The Prospector News

Osisko Gold Intersects 7.28 g/t Au over 16.15 m (105 m Vertical Depth), including 173.66 g/t Au over 0.60 m, and 7.13 g/t Au over 11.60 m (61 m Vertical Depth) in Lowhee Zone Underground Infill Drilling at Cariboo Gold Project

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Osisko Gold Intersects 7.28 g/t Au over 16.15 m (105 m Vertical Depth), including 173.66 g/t Au over 0.60 m, and 7.13 g/t Au over 11.60 m (61 m Vertical Depth) in Lowhee Zone Underground Infill Drilling at Cariboo Gold Project

 

 

 

 

 

HIGHLIGHTS

  • 3,933 m of new infill drilling in 36 holes from the Lowhee Zone 1290 m level. Highlight intercepts include:
  • 7.28 g/t Au over 16.15 m (~105 m vertical depth), including 173.66 g/t Au over 0.60 m, 6.80 g/t Au over 0.50 m, 5.39 g/t Au over 0.50 m, and 3.58 g/t Au over 0.50 m

 

7.13 g/t Au over 11.60 m (~61 m vertical depth), including 62.06 g/t Au over 0.50 m, 31.88 g/t Au over 0.80 m, 18.85 g/t Au over 0.50 m, 7.13 g/t Au over 0.85 m, 6.47 g/t Au over 0.90 m, and 2.23 g/t Au over 0.85 m

 

Osisko Gold Group Inc. (NYSE: OGG) (TSX-V: OGG) is pleased to announce new results from its ongoing definition infill drilling program on 10-15 metre target spacing totaling 3,933 m in 36 holes drilled from the 1290 m level in the Lowhee Zone of the Company’s flagship, permitted, 100%-owned Cariboo Gold Project, currently under construction in central British Columbia, Canada.

 

Chris Lodder, President, stated, “Ongoing underground infill drilling continues to strengthen our confidence in the Lowhee Zone of the Cariboo Gold deposit. Intercepts outside the modelled reserve stopes also suggest potential for resource conversion and upside mineralization, reinforcing the Cariboo Gold Project’s potential as underground development advances into new zones.”

 

Corporate Updates

  • In connection with the ongoing construction of the Cariboo Gold Project, the Company, through its wholly-owned subsidiary, Barkerville Gold Mines Ltd., has awarded the continuing underground mine development and related works contract to current contractor JDS Energy & Mining Inc. effective October 5, 2026.
  • The Company also announces that it has granted an aggregate of (i) 72,700 stock options of the Company, and (ii) 553,700 restricted share units of the Company to certain newly hired senior officers and non-executive employees, pursuant to the Company’s omnibus equity incentive plan. The Incentive Awards are designed to align the interests of the recipients with those of shareholders and support the execution of the Company’s long-term growth strategy. The Options are exercisable at a price of C$4.00 per common share of the Company (based on the October 2, 2026, closing price on the TSX Venture Exchange) and will expire on October 5, 2031. The Options will vest in three equal installments over the next three years. The RSUs will cliff vest on October 5, 2029, and are subject to time and performance conditions.

 

DRILL ASSAY HIGHLIGHTS

 

This news release contains assays from thirty-six (36) diamond drillholes completed in four fans totaling 3,933 m drilled to the northwest from the L1290-ORE-000 drill station with depths ranging from 81.20 to 150.50 m (see Table 1 and Figures 5-9). All holes were collared in HQ (63.5 millimetre diameter). Estimated true widths of intercepts are provided in Table 1. Select photon assay highlights include:

 

