Osisko Metals Closes C$25 Million Flow-Through Share Financing

(TSX: OM; OTCQX: OMZNF; FRANKFURT: OB51) Osisko Metals Incorporated announced the closing of a non-brokered private placement financing, issuing an aggregate of 9,461,840 common shares that qualify as flow-through shares at a price of $2.64 per share for gross proceeds of $24,979,257.60. The offering was structured as a flow-through share transaction arranged by PearTree Securities Inc. Osisko Metals will use an amount equal to the gross proceeds to incur eligible Canadian exploration expenses that qualify as flow-through critical mineral mining expenditures for its projects in Québec. These qualifying expenditures will be incurred on or before December 31, 2027, and will be renounced to the initial purchasers of the flow-through shares with an effective date no later than December 31, 2026. Agnico Eagle Mines Limited and Hudbay Minerals Inc., existing strategic investors, have purchased all of the common shares issued under the offering as part of a follow-on transaction. The flow-through shares are subject to a hold period expiring four months and one day from the date of issuance under Canadian securities laws. The offering remains subject to final acceptance of the Toronto Stock Exchange. Osisko Metals acquired a 100% interest in the past-producing Gaspé Copper mine from Glencore Canada Corporation in July 2023. The Gaspé Copper Project is located near Murdochville in Québec’s Gaspé Peninsula and is currently focused on resource expansion. The current pit-constrained Measured and Indicated Mineral Resources for Gaspé Copper are 1.83 Bt averaging 0.32% CuEq, and Inferred Mineral Resources are 239 Mt averaging 0.46% CuEq, in compliance with NI 43-101. The Gaspé Copper Project is described as hosting the largest undeveloped copper resource in eastern North America. Osisko Metals is also advancing the Pine Point project in the Northwest Territories through a joint venture with Appian Capital Advisory LLP. The Pine Point project has 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. The Pine Point project is located on the south shore of Great Slave Lake, Northwest Territories, with access to infrastructure including paved roads, an electrical substation, and 100 kilometres of haul roads. Don Njegovan is listed as President of Osisko Metals.

Osisko Intersects 314 Metres Averaging 0.44% Cu at Gaspé

(TSX:OM, OTCQX:OMZNF, FRANKFURT:0B51) Osisko Metals Incorporated announced new analytical results from its ongoing 2026 drill program at the Gaspé Copper Project, located in the Gaspé Peninsula of Eastern Québec. The results include 38 mineralized intercepts from 15 drill holes, with both infill and expansion intercepts reported. Infill intercepts are within the 2026 Mineral Resource Estimate (MRE) model and aim to upgrade Inferred Mineral Resources to Measured or Indicated categories. Expansion intercepts are outside the 2026 MRE model and include both in-pit and out-of-pit expansion, potentially converting waste to resources or defining new resources. Highlights include 314.0 metres averaging 0.44% Cu (infill) in DDH 30-1272, including 9.0 metres averaging 3.23% Cu and 16.7 g/t Ag; 240.5 metres averaging 0.44% Cu (infill) in DDH 30-1270; 552.5 metres averaging 0.30% Cu (infill) in DDH 30-1269; 142.6 metres averaging 0.34% Cu (infill) in DDH 30-1274; 121.5 metres averaging 0.42% Cu (out-of-pit expansion) in DDH 30-1260; 87.5 metres averaging 0.48% Cu (out-of-pit expansion) in DDH 30-1268, including 10.7 metres averaging 1.98% Cu and 9.0 g/t Ag; and 85.5 metres averaging 0.42% Cu (out-of-pit expansion) in DDH 30-1265. Drill hole 30-1260, the most southerly hole drilled to date at Needle Mountain, returned 121.5 metres averaging 0.42% Cu at the B and C Zones. Drill hole 30-1268 intersected 87.5 metres averaging 0.48% Cu at the B and C Zone skarns. Drill hole 30-1266 intersected 33.0 metres averaging 0.41% Cu and 2.63 g/t Ag. Drill hole 30-1265 intersected four intervals of mineralization, 12.4 to 85.5 metres long, averaging 0.27 to 0.83% Cu and 2.43 to 7.30 g/t Ag. Drill holes 30-1262, 30-1270, and 30-1272 are infill holes near the southern margin of the 2026 MRE model, with 240.5 and 314.0 metre intervals averaging 0.44% Cu in 30-1270 and 30-1272, respectively. Drill holes 30-1261, 30-1263, 30-1264, 30-1267, 30-1269, 30-1271, and 30-1274 are infill holes on the south flank of Copper Mountain, returning intervals grading 0.12% to 0.40% Cu. Copper Equivalent (CuEq) grades are calculated using long-term metal prices of US$4.50/lb copper, US$20.00/lb molybdenum, and US$45.00/oz silver. The company acquired a 100% interest in the past-producing Gaspé Copper mine from Glencore Canada Corporation in July 2023. The current pit-constrained Measured and Indicated Mineral Resources at Gaspé Copper are 1.83 Bt averaging 0.32% CuEq, and Inferred Mineral Resources are 239 Mt averaging 0.46% CuEq. The Pine Point project, a joint venture with Appian Capital Advisory LLP, has Indicated Mineral Resources of 49.5 Mt averaging 5.52% ZnEq and Inferred Mineral Resources of 8.3 Mt averaging 5.64% ZnEq. The Pine Point project is located in the Northwest Territories. The current drill program is designed to convert the bulk of the remaining 2026 MRE Inferred resources to Measured and Indicated categories and to test expansion laterally to the west and south/southwest.

