metres.

DDH OSK-W-16-309-W3 intersected a new zone located 17 metres in the footwall of the Caribou North 1 Zone, returning 11.8 g/t Au over 4.6 metres.  This correlates with DDH EAG-13-320-W2, located 62 metres to the SW (previously reported, 4.9 g/t Au over 3.15 metres).  The hole intersected additional gold mineralization in the hanging wall of the Caribou North 1 Zone returning 7.63 g/t Au over 2.2 metres and 6.32 g/t Au over 2.1 metres.  Both intervals are related to a felsic porphyry dyke.

Qualified Person
The scientific and technical content of this press release has been reviewed, prepared and approved by Mr. Jean-Philippe Desrochers, Ph.D., P.Geo. Senior Project Manager of the Windfall Lake gold project, who is a “Qualified Person” as defined by National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101”).

Quality Control
True widths of the new exploration intercepts reported in this press release have yet to be determined. Additional drilling is planned for the immediate area which will enable the true width determination. Assays are uncut except where indicated. All NQ core assays reported were obtained by either 1 kg whole rock metallic screen/fire assay or standard 50 gram fire-assaying with AA or gravimetric finish at ALS Laboratories in Val dOr, Québec or Sudbury, Ontario. The 1 kg metallic screen assay method is selected by the geologist when samples contain coarse gold or present a higher percentage of pyrite than surrounding intervals. All samples are also analysed for multi-elements, including silver, using an Aqua Regia-ICP-AES method at ALS laboratories. Drill program design, Quality Assurance/Quality Control and interpretation of results is performed by qualified persons employing a QA/QC program consistent with NI 43-101 and industry best practices. Standards and blanks are included with every 20 samples for QA/QC purposes by the Corporation as well as the lab. Approximately 5% of sample pulps are sent to secondary laboratories for check assays.

About the Windfall Lake Gold Deposit
The Windfall Lake gold deposit is located between Val-dOr and Chibougamau in the Abitibi region of Québec, Canada. The current mineral resource comprises 2,762,000 tonnes at 8.42 g/t Au (748,000 ounces) in the indicated category and 3,512,000 tonnes at 7.62 g/t Au (860,000 ounces) in the inferred category (sourced from a technical report dated June 10, 2015 entitled “Preliminary Economic Assessment of the Windfall Lake Gold Property, Québec, Canada” with an effective date of April 28, 2015, prepared in accordance with NI 43-101). The Windfall Lake gold deposit is currently one of the highest grade resource-stage gold projects in Canada. The bulk of the mineralization occurs in the Main Zone, a southwest/northeast trending zone of stacked mineralized lenses, measuring approximately 600 metres wide and at least 1,400 metres long. The deposit is well defined from surface to a depth of 500 metres, and remains open along strike and at depth. Mineralization has been identified only 30 metres from surface in some areas and as deep as 870 metres in others, with significant potential to extend mineralization up and down-plunge and at depth.

About Osisko Mining Inc.
Osisko is a mineral exploration company focused on the acquisition, exploration, and development of precious metal resource properties in Canada. Osisko holds a 100% in the high-grade Windfall Lake gold deposit located between Val-dOr and Chibougamau in Québec and holds a 100% undivided interest in a large area of claims in the surrounding Urban Barry area (82,400 hectares), a 100% interest in the Marban project located in the heart of Québecs prolific Abitibi gold mining district, and properties in the Larder Lake Mining Division in northeast Ontario, including the Jonpol and Garrcon deposits on the Garrison property, the Buffonta past producing mine and the Gold Pike mine property. The Corporation also holds interests and options in a number of additional properties in northern Ontario. Osisko continues to be well financed and has approximately $80 million in cash and cash equivalents as well as marketable securities of approximately $60 million.

Cautionary Note Regarding Forward-Looking Information
This news release contains “forward-looking information” within the meaning of the applicable Canadian securities legislation that is based on expectations, estimates and projections as at the date of this news release. The information in this news release about potential mineralization; the expansion of the drill program; the potential for the Windfall project; the ability to add an additional four drills to the program; that new drill results may demonstrate continuity in the gold mineralization; the potential for new mineralization near the known Windfall mineral inventory; the ability of continued definition and exploratory drilling to identify mineralization; the ability to realize upon any mineralization in a manner that is economic; the ability to complete any proposed exploration activities and the results of such activities; the continuity or extension of any mineralization; and any other information herein that is not a historical fact may be “forward-looking information”. Any statement that involves discussions with respect to predictions, expectations, beliefs, plans, projections, objectives, assumptions, future events or performance (often but not always using phrases such as “expects”, or “does not expect”, “is expected”, “anticipates” or “does not anticipate”, “plans”, “budget”, “scheduled”, “forecasts”, “estimates”, “believes” or “intends” or variations of such words and phrases or stating that certain actions, events or results “may” or “could”, “would”, “might” or “will” be taken to occur or be achieved) are not statements of historical fact and may be forward-looking information and are intended to identify forward-looking information. This forward-looking information is based on reasonable assumptions and estimates of management of Osisko, at the time it was made, involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of Osisko to be materially different from any future results, performance or achievements expressed or implied by such forward-looking information. Such factors include, among others, risks relating to property interests; our ability to obtain required approvals;, the ability of Osisko to complete further exploration activities, including drilling; the results of exploration activities; the ability of exploration results to accurately predict mineralization; risks relating to mining activities; the global economic climate; metal prices; dilution; environmental risks; and community and non-governmental actions. Although the forward-looking information contained in this news release is based upon what management believes, or believed at the time, to be reasonable assumptions, Osisko cannot assure shareholders and prospective purchasers that actual results will be consistent with such forward-looking information, as there may be other factors that cause results not to be as anticipated, estimated or intended, and neither Osisko nor any other person assumes responsibility for the accuracy and completeness of any such forward-looking information. Osisko does not undertake, and assumes no obligation, to update or revise any such forward-looking statements or forward-looking information contained herein to reflect new events or circumstances, except as may be required by law.