  • 7.28 grams per tonne gold over 16.15 m at ~105 m vertical depth in BMU-26-121, including:
    • 173.66 g/t Au over 0.60 m, and
    • 6.80 g/t Au over 0.50 m, and
    • 5.39 g/t Au over 0.50 m, and
    • 3.58 g/t Au over 0.50 m
  • 7.13 g/t Au over 11.60 m at ~61 m vertical depth in BMU-26-075 (Figure 1), including:
    • 62.06 g/t Au over 0.50 m, and
    • 31.88 g/t Au over 0.80 m, and
    • 18.85 g/t Au over 0.50 m, and
    • 7.13 g/t Au over 0.85 m, and
    • 6.47 g/t Au over 0.90 m, and
    • 2.23 g/t Au over 0.85 m
  • 9.40 g/t Au over 8.50 m at ~72 m vertical depth in BMU-26-076, including:
    • 78.39 g/t Au over 0.65 m, and
    • 41.31 g/t Au over 0.55 m, and
    • 3.77 g/t Au over 0.55 m, and
    • 3.06 g/t Au over 0.50 m
  • 29.30 g/t Au over 2.10 m at ~62 m vertical depth in BMU-26-096 (Figure 2), including:
    • 111.38 g/t Au over 0.55 m
  • 10.26 g/t Au over 5.75 m at ~56 m vertical depth in BMU-26-076, including:
    • 60.62 g/t Au over 0.80 m, and
    • 7.84 g/t Au over 0.50 m, and
    • 5.28 g/t Au over 0.50 m, and
    • 4.82 g/t Au over 0.50 m
  • 4.04 g/t Au over 14.35 m at ~78 m vertical depth in BMU-26-098, including:
    • 29.57 g/t Au over 1.00 m, and
    • 20.35 g/t Au over 1.00 m, and
    • 7.06 g/t Au over 0.50 m
  • 9.98 g/t Au over 5.70 m at ~91 m vertical depth in BMU-26-118, including:
    • 72.45 g/t Au over 0.60 m, and
    • 8.75 g/t Au over 0.75 m, and
    • 6.38 g/t Au over 0.50 m, and
    • 3.16 g/t Au over 0.50 m
  • 11.17 g/t Au over 3.05 m at ~65 m vertical depth in BMU-26-119, including:
    • 50.82 g/t Au over 0.50 m, and
    • 14.38 g/t Au over 0.50 m
  • 2.71 g/t Au over 9.95 m at ~63 m vertical depth in BMU-26-097, including:
    • 19.51 g/t Au over 0.95 m, and
    • 6.95 g/t Au over 0.50 m, and
    • 4.87 g/t Au over 0.50 m
  • 4.10 g/t Au over 6.50 m at ~40 m vertical depth in BMU-26-047, including:
    • 17.25 g/t Au over 0.50 m, and
    • 14.98 g/t Au over 0.50 m, and
    • 9.18 g/t Au over 0.50 m, and
    • 6.33 g/t Au over 0.50 m, and
    • 2.51 g/t Au over 0.50 m

 

Complete assay highlights, including true width estimates, are presented in Table 1. Vertical depths are measured from modelled topographic surface to the interval mid-point. Drill hole locations and orientations are listed in Table 2. Intervals not recovered were assigned zero grade. Top cuts have not been applied to high grade assays.

 

Cut-off assay composites from ongoing infill drilling at the 1290 Level, presented in plan in Figure 5 and in cross section in Figures 6-9, show a degree of spatial correlation with modelled reserve stopes; intercepts outside these areas suggest potential for resource conversion and upside mineralization.

 

FIGURE 1: 7.13 g/t Au over 11.60 m at ~61 m vertical depth in BMU-26-075

 

FIGURE 2: Visible gold with pyrite under hand lens in composite interval with 29.30 g/t Au over 2.1 m at ~62 m vertical depth in BMU-26-096

 

 FIGURE 3: Cariboo Gold Project deposit map with Location of Lowhee Zone and Cow Portal underground access.

 

 FIGURE 4: Location and overview of ongoing Lowhee Zone underground definition infill diamond drilling.

 

 FIGURE 5: Lowhee Zone select underground drilling highlights (plan view).

 

 

FIGURE 6: L1290-ORE-F09 select underground drill assay highlights (this release) with previously released surface and underground diamond drilling results in cross section by fan. New results from adjacent fans within slice (20 m looking 029°) omitted for visual clarity.

 

 FIGURE 7: L1290-ORE-F10 select underground drill assay highlights (this release) with previously released surface and underground diamond drilling results in cross section by fan. New results from adjacent fans within slice (20 m looking 039°) omitted for visual clarity.

 

 

FIGURE 8: L1290-ORE-F11 select underground drill assay highlights (this release) with previously released surface and underground diamond drilling results in cross section by fan. New results from adjacent fans within slice (20 m looking 046°) omitted for visual clarity.

 

 FIGURE 9: L1290-ORE-F12 select underground drill assay highlights (this release) with previously released surface and underground diamond drilling results in cross section by fan. New results from adjacent fans within slice (20 m looking 050°) omitted for visual clarity.

