Osisko Development Corp.

Osisko Development Corp. announced new infill drilling results from its Cariboo Gold Project's Lowhee Zone, including the completion of a 13,000-meter program. The results show high-grade gold intercepts, such as 44.68 g/t Au over 1.5 m and 25.78 g/t Au over 2.5 m, providing a better understanding of vein corridor geometries and local variability. Additional infill and near-mine exploration drilling also yielded significant intercepts, reinforcing potential for resource conversion and upside mineralization. Reconciliation work for an updated block model is expected to conclude in Q2 2026.

Osisko Development Corp. announced its upcoming annual and special meeting on June 23, 2026, where shareholders will consider a proposal to change the company's name to "Osisko Gold Group Inc." This rebranding aims to better reflect its strategic evolution towards a primary gold and precious metals-focused asset base in North America. Additionally, the company nominated Mr. Keith McKay, a seasoned finance and executive leader in the mining sector with over 45 years of experience, for election to the Board of Directors, replacing outgoing non-executive director Mr. Duncan Middlemiss.

Osisko Development Corp. announced the closing of an additional US$75.0 million in 4.125% convertible senior notes due 2031, bringing total gross proceeds from its offerings to US$300.0 million. This includes the full exercise of the initial purchasers' option and a private placement with Double Zero Capital. The estimated net proceeds of approximately US$250.0 million (after capped call costs) will be used for the development of the Cariboo Gold Project and general corporate purposes. The company also entered into capped call transactions to effectively increase the conversion premium from 25% to 100%, mitigating potential dilution.

Osisko Development Corp. announced its intention to satisfy the fourth of five deferred payments for the Tintic Project acquisition, completed in May 2022. The payment of US$2,500,000 (C$3,453,000) will be made entirely in common shares. The company expects to issue 871,683 Common Shares at a deemed price of approximately C$3.9613 per share, pending approval from the TSX Venture Exchange.

Osisko Development Corp. announced the closing of its US$225.0 million private placement of 4.125% convertible senior notes due 2031. The company expects net proceeds of approximately US$215.9 million, which will be used for capped call transactions, development of the Cariboo Gold Project, and general corporate purposes. An affiliate also agreed to purchase US$50.0 million in notes, and initial purchasers have an option for an additional US$25.0 million.

Osisko Development Corp. priced its US$275.0 million aggregate principal amount of 4.125% convertible senior notes due 2031. The offering includes US$225.0 million to qualified institutional buyers and US$50.0 million to an affiliated investor. The notes have a 25.0% conversion premium to the May 20, 2026, closing share price of US$2.94 and an initial conversion price of approximately US$3.68 per share. Net proceeds, estimated at US$265.9 million (or US$290.0 million if the option is fully exercised), will fund the Cariboo Gold Project development, general corporate purposes, and the cost of capped call transactions.

Osisko Development Corp. announced the pricing of US$275.0 million aggregate principal amount of 4.125% convertible senior notes due 2031 in a private placement. The notes were offered to qualified institutional buyers and an affiliate, with an initial conversion premium of approximately 25.0%. Net proceeds, estimated at approximately US$215.9 million from the offering and US$50.0 million from the private placement, are intended for the development of the Cariboo Gold Project, general corporate purposes, and to cover the cost of associated cash-settled capped call transactions.

Osisko Development Corp. announced its intention to offer US$225.0 million in convertible senior notes due 2031 through a private placement, with an option for initial purchasers to buy an additional US$25.0 million. An affiliated investor has also indicated interest in purchasing up to US$50.0 million in a concurrent private placement, bringing the total potential offering to US$275.0 million (excluding the initial purchasers' option). The net proceeds are intended for the development of the Cariboo Gold Project, general corporate purposes, and to fund cash-settled capped call transactions designed to offset potential economic dilution.

Osisko Development Corp. announced its Annual and Special Meeting of Shareholders will take place on June 23, 2026, in Toronto, Ontario. Shareholders will consider and vote on several key proposals, including the election of seven directors and the appointment of PricewaterhouseCoopers LLP as the independent auditor. Significantly, the agenda also includes resolutions to change the Corporation's registered office from Québec to Ontario and to change the company's name to "Osisko Gold Group Inc.".

Osisko Development Corp. announced the appointment of Mr. Greg Perrins as Vice President, Sustainable Development, effective May 18, 2026. Mr. Perrins brings over 15 years of experience in Indigenous relations and public sector engagement in British Columbia, having previously served as Senior Manager, Indigenous Relations at BC Hydro and held roles with the Province of British Columbia. This appointment is expected to strengthen the company's approach to sustainable project development, particularly for its Cariboo Gold Project.