Osisko Intersects 94 Metres Averaging 1.47% Cu at Gaspé

(TSX:OM, OTCQX:OMZNF, FRANKFURT:0B51) Osisko Metals Incorporated announced additional analytical results from its ongoing 2026 drill program at the Gaspé Copper Project, located in the Gaspé Peninsula of Eastern Québec. The release presents 38 mineralized intercepts from 12 drill holes, with infill intercepts focused on upgrading Inferred Mineral Resources to Measured or Indicated categories within the 2026 MRE model, and expansion intercepts located outside the 2026 MRE model, including both in-pit and out-of-pit expansion. CEO Robert Wares highlighted excellent infill results from holes 30-1251 and 30-1258, with hole 30-1251 intersecting 94.4 metres averaging 1.47% Cu, including 5.3 metres averaging 8.31% Cu and 51.0 g/t Ag, and a shallower interval of 185.5 metres averaging 0.41% Cu. Hole 30-1258 intersected 121.0 metres averaging 0.71% Cu, including 9.5 metres averaging 4.97% Cu and 56.3 g/t Ag, hosted in a previously unknown porphyry intrusion. Other notable results include 106.5 metres averaging 0.60% Cu (out-of-pit expansion) in DDH 30-1250, including 15.9 metres averaging 1.92% Cu and 11.0 g/t Ag; 218.8 metres averaging 0.35% Cu (infill) in DDH 30-1256; 66.0 metres averaging 0.45% Cu (out-of-pit expansion) in DDH 30-1259; and 56.4 metres averaging 0.61% Cu (infill) in DDH 30-1255. Table 1 details all intercepts, including grades, widths, and silver/molybdenum content. Drill holes 30-1248, 30-1249, 30-1253, and 30-1254, located south and southwest of the Needle Mountain pit, yielded multiple mineralized intersections with grades from 0.19% Cu to 0.50% Cu. Drill hole 30-1250, on the north slope of Needle Mountain, intersected higher grades around the C Zone skarn horizon. Drill hole 30-1259, on Needle Mountain East, intersected five mineralized intervals with grades from 0.12% Cu to 0.45% Cu, extending mineralization to a vertical depth of 420 metres. Infill holes near Copper Brook (30-1251, 30-1252, 30-1255, 30-1256, 30-1257, 30-1258) intersected mineralization consistent with the 2026 MRE block model, except for higher-than-expected grades in 30-1251 and 30-1258. High molybdenum grades up to 0.5% Mo were locally obtained in both the C Zone and E Zone skarns. The 2022 to 2024 drill programs focused on defining open-pit resources within Copper Mountain stockwork mineralization, with subsequent drilling increasing resources, mostly in the Inferred category, and further drilling in 2025 increasing Measured and Indicated resources. The current program aims to convert remaining Inferred resources to Measured and Indicated categories and test lateral expansion. Copper Equivalent (CuEq) grades are calculated using long-term metal prices of US$4.50/lb copper, US$20.00/lb molybdenum, and US$45.00/oz silver. Osisko Metals acquired a 100% interest in the Gaspé Copper mine from Glencore Canada Corporation in July 2023. The Gaspé Copper project has current pit-constrained Measured and Indicated Mineral Resources of 1.83 Bt averaging 0.32% CuEq and Inferred Mineral Resources of 239 Mt averaging 0.46% CuEq. The company is also advancing the Pine Point project in the Northwest Territories through a joint venture with Appian Capital Advisory LLP, with Indicated Mineral Resources of 49.5 Mt averaging 5.52% ZnEq and Inferred Mineral Resources of 8.3 Mt averaging 5.64% ZnEq. The Pine Point project is located on the south shore of Great Slave Lake, NWT, with access to infrastructure.