 

 

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Table 1: Length weighted assay composites and individual samples>=1.8 g/t for Lowhee Zone underground DD.
Drillhole ID   From (m) To (m) Length (m) Au g/t Est. True
Width (m)		 Approx. Vertical
Depth (m)
BMU-26-047   50.10 51.                                                                                                     .00 2.                                                                                                     .82 76
  Including 50.10 50.60 0.50 4.38    
    83.00 83.50 0.50 2.34 0.41 49
    89.65 96.15 6.50 4.                                                                                                     .09 40
  Including 90.15 90.65 0.50 17.25    
  and 92.15 92.65 0.50 2.51    
  and 92.65 93.15 0.50 14.98    
  and 94.15 94.65 0.50 6.33    
  and 94.65 95.15 0.50 9.18    
    99.30 100.30 1.00 2.67 0.64 34
  Including 99.30 99.80 0.50 4.05    
BMU-26-050   85.30 91.80 6.50 1.92 5.37 45
  Including 87.30 87.80 0.50 1.99    
  and 87.80 88.40 0.60 4.43    
  and 88.90 89.50 0.60 3.74    
  and 89.50 90.20 0.70 8.06    
    101.65 103.65 2.00 2.96 1.64 33
  Including 102.15 102.65 0.50 9.84    
BMU-26-053   48.00 48.50 0.50 2.24 0.38 82
    123.00 123.50 0.50 17.80 0.43 21
BMU-26-056   11.10 11.60 0.50 1.87 0.48 113
    46.90 48.40 1.50 3.52 1.45 85
  Including 47.40 47.90 0.50 10.26    
    78.80 79.30 0.50 1.92 0.33 61
BMU-26-059   11.00 11.50 0.50 2.53 0.45 114
    35.90 36.40 0.50 2.11 0.49 97
    43.50 44.00 0.50 3.42 0.46 91
    87.00 89.50 2.50 2.21 2.48 61
  Including 87.00 87.50 0.50 2.66    
  and 88.50 89.00 0.50 7.90    
    93.60 94.10 0.50 2.07 0.50 58
BMU-26-062   11.00 11.50 0.50 3.41 0.49 115
    42.50 44.00 1.50 2.06 1.31 96
  Including 43.00 43.50 0.50 5.68    
    60.20 61.70 1.50 2.97 1.48 86
  Including 61.20 61.70 0.50 7.79    
    78.50 80.50 2.00 1.98 1.34 76
  Including 80.00 80.50 0.50 7.02    
    84.80 86.30 1.50 6.27 1.15 73
  Including 85.30 85.80 0.50 18.52    
BMU-26-065   12.00 12.50 0.50 3.57 0.43 116
    42.00 42.50 0.50 6.51 0.50 100
    60.50 61.00 0.50 3.24 0.41 92
    63.60 64.10 0.50 7.64 0.49 91
    67.60 68.10 0.50 5.01 0.48 89
BMU-26-067   13.40 14.90 1.50 1.98 1.30 117
  Including 13.40 13.90 0.50 2.99    
  and 13.90 14.40 0.50 2.73    
    41.40 43.00 1.60 5.23 1.59 109
  Including 41.40 41.90 0.50 16.43    
    59.40 59.90 0.50 2.99 0.50 104
    63.40 63.90 0.50 1.95 0.50 103
    73.80 74.30 0.50 6.95 0.49 101
BMU-26-069   0.00 1.00 1.00 2.                                                                                                     .97 122
    14.50 15.00 0.50 13.87 0.46 119
    39.10 39.60 0.50 21.45 0.49 116
    45.00 49.50 4.50 2.                                                                                                     .04 115
  Including 45.00 45.50 0.50 13.23    
  and 48.50 49.00 0.50 4.15    
    82.20 87.00 4.80 2.66 4.51 115
  Including 82.20 82.70 0.50 15.58    
  and 84.45 84.95 0.50 2.13    
  and 86.00 87.00 1.00 3.81    
BMU-26-070   35.10 35.60 0.50 2.31 0.43 124
    48.40 48.90 0.50 6.76 0.37 126
    59.00 59.50 0.50 4.03 0.32 127
