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Osisko Mining Inc. (OSK.TO)

Toronto - Toronto Real Time Price. Currency in CAD
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3.8000+0.0500 (+1.33%)
As of 3:00PM EDT. Market open.
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Previous Close3.7500
Open3.6900
Bid3.8000 x 0
Ask3.8100 x 0
Day's Range3.6600 - 3.8200
52 Week Range1.6700 - 4.8500
Volume528,393
Avg. Volume1,936,019
Market Cap1.295B
Beta (5Y Monthly)1.35
PE Ratio (TTM)N/A
EPS (TTM)-0.1300
Earnings DateNov. 09, 2020 - Nov. 13, 2020
Forward Dividend & YieldN/A (N/A)
Ex-Dividend DateN/A
1y Target Est6.17
  • GlobeNewswire

    Osisko Infill Drilling Returns High Grade at Windfall

    Including 22.3 g/t Au Over 15.9 MetresTORONTO, Oct. 08, 2020 (GLOBE NEWSWIRE) -- Osisko Mining Inc. (OSK:TSX. "Osisko" or the "Corporation") is pleased to provide new analytical results from the ongoing expansion and definition drill program at its 100% owned Windfall gold project located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Québec. Drilling is currently focused on the Lynx deposit. Osisko Chief Executive Officer John Burzynski commented: “Infill drilling is progressing very well, daily increasing our confidence in the continuity and prevalence of high-grade mineralization at Windfall. Today’s infill results contain 18 intercepts with uncut average grades of over half an ounce per tonne, including the spectacular 22.3 g/t Au over 15.9 metres, showing that Lynx not only has grade but can also deliver width.”The table below contains resource definition infill intercepts located inside the February 2020 mineral resource estimate wireframes (see Osisko news release dated February 19, 2020). Significant new analytical results are presented below and include 67 intercepts in 26 drill holes and 8 wedges.Selected high-grade intercepts from the new results include: 314 g/t Au over 3.0 metres in OSK-W-20-2260-W1; 22.3 g/t Au over 15.9 metres in OSK-W-20-2139-W10; 33.6 g/t Au over 9.8 metres in OSK-W-20-2280-W1; 127 g/t Au over 2.3 metres in OSK-W-20-2256; 97.8 g/t Au over 2.5 metres in OSK-W-20-2292-W1; and 53.4 g/t Au over 2.1 metres in OSK-W-20-2252-W4. Maps showing hole locations and full analytical results are available at www.osiskomining.comInfill Drilling Hole No.From (m)To (m)Interval (m)Au (g/t) uncutAu (g/t) cut to 100 g/tZoneCorridor OSK-W-20-2139-W10899.0914.915.922.3 Lynx_371 Triple Lynx including907.1907.60.580.2   941.9944.02.117.4 Lynx_363Triple Lynx OSK-W-20-2197-W2780.0782.02.010.1 Lynx_363 Triple Lynx including780.8781.70.922.1  OSK-W-20-2252-W2826.0828.02.04.03 Lynx_371Triple Lynx  833.0835.02.04.41 Lynx_371Triple Lynx OSK-W-20-2252-W4880.5882.62.153.433.2Lynx_371 Triple Lynx including882.0882.60.6171100  889.0892.03.03.24 Lynx_361Triple Lynx  902.0904.02.041.5 Lynx_361 Triple Lynx including903.0904.01.082.1  OSK-W-20-2256852.8855.02.244.419.7Lynx_371 Triple Lynx including853.2853.60.4236100  881.1883.42.312751.1Lynx_361 Triple Lynx including882.2882.80.6390100  894.0896.22.24.63 Lynx_361Triple Lynx  898.0900.02.011.3 Lynx_361Triple Lynx  978.9982.94.04.44 Lynx_369 Triple Lynx including982.2982.90.710.5  OSK-W-20-2256-W4930.0934.04.05.63 Lynx_364Triple Lynx  963.0965.02.019.3 Lynx_369 Triple Lynx including964.0964.50.576.4  OSK-W-20-2260-W1843.0846.03.031438.0Lynx_361 Triple Lynx including843.4844.41.0927100 OSK-W-20-2272613.0615.02.03.45 Lynx_356Lynx OSK-W-20-2275796.0798.02.04.38 Lynx_365 Triple Lynx including796.0796.60.611.3   837.0839.22.223.422.8Lynx_365 Triple Lynx including837.7838.20.5102100 OSK-W-20-22801003.71006.32.64.94 Lynx_368 Triple Lynx including1003.71004.00.311.1  and1004.01004.40.410.5   1025.91030.14.28.13 Lynx_363 Triple Lynx including1027.01027.50.525.5   1038.01040.02.03.76 Lynx_363 Triple Lynx including1039.41040.00.68.10   1067.01069.02.012.5 Lynx_364 Triple Lynx including1067.81068.10.352.1   1079.01081.02.04.09 Lynx_364Triple Lynx  1088.71094.45.716.812.9Lynx_369 Triple Lynx including1093.21093.50.3173100  1109.01111.02.04.64 Lynx_370Triple Lynx OSK-W-20-2280-W11006.01008.02.04.22 Lynx_368 Triple Lynx including1006.01007.01.08.08   1013.01016.03.04.82 Lynx_368Triple Lynx  1021.91024.12.220.3 Lynx_363Triple Lynx  1043.41047.64.227.7 Lynx_363 Triple Lynx including1043.71044.71.078.6   1080.81083.02.24.81 Lynx_364Triple Lynx  1097.01106.89.833.627.6Lynx_370 Triple Lynx including1102.01104.02.0129100 