Osisko Metals Announces Conversion of Glencore Canada's US$25 Million Convertible Debenture

(TSX: OM; OTCQX: OMZNF) Osisko Metals Incorporated announced that Glencore Canada Corporation has exercised its right to convert the Company's US$25,000,000 senior secured convertible debenture into securities of the Company. The conversion of the initial principal amount of US$25,000,000 resulted in the issuance of 88,962,500 Units at a conversion price of C$0.40 per Unit, each Unit consisting of one Common Share and one-half of one Warrant, with each Warrant having an exercise price of C$0.46 per Common Share. The conversion of accrued interest of US$7,617,438.72 resulted in the issuance of 6,862,444 Units at a conversion price of C$1.58 per Unit, with each Warrant having an exercise price of C$1.68 per Common Share. Glencore Canada exercised, on a cashless basis, all 44,481,250 Warrants from the principal conversion, resulting in the issuance of 32,301,860 Common Shares. After these transactions, Glencore Canada owns or controls 128,126,804 Common Shares and 3,431,222 Warrants, representing approximately 14.4% of the issued and outstanding Common Shares on a non-diluted basis and 14.7% on a partially-diluted basis. Osisko Metals holds a 100% interest in the Gaspé Copper mine, with current pit-constrained Measured and Indicated Mineral Resources of 1.83 Bt averaging 0.32% CuEq and Inferred Mineral Resources of 239 Mt averaging 0.46% CuEq. The company projects receipt of the final approval of the Toronto Stock Exchange for the conversion.

Osisko Metals Files NI 43-101 Technical Report for the Gaspé Copper Project

Osisko Metals Incorporated announced the filing on SEDAR+ of a technical report titled "NI 43-101 Technical Report on the Gaspé Copper Project with an Updated Mineral Resource Estimate for the Copper Mountain Deposit, Quebec, Canada" dated May 28, 2026 (effective date January 17, 2026). The 2026 MRE for the Copper Mountain deposit reports measured resources of 136.5 Mt at 0.42% CuEq, indicated resources of 1,697.7 Mt at 0.32% CuEq, and inferred resources of 238.8 Mt at 0.46% CuEq, using a base-case cut-off grade of 0.16% copper equivalent. The contained copper in measured and indicated resources totals 10,766 M lbs (4,883 kt), with 2,158 M lbs (979 kt) in inferred resources. The resource estimate is based on 2,793 drill holes and 208,043 samples, including 159,212 metres in 238 drill holes drilled by the Company between 2022 and 2025. The 2026 MRE supersedes all previously filed mineral resource estimates for the Copper Mountain deposit, including those from 2024 and 2022. The Company acquired a 100% interest in the past-producing Gaspé Copper mine from Glencore Canada Corporation in July 2023. The company projects potential for resource growth and category upgrades, advancement of the Pine Point project, and anticipated resource expansion of the Gaspé Copper system.