    73.40 74.00 0.60 6.88 0.49 130
    88.40 90.25 1.85 1.94 1.06 134
  Including 89.20 89.75 0.55 3.87    
BMU-26-072   39.10 40.60 1.50 5.43 1.45 87
  Including 39.60 40.10 0.50 15.77    
    69.50 70.50 1.00 3.09 0.64 63
  Including 69.50 70.00 0.50 6.05    
BMU-26-073   37.90 39.50 1.60 9.89 1.31 90
  Including 37.90 38.40 0.50 24.86    
  and 38.40 39.00 0.60 5.54    
    50.65 51.30 0.65 3.16 0.56 80
BMU-26-074   36.05 37.05 1.00 2.24 0.95 93
  Including 36.55 37.05 0.50 3.92    
    48.20 49.20 1.00 4.23 0.95 84
  Including 48.20 48.70 0.50 8.30    
    84.20 85.20 1.00 10.                                                                                                     .87 57
  Including 84.20 84.70 0.50 19.94    
    99.05 102.40 3.35 2.98 3.15 45
  Including 101.60 102.40 0.80 11.02    
BMU-26-075   10.80 11.30 0.50 2.85 0.47 114
    74.80 76.90 2.                                                                                                     .97 1.67 68
  Including 75.40 75.90 0.50 2.10    
  and 75.90 76.90 1.00 2.99    
    79.40 91.00 11.60 7.13 11.30 61
  Including 79.90 80.40 0.50 18.85    
  and 81.70 82.50 0.80 31.88    
  and 83.00 83.50 0.50 62.06    
  and 86.55 87.40 0.85 2.23    
  and 87.40 88.25 0.85 7.13    
  and 90.10 91.00 0.90 6.47    
    97.00 98.00 1.00 2.18 0.91 53
  Including 97.00 97.50 0.50 4.21    
BMU-26-076   72.50 81.00 8.50 9.40 7.94 72
  Including 73.75 74.25 0.50 3.06    
  and 75.10 75.65 0.55 41.31    
  and 75.65 76.20 0.55 3.77    
  and 76.20 76.85 0.65 78.39    
    91.00 94.00 3.00 2.14 2.72 61
  Including 93.00 93.50 0.50 11.15    
    97.60 103.35 5.75 10.26 5.21 56
  Including 99.50 100.00 0.50 4.82    
  and 100.50 101.30 0.80 60.62    
  and 101.30 101.80 0.50 5.28    
  and 102.85 103.35 0.50 7.84    
    110.40 111.90 1.50 2.75 1.43 48
  Including 110.40 110.90 0.50 2.42    
  and 110.90 111.40 0.50 5.60    
    113.30 114.30 1.00 8.23 1.00 46
  Including 113.30 113.80 0.50 15.88    
BMU-26-077   7.50 8.00 0.50 2.59 0.49 118
    78.10 79.15 1.05 3.56 1.05 79
  Including 78.10 78.60 0.50 3.84    
  and 78.60 79.15 0.55 3.32    
    81.75 82.25 0.50 1.92 0.49 77
BMU-26-078   42.00 42.50 0.50 2.25 0.50 102
    68.50 69.50 1.00 1.97 0.97 91
  Including 68.50 69.00 0.50 3.22    
    86.00 89.00 3.00 3.49 2.12 84
  Including 86.00 86.50 0.50 17.99    
BMU-26-079   12.70 13.70 1.00 13.56 0.71 118
  Including 13.20 13.70 0.50 26.97    
    43.90 45.40 1.50 3.90 1.43 109
  Including 44.90 45.40 0.50 11.51    
    63.00 63.50 0.50 6.36 0.50 105
    69.60 71.10 1.50 2.53 1.48 103
  Including 69.60 70.10 0.50 7.08    
    73.10 73.60 0.50 3.49 0.47 103
    79.00 81.                                                                                                     .10 5.88 2.07 101
  Including 80.60 81.10 0.50 24.35    
BMU-26-080   14.80 15.30 0.50 18.58 0.45 120
    49.40 49.90 0.50 3.38 0.43 117
    71.50 72.00 0.50 2.60 0.48 117
    82.40 85.20 2.80 1.80 2.42 118
  Including 82.90 83.80 0.90 4.40    
BMU-26-081   15.80 17.10 1.30 6.20 1.06 124
  Including 16.60 17.10 0.50 15.63    
    44.35 44.85 0.50 3.00 0.43 127
    46.50 47.00 0.50 3.01 0.43 127