For further information please contact:
John Burzynski
President and Chief Executive Officer
Telephone: (416) 363-8653

Caribou Zone Mineralized Corridor Extended by 230 metres to ENE
15.9 g/t Au over 8.9 Metres in FW3 Zone Extension at Depth
8.5 g/t Au over 4.7 Metres in New Wolf 2 Zone
28.1 g/t Au over 2.5 Metres in New FW0 Zone

(Montréal, September 19, 2016). Osisko Mining Inc. (OSK:TSX, “Osisko” or the “Corporation”) is pleased to announce new results from the ongoing drill program at its 100% owned Windfall Lake gold project located in Urban Township, Québec. The current drill program is being expanded to 150,000 metres, and combines definition drilling above the Red Dog intrusion (“Red Dog”), expansion drilling above and below Red Dog and exploration drilling on the greater deposit and overall property area. Six drills are currently on site, and an additional four drills will be added to the program in the coming months. A total of 5 new drill holes are reported in this release, and are presented in greater detail in the table below.

Significant new results include:  391 g/t Au over 3.1 metres (uncut) in DDH OSK-W-16-728 (14.7 g/t Au over 3.1 metres cut);  15.9 g/t Au over 8.9 metres in DDH OSK-W-16-706-W1; 10.6 g/t Au over 10.9 metres in DDH OSK-W-16-706-W1; and 5.75 g/t Au over 16.5 metres in DDH OSK-W-16-706-W1.

The new results demonstrate the high potential for significant new mineralization near the known Windfall mineral inventory through continued definition and exploratory drilling, specifically in the eastern extension of the deposit and below the Red Dog intrusion.

The main mineralized zones are hosted within three broad corridors of mineralization trending WSW – ENE. Moving south to north across the Windfall deposit these three corridors are:

• the Caribou Corridor (includes the Caribou Zone, Wolf Zone and the new “Wolf 2” Zone);
   
• the Zone 27 Corridor; and
   
• the “Underdog” Corridor (newly renamed, previously known as the FW series corridor) hosting all zones below the Red Dog dike and includes the newly reported “FW0” Zone; FW1 Zone; FW2 Zone; FW3 Zone; and FW4 Zone).

The primary corridors of mineralization are depicted in diagrams available on Osiskos website at www.osiskomining.com.

Highlights of Current Results

• Caribou Zone mineralized corridor has been extended by 230 metres farther than previously known to the ENE;  the partial results from hole DDH OSK-W-16-728 indicate the main deposit continues to host strong mineralization with a new high-grade intercept in Caribou Corridor; results for Zone 27 Corridor and Underdog Corridor are pending
   
• FW3 Zone expanded 50 metres down dip; new “FW0 Zone” defined in Underdog Corridor; new “Wolf 2 Zone” defined in Caribou Corridor
   
• Drill program expanded to 150,000 metres, current 6 drill rigs increasing to 10;  aggressive 200 metre, 400 metre and 600 metre step out drilling from eastern limit of known mineralization is planned to pursue the main deposit to the ENE

Details of significant new results are outlined in the table below:

Hole	From (m)	To (m)	Interval	Au	Zone	Corridor
			(m)	(g/t)
OSK-W-16-309-W2	972	975	3.0	5.58	New	Underdog
OSK-W-16-706-W1	546.5	563	16.5	5.75	Caribou South 1	Caribou
Including	549.2	549.5	0.3	222	Caribou South 1	Caribou
cut to 100 g/t Au	546.5	563	16.5	3.53	Caribou South 1	Caribou
OSK-W-16-706-W1	818.8	821.3	2.5	28.1	FW0	Underdog
OSK-W-16-706-W1	981.1	992	10.9	10.6	FW2
Including	981.9	983.7	1.8	24.0		Underdog
including	988.50	992.00	3.5	19.4
OSK-W-16-706-W1	1007.00	1012.00	5.0	7.1	FW2	Underdog
including	1008.00	1010.00	2.0	13.8
OSK-W-16-706-W1	1022.0	1024.3	2.3	18.6	FW2	Underdog
including	1022.9	1023.7	0.8	49.9
OSK-W-16-706-W1	1033	1041.9	8.9	15.9(3)	FW3
including	1033.5	1034.3	0.8	93.6		Underdog
including	1041	1041.4	0.4	117
OSK-W-16-706-W1	1073.1	1077	3.9	8.74	FW4	Underdog
OSK-W-16-718	570.5	575.2	4.7	8.50	Wolf 2	Caribou
OSK-W-16-718	735.3	737.9	2.6	4.78	Wolf	Caribou
OSK-W-16-722	53.00	55.00	2.0	6.08	New	New
including	53.00	54.00	1.0	12.0
OSK-W-16-728	478.1	481.2	3.1	391	Caribou	Caribou
Including	478.1	478.5	0.4	3020	Caribou	Caribou
cut to 100 g/t Au	478.1	481.2	3.1	14.7(3)	Caribou	Caribou

Notes:
(1) For complete drilling results please see www.osiskomining.com.
(2) True widths are estimated at 65-80% of the reported core length interval. See “Quality Control” below.
(3) High grade values cut to 100 g/t Au

