Osisko Drilling Returns 632 g/t Au Over 5.3 Metres in Lynx

1,096 g/t Au over 2.7 metres in Caribou

TORONTO, Sept. 23, 2021 (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.

Significant new analytical results presented below include 87 intercepts in 21 drill holes (10 from surface, 11 from underground) and 20 wedges. The infill intercepts are located inside defined February 2021 mineral resource estimate (“MRE”) blocks (see Osisko news release dated February 17, 2021). The expansion intercepts are located outside the February 2021 MRE blocks and either expand resource wireframes or are in a defined zone or corridor but do not yet correlate to a specific wireframe.

Osisko Chief Executive Officer John Burzynski commented: “Today’s results once again underscore the impressive high-grade nature of the Windfall system, especially in the Lynx. Infill drilling has gone very well throughout this drill campaign and expansion holes, like today’s impressive result from Caribou of over a kilogram of gold, highlight the strong near resource growth potential.”

Selected high-grade intercepts include: 632 g/t Au over 5.3 metres in OSK-W-21-1432-W6; 1,096 g/t Au over 2.7 metres in OSK-W-21-2549; 60.4 g/t Au over 3.4 metres in WST-21-0851A; 79.3 g/t Au over 2.5 metres in WST-21-0871; 92.9 g/t Au over 2.0 metres in WST-21-0741; 89.0 g/t Au over 2.0 metres in OSK-W-21-2531-W2; 78.4 g/t Au over 4.2 metres, 57.7 g/t Au over 3.0 metres, and 53.3 g/t Au over 2.8 metres in WST-21-0872; and 37.2 g/t Au over 3.9 metres in OSK-W-21-2555. Maps showing hole locations and full analytical results are available at www.osiskomining.com.