    53.65 54.70 1.05 3.70 0.80 128
  Including 54.20 54.70 0.50 7.53    
    58.60 59.10 0.50 1.81 0.38 129
    77.50 79.00 1.50 5.23 1.15 133
  Including 77.50 78.00 0.50 15.19    
    80.35 80.85 0.50 3.76 0.43 134
BMU-26-093   6.00 7.00 1.00 1.87 0.87 116
    68.00 71.05 3.05 3.07 2.64 67
  Including 68.90 69.40 0.50 2.01    
  and 69.40 69.95 0.55 8.82    
  and 69.95 70.55 0.60 3.27    
BMU-26-094   36.00 39.05 3.05 5.23 2.74 93
  Including 38.05 38.55 0.50 29.40    
    41.50 42.55 1.05 2.84 0.91 89
  Including 42.00 42.55 0.55 5.00    
    57.00 57.50 0.50 1.94 0.35 78
    61.00 65.70 4.70 3.84 3.23 74
  Including 62.55 63.20 0.65 18.46    
  and 63.70 64.20 0.50 7.34    
  and 64.70 65.20 0.50 2.51    
BMU-26-095   35.90 39.40 3.50 4.54 3.29 95
  Including 37.40 37.90 0.50 29.01    
    65.90 66.40 0.50 3.04 0.47 75
BMU-26-096   68.30 70.80 2.50 3.39 2.17 77
  Including 68.30 68.80 0.50 2.50    
  and 68.80 69.30 0.50 13.72    
    91.40 93.50 2.10 29.30 1.79 62
  Including 91.90 92.45 0.55 111.38    
    119.40 119.90 0.50 1.97 0.23 42
BMU-26-097   35.75 36.25 0.50 2.00 0.49 101
    67.25 77.                                                                                                     .85 1.95 9.44 81
  Including 67.75 68.55 0.80 3.63    
  and 70.80 71.70 0.90 7.62    
  and 72.80 73.50 0.70 2.44    
  and 74.00 74.50 0.50 3.28    
  and 74.50 75.00 0.50 8.49    
    88.30 89.80 1.50 2.42 1.30 71
  Including 88.80 89.30 0.50 6.94    
    97.00 106.95 9.95 2.71 8.76 63
  Including 97.00 97.50 0.50 6.95    
  and 98.85 99.80 0.95 19.51    
  and 106.45 106.95 0.50 4.87    
    111.50 114.00 2.50 1.81 2.41 57
  Including 113.00 113.50 0.50 8.56    
    130.80 137.00 6.20 2.32 5.99 47
  Including 133.25 133.75 0.50 14.79    
  and 134.80 135.50 0.70 2.10    
  and 135.50 136.25 0.75 3.77    
BMU-26-098   65.75 67.50 1.75 2.44 1.74 89
  Including 65.75 66.25 0.50 7.65    
    81.00 95.35 14.35 4.04 11.51 78
  Including 89.50 90.50 1.00 29.57    
  and 92.00 92.50 0.50 7.06    
  and 92.50 93.50 1.00 20.35    
    107.40 119.50 12.10 2.07 10.48 65
  Including 107.40 108.00 0.60 3.44    
  and 110.50 111.15 0.65 5.14    
  and 111.65 112.15 0.50 8.08    
  and 112.90 113.40 0.50 4.50    
  and 113.40 113.90 0.50 13.82    
  and 114.40 115.40 1.00 2.26    
  and 115.40 116.00 0.60 1.98    
BMU-26-099   83.50 85.50 2.00 2.12 1.47 89
  Including 85.00 85.50 0.50 7.35    
    92.20 92.85 0.65 1.92 0.59 86
    94.35 97.00 2.65 1.83 2.25 85
  Including 94.85 95.85 1.00 2.33    
BMU-26-100   11.20 12.20 1.00 10.38 0.97 120
  Including 11.70 12.20 0.50 19.78    
    44.90 47.00 2.10 2.04 2.07 112
  Including 44.90 45.50 0.60 5.87    
    66.00 69.00 3.00 2.85 2.90 109
  Including 68.50 69.00 0.50 16.13    
    76.40 77.25 0.85 2.48 0.84 108
    90.00 91.50 1.50 2.83 1.06 106
  Including 91.00 91.50 0.50 8.26    
    104.65 106.50 1.85 1.87 1.82 104
  Including 104.65 105.15 0.50 5.19    
BMU-26-101   14.05 16.70 2.65 2.07 2.29 122
  Including 14.70 15.20 0.50 7.87    
  and 15.20 15.70 0.50 2.47    
    48.10 51.90 3.80 4.85 3.20 120
  Including 51.40 51.90 0.50 34.71    