and1106.51106.80.3108100 OSK-W-20-2288624.4633.99.512.0 Lynx_356 Lynx including629.4630.00.627.9  and632.7633.30.628.8  OSK-W-20-2292852.0854.02.03.87 Lynx_363 Triple Lynx including852.0852.70.710.9  OSK-W-20-2292-W1835.9838.02.13.39 Lynx_361Triple Lynx  840.0843.53.53.65 Lynx_361 Triple Lynx including840.0840.40.47.83  and843.0843.50.59.84   857.0859.32.326.0 Lynx_363 Triple Lynx including858.3859.31.057.6   889.5892.02.597.832.2Lynx_364 Triple Lynx including890.3891.10.8305100 OSK-W-20-2293139.9142.42.55.25 F17_6005 F-17 including142.0142.40.418.0  OSK-W-20-2297128.0131.03.029.324.2F17_6003 F-17 including128.0128.40.4138100  166.5168.82.35.82 F17_6005F-17 OSK-W-20-2300149.7154.04.37.42 F17_6005 F-17 including151.0152.01.015.6  OSK-W-20-2312126.0128.02.07.26 Mallard_5200 Mallard including127.0127.60.622.6  OSK-W-20-2315127.0129.02.05.59 Mallard_5200Mallard  157.0159.02.04.13 Mallard_5213Mallard OSK-W-20-2321166.3168.52.26.40 Mallard_5213 Mallard including167.2167.80.621.2  OSK-W-20-2323153.0155.02.03.88 Mallard_5213 Mallard including154.7155.00.324.1  OSK-W-20-2327105.3111.46.113.6 Mallard_5213 Mallard including109.0110.01.048.9  WST-20-013572.074.32.34.20 Lynx_311 Lynx including73.974.30.414.6  WST-20-031865.068.53.536.2 Lynx_311 Lynx including66.066.70.791.0  WST-20-0389A192.0194.32.39.23 Lynx_341 Lynx including192.0192.60.623.5   553.9555.92.03.44 Lynx_340 Lynx including553.9554.30.415.7  WST-20-0391A91.694.12.56.21 Lynx_304 Lynx including93.494.10.717.6   98.3100.52.23.47 Lynx_304Lynx WST-20-039282.884.82.08.12 Lynx_323 Lynx including83.483.80.426.3   88.090.22.25.49 Lynx_323Lynx  107.0109.72.711.2 Lynx_304 Lynx including108.4108.80.470.9  WST-20-039348.951.52.64.68 Lynx_325 Lynx including50.050.70.710.2   113.2115.92.75.34 Lynx_304 Lynx including114.3114.80.518.8  WST-20-0402142.1144.42.325.814.3Lynx_301 Lynx including142.1142.40.3189100 WST-20-040985.487.42.03.37 Lynx_323Lynx WST-20-041297.699.92.39.21 Lynx_323 Lynx including99.699.90.348.5  WST-20-042187.690.02.43.87 Lynx_323 Lynx including88.288.50.328.3   151.0153.22.24.96 Lynx_321 Lynx including152.3153.20.911.2  WST-20-0423101.0103.72.75.56 Lynx_304Lynx  109.0112.03.09.95 Lynx_359Lynx WST-20-0424115.0117.02.08.3 Lynx_359 Lynx including116.0117.01.015.4  Notes: True widths are estimated at 55 – 80% of the reported core length interval. See "Quality Control and Reporting Protocols" below.Drill hole locationHole NumberAzimuth (°)Dip (°)Length (m)UTM EUTM NElevationSection OSK-W-20-2139-W10115-52121245298054355494203450 OSK-W-20-2197-W2121-48106445308754355264173550 OSK-W-20-2252-W2129-54119445324154356944153750 OSK-W-20-2252-W4129-54114345324154356944153750 OSK-W-20-2256125-51117945316054356864143675 OSK-W-20-2256-W4125-51112245316054356864143675 OSK-W-20-2260-W1127-48114045320154356674133700 OSK-W-20-2272149-45100445296754352654123300 OSK-W-20-2275127-49109445288654355844093400 OSK-W-20-2280127-58116145330454356394153775 OSK-W-20-2280-W1127-58117045330454356394153775 OSK-W-20-2288146-5174945287554351814093175 OSK-W-20-2292125-54105945303754355634203525 OSK-W-20-2292-W1125-54114945303754355634203525 OSK-W-20-2293145-4418345265854355494063175 OSK-W-20-2297149-4718045265254355674053175 OSK-W-20-2300152-4519245269954355784063225 OSK-W-20-2312334-5119245196454348164082225 OSK-W-20-2315334-5219245197954348054072225 OSK-W-20-2321332-5117645195854347904072200 OSK-W-20-2323335-4917145193654347914052175 OSK-W-20-2327334-4913245190154348104012150 WST-20-0135187-5844445322654351251343475 WST-20-0318148-5250245322854351271343475 WST-20-0389A115-4661645345254352661153725 WST-20-0391A135817445335954352091553625 WST-20-0392126218145335954352091553625 WST-20-0393153-3717545335854352081543625 WST-20-04021473216245349354352871193775 WST-20-04091552116945345054352641173725 WST-20-04121642416545345054352641173725 WST-20-04211621616845345054352641173725 WST-20-0423134-1814245335954352091543625 WST-20-0424160517845335854352081553625 Lynx ZoneMineralization occurs as grey to translucent quartz-carbonate-pyrite-tourmaline veins and pyrite replacement zones and stockworks. The vein-type is associated with haloes of pervasive sericite-pyrite ± silica alteration and contain sulphides (predominantly pyrite with minor amounts of chalcopyrite, sphalerite, galena, arsenopyrite, and pyrrhotite) and local visible gold. Replacement mineralization is associated with strong pervasive silica-sericite-ankerite ± tourmaline