Infill Drilling

Hole No.	From (m)	To (m)	Interval (m)	Au (g/t) uncut	Au (g/t) cut to 100 g/t	Zone	Corridor
OSK-W-21-1432-W6	960.7	962.9	2.2	16.4		LX4_3437	Lynx 4
including	961.4	962.2	0.8	41.8
	970.9	976.2	5.3	632	42.7	LX4_3430	Lynx 4
including	973.3	974.3	1.0	1355	100
and	974.3	974.9	0.6	3210	100
OSK-W-21-1827-W6	886.0	888.0	2.0	9.88		UDD_4100	Underdog
including	886.5	886.8	0.3	46.8
	980.0	982.2	2.2	6.54		UDD_4511	Underdog
including	980.7	981.0	0.3	39.7
OSK-W-21-1882-W6	743.9	746.0	2.1	4.12		UDD_4121	Underdog
	807.9	810.0	2.1	12.2		UDD_4120	Underdog
including	807.9	808.4	0.5	47.9
	920.0	922.0	2.0	5.02		UDD_4515	Underdog
including	920.3	920.6	0.3	30.6
	947.0	949.0	2.0	6.16		UDD_4511	Underdog
including	947.7	948.0	0.3	34.4
	956.0	958.0	2.0	4.97		UDD_4510	Underdog
including	957.7	958.0	0.3	13.0
OSK-W-21-1949-W8	746.0	748.0	2.0	10.7		LXM_3345	Lynx
	1065.0	1067.0	2.0	5.90		LX4_3430	Lynx 4
OSK-W-21-2287-W6	1323.3	1325.4	2.1	19.7		LX4_3445	Lynx 4
including	1323.7	1324.2	0.5	47.9
	1330.0	1334.0	4.0	4.49		LX4_3445	Lynx 4
OSK-W-21-2416-W6	926.3	928.6	2.3	18.5		TLX_3161	Triple Lynx
including	926.6	926.9	0.3	49.7
	940.0	942.0	2.0	20.1		TLX_3183	Triple Lynx
	949.0	951.0	2.0	11.4		TLX_3183	Triple Lynx
	970.0	972.2	2.2	4.21		TLX_3163	Triple Lynx
OSK-W-21-2479-W9	635.9	638.4	2.5	6.43		UDD_4101	Underdog
	660.0	662.0	2.0	21.7	20.8	UDD_4102	Underdog
including	661.1	661.5	0.4	105	100
	672.0	674.0	2.0	6.82		UDD_4104	Underdog
OSK-W-21-2503-W3	1026.6	1028.7	2.1	5.13		TLX_3155	Lynx HW
OSK-W-21-2531-W2	893.5	896.7	3.2	6.29		UDD_4101	Underdog
including	896.4	896.7	0.3	18.8
	942.9	944.9	2.0	15.1		UDD_4100	Underdog
including	944.5	944.9	0.4	63.3
	950.8	952.9	2.1	15.4		UDD_4102	Underdog
including	951.1	951.4	0.3	46.4
	964.2	966.2	2.0	89.0	51.8	UDD_4102	Underdog
including	964.2	965.2	1.0	175	100
	1054.0	1056.0	2.0	25.8	16.9	UDD_4511	Underdog
including	1055.7	1056.0	0.3	160	100
	1060.2	1064.8	4.6	5.81		UDD_4511	Underdog
including	1060.2	1061.0	0.8	21.8
	1131.6	1134.0	2.4	3.62		UDD_4513	Underdog
including	1131.6	1131.9	0.3	18.9
	1083.7	1087.8	4.1	4.87		UDD_4514	Underdog
including	1083.7	1084.1	0.4	24.4
OSK-W-21-2537-W2	905.0	907.1	2.1	16.6		TLX_3161	Triple Lynx
including	906.3	906.7	0.4	69.7
	919.1	921.4	2.3	16.7		TLX_3161	Triple Lynx
including	919.8	920.3	0.5	46.6
	943.5	945.7	2.2	30.3		TLX_3163	Triple Lynx
including	945.0	945.7	0.7	92.1
	999.0	1001.0	2.0	48.9	17.5	TLX_3169	Triple Lynx
including	1000.0	1000.3	0.3	309	100
OSK-W-21-2548	692.0	694.0	2.0	4.43		CA2_2212	Caribou
including	692.3	692.7	0.4	21.4
OSK-W-21-2548-W2	714.0	716.2	2.2	14.9		CA2_2220	Caribou
including	715.2	715.6	0.4	77.1
OSK-W-21-2551-W2	854.0	856.2	2.2	4.76		LX4_3414	Lynx 4
OSK-W-21-2555	647.5	651.4	3.9	37.2		CA2_2233	Caribou
OSK-W-21-2564	734.0	736.0	2.0	27.0		TLX_3171	Triple Lynx
including	735.1	735.5	0.4	97.2
OSK-W-21-2571	545.0	547.2	2.2	4.56		CA2_2232	Caribou
	555.4	557.6	2.2	3.79		CA2_2232	Caribou
	568.2	570.8	2.6	14.1		CA2_2211	Caribou
including	570.0	570.8	0.8	34.7
OSK-W-21-2575	644.2	648.4	4.2	13.5		CA2_2241	Caribou
including	647.6	648.4	0.8	58.9
OSK-W-21-2580	87.0	89.3	2.3	4.71		F51_6008	F-51
including	87.8	88.5	0.7	13.5
OSK-W-21-2582	118.7	121.0	2.3	16.3		F51_6008	F-51
including	120.0	121.0	1.0	29.0
WST-21-0741	124.0	126.0	2.0	92.9	35.5	LXM_3304	Lynx
including	124.4	125.1	0.7	264	100
WST-21-0839	315.8	318.0	2.2	11.2		TLX_3168	Triple Lynx
including	315.8	316.8	1.0	24.0
WST-21-0843	105.0	107.0	2.0	9.18		LXM_3304	Lynx
including	105.0	105.9	0.9	18.7
WST-21-0851A	492.2	495.6	3.4	60.4	48.6	LX4_3430	Lynx 4
including	494.9	495.6	0.7	157	100
WST-21-0852A	587.4	589.9	2.5	21.5		LX4_3427	Lynx 4
including	588.9	589.5	0.6	43.3
WST-21-0854A	631.9	634.0	2.1	28.4		LX4_3448	Lynx 4
including	631.9	632.9	1.0	59.5
	638.6	641.0	2.4	4.24		LX4_3448	Lynx 4
including	638.6	639.0	0.4	15.7
WST-21-0858A	511.6	513.6	2.0	3.86		LX4_3430	Lynx 4
WST-21-0871	536.5	539.0	2.5	79.3	30.1	LX4_3450	Lynx 4
including	536.5	537.1	0.6	305	100
WST-21-0872	278.0	280.8	2.8	53.3	39.9	TLX_3161	Triple Lynx
including	279.7	280.3	0.6	163	100
	294.0	297.0	3.0	57.7	40.1	TLX_3161	Triple Lynx
including	294.5	295.2	0.7	176	100
WST-21-0873	459.0	461.0	2.0	58.1	31.3	LSW_3502	Lynx SW
including	459.6	460.2	0.6	190	100