    66.00 68.50 2.50 2.19 2.25 121
  Including 68.00 68.50 0.50 10.61    
    73.50 74.50 1.00 2.99 0.87 121
  Including 73.50 74.00 0.50 5.89    
    90.10 91.10 1.00 4.60 0.71 122
  Including 90.10 90.60 0.50 8.92    
    106.00 111.00 5.00 2.24 4.05 124
  Including 106.00 106.55 0.55 1.88    
  and 108.00 108.50 0.50 7.79    
  and 109.00 109.50 0.50 11.12    
BMU-26-102   2.70 3.30 0.60 2.95 0.41 124
    8.30 8.80 0.50 1.85 0.35 124
    9.40 10.60 1.20 1.90 0.69 124
  Including 9.40 10.10 0.70 2.15    
    17.00 17.50 0.50 10.93 0.41 124
    37.10 38.10 1.00 8.37 0.77 127
  Including 37.10 37.60 0.50 16.46    
    58.30 58.80 0.50 3.21 0.35 131
BMU-26-116   16.20 16.80 0.60 2.36 0.42 124
    49.50 50.05 0.55 3.03 0.39 127
    53.15 53.65 0.50 2.41 0.45 128
    68.15 69.15 1.00 8.65 0.94 130
  Including 68.65 69.15 0.50 16.99    
    72.50 73.00 0.50 2.32 0.43 131
    87.60 88.10 0.50 2.01 0.43 133
    89.70 90.30 0.60 4.63 0.52 134
    110.80 113.50 2.70 3.86 2.54 139
  Including 111.30 111.80 0.50 18.27    
  and 111.80 112.40 0.60 1.81    
    115.55 116.05 0.50 3.61 0.47 140
    119.00 119.50 0.50 2.01 0.47 140
BMU-26-117   11.50 13.30 1.80 2.35 1.63 121
  Including 12.30 12.80 0.50 7.95    
    47.40 47.90 0.50 2.69 0.43 118
    93.40 93.90 0.50 2.40 0.43 118
    104.90 106.40 1.50 4.35 1.15 119
  Including 105.40 105.90 0.50 12.04    
    116.50 117.00 0.50 2.43 0.35 120
BMU-26-118   10.90 11.90 1.00 8.87 0.94 119
  Including 10.90 11.40 0.50 17.52    
    77.50 78.50 1.00 2.99 1.00 99
  Including 77.50 78.00 0.50 5.89    
    98.40 99.40 1.00 2.40 0.94 94
  Including 98.40 98.90 0.50 2.46    
  and 98.90 99.40 0.50 2.33    
    110.90 116.60 5.70 9.98 5.36 91
  Including 111.45 111.95 0.50 6.38    
  and 111.95 112.55 0.60 72.45    
  and 112.55 113.30 0.75 8.75    
  and 113.30 113.80 0.50 3.16    
BMU-26-119   34.50 35.00 0.50 4.24 0.47 104
    44.50 46.00 1.50 5.55 1.48 99
  Including 44.50 45.00 0.50 15.26    
    64.00 66.00 2.00 2.40 1.81 90
  Including 64.00 64.70 0.70 6.19    
    88.90 89.40 0.50 27.24 0.47 77
    100.90 105.90 5.00 2.07 4.83 69
  Including 100.90 101.40 0.50 2.18    
  and 101.40 102.00 0.60 1.90    
  and 102.00 102.50 0.50 8.41    
  and 102.50 103.00 0.50 1.92    
  and 104.00 104.50 0.50 3.21    
  and 105.40 105.90 0.50 1.90    
    111.20 114.25 3.05 11.17 2.34 65
  Including 111.75 112.25 0.50 50.82    
  and 113.25 113.75 0.50 14.38    
BMU-26-120   24.00 25.00 1.00 1.81 0.91 106
  Including 24.50 25.00 0.50 3.49    
    33.30 34.70 1.40 6.97 1.21 99
  Including 33.30 34.20 0.90 10.78    
    52.50 54.50 2.00 3.30 1.73 87
  Including 53.00 53.50 0.50 12.86    
BMU-26-121   14.25 30.40 16.15 7.28 13.99 105
  Including 17.90 18.40 0.50 3.58    
  and 18.40 19.00 0.60 173.66    
  and 26.60 27.10 0.50 6.80    
  and 29.90 30.40 0.50 5.39    
    39.00 40.90 1.90 1.95 1.72 91
  Including 39.90 40.40 0.50 6.63    
    47.90 51.00 3.10 1.98 1.99 85
  Including 48.90 49.40 0.50 5.50    
  and 49.40 49.90 0.50 1.84    
    52.00 53.00 1.00 1.96 0.94 82
  Including 52.50 53.00 0.50 2.79    
    56.90 58.00 1.10 2.56 0.84 79
  Including 57.40 58.00 0.60 4.56    