Drill Hole Collar Coordinates and Information:

Hole Number	Azimuth (°)	Dip (°)	Length (m)	UTM E	UTM N	Section
OSK-W-16-309-W2	325.8	-63.2	1111.0	452548	5434514	2575
OSK-W-16-706-W1	329.6	-58.4	1276.5	452610	5434420	2525
OSK-W-16-718	332.1	-60.5	799.5	452742	5434575	2775
OSK-W-16-722	330	-60	774.8	452795	5434813	2925
OSK-W-16-728	330.8	-65.2	1460	453054	5434890	3200

President and Chief Executive Officer John Burzynski noted:  “In recent weeks, our corporate and exploration focus has turned solidly to the Windfall project. Results coming from the current drill program have centered our attention on the growing potential for Windfall to be our “company maker” deposit. We are increasing the scale of our drill program for the second time in the past 3 months, and are planning on adding another four drills and 50,000 metres of drilling. The exploration team is having increasing success at intersecting new extensions of the currently known zones, and have also successfully begun to define new parallel mineralized zones like the recently announced Wolf Zone within the primary mineralized corridors. All indications at this point are leading us to believe that we will continue to expand the main deposit as we advance drilling, particularly to the ENE and at depth. The results outlined in todays press release define significant extensions and additions to the main mineralization at Windfall, and have added a new emphasis on exploring the main deposit to follow the currently known mineralized corridors in the ENE direction to try to find the center of gravity of the deposit.”

DDH OSK-W-16-309-W2 intersected 5.58 g/t Au over 3.0 meters, 60 metres to the northwest of FW3. This new intercept correlates with 4.3 g/t Au over 2.1 metres in previously reported hole EAG-13-320-W1 located 60 metres below.

DDH OSK-W-16-706-W1 confirmed a new zone (“FW0 Zone”) located 50 metres to the SE of FW1 with an intercept of 28.1 g/t Au over 2.5 metres in an altered porphyry dyke with 1% pyrite stringers. The FW0 Zone is currently modelled for over 300 metres along strike and 100 metres vertical, and remains open along strike and at depth. The previously reported intercepts interpreted to be part of the FW0 Zone include 11.2 g/t Au over 3.4 metres in DDH OBM-16-614, 7.49 g/t Au over 7.0 metres in DDH OBM-15-564, and 12.5 g/t Au over 2.0 metres in OBM-15-560.

Three additional zones currently interpreted to represent elements of the FW2 Zone were intersected between FW1 and FW3, respectively returning: 10.6 g/t Au over 10.9 metres (hosted in a strongly silicified porphyry dyke containing 2-5% pyrite stringers with traces of sphalerite and specks of visible gold);  7.1 g/t Au over 5.0 metres and 18.6 g/t Au over 2.3 metres (both hosted in a porphyry dyke containing 2-3% pyrite stringers and traces of chalcopyrite).

This hole also expanded the FW3 Zone by 50 metres down dip, returning 15.9 g/t Au over 8.9 metres hosted in a porphyry dyke containing 2-3% pyrite stringers with traces of chalcopyrite and several specks of visible gold.

Additionally, the hole intersected gold mineralization below FW3 (currently interpreted as FW4 Zone), returning 8.74 g/t Au over 3.9 metres.

DDH OSK-W-16-718 extended the newly discovered Wolf Zone by 26 metres vertically with an intercept of 4.78 g/t Au over 2.6 metres located above previously reported DDH OBM-15-559 which returned 7.0 g/t Au over 10.0 metres. This drill hole also confirmed a new zone (“Wolf 2 Zone”) located between the Caribou S-3 Zone and the recently discovered Wolf Zone with 8.5 g/t Au over 4.7 metres. Wolf 2 Zone extends for more than 130 metres laterally and is open in its up-dip extension;  it now includes previously reported intercepts of 9.09 g/t Au over 5.2 metres in DDH EAG-12-448, 3.25 g/t Au over 2.4 metres in DDH OSK-16-708-W1, and 3.33 g/t Au over 1.2 metres in DDH EAG-13-504.

DDH OSK-W-16-722 intersected new near surface gold mineralization returning 6.08 g/t Au over 2.1 metres at the contact of a porphyry dyke. This intersection correlates with a previously reported intersection of 5.23 g/t Au over 2.0 metres in DDH EAG-13-497 located 63 metres below and to the SW.

DDH OSK-W-16-728 intersected 391.43 g/t Au over 3.1 metres, (14.65 g/t Au over 3.1 metres cut to 100 g/t Au), including 3,020 g/t Au over 0.4 metres along the projected Caribou Zone. This drill hole is a 440 metre step-out to the ENE of the current mineral resource and is located 230 metres from the nearest known mineralization in previously reported DDH OBM-16-580 which returned 4.3 g/t Au over 5.4 metres.

Full analytical results from the 5 new drill holes are available at www.osiskomining.com

For further information please contact:
John Burzynski
President and Chief Executive Officer
Telephone: (416) 363-8653

(Montréal, August 31, 2016).  Osisko Mining Inc. (OSK:TSX, “Osisko” or the “Corporation”) is pleased to announce new results from the ongoing drill program at its 100% owned Windfall Lake gold project located in the Urban Township, Québec. The current 100,000 metre drill program combines definition drilling above the Red Dog intrusion (‘Red Dog’), expansion drilling above and below Red Dog and exploration drilling on the greater property area.  A total of 9 new drill holes are reported in this release.