Notes: True widths are estimated at 55 – 80% of the reported core length interval. See "Quality Control and Reporting Protocols" below., LXM = Lynx Main, LX4 = Lynx 4, LSW = Lynx Southwest, TLX = Triple Lynx, UDD = Underdog, and CA2 = Caribou.

Expansion Drilling

Hole No.	From (m)	To (m)	Interval (m)	Au (g/t) uncut	Au (g/t) cut to 100 g/t	Zone	Corridor
OSK-W-21-1827-W5	801.2	803.7	2.5	5.03		Underdog	Underdog
	969.6	972.0	2.4	9.72		Underdog	Underdog
including	969.6	969.9	0.3	73.6
OSK-W-21-1827-W6	1044.6	1046.7	2.1	4.98		UDD	Underdog
including	1045.7	1046.0	0.3	32.3
	1236.0	1239.0	3.0	6.46		UDD_4508	Underdog
including	1238.6	1239.0	0.4	30.0
OSK-W-21-1871-W1	456.0	458.1	2.1	5.00		Caribou	Caribou
OSK-W-21-1882-W6	764.1	766.5	2.4	4.32		Underdog	Underdog
including	764.1	764.4	0.3	33.8
	939.0	941.0	2.0	4.09		Underdog	Underdog
OSK-W-21-2287-W5	1167.9	1172.8	4.9	16.7		LX4	Lynx 4
OSK-W-21-2287-W6	1163.8	1166.0	2.2	4.43		LX4_3446	Lynx 4
including	1164.4	1165.0	0.6	15.1
OSK-W-21-2465-W1	756.6	759.0	2.4	16.5	16.1	Lynx	Lynx
including	757.8	758.1	0.3	103	100
OSK-W-21-2479-W6	475.0	477.3	2.3	6.29		Z27	Zone 27
including	475.4	476.2	0.8	14.9
OSK-W-21-2503-W5	892.0	894.0	2.0	11.3		TLX	Triple Lynx
including	893.0	894.0	1.0	22.1
	1089.0	1091.0	2.0	4.38		TLX	Triple Lynx
	1148.0	1150.1	2.1	4.73		TLX	Triple Lynx
OSK-W-21-2531-W1	1051.8	1054.0	2.2	4.08		Underdog	Underdog
including	1052.4	1052.7	0.3	12.7
OSK-W-21-2532-W3	529.0	532.3	3.3	34.6	26.9	Caribou	Caribou
including	531.8	532.3	0.5	151	100
OSK-W-21-2537-W2	986.0	988.2	2.2	3.93		Triple Lynx	Triple Lynx
OSK-W-21-2548	708.0	710.3	2.3	5.78		Caribou	Caribou
including	709.7	710.0	0.3	37.4
OSK-W-21-2548-W2	722.0	724.0	2.0	4.83		Caribou	Caribou
including	722.4	722.8	0.4	23.2
	731.0	733.0	2.0	3.90		Caribou	Caribou
OSK-W-21-2549	421.1	423.8	2.7	1096	12.9	Caribou	Caribou
including	423.5	423.8	0.3	9850	100
OSK-W-21-2555	606.9	609.0	2.1	11.1		Caribou	Caribou
including	606.9	607.6	0.7	31.9
OSK-W-21-2565	565.7	572.2	6.5	4.67		Caribou	Caribou
OSK-W-21-2571	574.9	577.0	2.1	6.10		CA2_2223	Caribou
	581.4	584.7	3.3	3.82		Caribou	Caribou
including	584.2	584.7	0.5	16.6
OSK-W-21-2572	555.0	557.0	2.0	3.92		TLX	Triple Lynx
WST-21-0862A	90.7	95.3	4.6	4.85		BCT	Bobcat
	147.0	149.0	2.0	5.11		LSW	Lynx SW
including	147.6	147.9	0.3	33.8
WST-21-0872	312.7	316.9	4.2	78.4	61.1	TLX_3163	Triple Lynx
including	313.7	314.1	0.4	224	100
	324.0	326.0	2.0	23.5		Triple Lynx	Triple Lynx
WST-21-0873	401.0	403.0	2.0	36.0	30.9	LSW	Lynx SW
including	401.0	401.6	0.6	117	100