alteration and contains disseminated pyrite from trace to 80% with local visible gold. Pyrite stockworks can form envelopes that reach several tens of metres thick. Fuchsite alteration is common and is spatially constrained to near the gabbros. Mineralization occurs at or near geological contacts between felsic porphyritic or fragmental intrusions and the host rhyolites or gabbros and locally can be hosted along the gabbro-rhyolite contact.F-ZoneMineralization is hosted in sheared andesites with carbonate replacement or quartz veining and occurs as quartz ± ankerite veinlets or in shear zones as replacement, characterised by trace to 10% pyrite with local visible gold. Alteration is dominated by sericite-fuchsite-tourmaline-pyrite.MallardMineralization is hosted in sheared mafic volcanics with felsic porphyritic intrusions and occurs as veins associated with sericite-pyrite ± silica ± chlorite alteration and contains pyrite ranging from trace to 30% and local visible gold.Qualified Person The scientific and technical content of this news release has been reviewed, prepared and approved by Mr. Louis Grenier, M.Sc.A., P.Geo. (OGQ 800), Project Manager of Osisko's 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 width determination is estimated at 55-80% of the reported core length interval for the zone. Assays are uncut except where indicated. Intercepts occur within geological confines of major zones but have not been correlated to individual vein domains at this time. Reported intervals include minimum weighted averages of 3.0 g/t Au diluted over core lengths of at least 2.0 metres. All NQ core assays reported were obtained by either 1-kilogram screen fire assay or standard 50-gram fire-assaying-AA finish or gravimetric finish at (i) ALS Laboratories in Val d'Or, Québec, Thunder Bay, Ontario, Sudbury, Ontario or Vancouver, British Colombia, or (ii) Bureau Veritas in Timmins, Ontario. The 1-kilogram screen assay method is selected by the geologist when samples contain coarse gold or present a higher percentage of pyrite than surrounding intervals. Selected 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 ("QA/QC") 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 assay.About the Windfall Gold Deposit The Windfall gold deposit is located between Val-d'Or and Chibougamau in Eeyou Istchee James Bay, Québec, Canada. The mineral resource defined by Osisko, as disclosed in the news release dated February 19, 2020 and supported by the technical report entitled “An updated mineral resource estimate for the Windfall Lake Project, Located in the Abitibi Greenstone Belt, Urban Township, Eeyou Istchee James Bay, Québec, Canada” and dated April 3, 2020 (with an effective date of January 3, 2020), and assuming a cut-off grade of 3.5 g/t, comprises 4,127,000 tonnes at 9.1 g/t Au (1,206,000 ounces) in the indicated mineral resource category and 14,532,000 tonnes at 8.40 g/t Au (3,938,000 ounces) in the inferred mineral resource category. The key assumptions, parameters and methods used to estimate the mineral resource estimate disclosed in the February 19,2020 news release are further described in the full technical report prepared by Micon International Limited ("Micon") and BBA Inc ("BBA"), in accordance with NI 43-101 available on SEDAR (www.sedar.com) under the Corporation's issuer profile. The Windfall gold deposit is currently one of the highest-grade resource-stage gold projects in Canada and has world-class scale. Mineralization occurs in three principal zones: Lynx, Main Zone, and Underdog. Mineralization is generally comprised of deformed sub-vertical zones plunging to the northeast. Vein-type or pyrite replacement-type styles of mineralization crosscut syn-volcanic host rocks and syn-deformation felsic porphyry intrusions and are spatially associated with the contacts of the intrusions. The deposit is well defined from surface to a depth of 1,200 metres and remains open along strike and at depth. Mineralization has been identified 30 metres from surface in some areas and as deep as 2,000 metres in others, with significant potential to extend mineralization 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% interest in the high-grade Windfall gold deposit located between Val-d'Or and Chibougamau in Québec and holds a 100% undivided interest in a large area of claims in the surrounding Urban Barry area and nearby Quévillon area (over 2,700 square kilometres).