Further drilling in the recently announced Wolf Zone discovery has led to the expansion of the new zone.  DDH OSK-W-16-708-W1 intersected 12.2 g/t Au over 4.0 metres in the hanging wall (765.5m – 769.5m), 12.5 g/t Au over 3.8 metres in the Wolf Zone (816.5m – 820.3m), and significant additional intercepts in the footwall including 4.79 g/t Au over 2.4 metres (834.0m – 836.4m) and 15.4 g/t Au over 6.4 metres, (838.1m – 844.5m).  These new intercepts (hanging wall, Wolf Zone and footwall) are located approximately 100 metres vertically below the previously announced Wolf Zone discovery (OSK-W-16-710 which intersected 11.8 g/t Au over 6.7 metres from 562.0m – 568.9m, Osisko press release dated August 25, 2016), and are all open to the ENE.

Additional significant results in new holes presented in this release include:  23.2 g/t Au over 3.0 metres in DDH OSK-W-16-718 that expands another new (unnamed) zone by 95 metres up-dip, and 22.6 g/t Au over 3.0 metres in DDH OSK-W-16-715 that expands the Caribou S3 Zone by 95 metres in its down-dip extension.

These new intercepts demonstrate the high potential for significant new mineralization near the known Windfall mineral inventory through continued definition and exploratory drilling, more specifically in the eastern extension of the deposit.

Details of the significant new results are outlined in the table below:

Hole	From (m)	To (m)	Interval	Au	Zone
			(m)	(g/t)
OSK-W-16-309-W1	612.2	615.0	2.80	9.11	Quartz vein in Red Dog
OSK-W-16-309-W1	1115.00	1117.00	2.00	5.60	New – below Red Dog
including	1116.00	1117.00	1.00	11.2
OSK-W-16-706	549.60	552.60	3.00	8.65	Caribou S1
OSK-W-16-706	950.30	952.60	2.30	12.32	FW1
including	950.30	951.30	1.00	29.40
OSK-W-16-706-W1	886.20	888.20	2.00	4.93	FW1
including	886.20	887.20	1.00	9.72
OSK-W-16-708	354.00	356.20	2.20	3.65	Shear and quartz vein
including	354.80	355.10	0.30	14.00
OSK-W-16-708	796.00	798.00	2.00	17.1	Wolf
OSK-W-16-708	889.50	891.80	2.30	5.55	New
including	891.20	891.80	0.60	19.00
OSK-W-16-708	1022.50	1023.00	0.50	16.05	FW1
OSK-W-16-708-W1	765.50	769.50	4.00	12.2	Wolf
OSK-W-16-708-W1	816.50	820.30	3.80	12.5	Wolf
OSK-W-16-708-W1	834.00	836.40	2.40	4.79	Wolf
including	835.60	836.40	0.80	13.9
OSK-W-16-708-W1	838.10	844.50	6.40	15.4	Wolf
including	840.50	843.40	2.90	31.5
OSK-W-16-708-W1	1069.00	1071.00	2.00	8.27	FW3
including	1069.90	1070.20	0.30	41.70
OSK-W-16-708-W1	1163.00	1165.10	2.10	6.14	New below Red Dog
including	1163.00	1164.00	1.00	11.05
OSK-W-16-715	646.00	649.00	3.00	22.6	Caribou S3 Zone
including	647.50	649.00	1.50	41.0
OSK-W-16-715	668.50	671.50	3.00	6.84	New
including	668.50	670.00	1.50	13.1
OSK-W-16-715	800.80	801.30	0.50	18.9	Quartz vein in red dog
OSK-W-16-715	803.90	804.20	0.30	5.19	Quartz vein in red dog
OSK-W-16-718	431.90	434.90	3.00	23.2	New Correlates with 4.17 g/t Au over 2.0 m in OSK-W-16-715 located 95 m below
including	432.90	434.20	1.30	44.5
OSK-W-16-718	680.70	681.20	0.50	44.4	Quartz-carbonate vein

Drill Hole Collar Coordinates and Information

Hole Number	Azimuth (°)	Dip (°)	Length (m)	UTM E	UTM N	Section
OSK-W-16-309-W1	325.8	-63.2	1225	452548	5434514	2575
OSK-W-16-706	329.6	-58.4	1276.5	452610	5434420	2525
OSK-W-16-706-W1	329.6	-58.4	1276.5	452610	5434420	2525
OSK-W-16-708	331.0	-54.0	1258.5	452816	5434427	2775
OSK-W-16-708-W1	331.0	-54.0	1273.5	452816	5434427	2775
OSK-W-16-712	330.0	-55.0	40.5	452678	5434680	2775
OSK-W-16-713	330.5	-55.9	524.5	452678	5434680	2775
OSK-W-16-715	333.0	-61.0	805.5	452785	5434528	2800
OSK-W-16-718	332.1	-60.5	799.5	452742	5434575	2775

DDH OSK-W-16-309-W1 intersected 9.11 g/t Au over 2.8 metres in quartz veins hosted in Red Dog and 5.60 g/t Au over 2.0 metres in a new zone located to the NW of FW3 Zone below Red Dog.

DDH OSK-W-16-706 was designed to intersect both the FW1 and FW3 zones below Red Dog. The hole intersected the Caribou S1 Zone above Red Dog returning 8.65 g/t Au over 3.0 metres in a moderately silicified and sericitized andesite. The FW1 Zone assayed 12.32 g/t Au over 2.3 metres (including 28.4 g/t Au over 0.8 metres) in a moderately silicified and sericitized porphyry dyke. There was no significant mineralization or alteration in FW3 as this drill hole intersected this zone below the high grade shoot.