Notes: True widths are estimated at 55 – 80% of the reported core length interval. See "Quality Control and Reporting Protocols" below. LX4 = Lynx 4, LSW = Lynx Southwest, TLX = Triple Lynx, UDD = Underdog, CA2 = Caribou, and BCT = Bobcat.

Drill hole location

Hole Number	Azimuth (°)	Dip (°)	Length (m)	UTM E	UTM N	Elevation	Section
OSK-W-21-1432-W6	132	-55	1065	453811	5435779	400	4300
OSK-W-21-1827-W5	331	-58	1203	452506	5434390	403	2475
OSK-W-21-1827-W6	331	-58	1281	452506	5434390	403	2475
OSK-W-21-1871-W1	331	-56	612	452496	5434397	402	2475
OSK-W-21-1882-W6	328	-58	1062	452469	5434405	400	2450
OSK-W-21-1949-W8	105	-57	1284	453440	5435479	401	3825
OSK-W-21-2287-W5	116	-53	1380	453607	5435714	404	4075
OSK-W-21-2287-W6	116	-53	1443	453607	5435714	404	4075
OSK-W-21-2416-W6	123	-54	990	453169	5435624	412	3650
OSK-W-21-2465-W1	123	-61	1036	453398	5435556	413	3825
OSK-W-21-2479-W6	344	-55	1014	452315	5434419	399	2325
OSK-W-21-2479-W9	344	-55	768	452315	5434419	399	2325
OSK-W-21-2503-W3	126	-58	1257	453333	5435641	413	3800
OSK-W-21-2503-W5	126	-58	1211	453333	5435641	413	3800
OSK-W-21-2531-W1	344	-62	1215	452566	5434415	403	2550
OSK-W-21-2531-W2	344	-62	1179	452566	5434415	403	2550
OSK-W-21-2532-W3	341	-60	1082	452480	5434428	401	2475
OSK-W-21-2537-W2	114	-54	1067	452981	5435549	420	3450
OSK-W-21-2548	331	-57	774	452829	5434550	398	2850
OSK-W-21-2548-W2	331	-57	801	452829	5434550	398	2850
OSK-W-21-2549	332	-58	723	452703	5434455	401	2675
OSK-W-21-2551-W2	120	-55	942	453622	5435635	405	4050
OSK-W-21-2555	329	-59	741	452728	5434472	401	2700
OSK-W-21-2564	132	-50	1002	452960	5435539	419	3425
OSK-W-21-2565	136	-57	717	452768	5435312	406	3150
OSK-W-21-2571	330	-56	708	452686	5434505	403	2700
OSK-W-21-2572	146	-50	777	452886	5435484	409	3350
OSK-W-21-2575	332	-58	690	452682	5434351	402	2625
OSK-W-21-2580	151	-59	138	453334	5435783	407	3875
OSK-W-21-2582	150	-52	159	453335	5435822	406	3900
WST-21-0741	178	-25	156	453507	5435326	-6	3800
WST-21-0839	140	-38	577	453321	5435235	55	3600
WST-21-0843	127	-34	115	453315	5435165	124	3575
WST-21-0851A	123	-40	618	453507	5435332	-48	3800
WST-21-0852A	141	-43	709	453321	5435236	54	3600
WST-21-0854A	134	-41	724	453374	5435296	-26	3675
WST-21-0858A	118	-41	643	453507	5435332	-48	3800
WST-21-0862A	151	-56	154	452954	5435003	252	3175
WST-21-0871	140	-50	582	453321	5435236	54	3600
WST-21-0872	135	-69	348	453508	5435327	-7	3800
WST-21-0873	152	-61	507	453105	5435065	231	3325