 

 

 

Table 2: Underground DD collar locations, drillhole orientations, and max depths. Negative dips point down.
Drillhole ID Mine Location Easting
(UTM Zn 10N)		 Northing
(UTM Zn 10N)		 Elevation (m) Dip Azimuth Depth (m)
BMU-26-047 L1290-ORE-000 596489 5882890 1292 33 302 123.20
BMU-26-050 L1290-ORE-000 596489 5882890 1292 28 302 126.30
BMU-26-053 L1290-ORE-000 596489 5882890 1291 22 302 132.40
BMU-26-056 L1290-ORE-000 596489 5882890 1291 16 302 112.90
BMU-26-059 L1290-ORE-000 596489 5882890 1291 10 302 103.90
BMU-26-062 L1290-ORE-000 596489 5882890 1290 3 302 96.50
BMU-26-065 L1290-ORE-000 596489 5882890 1290 -4 302 93.30
BMU-26-067 L1290-ORE-000 596489 5882890 1290 -16 302 87.40
BMU-26-069 L1290-ORE-000 596489 5882890 1290 -27 302 87.50
BMU-26-070 L1290-ORE-000 596489 5882890 1289 -38 302 96.20
BMU-26-072 L1290-ORE-000 596489 5882890 1292 33 309 96.20
BMU-26-073 L1290-ORE-000 596489 5882890 1292 28 309 111.30
BMU-26-074 L1290-ORE-000 596489 5882890 1291 22 309 120.40
BMU-26-075 L1290-ORE-000 596489 5882890 1291 16 309 118.90
BMU-26-076 L1290-ORE-000 596489 5882890 1291 10 309 114.30
BMU-26-077 L1290-ORE-000 596489 5882890 1290 3 309 113.10
BMU-26-078 L1290-ORE-000 596489 5882890 1290 -4 309 102.30
BMU-26-079 L1290-ORE-000 596489 5882890 1290 -17 309 93.40
BMU-26-080 L1290-ORE-000 596489 5882890 1289 -27 309 97.30
BMU-26-081 L1290-ORE-000 596489 5882890 1289 -38 309 105.20
BMU-26-093 L1290-ORE-000 596490 5882890 1292 33 316 81.30
BMU-26-094 L1290-ORE-000 596490 5882890 1292 28 316 81.20
BMU-26-095 L1290-ORE-000 596489 5882890 1291 22 316 87.40
BMU-26-096 L1290-ORE-000 596490 5882890 1291 17 316 150.50
BMU-26-097 L1290-ORE-000 596490 5882890 1291 10 317 137.00
BMU-26-098 L1290-ORE-000 596490 5882890 1290 3 316 122.00
BMU-26-099 L1290-ORE-000 596489 5882890 1290 -4 316 116.00
BMU-26-100 L1290-ORE-000 596489 5882891 1290 -16 316 113.00
BMU-26-101 L1290-ORE-000 596489 5882891 1289 -27 316 114.50
BMU-26-102 L1290-ORE-000 596490 5882890 1289 -38 316 111.30
BMU-26-116 L1290-ORE-000 596490 5882891 1289 -33 320 120.50
BMU-26-117 L1290-ORE-000 596490 5882891 1289 -21 320 119.00
BMU-26-118 L1290-ORE-000 596490 5882891 1290 -7 320 126.50
BMU-26-119 L1290-ORE-000 596490 5882891 1291 7 320 134.00
BMU-26-120 L1290-ORE-000 596490 5882890 1291 21 320 89.00
BMU-26-121 L1290-ORE-000 596490 5882890 1292 33 320 97.90


ABOUT LOWHEE ZONE

 

Geological mapping and geochemical sampling were carried out on Barkerville Mountain from 2017-2018, with the Lowhee Zone identified as a high-priority drill target. From 2019 to 2022, a total of 167 surface drill holes were completed, totaling 54,494.5 m.