DDH OSK-W-16-706-W1 was also designed to intersect both the FW1 and FW3 zones below Red Dog. The hole intersected 4.93 g/t Au over 2.0 metres in the hanging wall of FW1 in a porphyry dyke and 2.85 g/t Au over 2.0 metres in the FW1 Zone.  Assays are still pending for the FW3 Zone in this hole.

DDH OSK-W-708 targeted the Wolf Zone above Red Dog and the FW1 and FW3 in the eastern sector of the deposit. The drill hole intersected 3.36 g/t Au over 2.4 metres that correlates with 7.04 g/t Au over 20.4 metres in OBM-15-559, located 30 m to the southwest.  The hole also intersected 17.1 g/t Au over 2.0 metres in the hanging wall of the newly discovered Wolf Zone and anomalous gold values in the Wolf Zone. The FW1 Zone returned 3.94 g/t Au over 2.1 metres and no significant results for FW3.

DDH OSK-W-708-W1 also targeted the Wolf Zone above Red Dog and the FW1 and FW3 in the sparsely drilled eastern sector of the deposit. The hole was drilled 115 metres below DDH OSK-W-16-710 which intersected 11.8 g/t Au over 6.7 metres. In DDH OSK-W-708-W1, the Wolf hanging wall zone returned 12.2 g/t Au over 4.0 metres, the Wolf Zone assayed 12.5 g/t Au over 3.8 metres and the footwall returned 4.79 g/t Au over 2.4 metres.  The Wolf zone, the hanging wall, and the footwall are open to the ENE.  This hole also intersected mineralizaton adjacent to the footwall zone, immediately above Red Dog, which returned 15.4 g/t Au over 6.4 metres, also open to the ENE.  Additional mineralization intersected includes 8.27 g/t Au over 2.0 metres in the hanging wall of FW3 and 3.74 g/t Au over 3.0 metres in the FW3 Zone.

DDH OSK-16-712 was abandoned due to difficult drilling conditions.

DDH OSK-W-16-713 targeted the down-dip extension of the Caribou Zone. No significant mineralization was intersected as a small post mineral dyke, similar to Red Dog, cross-cut mineralization at this location.

DDH OSK-W-16-715 and DDH OSK-W-16-718 were aimed at expanding gold mineralization discovered with DDH OBM-15-559 (7.04 g/t Au over 20.4 metres).  DDH OSK-W-16-715 expanded the zone by 70 metres down-dip with 4.38 g/t Au over 2.8 metres and DDH OSK-W-16-718 expanded the zone by 95 metres up-dip (23.2 g/t Au over 3.0 metres).  Additional drilling is planned in this sector to define to size of this zone.

Full analytical results from the 9 new drill holes are available at www.osiskomining.com.

Qualified Person
The scientific and technical content of this press release has been reviewed, prepared and approved by Mr. Jean-Philippe Desrochers, Ph.D., P.Geo. Senior Project Manager of the Windfall Lake gold project, who is a “Qualified Person” as defined by National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101”).

Quality Control
True widths of the new exploration intercepts reported in this press release have yet to be determined. Additional drilling is planned for the immediate area which will enable the true width determination. Assays are uncut except where indicated. All NQ core assays reported were obtained by either 1 kg whole rock metallic screen/fire assay or standard 50 gram fire-assaying with AA or gravimetric finish at ALS Laboratories in Val dOr, Québec or Sudbury, Ontario. The 1 kg metallic screen assay method is selected by the geologist when samples contain coarse gold or present a higher percentage of pyrite than surrounding intervals. All samples are also analysed for multi-elements, including silver, using an Aqua Regia-ICP-AES method at ALS laboratories. Drill program design, Quality Assurance/Quality Control and interpretation of results is performed by qualified persons employing a QA/QC program consistent with NI 43-101 and industry best practices. Standards and blanks are included with every 20 samples for QA/QC purposes by the Corporation as well as the lab. Approximately 5% of sample pulps are sent to secondary laboratories for check assays.

About the Windfall Lake Gold Deposit
The Windfall Lake gold deposit is located between Val-dOr and Chibougamau in the Abitibi region of Québec, Canada. The current mineral resource comprises 2,762,000 tonnes at 8.42 g/t Au (748,000 ounces) in the indicated category and 3,512,000 tonnes at 7.62 g/t Au (860,000 ounces) in the inferred category (sourced from a technical report dated June 10, 2015 entitled “Preliminary Economic Assessment of the Windfall Lake Gold Property, Quebec, Canada” with an effective date of April 28, 2015, prepared in accordance with NI 43-101). The Windfall Lake gold deposit is currently one of the highest grade resource-stage gold projects in Canada. The bulk of the mineralization occurs in the Main Zone, a southwest/northeast trending zone of stacked mineralized lenses, measuring approximately 600 metres wide and at least 1,400 metres long. The deposit is well defined from surface to a depth of 500 metres, and remains open along strike and at depth. Mineralization has been identified only 30 metres from surface in some areas and as deep as 870 metres in others, with significant potential to extend mineralization up and down-plunge and at depth.

