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Osisko Development Corp.'s SEC filings document its Form 6-K reporting as a foreign issuer that files on Form 40-F, including press-release exhibits and notices for annual and special meetings of common shareholders. The records cover the company's North American gold-development business, led by the Cariboo Gold Project in British Columbia and complemented by the Tintic Project in Utah.
Recent filings disclose operating and financial results, Cariboo construction and pre-construction activity, Lowhee Zone drilling, Tintic small-scale mining activity, completed financings, warrant exercises, equity incentive awards and governance appointments. Meeting notices also identify common shares as the voting security class and record notice-and-access and beneficial-owner delivery arrangements.
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., through its wholly owned subsidiary Barkerville Gold Mines, entered a Support and Benefits Agreement with the District of Wells, British Columbia, to support social and economic initiatives linked to its 100%-owned, fully permitted Cariboo Gold Project as it advances toward construction.
Over a three-year term, the Agreement contemplates voluntary financial contributions of up to $3.0 million, at the Company's sole discretion and subject to continued participation, including targeted capital and operating support of $500,000 for the WILDways High School and other long-term community infrastructure priorities identified by the District.
Osisko Gold Group Inc., formerly Osisko Development Corp., reports a corporate reorganization in which it changed its name to Osisko Gold Group Inc. and moved its registered office from Québec to Ontario effective July 14, 2026. These changes, described as the Name Change and Registered Office Change, were approved at the annual and special shareholders’ meeting on June 23, 2026.
In connection with the Name Change, the company’s common shares on the TSX Venture Exchange and New York Stock Exchange now trade under the ticker “OGG”, replacing “ODV”, beginning at the start of trading on July 20, 2026. New identifiers were assigned, including common share CUSIP 68827X105 and ISIN CA68827X1050, and updated warrant symbols and CUSIP/ISIN codes on the TSXV and Nasdaq.
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.
Osisko Development Corp. reports completion of a 13,000‑meter underground infill drilling program at the Lowhee Zone of its 100%-owned, permitted Cariboo Gold Project in British Columbia, along with additional near-mine exploration drilling.
The company drilled 13,684 m on 10 m spacing, including 2,659 m of final infill and 2,995 m of extra infill and near-mine holes. Highlight intercepts include 44.68 g/t gold over 1.5 m, including 133.62 g/t over 0.5 m, and 31.64 g/t over 2.0 m, including 125.24 g/t over 0.5 m. Results will feed into an updated localized block model and mineral resource calculation. Lowhee currently hosts probable mineral reserves of 104,491 ounces of gold (923,162 tonnes grading 3.52 g/t), about 5% of Cariboo’s total probable reserves of 2.071 million ounces.