 

The Lowhee Zone is accessed through the Cow portal on the northwestern flank of Barkerville Mountain (Figure 3 and Figure 4). Cow portal construction was completed in Q4 2024 and development of the underground ramp into the Lowhee Zone commenced in Q1 2025. The probable mineral reserves estimate for the Lowhee Zone (with an effective date of April 10, 2025) includes 104,491 ounces of contained Au (923,162 tonnes grading 3.52 g/t Au) and represents approximately 5% of the total contained gold in the estimated probable mineral reserves for the Cariboo Gold Project.

 

ABOUT CARIBOO GOLD PROJECT

 

The Cariboo Gold Project is a permitted, 100%-owned feasibility-stage project currently under construction located in the historic Wells-Barkerville mining camp of central British Columbia, Canada. Spanning approximately 186,740 hectares, the Company’s land package includes 443 mineral titles and covers an area that extends approximately 77 kilometres from northwest to southeast. In late 2024, the Project was granted the Mines Act and Environmental Management Act (British Columbia) permits, marking the successful completion of the permitting process for key approvals. On September 14, 2026, the Company announced a formal positive decision to proceed with the construction of the Project, with an expected first gold pour in Q1 2029 and commercial production in H2 2029.

 

Technical Reports

 

Scientific and technical information relating to the Cariboo Gold Project and the 2025 feasibility study on the Cariboo Gold Project is supported by the technical report, titled “NI 43-101 Technical Report, Feasibility Study for the Cariboo Gold Project, District of Wells, British Columbia, Canada” and dated June 11, 2025 (with an effective date of April 25, 2025).

 

For readers to fully understand the information in the Cariboo Technical Report, reference should be made to the full text of the Cariboo Technical Report in its entirety, including all assumptions, parameters, qualifications, limitations and methods therein. The Cariboo Technical Report is intended to be read as a whole, and sections should not be read or relied upon out of context. The Cariboo Technical Report was prepared in accordance with National Instrument 43-101 – Standards of Disclosure for Mineral Projects and is available electronically on SEDAR+ (www.sedarplus.ca) and on EDGAR (www.sec.gov) under Osisko Gold’s issuer profile and on the Company’s website at www.osiskogold.ca.

 

Qualified Persons

 

The scientific and technical information in this news release has been reviewed, verified and approved by Scott Smith, P. Geo., Vice President, Exploration of Osisko Gold, a “qualified person” within the meaning of NI 43-101. Verification includes core photo and three-dimensional review of logged drillhole data and assays consistent with the Company’s standard procedures.

 

Quality Assurance – Quality Control

 

All drill core was whole core sampled in on-site logging facilities following daily QAQC checks for logging and sampling errors. Quality control samples are inserted at regular intervals in the sample stream, including blanks and reference materials with all sample shipments to monitor laboratory performance. Samples are bagged, labelled, sealed with numbered security tags.

 

Samples are taken by expeditor from the logging facilities direct to MSALABS’s analytical facility in Prince George, B.C., Canada, for preparation and analysis. MSALABS is independent of the Company. The MSALABS facility is accredited to the ISO/IEC 17025 standard for gold assays, and all analytical methods include quality control materials at set frequencies with established data acceptance criteria. The entire sample is dried, crushed, and split into sealed containers. Analysis for gold is by gamma ray analysis using the Chrysos PhotonAssay (PA1408X). Samples are bombarded with gamma rays and the resulting signal is sent to the detectors.

 

ABOUT OSISKO GOLD GROUP INC.

 

Osisko Gold Group Inc. is a North American gold development company focused on past-producing mining camps with district-scale potential. The Company’s objective is to become an intermediate gold producer through the development of its flagship, fully permitted, 100%-owned Cariboo Gold Project, currently under construction in central British Columbia, Canada. The Project is situated within the Company’s broader Cariboo regional land package, which hosts numerous prospective exploration targets and provides opportunities for future discoveries. Its Cariboo project pipeline is complemented by the Tintic Project, located in the historic East Tintic mining district in Utah, U.S.A., a brownfield property with significant exploration potential, extensive historical mining data, and access to established infrastructure. Osisko Gold is focused on developing long-life mining assets in mining-friendly jurisdictions while maintaining a disciplined approach to capital allocation, development risk management, and mineral inventory growth.

Posted October 5, 2026
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