KGeN: Osisko Gold Reports High-Grade Drilling at Proserpine Target Near Cariboo

• Osisko Gold Group reported initial diamond drilling results at the Proserpine target, confirming a new mineralized system with high-grade gold structures.
• The results indicate potential for bulk mining methods, as broader lower-grade zones were intersected alongside high-grade intervals.
• The company plans to resume drilling with three rigs, aiming to expand the known footprint and test previously untargeted areas.
• Analysts view the discovery as a proof-of-concept for resource growth, emphasizing the scale of the system over exceptional grades alone.
• Osisko Gold Royalties maintains a Moderate Buy consensus, though the two entities remain structurally distinct.

Osisko Gold Group Inc. has released its first set of new diamond drilling results from a surface exploration program at the Proserpine regional greenfield target. Located in central British Columbia, Proserpine sits approximately seven kilometers southeast of the company’s permitted Cariboo Gold Project. The exploration campaign, which ran from February to May 2026, completed 6,463 meters of drilling across 14 holes. These results confirm the presence of an emerging gold mineralized system that shares geological similarities with the nearby Cariboo deposit.

The drilling program intersected high-grade gold structures alongside broader zones of lower-grade mineralization. Key intercepts included 95.93 grams per tonne gold over 4.60 meters at a vertical depth of 71 meters. This interval contained a high-grade segment of 873.00 grams per tonne gold over 0.50 meters. Other notable results included 5.46 grams per tonne gold over 8.60 meters and 2.17 grams per tonne gold over 14.45 meters.

Management highlighted that all drill holes reaching their intended target depths encountered mineralization. The gold-bearing structures were found from near surface to vertical depths exceeding 400 meters. This vertical extent, combined with the presence of lower-grade zones, suggests potential for open-pit or bulk mining methods at Proserpine. Such a mining approach would differ from the higher-grade, underground-focused operations planned for the Cariboo deposit.

The drilling campaign has expanded the known mineralized footprint at Proserpine to approximately one kilometer along strike by 0.5 kilometers in width. Mineralization remains open in all directions, indicating significant exploration upside. National Bank Financial mining analyst Don DeMarco noted that while the exceptional grades are noteworthy, the scale of the new system is the more critical takeaway. Drilling defined mineralization over only a small portion of the larger target.

Osisko Gold Group has resumed drilling with three active rigs following a seasonal hiatus. The company plans an additional 26,500 meters of drilling to increase drillhole density at Proserpine Southeast. This future program will also initiate first-pass drilling at Proserpine Northwest. Preliminary observations suggest that siliceous sandstone units may represent a more favorable host rock for mineralization than calcareous sandstone.

The Cariboo Gold Project, Osisko’s main development asset, holds all necessary permits from British Columbia authorities. A 2025 feasibility study envisions a scalable underground operation expected to produce approximately 1.89 million ounces of gold over a 10-year life. The project is valued at an after-tax net present value of $943 million, based on a gold price of $2,400 per ounce.

Separately, Osisko Gold Royalties Ltd. trades independently and is not the entity conducting the Proserpine exploration. Osisko Gold Royalties operates a portfolio of over 195 interests, anchored by a royalty on Agnico Eagle Mines Limited’s Canadian Malartic Complex. The company recently transitioned to a pure-play royalty model.

Analysts maintain a Moderate Buy consensus on Osisko Gold Royalties, with an average 12-month price target of C$63.20. Recent actions include CIBC lowering its target to C$85.00 and Stifel raising its target to C$71.00 with a buy rating. The stock trades near net asset value, offering a valuation discount compared to traditional mining peers.

In contrast, Osisko Gold Group’s stock has surged following the Proserpine results, valuing the company at approximately $1.2 billion. However, TipRanks’ AI Analyst, Spark, rates the stock as Neutral due to persistent losses and heavy cash burn. The exploration progress underscores the company’s ambitions, but financial metrics remain a key consideration for investors.

The structural separation between Osisko Gold Group and Osisko Gold Royalties resolves prior management conflicts. Osisko Gold Royalties divested its stake in Osisko Mining to align with market preferences for focused royalty assets. This clean-up aims to eliminate overlaps and provide a clearer investment thesis for each entity.

What Are the Key Drill Results at Proserpine?

The initial drilling at Proserpine has outlined a robust gold system. The intersection of high-grade structures and broader low-grade zones provides a dual potential for mining methods. The siliceous sandstone unit has been identified as a favorable host, guiding future exploration targeting. With less than half the strike length tested, the prospect remains highly underexplored .

How Does This Impact the Cariboo Project Pipeline?

Proserpine serves as a regional target that could complement the permitted Cariboo project. The discovery of bulk-minable material at Proserpine adds strategic value to Osisko’s land package. Future drilling will focus on defining additional resources to expand the company’s pipeline. The proximity to Cariboo allows for potential logistical synergies .

What Is the Market Sentiment on Osisko Entities?

Market sentiment varies between the two Osisko entities. Osisko Gold Royalties enjoys a Moderate Buy consensus, driven by its stable royalty model and high margins. Osisko Gold Group shows strong exploration upside but faces financial headwinds from cash burn. Investors must distinguish between the development-stage explorer and the mature royalty company .

The Proserpine results mark a significant step for Osisko Gold Group in validating its regional exploration strategy. The confirmation of a new mineralized system with open-pit potential enhances the long-term value of the Cariboo land package. Continued drilling will be critical to quantifying the resource base and determining economic viability .