About Osisko Mining Inc.
Osisko is a mineral exploration company focused on the acquisition, exploration, and development of precious metal resource properties in Canada. Osisko holds a 100% in the high-grade Windfall Lake gold deposit located between Val-dOr and Chibougamau in Québec and holds a 100% undivided interest in a large area of claims in the surrounding Urban Barry area (82,400 hectares), a 100% interest in the Marban project located in the heart of Québecs prolific Abitibi gold mining district, and properties in the Larder Lake Mining Division in northeast Ontario, including the Jonpol and Garrcon deposits on the Garrison property, the Buffonta past producing mine and the Gold Pike mine property. The Corporation also holds interests and options in a number of additional properties in northern Ontario.  Osisko continues to be well financed and has approximately $50 million in cash and cash equivalents as well as marketable securities of approximately $60 million.

Cautionary Note Regarding Forward-Looking Information
This news release contains “forward-looking information” within the meaning of the applicable Canadian securities legislation that is based on expectations, estimates and projections as at the date of this news release. The information in this news release about pending transactions, potential mineralization, the ability to realize upon any mineralization in a manner that is economic, the ability to complete any proposed exploration activities and the results of such activities; the continuity or extension of any mineralization; and any other information herein that is not a historical fact may be “forward-looking information”. Any statement that involves discussions with respect to predictions, expectations, beliefs, plans, projections, objectives, assumptions, future events or performance (often but not always using phrases such as “expects”, or “does not expect”, “is expected”, “anticipates” or “does not anticipate”, “plans”, “budget”, “scheduled”, “forecasts”, “estimates”, “believes” or “intends” or variations of such words and phrases or stating that certain actions, events or results “may” or “could”, “would”, “might” or “will” be taken to occur or be achieved) are not statements of historical fact and may be forward-looking information and are intended to identify forward-looking information. This forward-looking information is based on reasonable assumptions and estimates of management of Osisko, at the time it was made, involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of Osisko to be materially different from any future results, performance or achievements expressed or implied by such forward-looking information. Such factors include, among others, risks relating to property interests; ability to obtain required approvals, complete definitive documentation and complete transactions on the terms announced, ability of Osisko to complete further exploration activities, including drilling; the results of exploration activities; risks relating to mining activities; the global economic climate; metal prices; dilution; environmental risks; and community and non-governmental actions. Although the forward-looking information contained in this news release is based upon what management believes, or believed at the time, to be reasonable assumptions, Osisko cannot assure shareholders and prospective purchasers that actual results will be consistent with such forward-looking information, as there may be other factors that cause results not to be as anticipated, estimated or intended, and neither Osisko nor any other person assumes responsibility for the accuracy and completeness of any such forward-looking information. Osisko does not undertake, and assumes no obligation, to update or revise any such forward-looking statements or forward-looking information contained herein to reflect new events or circumstances, except as may be required by law.

For further information please contact:

John Burzynski
President and Chief Executive Officer
Telephone: (416) 363-8653

(Montréal, July 26, 2016).  Osisko Mining Inc. (OSK:TSX, “Osisko” or the “Corporation”) is pleased to announce new results from the ongoing drill program at its 100% owned Windfall Lake gold project located in the Urban Township, Québec. The expanded 100,000 metre drill program combines definition drilling above the Red Dog intrusion (‘Red Dog’), expansion drilling above and below Red Dog and exploration drilling on the greater property area.

Highlights from 27 new drill holes include: 16.6 g/t Au over 6.7 metres in DDH OBM-16-674; 5.40 g/t Au over 11.7 metres in DDH OBM-16-685; 13.2 g/t Au over 4.4 metres in DDH OBM 16-692; and 15.9 g/t Au over 2.6 metres in DDH OBM-16-671. The new results continue to demonstrate lateral and vertical continuity of high grade gold mineralization in Zone 27 and the Caribou Zone, and also highlight new zones developing between those two major mineralized corridors.  The table below outlines significant new results⁽¹⁾⁽²⁾:

Hole			From (m)	To (m)	Interval (m)	Au (g/t)	Zone
OBM-16-671			339.40	342.00	2.60	15.9(3)	Crustiform vein
including			339.40	339.80	0.40	152
			361.40	365.90	4.50	5.99	New Zone
			377.10	379.20	2.10	7.37	Tourmaline vein
including			378.60	379.20	0.60	19.5
OBM-16-674			106.30	113.00	6.70	16.6	Zone 27
including			106.30	107.00	0.70	47.0
and			110.40	111.80	1.40	45.7
OBM-16-675			297.60	301.70	4.10	8.23	New Zone
			331.00	333.00	2.00	9.10	Crustiform vein
including			331.50	331.90	0.40	42.8
OBM-16-684			130.00	134.00	4.00	5.22	Caribou
including			132.00	133.00	1.00	15.0
OBM-16-685			321.70	333.40	11.70	5.40	Zone 27
including			321.70	325.00	3.30	9.63
OBM-16-687			354.00	361.00	7.00	6.61	New Zone
including			354.80	355.40	0.60	67.0
			537.90	540.00	2.10	4.78	Zone 27
including			537.90	539.20	1.30	7.69
OBM-16-689			492.30	495.40	3.10	9.12	New Zone
including			492.30	493.40	1.10	25.1
			594.00	602.00	8.00	4.36	Zone 27
			615.70	618.00	2.30	9.85	Zone 27 footwall
including			616.40	617.10	0.70	23.7
OBM-16-692			42.60	47.00	4.40	13.2	Crustiform vein
Including			42.60	44.90	2.30	23.9
including			43.00	44.00	1.00	27.9
and			44.60	44.90	0.30	81.1
OBM-16-693			280.30	283.20	2.90	8.22	Caribou
including			282.50	283.20	0.70	31.5
OBM-16-694			19.60	21.60	2.00	7.52	Crustiform vein
including			19.60	20.30	0.70	20.5
OBM-16-696			348.20	351.50	3.30	5.50	Caribou
including			350.00	351.50	1.50	7.82

1. For complete drilling results please see www.osiskomining.com.
2. True widths are estimated at 65-80% of the reported core length interval. See “Quality Control” below.
3. High grade values cut to 100 g/t Au.