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. Any statement that involves 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", "management's view", "anticipates" or "does not anticipate", "plans", "budget", "scheduled", "forecasts", "estimates", "potential", "feasibility", "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 news release contains the forward-looking information pertaining to, among other things: the Windfall gold deposit being one of the highest-grade resource-stage gold projects in Canada and having world-class scale; the key assumptions, parameters and methods used to estimate the mineral resource estimate; the prospects, if any, of the Windfall gold deposit; the timing and ability of Osisko, if at all, to publish a feasibility study for the Windfall gold deposit; the projected capital expenditures of mining activities at the Windfall gold deposit; upgrading an inferred mineral resource to a measured mineral resource or indicated mineral resource category; future drilling at the Windfall gold deposit; the deposit remaining open along strike to the northeast and at depth; significant high-grade zones (Lynx 4, Triple Lynx) remaining open down plunge; the plunge potential of the Lynx and Underdog zones; the significance of historic exploration activities and results. Such factors include, among others, risks relating to the ability of exploration activities (including drill results) to accurately predict mineralization; errors in management's geological modelling; the ability of Osisko to complete further exploration activities, including drilling; property and royalty interests in the Windfall gold deposit; the ability of the Corporation to obtain required approvals; 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.CONTACT INFORMATION: John Burzynski Chief Executive Officer Telephone (416) 363-8653

  • Baystreet

    Stocks in play: Osisko Mining Inc.

    Provided new analytical results from the ongoing drill program at its 100% owned Windfall gold project ...

  • GlobeNewswire

    Osisko Step-out Drilling Expands High Grade at Windfall

    Including 391 g/t Au Over 2.4 Metres in Triple LynxTORONTO, Oct. 07, 2020 (GLOBE NEWSWIRE) -- Osisko Mining Inc. (OSK:TSX. "Osisko" or the "Corporation") is pleased to provide new analytical results from the ongoing drill program at its 100% owned Windfall gold project located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Québec. Drilling is currently focused on the Lynx deposit. Osisko Chief Executive Officer John Burzynski commented: “Windfall continues to grow in scale with impressive results flowing in from the Lynx deposit. Today’s new intersections are all from outside the published resource area and include 15 intercepts with uncut average grades of over one oz/t. The ongoing expansion drilling continues to show the incredible upside growth potential of our deposit.”The table below shows intercepts located outside the February 2020 mineral resource estimate wireframes (see Osisko news release dated February 19, 2020). These intercepts either expand the resource wireframes or are located in a defined zone/corridor but not yet correlated to a specific wireframe. Significant new analytical results are presented below and include 110 intercepts in 43 drill holes and 24 wedges.Selected high-grade intercepts from the new results include: 391 g/t Au over 2.4 metres, 70 metres toward surface from wireframe Lynx_361, in OSK-W-20-2133-W2; 142 g/t Au over 2.3 metres in OSK-W-20-2307; 86.0 g/t Au over 2.1 metres in WST-20-0341A; 73.8 g/t Au over 2.0 metres in WST-20-0470; 54.4 g/t Au over 4.8 metres in OSK-W-20-2252-W2; and 49.8 g/t Au over 2.2 metres in OSK-W-20-2292. Maps showing hole locations and full analytical results are available at www.osiskomining.comExpansion DrillingHole No.From (m)To (m)Interval (m)Au (g/t) uncutAu (g/t) cut to 100 g/tZoneCorridor OSK-W-17-1258971.7973.72.03.33 Lynx 4 Lynx including971.7972.71.06.56  OSK-W-18-1727782.9784.92.012.7 LynxLynx OSK-W-19-1857-W111301.81304.62.87.39 Lynx 4Lynx OSK-W-19-2100-W41212.51214.72.25.22 Triple LynxTriple Lynx  1242.01244.02.06.47 Triple LynxTriple Lynx OSK-W-19-2101664.4667.02.65.48 Triple LynxTriple Lynx OSK-W-20-2133-W2783.6786.02.439131.1Lynx_361 Triple Lynx including784.2784.60.42260100 OSK-W-20-2139-W71081.01083.52.59.53 Triple Lynx Triple Lynx including1081.01081.90.926.1  