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 May 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 May 26, 2026
99.2		Indenture, dated May 20, 2026
99.3		Form of Capped Call Confirmation Bid Form

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: May 26, 2026	/s/ Alexander Dann
	Alexander Dann
	Chief Financial Officer and VP Finance

Osisko Development Corp. 6-K