Osisko Intersects 592 Metres Averaging 0.33% Cu at Gaspé Southern Expansion Hole Hits 46 Metres Averaging 1.10% Cu
Osisko Intersects 592 Metres Averaging 0.33% Cu at Gaspé
Southern Expansion Hole Hits 46 Metres Averaging 1.10% Cu
MONTREAL, Oct. 29, 2025 -- Osisko Metals Incorporated (the “ Company" or " Osisko Metals") (TSX: OM; OTCQX: OMZNF;
FRANKFURT: 0B51) is pleased to announce new drill results from the Gaspé Copper Project, located in the Gaspé Peninsula
of Eastern Québec.
Osisko Metals CEO Robert Wares commented: “These latest results continue to confirm and expand our resource model with
several long continuous intersections of copper and molybdenum mineralization in the core of the deposit. The new drilling
keeps deepening the deposit and again confirms its southern extension with holes 30-1119 and 30-1124. We are excited
about the growth of our project, especially within the context of a fundamental rising metal market where copper spot price is
rapidly approaching US$5/lb, silver is at US$47/oz and molybdenum is holding steady at over US$30/lb.”
New analytical results are presented below (see Table 1), including 33 mineralized intercepts from nine new drill holes. Infill
intercepts are located inside the 2024 MRE model ( see November 14, 2024 news release ), and are focused on upgrading
inferred mineral resources to measured or indicated categories, as applicable. Expansion intercepts are located outside the
2024 MRE model and may potentially lead to additional resources that will be classified appropriately within the next MRE
update. Some of the reported intercepts have contiguous shallower infill as well as deeper expansion (noted on Table 1 below
as “Both”). Maps showing hole locations are available at www.osiskometals.com .
Highlights:
• Drill hole 30-1107
• 592.0 metres averaging 0.33% Cu (0.46 CuEq) (infill and expansion)
• Drill hole 30-1112
• 868.5 metres averaging 0.23% Cu (0.30 CuEq) (infill and expansion)
• Drill hole 30-1114
• 142.1 metres averaging 0.39% Cu (0.47 CuEq) (expansion)
• Drill hole 30-1116
• 565.5 metres averaging 0.22% Cu (0.29 CuEq) (infill and expansion)
• Drill hole 30-1119
• 46.4 metres averaging 1.10% Cu (1.25 CuEq) (expansion)
• Drill hole 30-1122
• 760.5 metres averaging 0.24% Cu (0.30 CuEq) (infill and expansion)
• Drill hole 30-1124
• 200.5 metres averaging 0.32% Cu (0.37 CuEq) (expansion)
• 203.2 metres averaging 0.37% Cu (0.39 CuEq) (expansion)
Table 1: Infill and Expansion Drilling Results
DDH No. From (m) To (m) Length (m) Cu % Ag g/t Mo % CuEq* Type**
30-1107 8.3 133.0 124.7 0.20 1.71 <0.005 0.21 Infill
And 166.5 360.0 193.5 0.16 1.35 <0.005 0.18 Infill
And 411.0 1003.0 592.0 0.33 1.68 0.032 0.46 Both
(including) 411.0 666.4 255.4 0.32 1.78 0.030 0.45 Infill
(including) 666.4 1003.0 336.6 0.33 1.60 0.033 0.46 Expansion
And 1043.7 1076.2 32.5 0.18 1.55 0.044 0.35 Expansion
30-1112 133.5 205.5 72.0 0.13 1.29 0.006 0.16 Infill
And 250.5 1119.0 868.5 0.23 1.45 0.019 0.30 Both
(including) 250.5 702.0 451.5 0.24 1.50 0.014 0.30 Infill
(including) 702.0 1119.0 417.0 0.21 1.40 0.024 0.31 Expansion
30-1113 62.0 90.0 28.0 0.19 0.85 <0.005 0.19 Infill
And 147.0 186.0 39.0 0.15 0.68 <0.005 0.15 Infill
And 501.0 543.0 42.0 0.47 2.14 0.026 0.58 Infill
And 743.0 769.0 26.0 0.16 1.89 0.013 0.22 Expansion
30-1114 2.5 56.0 53.5 0.25 2.80 <0.005 2.80 Infill
And 121.5 145.5 24.0 0.19 2.01 <0.005 0.21 Infill
And 607.5 633.0 25.5 0.68 6.52 0.158 1.32 Infill
And 808.5 950.6 142.1 0.39 1.50 0.019 0.47 Expansion
30-1116 55.0 157.0 102.0 0.25 2.11 <0.005 0.27 Infill
And 205.5 771.0 565.5 0.22 1.86 0.017 0.29 Both
(including) 205.5 674.7 469.2 0.22 2.02 0.016 0.29 Infill
(including) 674.7 771.0 96.3 0.21 1.07 0.020 0.30 Expansion