OSK-W-20-2139-W8543.0545.02.06.68 Triple Lynx Triple Lynx including543.5544.40.914.5  OSK-W-20-2139-W101196.01198.02.011.7 Triple Lynx Triple Lynx including1196.01197.11.121.3  OSK-W-19-2169893.9895.92.05.59 Lynx 4 Lynx including894.7895.30.618.2   1256.31258.42.115.8 Lynx 4 Lynx including1257.51258.40.936.2  OSK-W-20-2170-W61384.01386.42.46.70 Lynx 4Lynx OSK-W-19-217329.031.02.03.07 F11F11 OSK-W-19-2177200.0202.02.03.10 F11F11 OSK-W-20-2197-W2768.7771.42.710.3 Lynx_361 Triple Lynx including769.7770.71.026.0   1045.01047.02.05.66 Lynx 4Lynx OSK-W-20-2217-W2860.0862.02.014.0 Triple Lynx Triple Lynx including860.0860.50.555.6  OSK-W-20-2217-W3830.0832.32.37.53 Lynx_363 Triple Lynx including831.0831.40.426.8   1111.71114.02.316.4 Triple Lynx Triple Lynx including1113.51114.00.566.3  OSK-W-20-2249730.0732.02.05.66 Lynx SW Lynx including730.5730.90.422.8  OSK-W-20-22501002.21005.02.818.115.6Triple Lynx Triple Lynx including1002.21002.50.3123100 OSK-W-20-2250-W11009.01011.12.15.08 Triple LynxTriple Lynx OSK-W-20-2250-W21024.71028.03.328.8 Triple Lynx Triple Lynx including1026.41027.00.663.0  OSK-W-20-2250-W3714.0716.52.514.7 Triple LynxTriple Lynx OSK-W-20-2250-W4727.7734.56.84.58 Triple Lynx Triple Lynx including727.7728.40.710.3  and730.5731.00.512.0   855.4858.02.66.29 Triple Lynx Triple Lynx including857.2858.00.818.6  OSK-W-20-2252-W2812.0814.02.07.64 Triple LynxTriple Lynx  817.2822.04.854.410.4Triple Lynx Triple Lynx including817.2817.50.3804100 OSK-W-20-2252-W3824.3829.75.43.58 Triple LynxTriple Lynx  845.1847.12.04.01 Triple LynxTriple Lynx OSK-W-20-2253387.5389.52.04.30 Caribou CorridorCaribou OSK-W-20-2256870.0872.82.89.81 Triple LynxTriple Lynx OSK-W-20-2256-W2815.0817.02.03.17 Triple LynxTriple Lynx OSK-W-20-2260-W21091.01093.02.06.47 Triple Lynx Triple Lynx including1091.41092.10.718.1   1174.41176.52.19.43 Triple Lynx Triple Lynx including1176.01176.50.528.0  OSK-W-20-226394.096.02.08.58 Bobcat Bobcat including94.095.01.016.9   106.7108.82.16.12 Bobcat Bobcat including108.0108.80.814.1   710.0712.02.042.621.4Lynx SW Lynx including711.2711.60.4206100 OSK-W-20-22661027.41029.52.15.58 Triple Lynx Triple Lynx including1028.71029.00.333.1  OSK-W-20-2266-W1776.8779.22.45.73 Triple Lynx Triple Lynx including778.0779.21.211.1   797.3799.32.03.08 Lynx_364Triple Lynx OSK-W-20-2266-W2717.4719.42.019.9 Lynx_363Triple Lynx OSK-W-20-226750.452.82.415.4 Bobcat Bobcat including51.051.50.546.4  OSK-W-20-2268-W1737.1739.32.27.46 Triple Lynx Triple Lynx including738.3739.00.719.0   819.0821.32.327.4 Triple Lynx Triple Lynx including819.0820.01.045.7   1027.01029.02.06.70 Triple Lynx Triple Lynx including1027.41028.20.816.5  OSK-W-20-2268-W2999.01001.02.05.08 Triple LynxTriple Lynx OSK-W-20-226997.399.52.28.21 Bobcat Bobcat including98.098.40.430.8   518.2520.62.43.37 Lynx SWLynx  886.0888.02.014.0 Lynx SW Lynx including886.5886.80.392.5  OSK-W-20-2271809.6815.25.66.69 Lynx Lynx including814.2815.21.017.4   841.1843.12.018.2 Lynx Lynx including842.1843.11.035.0   877.0879.02.05.36 Lynx Lynx including877.9878.20.327.8  OSK-W-20-2272683.0685.12.113.0 Triple Lynx Triple Lynx including683.0683.90.929.7  OSK-W-20-2273706.7708.72.08.32 Lynx_363 Triple Lynx including706.7707.20.522.4   1013.81017.33.54.78 Triple Lynx Triple Lynx including1015.11015.50.416.1  OSK-W-20-22801013.21016.73.55.23 Triple Lynx Triple Lynx including1013.81014.20.426.7  and1016.41016.70.311.3   1084.71087.02.34.27 Triple LynxTriple Lynx OSK-W-20-2280-W11090.01092.02.011.8 Triple LynxTriple Lynx OSK-W-20-2282308.4310.82.46.13 Bobcat Bobcat including309.0309.50.516.6  OSK-W-20-2283808.0813.45.433.529.0Triple Lynx Triple Lynx including810.8811.30.573.1  and811.7812.00.3182100  819.0821.02.07.27 Triple Lynx Triple Lynx including819.6820.00.424.1   823.2825.52.34.30 Triple Lynx Triple Lynx including823.6824.40.810.6   1001.01003.22.244.823.6Triple Lynx Triple Lynx including1002.71003.20.5194100  1018.01020.02.019.3 Triple Lynx Triple Lynx including1018.91019.50.654.4  OSK-W-20-2288467.0469.82.88.13 Lynx SW Lynx including467.0467.40.438.9  OSK-W-20-2292390.0392.02.07.18 Lynx Lynx including391.7392.00.319.3   835.4837.82.44.47 Triple LynxTriple Lynx  845.0847.02.011.8 Lynx_361 Triple Lynx including845.8846.30.541.0   882.0884.02.08.01 Lynx_364 Triple Lynx including883.0884.01.015.7   1007.21009.22.049.821Lynx_372 Triple Lynx including1008.81009.20.4244100 OSK-W-20-2295651.2658.06.812.4 Triple Lynx Triple Lynx