Drill Hole Collar Coordinates and Information:

Hole Number	Azimuth (°)	Dip (°)	Length (m)	UTM E	UTM N	Section
OBM-16-669	330.0	-45.0	403.5	452502	5434709	2625
OBM-16-671	330.0	-57.0	490.5	452370	5434591	2450
OBM-16-672	333.0	-47.0	352.5	452107	5434431	2150
OBM-16-673	329.5	-56.8	496.5	452518	5434738	2650
OBM-16-674	150.0	-60.0	172.5	451922	5434714	2125
OBM-16-675	332.0	-55.0	433.5	452335	5434611	2425
OBM-16-676	330.0	-54.0	157.5	452261	5434544	2350
OBM-16-677	328.4	-50.9	126.5	452178	5434723	2350
OBM-16-678	328.0	-52.0	187.5	452349	5434663	2475
OBM-16-679	325.0	-65.0	139.5	452254	5434791	2450
OBM-16-680	331.0	-53.0	19.5	452622	5434834	2800
OBM-16-681	331.0	-53.0	373.5	452622	5434834	2800
OBM-16-682	331.3	-54.6	130.5	452271	5434798	2475
OBM-16-683	330.0	-53.0	40.5	452314	5434640	2425
OBM-16-684	329.6	-53.0	211.5	452382	5434627	2500
OBM-16-685	331.7	-53.2	385.5	452314	5434637	2425
OBM-16-686	153.3	-57.3	196.5	452206	5434907	2475
OBM-16-687	330.1	-55.5	571.5	452475	5434593	2550
OBM-16-688	148.0	-61.0	10.1	452247	5434899	2500
OBM-16-689	330.1	-54.2	688.5	452629	5434689	2725
OBM-16-690	150.4	-53.7	199.5	452241	5434921	2500
OBM-16-691	331.0	-53.0	329.1	452454	5434638	2250
OBM-16-692	150.0	-54.0	183.5	452270	5434933	2525
OBM-16-693	331.0	-54.0	541.5	452442	5434600	2525
OBM-16-694	150.0	-56.0	91.5	452366	5434998	2650
OBM-16-695	332.0	-61.0	148.5	452701	5434784	2850
OBM-16-696	333.0	-61.0	511.5	452709	5434811	2850

DDH OBM-16-671 intersected a crustiform vein assaying 15.9 g/t Au over 2.6 metres at 339.4 metres followed by a new zone located 54 metres to the south of Zone 27 and that returned 5.99 g/t Au over 4.5 metres. 

DDH OBM-16-674 drilled the upper extension of Zone 27 with 16.6 g/t Au over 6.7 metres at a vertical depth of 95 metres below surface at the contact of a strongly altered porphyry dyke containing up to 20% pyrite. 

DDH OBM-16-675 tested the upper extension of the new zone intersected in OBM-16-671 with 8.23/t Au over 4.1 metres and extended this zone 65 metres vertically. It also intersected a crustiform vein averaging 9.1 g/t Au over 2.0 metres that correlates with the crustiform vein intersected 45 metres to the southeast in DDH OBM-16-671. 

DDH OBM-16-684 intersected the Caribou Zone 100 metres below surface and returned 5.22 g/t Au over 4.0 metres, including 15.0 g/t Au over 1.0 metre in a porphyry dyke. 

DDH OBM-16-685 tested a sparsely drilled sector of Zone 27 and intersected 9.63 g/t Au over 3.3 metres, included in 5.4 g/t Au over 11.7 metres at the contact of a porphyry dyke with a volcanic unit and confirms the continuity of the high grade gold. 

DDH OBM-16-687 targeted the lower portion of Zone 27, above the Red Dog, and expanded the zone by 25 metres down-plunge with 4.78 g/t Au over 2.1 metres at 537.9 metres down the hole. The hole also intersected a new zone at 354.0 metres which returned 6.61 g/t Au over 7.0 metres between Caribou S1 Zone and Caribou North 2 Zone. 

DDH OBM-16-689 discovered a new zone 30 metres southeast of Zone 27 at 400 metres below surface which returned 9.12 g/t Au over 3.1 metres, including 25.1 g/t Au over 1.1 metre at the upper contact of a porphyry dyke. The targeted Zone 27 returned 4.36 g/t Au over 8.0 metres followed by another interval 9.85 g/t Au over 2.3 metres in the Zone 27 footwall. 

DDH OBM-16-692 tested shallow gold mineralization above Zone 27 and intersected 13.2 g/t Au over 4.4 metres, including 27.9 g/t Au over 1.0 metre and 81.1 g/t Au over 0.3 metres in a crustiform vein, at a vertical depth of 30 metres below surface. 

DDH OBM-16-693 expanded the Caribou Zone by 23 metres in its down dip extension with 8.22 g/t Au over 2.9 metres, including 31.5 g/t Au over 0.7 metres in a felsic volcanic rock unit. 

DDH OBM-16-694 tested shallow gold mineralization above Zone 27 and intersected 7.52 g/t Au over 2.0 metres in a crustiform vein at a vertical depth of 16 metres below surface in a porphyry dyke. 

