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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.
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.
Osisko Development Corp. is preparing for its June 23, 2026 annual and special shareholder meeting, where investors will vote on key corporate matters. The company has nominated veteran mining finance executive Keith McKay to join the Board of Directors, as non-executive director Duncan Middlemiss will not stand for re-election.
Shareholders will also be asked to approve a proposed name change to "Osisko Gold Group Inc.", which management says better reflects its focus on gold and precious metals assets in North America, centered on the fully permitted, 100%-owned Cariboo Gold Project in British Columbia and the Tintic Project in Utah.
Osisko Development Corp. closed an additional US$75 million of 4.125% convertible senior notes due 2031, bringing its total recent convertible note financing to US$300 million. The company expects net proceeds of about US$290 million, before the cost of capped call transactions, to advance its Cariboo Gold Project and for general corporate purposes.
Osisko spent approximately US$40.2 million on cash-settled capped call transactions designed to offset potential economic dilution, effectively lifting the conversion premium from 25% to 100%. The notes carry a 4.125% coupon, are unsecured and covenant-light, and can be settled in cash, shares, or a mix at the company’s election, with an option to redeem after three years under specified conditions.
Major shareholder Double Zero Capital invested US$50 million in a concurrent private placement, and now holds common shares, warrants and notes representing about 23.89% of the company on a partially diluted basis, subject to a 19.9% ownership blocker unless certain approvals are obtained.
Double Zero Capital and related parties filed an amended Schedule 13D on Osisko Development Corp., reporting beneficial ownership of 63,632,697 common shares, or 19.9% of the class. This includes 48,591,775 shares held directly and 15,040,922 shares issuable under warrants, all limited by a 19.9% Beneficial Ownership Blocker.
The amendment also discloses that Double Zero agreed to purchase $50,000,000 principal amount of 4.125% convertible senior notes due 2031 in a private placement, for an aggregate price of $50,017,187.50 funded from its working capital. The notes pay 4.125% interest semi-annually from December 15, 2026, mature on June 15, 2031, and are initially convertible at 272.1088 shares per $1,000, subject to the same 19.9% ownership cap.