Osisko Development Reports High-Grade Gold Intercepts in Cariboo Infill Drilling
Osisko Development Reports High-Grade Gold Intercepts in Cariboo

Osisko Development Announces Significant Infill Drilling Progress at Cariboo Gold Project

Osisko Development Corp. (NYSE: ODV, TSXV: ODV) has released new infill drilling results from its ongoing 13,000-meter program at the Lowhee Zone of the Cariboo Gold Project in central British Columbia, Canada. The company reported exceptional high-grade gold intercepts, including one of 596.40 grams per tonne gold over 2.0 meters from 6.1 meters downhole.

Drilling Program Achieves 80% Completion Milestone

The latest results represent an additional 5,043 meters of underground infill drilling, bringing the total completed drilling with full results to 11,025 meters. This achievement marks approximately 80% completion of the planned 13,000-meter program that commenced in August 2025. The drilling utilizes 10-meter spacing to provide detailed geological information about the Lowhee Zone.

Chris Lodder, President of Osisko Development, emphasized the importance of this work: "This tighter drill spacing gives us a better understanding of vein corridor spatial geometries and local variability specific to this part of the Lowhee deposit. As this work concludes, the resulting information is expected to help refine infill drill requirements and production designs and sequencing."

Exceptional Gold Intercepts Highlight Resource Potential

The company reported several significant assay results from fifty-four underground infill HQ diamond drill holes completed between mid-October and December 2025. The most notable intercept includes:

  • 596.40 g/t gold over 2.0 meters in drill hole BMU-25-132 from 6.1 meters downhole
  • Within this intercept, an exceptional 2,293.56 g/t gold over 0.5 meters from 6.6 meters downhole
  • Additional high-grade results include 21.67 g/t gold over 3.5 meters and 21.97 g/t gold over 2.5 meters

Program Progress and Timeline Updates

To date, an aggregate total of approximately 12.1 kilometers of drilling has been completed, representing about 88% of the total planned drill meters. Full assay results and quality assurance reviews are pending for the remaining unreported holes. The infill drilling program, which was temporarily suspended following an incident reported on January 23, 2026, is now anticipated to conclude in early Q2 2026.

The Cariboo Gold Project is a 100%-owned, permitted project located in central British Columbia. The ongoing infill drilling continues to contribute to a more detailed understanding of spatial controls and local variability within the Lowhee Zone, providing valuable data for future mine planning and development decisions.