And 802.5 840.0 37.5 0.15 1.12 0.036 0.29 Expansion
And 886.0 993.0 107.0 0.22 0.94 0.023 0.31 Expansion
And 1016.8 1050.0 33.2 0.30 2.01 0.012 0.35 Expansion
And 1084.7 1110.3 25.6 0.25 1.45 0.022 0.34 Expansion
30-1119 28.0 165.0 137.0 0.33 2.56 <0.005 0.34 Infill
And 195.2 211.5 16.3 0.51 3.24 <0.005 0.53 Expansion
And 253.6 307.5 53.9 0.25 2.54 0.023 0.35 Expansion
And 421.6 468.0 46.4 1.10 5.08 0.032 1.25 Expansion
(including) 454.0 461.5 7.5 5.35 18.2 0.165 6.08 Expansion
And 490.5 519.0 28.5 0.61 2.91 <0.005 0.63 Expansion
30-1121 No significant results
30-1122 46.0 129.0 83.0 0.19 1.97 <0.005 0.20 Infill
And 154.5 174.0 19.5 0.14 1.75 <0.005 0.16 Infill
And 376.5 1137.0 760.5 0.24 1.71 0.015 0.30 Both
(including) 376.5 680.9 304.4 0.23 1.64 0.017 0.30 Infill
(including) 680.9 1137.0 456.1 0.24 2.82 0.014 0.31 Expansion
30-1124 14.0 69.0 55.0 0.19 1.90 <0.005 0.20 Expansion
And 92.0 292.5 200.5 0.32 2.43 0.009 0.37 Expansion
And 416.3 619.5 203.2 0.37 2.81 <0.005 0.39 Expansion
* See explanatory notes below on copper equivalent values and Quality Assurance/Quality Controls.
** “Both” indicates drill holes that have contiguous shallower infill as well as deeper expansion intercepts.
Discussion
Drill hole 30-1107, located on top of Copper Mountain near the center of the 2024 MRE model, cut three mineralized intervals
including 592.0 metres averaging 0.33 % Cu, 1.68 g/t Ag and 0.032% Mo (which includes 336.6 metres of depth expansion),
extending mineralization in this area to a vertical depth of 1003 metres.
Drill hole 30-1112, located on the western flank of Copper Mountain, cut two mineralized intervals including 868.5 metres
averaging 0.23 % Cu, 1.45 g/t Ag and 0.019% Mo (which includes 417.0 metres of depth expansion), extending mineralization
in this area to a vertical depth of 1119 metres.
Drill hole 30-1113, located on the western margin of the 2024 MRE model, cut multiple intersections of mineralization, 26 to 42
metres thick and distributed in “layer cake” fashion from surface to a vertical depth of 769 metres, confirming the current limit
of the 2024 MRE model at this location.
Drill hole 30-1114, located near the eastern margin of the 2024 MRE model, cut multiple intersections of mineralization
distributed in “layer cake” fashion from surface to a vertical depth of 950 metres, including 142.1 metres averaging 0.39 % Cu,
1.50 g/t Ag and 0.019% Mo (expansion).
Drill hole 30-1116, located on top of Copper Mountain near the center of the 2024 MRE model, cut six mineralized intervals
including 565.5 metres averaging 0.22 % Cu, 1.86 g/t Ag and 0.017% Mo (which includes 96.3 metres of depth expansion),
extending mineralization in this area to a vertical depth of 1110 metres.
Drill holes 30-1119 and 30-1124, both located immediately south of the southern margin of the 2024 MRE model, cut multiple
intersections of mineralization, including 46.4 metres averaging 1.10 % Cu, 5.08 g/t Ag and 0.032% Mo near and including the
E Zone skarn horizon (30-1119) and 203.2 metres averaging 0.37% Cu and 2.81 g/t Ag (30-1124). These intersections extend
mineralization to a vertical depth of 619 metres within the southern expansion of the deposit, which remains open towards
Needle Mountain East.
Drill hole 30-1121, located 50 metres east of the 2024 MRE model, did not intersect significant mineralization as expected,
once again confirming the current eastern limit of the resource model.
Drill hole 30-1122, located on the western flank of Copper Mountain, intersected three mineralized intervals, including 760.5
metres averaging 0.24% Cu, 1.71 g/t Ag and 0.015% Mo (which includes 456.1 metres of depth expansion), extending
mineralization in this area to a vertical depth of 1137 metres.