DDH OBM-16-696 extended the Caribou Zone by 56 metres in its ENE strike extension with 5.5 g/t Au over 3.3 metres in a felsic volcanic rock unit.  

DDH’s OBM-16-669, -672, -673, -676 to -683, -686, -688, -690, -691, and -695 did not return significant results.  Full analytical results from the 27 new drill holes are available at www.osiskomining.com. 

Qualified Person

The scientific and technical content of this press release has been reviewed by Mr. Jean-Philippe Desrochers, Ph.D., P.Geo. Senior Project Manager of the Windfall Lake gold project, who is a “Qualified Person” as defined by National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101”).

Quality Control

True widths of the new exploration intercepts reported in this press release have yet to be determined. Additional drilling is planned for the immediate area which will enable the true width determination. Assays are uncut except where indicated. All NQ core assays reported were obtained by either 1 kg whole rock metallic screen/fire assay or standard 50 gram fire-assaying with AA or gravimetric finish at ALS Laboratories in Val dOr, Québec or Sudbury, Ontario. The 1 kg metallic screen assay method is selected by the geologist when samples contain coarse gold or present a higher percentage of pyrite than surrounding intervals. All samples are also analysed for multi-elements, including silver, using an Aqua Regia-ICP-AES method at ALS laboratories. Drill program design, Quality Assurance/Quality Control and interpretation of results is performed by qualified persons employing a QA/QC program consistent with NI 43-101 and industry best practices. Standards and blanks are included with every 20 samples for QA/QC purposes by the Corporation as well as the lab. Approximately 5% of sample pulps are sent to secondary laboratories for check assays.

About the Windfall Lake Gold Deposit

The Windfall Lake gold deposit is located between Val-dOr and Chibougamau in the Abitibi region of Québec, Canada. The current mineral resource comprises 2,762,000 tonnes at 8.42 g/t Au (748,000 ounces) in the indicated category and 3,512,000 tonnes at 7.62 g/t Au (860,000 ounces) in the inferred category (sourced from a technical report dated June 10, 2015 entitled “Preliminary Economic Assessment of the Windfall Lake Gold Property, Quebec, Canada” with an effective date of April 28, 2015, prepared in accordance with NI 43-101). The Windfall Lake gold deposit is currently one of the highest grade resource-stage gold projects in Canada. The bulk of the mineralization occurs in the Main Zone, a southwest/northeast trending zone of stacked mineralized lenses, measuring approximately 600 metres wide and at least 1,400 metres long. The deposit is well defined from surface to a depth of 500 metres, and remains open along strike and at depth. Mineralization has been identified only 30 metres from surface in some areas and as deep as 870 metres in others, with significant potential to extend mineralization up and down-plunge and at depth.

About Osisko Mining Inc.

Osisko is a mineral exploration company focused on the acquisition, exploration, and development of precious metal resource properties in Canada. Osisko holds a 100% in the high-grade Windfall Lake gold deposit located between Val-dOr and Chibougamau in Québec and holds a 100% undivided interest in a large area of claims in the surrounding Urban Barry area (82,400 hectares), a 100% interest in the Marban project located in the heart of Québecs prolific Abitibi gold mining district, and properties in the Larder Lake Mining Division in northeast Ontario, including the Jonpol and Garrcon deposits on the Garrison property, the Buffonta past producing mine and the Gold Pike mine property. The Company also holds interests and options in a number of additional properties in northern Ontario. Osisko is well financed with approximately $90 million in cash, cash equivalents and marketable securities (pro-forma financing announced June 27, 2016).

Cautionary Note Regarding Forward-Looking Information

This news release contains “forward-looking information” within the meaning of the applicable Canadian securities legislation that is based on expectations, estimates and projections as at the date of this news release. The information in this news release about pending drilling, ongoing drill program, potential mineralization, the ability to realize upon any mineralization in a manner that is economic, the ability to complete any proposed exploration activities and the results of such activities; the continuity or extension of any mineralization; and any other information herein that is not a historical fact may be “forward-looking information”. Any statement that involves discussions with respect to predictions, expectations, beliefs, plans, projections, objectives, assumptions, future events or performance (often but not always using phrases such as “expects”, or “does not expect”, “is expected”, “anticipates” or “does not anticipate”, “plans”, “budget”, “scheduled”, “forecasts”, “estimates”, “believes” or “intends” or variations of such words and phrases or stating that certain actions, events or results “may” or “could”, “would”, “might” or “will” be taken to occur or be achieved) are not statements of historical fact and may be forward-looking information and are intended to identify forward-looking information. This forward-looking information is based on reasonable assumptions and estimates of management of Osisko, at the time it was made, involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of Osisko to be materially different from any future results, performance or achievements expressed or implied by such forward-looking information. Such factors include, among others, risks relating to property interests; ability of Osisko to complete further exploration activities, including drilling; the results of exploration activities; risks relating to mining activities; the global economic climate; metal prices; dilution; environmental risks; and community and non-governmental actions. Although the forward-looking information contained in this news release is based upon what management believes, or believed at the time, to be reasonable assumptions, Osisko cannot assure shareholders and prospective purchasers that actual results will be consistent with such forward-looking information, as there may be other factors that cause results not to be as anticipated, estimated or intended, and neither Osisko nor any other person assumes responsibility for the accuracy and completeness of any such forward-looking information. Osisko does not undertake, and assumes no obligation, to update or revise any such forward-looking statements or forward-looking information contained herein to reflect new events or circumstances, except as may be required by law.

For further information please contact:

John Burzynski
President and Chief Executive Officer
Telephone: (416) 363-8653