ODV Current Report: Exhibit 99.1 press release furnished; Form 40-F filer

Rhea-AI Filing Summary

Osisko Development Corp. submitted a Current Report on Form 6-K indicating it files annual reports under Form 40-F. The report attaches one exhibit: Exhibit 99.1, described as a press release. The filing lists the company's principal executive office in Montréal, Quebec and is signed by Alexander Dann, Chief Financial Officer and Vice President Finance, certifying the report.

This report is administrative in nature: it provides notice that a press release is furnished to regulators and investors and confirms the company’s reporting form and authorized signer. There are no financial tables, earnings figures, or material transactions disclosed in this submission.

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 October 2025

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 October 9, 2025

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: October 9, 2025		/s/ Alexander Dann
		Alexander Dann
		Chief Financial Officer and VP Finance

FAQ

What did Osisko Development (ODV) file in this Form 6-K?

Osisko Development filed a Form 6-K furnishing a press release as Exhibit 99.1 and confirming it files annual reports under Form 40-F.

Does the 6-K include financial results or material transactions for ODV?

No. The submission contains no financial tables, earnings data, or material transaction details.

Who signed the Form 6-K for Osisko Development (ODV)?

The report is signed by Alexander Dann, who is identified as Chief Financial Officer and Vice President Finance.

Where is Osisko Development's principal executive office located?

The address listed is Montréal, Quebec, specifically 1100 Avenue des Canadiens-de-Montréal, Suite 300.

What does Exhibit 99.1 represent in this filing?

Exhibit 99.1 is described in the filing as a press release furnished with the Form 6-K.