including652.4652.70.328.7  and653.4654.00.645.9  and656.1656.70.656.9   891.7893.72.011.6 Lynx SW Triple Lynx including891.7892.71.023.0  OSK-W-20-2295-W1648.6651.42.845.130.1Triple Lynx Triple Lynx including650.0650.70.7160100 OSK-W-20-2298169.0171.72.77.41 Bobcat Bobcat including169.0169.70.720.2   245.0247.02.06.59 Bobcat Bobcat including245.0245.70.718.4   373.0375.02.016.7 Lynx SW Lynx including373.8374.30.565.2  OSK-W-20-2305630.8635.04.24.47 Triple Lynx Triple Lynx including634.0635.01.09.32   876.0878.32.310.7 Triple Lynx Triple Lynx including877.6878.30.731.6   882.2884.62.443.018.0Triple Lynx Triple Lynx including883.4883.80.4250100 OSK-W-20-2306137.8140.02.24.30 BobcatBobcat  147.1149.42.33.12 BobcatBobcat  275.0277.32.38.58 Bobcat Bobcat including275.8276.50.720.7   386.1388.32.23.94 Lynx SW Lynx including386.6387.00.411.5  OSK-W-20-2307689.6691.92.314275.8Lynx_341 Lynx including690.0690.40.4413100 OSK-W-20-231069.772.02.335.613.8Mallard_5200 Mallard including70.871.10.3267100 OSK-W-20-231285.087.32.37.19 Mallard Mallard including85.786.20.525.4  OSK-W-20-232490.092.52.58.43 MallardMallard WST-20-0135293.0295.12.135.119.2Lynx SW Lynx including293.7294.10.4184100  351.8354.72.93.15 Lynx SW Lynx including351.8352.30.58.55  and354.1354.70.67.76   360.4362.62.213.4 Triple Lynx Triple Lynx including360.4361.41.028.9   397.3399.42.123.614.5Lynx SW Lynx including397.8398.10.3164100 WST-20-0318377.4379.62.28.05 Lynx SWLynx  463.3466.02.79.06 Lynx 4Lynx WST-20-0339199.1202.23.14.57 Lynx HWLynx WST-20-0341A306.1308.22.186.019.9Lynx SW Lynx including306.1306.50.4447100  346.1348.12.010.6 Lynx SW Lynx including347.3347.70.450.2  WST-20-0345361.7363.92.23.75 Caribou corridor Caribou including362.3363.10.89.43  WST-20-0400158.0160.22.211.2 Lynx_301 Lynx including159.0160.21.219.7  WST-20-0411148.2150.42.238.136.1Lynx HW Lynx including149.2149.90.7107100 WST-20-0412155.0157.22.23.06 Lynx_328 Lynx including156.9157.20.311.2  WST-20-0417190.6192.62.022.4 Lynx Lynx including190.6191.20.641.5   428.2430.22.04.06 Lynx 4Lynx WST-20-0423125.0127.02.05.23 Lynx Lynx including125.0125.70.714.9  WST-20-0459204.3206.42.120.6 Lynx SW Lynx including205.9206.40.576.2  WST-20-0462171.0173.02.040.4 Lynx Lynx including171.5172.51.079.1   454.0456.02.03.50 Lynx_336 Lynx including454.0454.80.88.19   638.9643.24.33.82 Lynx Lynx including638.9639.60.712.6  WST-20-047086.288.22.073.815.0Lynx Lynx including87.587.80.3492100 Notes: True widths are estimated at 55 – 80% of the reported core length interval. See "Quality Control and Reporting Protocols" below. SW = Southwest.Drill hole locationHole NumberAzimuth (°)Dip (°)Length (m)UTM EUTM NElevationSection OSK-W-17-1258126-51112845297254352114163275 OSK-W-18-1727331-6181045346154350403963625 OSK-W-19-1857-W11108-58138545352554357044054000 OSK-W-19-2100-W4122-47126045309554357264233650 OSK-W-19-210118-6890945342654347793963475 OSK-W-19-2169130-50126845321554355124103650 OSK-W-19-2173156-4623445218254357224072850 OSK-W-19-2177153-5139645245454359974063225 OSK-W-20-2133-W2118-49113945308054355314173525 OSK-W-20-2139-W7115-52116445298054355494203450 OSK-W-20-2139-W8115-52112545298054355494203450 OSK-W-20-2139-W10115-52121245298054355494203450 OSK-W-20-2170-W6128-59140745342554356574133900 OSK-W-20-2197-W2121-48106445308754355264173550 OSK-W-20-2217-W2134-4889345294454355654183425 OSK-W-20-2217-W3134-48112845294454355654183425 OSK-W-20-2249132-5675945277554351924113100 OSK-W-20-2250132-57106445312954355054193575 OSK-W-20-2250-W1132-57106045312954355054193575 OSK-W-20-2250-W2132-57113445312954355054193575 OSK-W-20-2250-W3132-57117045312954355054193575 OSK-W-20-2250-W4132-57100545312954355054193575 OSK-W-20-2252-W2129-54119445324154356944153750 OSK-W-20-2252-W3129-53106245324154356944153750 OSK-W-20-2253128-5492445283154353264133225 OSK-W-20-2256125-51117945316054356864143675 OSK-W-20-2256-W2125-5195745316054356864143675 OSK-W-20-2260-W2127-48119145320154356674133700 OSK-W-20-2263128-49102945292654351874133225 OSK-W-20-2266128-55105045306754354784183500 OSK-W-20-2266-W1128-55111645306754354784183500 OSK-W-20-2266-W2128-55113145306754354784183500 OSK-W-20-2267135-526645297254352104163275 OSK-W-20-2268-W1127-55107345314854354884183575 OSK-W-20-2268-W2127-55103845314854354884183575 OSK-W-20-2269133-5093345297254352104163275 OSK-W-20-2271120-53124745346254356834103950 OSK-W-20-2272149-45100445296754352654123300 OSK-W-20-2273129-51105945306754354784173500 