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Osisko Gold Group Inc. (OGG) approved full-scale construction of its 100%-owned Cariboo Gold Project in British Columbia, targeting first gold in early 2029 and commercial production in H2 2029 after an expected 30‑month construction period from August 1, 2026. The remaining go-forward capital obligation is estimated at C$990 million, after C$272 million spent to July 31, 2026 and assuming about C$117 million of equipment leasing.
At a spot gold price of US$4,350/oz, Cariboo shows an after-tax NPV5% of C$3.2 billion, after-tax IRR of 42.7%, payback of 1.8 years from commercial production, and average annual free cash flow of C$642 million in the first five years. Mine life is 10 years with average throughput of 4,900 tpd and total payable gold of 1,894 koz. Construction is expected to support 613 peak construction jobs and 525 permanent operating jobs.
To support funding, Urion agreed to invest about US$30 million for 9,554,141 common shares at US$3.14, alongside offtake agreements with Trafigura for 100% of gold concentrate and doré in the first four years and non-binding terms for a potential up to US$120 million subordinated gold prepay facility. From August 1, 2026 to commercial production, total capital sources are estimated at C$1,637 million versus uses of C$1,435 million, implying projected surplus liquidity of about C$201 million.
Osisko Gold Group Inc. (OGG) announced a planned CFO leadership transition. Alexander Dann intends to retire and will step down as Chief Financial Officer and Vice President, Finance after a 35-year career, remaining for a transition period to support an orderly handover. As part of a succession process, Elijah Tyshynski will be appointed CFO and join the senior leadership team following this transition. The company highlights entering its next stage of growth from a position of financial strength and emphasizes Mr. Tyshynski’s extensive capital markets and infrastructure financing experience. Osisko Gold reiterates its objective of becoming an intermediate gold producer through development of its 100%-owned, fully permitted Cariboo Gold Project in British Columbia, complemented by the Tintic Project in Utah.
Osisko Gold Group Inc. (OGG) has amended and restated its existing project loan credit facility with funds advised by Appian Capital Advisory Limited, which finances development and construction of the 100%-owned, fully permitted Cariboo Gold Project in British Columbia.
The amendment reduces interest rate margins, improves covenants, and extends by 12 months the option to settle accrued interest in kind. Appian has confirmed satisfaction of key technical conditions precedent for the US$350 million second draw, including those tied to the Lowhee Zone infill drilling and ore sorting programs, and these specific conditions have been removed. The second draw remains subject to remaining construction-readiness and customary conditions, and all guarantees and security under the facility have been reaffirmed.
Osisko Gold Group Inc. reports initial diamond drilling results from the Proserpine greenfield target, about 7 km from its 100%-owned Cariboo Gold Project in central British Columbia. The company states that drilling confirms a gold mineralized system with open pit potential. Fourteen holes totaling 6,463 m intersected mineralization wherever target depths were reached, outlining a footprint of roughly 1.0 km x 0.5 km that remains open in all directions, with mineralization from near surface to depths exceeding 400 m.
Highlighted intercepts include 95.93 g/t Au over 4.60 m at 71 m vertical depth in hole PSP-26-004, including 873.00 g/t Au over 0.50 m, and 5.46 g/t Au over 8.60 m at 77 m vertical depth in PSP-26-001. Drilling has resumed with three rigs and may expand as work continues at Proserpine Southeast and begins at Proserpine Northwest. As context, the permitted, feasibility-stage Cariboo Gold Project hosts probable mineral reserves of 2.071 million ounces of contained gold, plus additional measured, indicated and inferred mineral resources, and these exploration results are described as preliminary and based on incomplete data.
Osisko Gold Group Inc. reported final results from its Lowhee Zone infill drilling program at the 100%-owned Cariboo Gold Project in British Columbia. The 17,072 metres of drilling in 185 diamond drill holes were used in an internal reconciliation against the existing resource block model and broadly validated the underlying mine-planning assumptions.
