Osisko Development (ODV) to rebrand as Osisko Gold Group and add director

Rhea-AI Filing Summary

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.

Key Figures

Meeting date: June 23, 2026 Meeting time: 1:30 p.m. Eastern Ownership of Cariboo Gold Project: 100% owned

3 metrics

Meeting date June 23, 2026 Annual and special meeting of shareholders

Meeting time 1:30 p.m. Eastern Scheduled start time for shareholder meeting

Ownership of Cariboo Gold Project 100% owned Flagship Cariboo Gold Project in British Columbia

Key Terms

annual and special meeting, forward-looking statements, fully permitted, intermediate gold producer, +1 more

5 terms

annual and special meeting regulatory

"announces its upcoming annual and special meeting (the "Meeting")"

forward-looking statements regulatory

"This news release contains "forward-looking information" ... and "forward-looking statements""

Forward-looking statements are predictions or plans that companies share about what they expect to happen in the future, like estimating sales or profits. They matter because they help investors understand a company's outlook, but since they are based on guesses and assumptions, they can sometimes be wrong.

fully permitted financial

"continued de-risking and advancement of its fully permitted Cariboo Gold Project"

intermediate gold producer financial

"The Company's objective is to become an intermediate gold producer"

TSX Venture Exchange regulatory

"Neither the TSX Venture Exchange nor its Regulation Services Provider"

A junior stock exchange in Canada where smaller, early-stage companies list shares to raise capital and gain public visibility. Think of it as a farmers’ market for young businesses: it offers investors a chance to buy into fast-growing but higher-risk ventures, with looser listing rules and typically lower liquidity than major exchanges. It matters because performance and financing on this exchange can signal growth prospects or risk for investors.

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Form 6-K: How Foreign Companies Report to the SEC →

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

Form 6-K

REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of June 2026

Commission File Number: 001-41369

Osisko Development Corp.
(Translation of registrant's name into English)

1100 Avenue des Canadiens-de-Montréal, Suite 300, Montréal, Quebec H3B 2S2
(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.
Form 20-F [   ]      Form 40-F [ X ]

EXHIBIT INDEX

Exhibit Number		Description
99.1		Press Release dated June 2, 2026

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

		Osisko Development Corp.
		(Registrant)
Date: June 2, 2026		/s/ Alexander Dann
		Alexander Dann
		Chief Financial Officer and VP Finance

EXHIBIT 99.1

Osisko Development Announces Nomination of Keith McKay to the Board of Directors and Proposes Name Change to Osisko Gold Group Inc. at Upcoming Annual and Special Meeting of Shareholders

MONTREAL, June 02, 2026 (GLOBE NEWSWIRE) -- Osisko Development Corp. (NYSE: ODV, TSXV: ODV) ("Osisko Development" or the "Company") announces its upcoming annual and special meeting (the "Meeting") of holders of common shares of the Company (the "Shareholders"), to be held on June 23, 2026 at 1:30 p.m. (Eastern time) at First Canadian Place, 100 King St. W., Suite 3400, Toronto, Ontario, M5X 1A4.

Director Nomination

As non-executive director Mr. Duncan Middlemiss will not be standing for re-election at the upcoming Meeting, the Company has nominated Mr. Keith McKay for election to the Board of Directors. The Company has also nominated the other incumbent directors for re-election at the Meeting.

"On behalf of the Board and management team, I would like to thank Duncan for his valuable contributions and dedicated service," said Sean Roosen, Chairman and CEO. "We've greatly benefited from his guidance and commitment during his tenure, and we wish him all the best in his future endeavours."

Mr. McKay is a Chartered Professional Accountant with over 45 years of experience in finance and executive leadership, primarily in the mining and natural resources sector. He has extensive expertise in public company reporting, financing, mergers and acquisitions, risk management, and governance. Mr. McKay currently serves as Chief Financial Officer of Dalradian Resources Inc., a position he has held since June 2010. Mr. McKay has significant board experience, having served as a director and Audit Committee Chair of several publicly listed mining companies, including Osisko Mining Inc., O3 Mining Inc., and Noront Resources Ltd. Over the course of his career, he has held senior executive roles, including Chief Financial Officer of Continental Gold Ltd., Andina Minerals Inc., and Aurelian Resources Inc., as well as senior finance positions with AMEC Canada, Algoma Steel Inc., and Rio Algom Ltd. Mr. McKay obtained his Chartered Accountant designation in 1981 with Coopers & Lybrand (now PricewaterhouseCoopers LLP) and holds a Bachelor of Arts degree from Western University.

Proposed Name Change

At the upcoming Meeting, the Company is proposing that Shareholders consider a change of the Company's name to "Osisko Gold Group Inc." to better reflect its evolution toward a primary gold and precious metals-focused asset base in North America. Management believes the proposed name change is timely as the Company enters a new chapter, underpinned by the continued de-risking and advancement of its fully permitted Cariboo Gold Project.

Additional information regarding the Meeting, matters to be considered at the Meeting, and voting can be found in the management information circular of Osisko Development dated May 11, 2026, filed with securities regulators and available on the Company's website at www.osiskodev.com and on SEDAR+ (www.sedarplus.ca) under Osisko Development's issuer profile.

ABOUT OSISKO DEVELOPMENT CORP.

