Osisko Development Corporation announced the appointment of David Danziger as an Independent Non-Executive Director to the Company's Board of Directors, effective December 14, 2022. Mr. Danziger is a Chartered Professional Accountant with over 30 years of experience in audit, accounting and management consulting and has over 25 years of experience in the resources sector. He is currently the Senior Vice President, Assurance and the National Leader of Public Companies at MNP LLP, Chartered Professional Accountants, Canada's fifth accounting firm.

Mr. Danziger has extensive experience in advising public and private companies in North America on significant public markets transactions, complex accounting and regulatory matters, and draws on many years of experience serving as a director for many publicly listed companies on the TSX, TSXV, CSE and the New York Stock Exchange. Mr. Danziger is currently the Chair of Sports Ventures Holdings, a director of Euro Sun Mining Inc., and is a member of the advisory committee to the TSXV exchange. Mr. Danziger is a past member of the Ontario Securities Commission's (OSC) Advisory Committee on Small and Medium Sized Enterprises, as well as the CPA/PDAC Taskforce on IFRS for Mining.

David graduated from the University of Toronto with a Bachelor of Commerce and is a Chartered Professional Accountant (CPA), qualifying as a Chartered Accountant (CA) in 1983.