Zone 27
Mineralization most commonly occurs as replacement-type characterized by 5% to 50% disseminated, stringer, semi-massive or stockwork pyrite, ptygmatic tourmaline veins, quartz-tourmaline crustiform veins, local quartz-carbonate veins, and local visible gold. Mineralization is associated with moderate to strong sericite, weak to strong silica, weak chlorite and carbonate and locally weak fuchsite and is hosted in strongly altered andesites, in or at the contact of the rhyolite, or along the contacts with felsic porphyritic intrusions.

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.

Underdog
Mineralization most commonly occurs in gold-bearing quartz-pyrite (± tourmaline) veins and as disseminated, stringer, semi-massive to massive pyrite with minor sphalerite, chalcopyrite and molybdenite associated with strong sericite and silica alteration. Mineralization is hosted along the intrusive contacts of a three-phase composite felsic porphyritic unit which cross-cuts felsic and mafic volcanic sequences.

Lynx Zone
Mineralization occurs as grey to translucent quartz-carbonate-pyrite-tourmaline veins and pyrite replacement zones and stockworks. Vein-type mineralization 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.

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.

F-Zones
Mineralization is hosted in sheared andesites with carbonate replacement or quartz veining and occurs as quartz ± ankerite veinlets or as replacement type in shear zones and is characterised by trace to 10% pyrite with local visible gold. Alteration is dominated by sericite-fuchsite-tourmaline-pyrite.

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), Director of Exploration for Osisko's Windfall 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 3.5 g/t Au diluted over core lengths of at least 2.0 metres. NQ core assays 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, Vancouver, British Colombia, Lima, Peru or Vientiane, Laos (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 a Four Acid Digestion-ICP-MS 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 the Abitibi region of Québec, Canada. The Mineral Resource Estimate (“MRE“) defined by Osisko, as disclosed in the news release dated February 17, 2021 is supported by the technical report entitled “Preliminary Economic Assessment Update for the Windfall Project” dated April 26, 2021 (that includes Windfall Mineral Resource Estimate with an effective date of November 30, 2020), and assuming a cut-off grade of 3.50 g/t Au, comprises 521,000 tonnes at 11.3 g/t Au (189,000 ounces) in the measured mineral resource category, 5,502,000 tonnes at 9.4 g/t Au (1,668,000 ounces) in the indicated mineral resource category and 16,401,000 tonnes at 8.0 g/t Au (4,244,000 ounces) in the inferred mineral resource category. The key assumptions, parameters and methods used to estimate the mineral resource estimate disclosed in the February 17, 2021 news release are further described in the full technical report prepared by BBA Inc. in accordance with NI 43-101 and is 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 sub-vertical zones following intrusive porphyry contacts plunging to the northeast. The resources are defined from surface to a depth of 1,600 metres as it now includes the Triple 8 (T8) zone. The resources excluding T8 are defined from surface to a depth of 1,200 metres. The deposit remains open along strike and at depth. Mineralization has been identified at surface in some areas and as deep as 2,625 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 gold 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 disclosed in this news release; the prospects, if any, of the Windfall gold deposit; timing and ability of Osisko to file a technical report for the mineral resource estimate disclosed in this news release; the timing and ability of Osisko, if at all, to publish a feasibility study for the Windfall gold deposit; the amount and type of drilling to be completed and the timing to complete such drilling; the focus of the remaining infill drilling; the trend of grade increase; the Lynx zone remaining open to expansion down plunge; upgrading a inferred mineral resource to a measured mineral resource or indicated mineral resource category; future drilling at the Windfall gold deposit; 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 (infill) 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