Mineralization at Gaspé Copper is of porphyry copper/skarn type and occurs as disseminations and stockworks of
chalcopyrite with pyrite or pyrrhotite and minor bornite and molybdenite. One prograde and at least five retrograde
vein/stockwork mineralizing events have been recognized at Copper Mountain, which overprint earlier, bedding replacement
skarn and porcellanite-hosted mineralization throughout the Gaspé Copper system. Porcellanite is a historical mining term
used to describe bleached, pale green to white potassic-altered hornfels. Subvertical stockwork mineralization dominates at
Copper Mountain whereas prograde bedding-parallel mineralization, that is mostly stratigraphically controlled, dominates in the
area of lower Copper Mountain, Needle Mountain, Needle East, and Copper Brook. High molybdenum grades (up to 0.5% Mo)
were locally obtained in both the C Zone and E Zone skarns away from Copper Mountain.
The 2022 to 2024 Osisko Metals drill programs were focused on defining open-pit resources within the Copper Mountain
stockwork mineralization ( see May 6, 2024 MRE press release). Extending the resource model south of Copper Mountain into
the poorly-drilled prograde skarn/porcellanite portion of the system subsequently led to a significantly increased resource,
mostly in the Inferred category (see November 14, 2024 MRE press release).
The current drill program is designed to convert the November 2024 MRE to Measured and Indicated categories, as well as
test the expansion of the system deeper into the stratigraphy and laterally to the south and southwest towards Needle East
and Needle Mountain respectively. The November 2024 MRE was limited at depth to the base of the L1 skarn horizon (C
Zone), and all mineralized intersections below this horizon represent potential depth extensions to the deposit, to be included
in the next scheduled MRE update in Q1 2026.
All holes are being drilled sub-vertically into the altered calcareous stratigraphy which dips 20 to 25 degrees to the north. The
L1 (C Zone) the L2 (E Zone) skarn/marble horizons were intersected in most holes, as well as intervening porcellanites that
host the bulk of the disseminated copper mineralization.
Table 2: Drill hole locations
DDH No. Azimuth (°) Dip (°) Length (m) UTM E UTM N Elevation
30-1107 0.0 -90.0 1089.0 316191.0 5426207.0 739.3
30-1112 65.0 -88.0 1149.0 315863.0 5426398.0 700.0
30-1113 0.0 -90.0 999.0 315400.0 5426334.0 592.5
30-1114 0.0 -90.0 1071.0 316500.0 5426260.0 641.6
30-1116 0.0 -90.0 1152.0 316283.0 5426222.9 728.1
30-1119 230.0 -85.0 711.0 316190.0 5425725.0 561.2
30-1121 0.0 -90.0 873.0 316679.0 5425914.0 596.4
30-1122 0.0 -90.0 1152.0 315900.0 5426327.0 695.7
30-1124 0.0 -90.0 642.0 316215.0 5425601.0 560.0
Explanatory note regarding copper-equivalent grades
Copper Equivalent grades are expressed for purposes of simplicity and are calculated taking into account: 1) metal grades; 2)
estimated long-term prices of metals: US$4.25/lb copper, $20.00/lb molybdenum, and US$24/oz silver; 3) estimated
recoveries of 92%, 70%, and 70% for Cu, Mo, and Ag respectively; and 4) net smelter return value of metals as percentage of
the price, estimated at 86.5%, 90.7%, and 75.0% for Cu, Mo, and Ag respectively.
Qualified Person
The scientific and technical content of this news release has been reviewed and approved by Mr. Bernard-Olivier Martel, P.
Geo. (OGQ 492), an independent “qualified person” as defined by National Instrument 43-101 – Standards of Disclosure for
Mineral Projects (“NI 43-101”).
Quality Assurance / Quality Control
Mineralized intervals reported herein are calculated using an average 0.12% CuEq lower cut-off over contiguous 20-metre
intersections (shorter intervals as the case may be at the upper and lower limits of reported intervals). Intervals of 20 metres
or less are not reported unless indicating significantly higher grades . True widths are estimated at 90 – 92% of the reported
core length intervals.
Osisko Metals adheres to a strict QA/QC program for core handling, sampling, sample transportation and analyses, including
insertion of blanks and standards in the sample stream. Drill core is drilled in HQ or NQ diameter and securely transported to
its core processing facility on site, where it is logged, cut and sampled. Samples selected for assay are sealed and shipped to
ALS Canada Ltd.’s preparation facility in Sudbury. Sample preparation details (code PREP-31DH) are available on the ALS
Canada website. Pulps are analyzed at the ALS Canada Ltd. facility in North Vancouver, BC. All samples are analyzed by four
acid digestion followed by both ICP-AES and ICP-MS for Cu, Mo and Ag.