In Zone 1, preliminary stope optimization indicated approximately 30% more tonnes and 6% more gold ounces at about 18% lower grade than modeled, while Zone 2 showed about 8% fewer tonnes and 8% more ounces at roughly 16% higher grade. The company states these localized differences illustrate expected deposit variability, support continued use of existing assumptions for future infill drilling, and confirm potential upside where no stopes were previously modeled. Average core recovery improved from about 92% in 2025 to 94% in 2026.
Osisko Gold notes that, following completion of Appian Capital Advisory’s review and subject to other conditions, it anticipates satisfying technical conditions precedent to access the remaining undrawn US$350 million under its senior secured project loan facility in Q3 2026. The Cariboo Gold Project hosts probable mineral reserves of 2.071 million ounces of contained gold alongside additional measured, indicated and inferred resources.
Osisko Gold Group Inc., a foreign private issuer based in Toronto, furnished a Form 6-K for July 2026. The report includes as Exhibit 99.1 a Certificate and Articles of Amendment dated July 14, 2026, documenting a formal amendment to the company’s corporate charter documents.
Osisko Gold Group Inc. completed its corporate name change from Osisko Development Corp. (and the French equivalent) to Osisko Gold Group Inc., effective July 14, 2026, after shareholder and regulatory approvals. Common shares are expected to begin trading under the new ticker OGG on the TSX Venture Exchange and New York Stock Exchange at market open on July 20, 2026.
Trading symbols and CUSIP/ISIN identifiers for the company’s listed common share purchase warrants are also being updated. The company indicates there are no anticipated interruptions to trading, and existing share and warrant certificates remain valid, with no exchange or other action required from securityholders.
The new name is described as reflecting a focus on a primary gold and precious-metals asset base in North America, centered on the fully permitted, 100%-owned Cariboo Gold Project in British Columbia and complemented by the Tintic Project in Utah. The company has also rebranded its website to www.osiskogold.ca.
Osisko Development Corp. reported new deep surface drilling results from eleven diamond drill holes at its 100%-owned Cariboo Gold Project in central British Columbia. The program completed 8,971 metres of drilling, with about 65% of metres testing areas outside the current mineral resource footprint.
Highlight intercepts include 13.19 g/t gold over 3.60 metres at 596 metres vertical depth, 6.40 g/t gold over 6.30 metres at 326 metres depth, 6.17 g/t gold over 7.10 metres at 517 metres depth and 28.90 g/t gold over 0.50 metres at 718 metres depth. All eleven holes intersected mineralization above 1.8 g/t gold, supporting the presence of high-grade mineralization below the current average 350-metre deposit depth.
The company also plans a corporate rebrand, changing its name to Osisko Gold Group Inc. and its stock symbol from ODV to OGG on both the TSX Venture Exchange and New York Stock Exchange, with the changes expected to take effect on July 20, 2026.
Osisko Development Corp. reported the results of its annual and special meeting held on June 23, 2026. All seven management-nominated directors were elected, with support ranging from 83.13% of votes cast for David Danziger to 99.65% for Keith McKay. Sean Roosen received 98.91% of votes in favour.
Shareholders approved PricewaterhouseCoopers LLP as auditor for 2026 with 99.90% of votes for. They also passed two special resolutions: one to move the Company’s registered office from Québec to Ontario, approved with 99.88% of votes for, and another to change the Company’s name to Osisko Gold Group Inc., approved with 99.46% of votes for.
Osisko Development Corp. reported the results of its annual and special shareholder meeting held on June 23, 2026. Shareholders voted 226,058,370 common shares, representing about 74.19% of outstanding shares as of the record date.
All director nominees were elected, generally receiving more than 83% of votes cast, and PricewaterhouseCoopers LLP was re-appointed as independent auditor with 99.90% support. Shareholders also approved moving the company’s registered office from Québec to Ontario and changing its name to Osisko Gold Group Inc., with 99.88% and 99.46% support respectively. The company expects to update its stock ticker symbol on the NYSE and TSXV to OGG in connection with the name change.
As part of its board compensation review, the company granted 247,129 deferred share units to independent directors under its omnibus equity incentive plan.