• Osisko Development held its annual and special shareholder meeting on June 23, 2026.
• Shareholders backed the slate of director nominees for the board.
• PricewaterhouseCoopers was reappointed as independent auditor.
• Shareholders adopted an amendment to move the registered office from Québec to Ontario; the change itself was not confirmed as completed.
• Shareholders authorized a corporate name change to Osisko Gold Group Inc.; the new name, ticker change to OGG remain pending execution.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Osisko Development Corp. published the original content used to generate this news brief via GlobeNewswire (Ref. ID: 202606240810PRIMZONEFULLFEED9751856) on June 24, 2026, and is solely responsible for the information contained therein.