About Osisko Metals
Osisko Metals Incorporated is a Canadian exploration and development company creating value in the critical metals sector,
with a focus on copper and zinc. The Company acquired a 100% interest in the past-producing Gaspé Copper mine from
Glencore Canada Corporation in July 2023. The Gaspé Copper mine is located near Murdochville in Québec's Gaspé
Peninsula. The Company is currently focused on resource expansion of the Gaspé Copper system, with current Indicated
Mineral Resources of 824 Mt averaging 0.34% CuEq and Inferred Mineral Resources of 670 Mt averaging 0.38% CuEq
(in compliance with NI 43-101). For more information, see Osisko Metals' November 14, 2024 news release entitled "Osisko
Metals Announces Significant Increase in Mineral Resource at Gaspé Copper". Gaspé Copper hosts the largest undeveloped
copper resource in eastern North America, strategically located near existing infrastructure in the mining-friendly province of
Québec.
In addition to the Gaspé Copper project, the Company is working with Appian Capital Advisory LLP through the Pine Point
Mining Limited joint venture to advance one of Canada's largest past-producing zinc mining camps, the Pine Point project,
located in the Northwest Territories. The current mineral resource estimate for the Pine Point project consists of Indicated
Mineral Resources of 49.5 Mt averaging 5.52% ZnEq and Inferred Mineral Resources of 8.3 Mt averaging 5.64% ZnEq
(in compliance with NI 43-101). For more information, see Osisko Metals' June 25, 2024 news release entitled "Osisko Metals
releases Pine Point mineral resource estimate: 49.5 million tonnes of indicated resources at 5.52% ZnEq". The Pine Point
project is located on the south shore of Great Slave Lake, NWT, close to infrastructure, with paved road access, an electrical
substation and 100 kilometres of viable haul roads.
For further information on this news release, visit www.osiskometals.com or contact:
Don Njegovan, President
Email: [email protected]
Phone: (416) 500-4129
Cautionary Statement on Forward-Looking Information
This news release contains "forward-looking information" within the meaning of applicable Canadian securities legislation
based on expectations, estimates and projections 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, 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 forward-looking
information pertaining to, among other things: the tax treatment of the FT Units; the timing of incurring the Qualifying
Expenditures and the renunciation of the Qualifying Expenditures; the ability to advance Gaspé Copper to a construction
decision (if at all); the ability to increase the Company's trading liquidity and enhance its capital markets presence; the
potential re-rating of the Company; the ability for the Company to unlock the full potential of its assets and achieve success;
the ability for the Company to create value for its shareholders; the advancement of the Pine Point project; the anticipated
resource expansion of the Gaspé Copper system and Gaspé Copper hosting the largest undeveloped copper resource in
eastern North America.
Forward-looking information is not a guarantee of future performance and is based upon a number of estimates and
assumptions of management, in light of management's experience and perception of trends, current conditions and expected
developments, as well as other factors that management believes to be relevant and reasonable in the circumstances,
including, without limitation, assumptions about: the ability of exploration results, including drilling, to accurately predict
mineralization; errors in geological modelling; insufficient data; equity and debt capital markets; future spot prices of copper
and zinc; the timing and results of exploration and drilling programs; the accuracy of mineral resource estimates; production
costs; political and regulatory stability; the receipt of governmental and third party approvals; licenses and permits being
received on favourable terms; sustained labour stability; stability in financial and capital markets; availability of mining
equipment and positive relations with local communities and groups. Forward-looking information involves risks, uncertainties
and other factors that could cause actual events, results, performance, prospects and opportunities to differ materially from
those expressed or implied by such forward-looking information. Factors that could cause actual results to differ materially
from such forward-looking information are set out in the Company's public disclosure record on SEDAR+ (www.sedarplus.ca)
under Osisko Metals' issuer profile. Although the Company believes that the assumptions and factors used in preparing the
forward-looking information in this news release are reasonable, undue reliance should not be placed on such information,
which only applies as of the date of this news release, and no assurance can be given that such events will occur in the
disclosed time frames or at all. The Company disclaims any intention or obligation to update or revise any forward- looking
information, whether as a result of new information, future events or otherwise, other than as required by law.
Neither the TSX Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX
Exchange) accept responsibility for the adequacy or accuracy of this news release. No stock exchange, securities
commission, or other regulatory authority has approved or disapproved the information contained herein.
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