Osisko Development Corp. is a continental North American gold development company focused on past producing mining camps with district-scale potential. The Company's objective is to become an intermediate gold producer through the development of its flagship, fully permitted, 100%-owned Cariboo Gold Project, located in central British Columbia, Canada. Its project pipeline is complemented by the Tintic Project, located in the historic East Tintic mining district in Utah, U.S.A., a brownfield property with significant exploration potential, extensive historical mining data, and access to established infrastructure. Osisko Development is focused on developing long-life mining assets in mining-friendly jurisdictions while maintaining a disciplined approach to capital allocation, development risk management, and mineral inventory growth.

For further information, contact:

Sean Roosen	Philip Rabenok
Chairman and CEO	Vice President, Investor Relations
Email: sroosen@osiskodev.com	Email: prabenok@osiskodev.com
Tel: +1 (514) 940-0685	Tel: +1 (437) 423-3644

CAUTION REGARDING FORWARD-LOOKING STATEMENTS

This news release contains "forward-looking information" (within the meaning of applicable Canadian securities laws) and "forward-looking statements" (within the meaning of the U.S. Private Securities Litigation Reform Act of 1995, as amended) (collectively, "forward-looking statements"). Such forward-looking statements are identified with words such as "may", "will", "would", "could", "anticipate", "believe", "expect", "plan", "intend", "potential", "estimate", "propose", "project", "outlook", "foresee", "objective", "strategy", variants of these words or the negative or comparable terminology, as well as terms usually used in the future and the conditional. Information contained in forward-looking statements is based upon certain material assumptions that were applied in drawing a conclusion or making a forecast or projection, including the assumptions, qualifications, limitations or statements pertaining to: the proposed timing of the Meeting; the proposed name change and anticipated benefits thereof; the Company's objective to become an intermediate gold producer; the Company's evolution toward a primary gold and precious metals-focused asset base in North America; the continued de-risking and advancement of the Cariboo Gold Project; the ability to develop the Cariboo Gold Project and its status as being fully permitted; the exploration potential and prospectivity (if any) of its properties. Such forward-looking statements are based on a number of risks, uncertainties and assumptions which may cause actual results or other expectations to differ materially from those anticipated and which may prove to be incorrect. These assumptions include, but are not limited to: obtaining requisite shareholder approval at the Meeting; the absence of further work stoppages or suspensions at the Project; favourable regulatory conditions and approvals; the ability to maintain adequate personnel and contractor levels; the absence of unforeseen ground conditions or other geological challenges; the availability of necessary equipment, supplies and infrastructure; and general economic and market conditions. Actual results could differ materially due to a number of factors, including, without limitation: receipt of requisite shareholder approval at the Meeting; risks related to the exploration, development and operation of the Cariboo Gold Project; health, safety and security incidents; regulatory delays or changes in regulatory framework and applicable laws; labour shortages or disputes; general economic and market conditions and business conditions in the mining industry; fluctuations in commodity and currency exchange rates; changes in regulatory framework and applicable laws, as well as those risks and factors disclosed in the Company's most recent annual information form, financial statements and management's discussion and analysis as well as other public filings on SEDAR+ (www.sedarplus.ca) and on EDGAR (www.sec.gov). Although the Company believes the expectations conveyed by the forward-looking statements are reasonable based on information available as of the date hereof, no assurances can be given as to future results, levels of activity and achievements. The Company disclaims any obligation to update any forward-looking statements, whether as a result of new information, future events or results or otherwise, except as required by law. Forward-looking statements are not guarantees of performance and there can be no assurance that these forward-looking statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking statements.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this news release. No stock exchange, securities commission or other regulatory authority has approved or disapproved the information contained herein.

FAQ

What did Osisko Development Corp. (ODV) announce in this Form 6-K?

Osisko Development announced its June 23, 2026 annual and special meeting, a proposed corporate name change to "Osisko Gold Group Inc.", and the nomination of experienced mining executive Keith McKay to its Board of Directors, replacing non-executive director Duncan Middlemiss, who will not seek re-election.

When and where is Osisko Development’s 2026 annual and special meeting?

The annual and special meeting is scheduled for June 23, 2026 at 1:30 p.m. Eastern time. It will be held at First Canadian Place, 100 King St. W., Suite 3400, Toronto, Ontario, providing a formal venue for shareholder voting on board and name change matters.

What name change is Osisko Development (ODV) proposing to shareholders?

Osisko Development is asking shareholders to approve changing its name to "Osisko Gold Group Inc." at the June 23, 2026 meeting. Management states this new name is intended to better reflect its evolution toward a primary gold and precious metals-focused asset base in North America.

Who is Keith McKay, the new board nominee at Osisko Development?

Keith McKay is a Chartered Professional Accountant with over 45 years of finance and executive experience, mainly in mining. He currently serves as CFO of Dalradian Resources Inc. and has held senior roles at several public mining companies, including prior directorships and Audit Committee Chair positions.

Which projects are central to Osisko Development’s growth strategy?

Osisko Development highlights its fully permitted, 100%-owned Cariboo Gold Project in British Columbia as its flagship asset. The company also emphasizes the Tintic Project in Utah, a brownfield property in a historic mining district with significant exploration potential and access to existing infrastructure.

Where can Osisko Development (ODV) shareholders find more details about the meeting?

Shareholders can review the management information circular dated May 11, 2026 for full details on meeting matters and voting. The circular is available on Osisko Development’s website, www.osiskodev.com, and on SEDAR+ under the company’s issuer profile for regulatory access.

Filing Exhibits & Attachments

1 document

Press Releases

• EX-99.1 PRESS RELEASE 10.5 KB