Osisko Development Corp. — Interim / Quarterly Report 2025

Nov 8, 2025

6-K 1 odv-20250930x6k.htm 6-K Enhanced HTML document created with Toppan Merrill Bridge 11.1.0.82 Created on: 11/7/2025 11:47:20 PM (UTC)

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 November 2025

Commission File Number: 001-41369

Osisko Development Corp.

(Translation of registrant’s name into English)

1100 Avenue des Canadiens-de-Montréal, Suite 300

(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 ☒

EXHIBIT INDEX

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Exhibit	​	​
​	​	​
99.1		Unaudited Condensed Interim Consolidated Financial Statements for the three and nine months ended September 30, 2025 and 2024
​	​	​
99.2	​	Management’s Discussion and Analysis for the three and nine months ended September 30, 202 5
​	​	​
99.3	​	Form 52-109F2 Certification of Interim Filings Full Certificate - CEO
​	​	​
99.4	​	Form 52-109F2 Certification of Interim Filings Full Certificate - CFO

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: November 7, 2025	/s/ Alexander Dann
​	Alexander Dann
​	Chief Financial Officer and VP Finance