OSK-W-20-2280127-58116145330454356394153775 OSK-W-20-2280-W1127-58117045330454356394153775 OSK-W-20-2282148-5658845287554351814093175 OSK-W-20-2283135-50115145299754356074253500 OSK-W-20-2288146-5174945287554351814093175 OSK-W-20-2292125-54105945303754355634203525 OSK-W-20-2295132-5198745293854354724153375 OSK-W-20-2295-W1132-5196045293854354724153375 OSK-W-20-2298137-5059645284754350594073100 OSK-W-20-2305124-5591145302654354084133425 OSK-W-20-2306152-5553145287254351554073175 OSK-W-20-2307124-5487845339754355574133825 OSK-W-20-2310333-5114445197054348354072225 OSK-W-20-2312334-5119245196454348164082225 OSK-W-20-2324334-5116745194454348114062200 WST-20-0135187-5844445322654351251343475 WST-20-0318148-5250245322854351271343475 WST-20-0339146-1829545341054352291143675 WST-20-0341A163-4249345322854351261343475 WST-20-0345136-2140145228254349752632575 WST-20-04001671617245349354352871183775 WST-20-04111563817145345054352641183725 WST-20-04121642416545345054352641173725 WST-20-0417138-5075945322854351261343475 WST-20-0423134-1814245335954352091543625 WST-20-0459153-4757945322754351261353475 WST-20-0462152-5368045322754351251343475 WST-20-0470158918445349354352871183775 Lynx Zone Mineralization occurs as grey to translucent quartz-carbonate-pyrite-tourmaline veins and pyrite replacement zones and stockworks. The vein-type is associated with haloes of pervasive sericite-pyrite ± silica alteration and contain sulphides (predominantly pyrite with minor amounts of chalcopyrite, sphalerite, galena, arsenopyrite, and pyrrhotite) and local visible gold. Replacement mineralization is associated with strong pervasive silica-sericite-ankerite ± tourmaline alteration and contains disseminated pyrite from trace to 80% with local visible gold. Pyrite stockworks can form envelopes that reach several tens of metres thick. Fuchsite alteration is common and is spatially constrained to near the gabbros. Mineralization occurs at or near geological contacts between felsic porphyritic or fragmental intrusions and the host rhyolites or gabbros and locally can be hosted along the gabbro-rhyolite contact.Caribou Zone Mineralization most commonly occurs in gold-bearing pyrite stockworks as well as semi-massive pyrite replacement zones associated with phyllic alteration (sericite-pyrite ± silica) with sulphides, pyrite dominated with minor chalcopyrite and sphalerite ranging from trace to up to 20%, and local visible gold. Mineralization is hosted in rhyolites or mafic-intermediate volcanics frequently at or near faults or the contact with felsic porphyritic intrusions.F-Zone Mineralization is hosted in sheared andesites with carbonate replacement or quartz veining and occurs as quartz ± ankerite veinlets or in shear zones as replacement, characterised by trace to 10% pyrite with local visible gold. Alteration is dominated by sericite-fuchsite-tourmaline-pyrite.Bobcat Mineralization most commonly occurs in gold-bearing quartz-pyrite veins controlled by northeast trending faults and shears and to a lesser extent in minor crustiform quartz-tourmaline-ankerite-pyrite veins and pyrite replacement zones and stockwork. Mineralization is hosted in sheared mafic volcanics, rhyolites near faults, or at the contact with felsic porphyritic intrusions.Mallard Mineralization is hosted in sheared mafic volcanics with felsic porphyritic intrusions and occurs as veins associated with sericite-pyrite ± silica ± chlorite alteration and contains pyrite ranging from trace to 30% and local visible gold.Qualified Person The scientific and technical content of this news release has been reviewed, prepared and approved by Mr. Louis Grenier, M.Sc.A., P.Geo. (OGQ 800), Project Manager of Osisko's 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 width determination is estimated at 55-80% of the reported core length interval for the zone. Assays are uncut except where indicated. Intercepts occur within geological confines of major zones but have not been correlated to individual vein domains at this time. Reported intervals include minimum weighted averages of 3.0 g/t Au diluted over core lengths of at least 2.0 metres. All NQ core assays reported were obtained by either 1-kilogram screen fire assay or standard 50-gram fire-assaying-AA finish or gravimetric finish at (i) ALS Laboratories in Val d'Or, Québec, Thunder Bay, Ontario, Sudbury, Ontario or Vancouver, British Colombia, or (ii) Bureau Veritas in Timmins, Ontario. The 1-kilogram screen assay method is selected by the geologist when samples contain coarse gold or present a higher percentage of pyrite than surrounding intervals. Selected 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 ("QA/QC") 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 assay.About the Windfall Gold Deposit The Windfall gold deposit is located between Val-d'Or and Chibougamau in Eeyou Istchee James Bay, Québec, Canada. The mineral resource defined by Osisko, as disclosed in the news release dated February 19, 2020 and supported by the technical report entitled “An updated mineral resource estimate for the Windfall Lake Project, Located in the Abitibi Greenstone Belt, Urban Township, Eeyou Istchee James Bay, Québec, Canada” and dated April 3, 2020 (with an effective date of January 3, 2020), and assuming a cut-off grade of 3.5 g/t, comprises 4,127,000 tonnes at 9.1 g/t Au (1,206,000 ounces) in the indicated mineral resource category and 14,532,000 tonnes at 8.40 g/t Au (3,938,000 ounces) in the inferred mineral resource category. The key assumptions, parameters and methods used to estimate the mineral resource estimate disclosed in the February 19,2020 news release are further described in the full technical report prepared by Micon International Limited ("Micon") and BBA Inc ("BBA"), in accordance with NI 43-101 available on SEDAR (www.sedar.com) under the Corporation's issuer profile. The Windfall gold deposit is currently one of the highest-grade resource-stage gold projects in Canada and has world-class scale. Mineralization occurs in three principal zones: Lynx, Main Zone, and Underdog. Mineralization is generally comprised of deformed sub-vertical zones plunging to the northeast. Vein-type or pyrite replacement-type styles of mineralization crosscut syn-volcanic host rocks and syn-deformation felsic porphyry intrusions and are spatially associated with the contacts of the intrusions. The deposit is well defined from surface to a depth of 1,200 metres and remains open along strike and at depth. Mineralization has been identified 30 metres from surface in some areas and as deep as 2,000 metres in others, with significant potential to extend mineralization 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% interest in the high-grade Windfall gold deposit located between Val-d'Or and Chibougamau in Québec and holds a 100% undivided interest in a large area of claims in the surrounding Urban Barry area and nearby Quévillon area (over 2,700 square kilometres).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. Any statement that involves 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", "management's view", "anticipates" or "does not anticipate", "plans", "budget", "scheduled", "forecasts", "estimates", "potential", "feasibility", "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 news release contains the forward-looking information pertaining to, among other things: the Windfall gold deposit being one of the highest-grade resource-stage gold projects in Canada and having world-class scale; the key assumptions, parameters and methods used to estimate the mineral resource estimate; the prospects, if any, of the Windfall gold deposit; the timing and ability of Osisko, if at all, to publish a feasibility study for the Windfall gold deposit; the projected capital expenditures of mining activities at the Windfall gold deposit; upgrading an inferred mineral resource to a measured mineral resource or indicated mineral resource category; future drilling at the Windfall gold deposit; the deposit remaining open along strike to the northeast and at depth; significant high-grade zones (Lynx 4, Triple Lynx) remaining open down plunge; the plunge potential of the Lynx and Underdog zones; the significance of historic exploration activities and results. Such factors include, among others, risks relating to the ability of exploration activities (including drill results) to accurately predict mineralization; errors in management's geological modelling; the ability of Osisko to complete further exploration activities, including drilling; property and royalty interests in the Windfall gold deposit; the ability of the Corporation to obtain required approvals; 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.CONTACT INFORMATION: John Burzynski Chief Executive Officer Telephone (416) 363-8653