# EDGAR Filing Document

**Accession Number:** 0001431852
**File Stem:** 0000000000-25-010731
**Filing Date:** 2025-9
**Character Count:** 4172
**Document Hash:** 479c71301360f54ac37f27bf7c96f127
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000000000-25-010731.hdr.sgml**: 20260603

**ACCESSION NUMBER**: 0000000000-25-010731

**CONFORMED SUBMISSION TYPE**: UPLOAD

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20250930

**FILED FOR**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Osisko Development Corp.
- **CENTRAL INDEX KEY:** 0001431852
- **STANDARD INDUSTRIAL CLASSIFICATION:** GOLD & SILVER ORES [1040]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 000000000
- **STATE OF INCORPORATION:** Z4
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** UPLOAD
- **SEC FILE NUMBER:** 333-290216

**BUSINESS ADDRESS:**
- **STREET 1:** 1100 AVENUE DES CANADIENS-DE-MONTREAL
- **STREET 2:** SUITE 300
- **CITY:** MONTREAL
- **STATE:** A8
- **ZIP:** H3B 2S2
- **BUSINESS PHONE:** 514 940-0685

**MAIL ADDRESS:**
- **STREET 1:** 1100 AVENUE DES CANADIENS-DE-MONTREAL
- **STREET 2:** SUITE 300
- **CITY:** MONTREAL
- **STATE:** A8
- **ZIP:** H3B 2S2

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Ringbolt Ventures Ltd.
- **DATE OF NAME CHANGE:** 20080408
**PUBLIC REFERENCE ACCESSION NUMBER**: 0001104659-25-089529

## Text-Extract

```

                                                            September 30, 2025

Sean Roosen
Chief Executive Officer
Osisko Development Corp.
1100 Avenue des Canadiens-de-Montr  al
Suite 300
Montr  al, Qu  bec
H3B 2S2
Canada

       Re: Osisko Development Corp.
           Registration Statement on Form F-3
           Filed September 12, 2025
           File No. 333-290216
Dear Sean Roosen:

       We have conducted a limited review of your registration statement and
have the
following comments.

        Please respond to this letter by amending your registration statement
and providing
the requested information. If you do not believe a comment applies to your
facts and
circumstances or do not believe an amendment is appropriate, please tell us why
in your
response.

       After reviewing any amendment to your registration statement and the
information
you provide in response to this letter, we may have additional comments.

Registration Statement on Form F-3
General

1.     We note you have incorporated by reference your Annual Report on Form
40-F for
       fiscal year ended December 31, 2024, as well as your NI 43-101 Technical
Report,
       Feasibility Study for the Cariboo Gold Project on Form 6-K, which does
not provide
       the mining disclosure requirements of subpart 1300 of Regulation S-K and
the
       technical report summary requirements in Item 601(b)(96). See for
example the
       technical report summary required under Item 1302(b)(2) of Regulation
S-K. Section
       II.H.1.i. of the Final Rule    Modernization of Property Disclosures for
Mining
       Registrants    (October 31, 2018) provides "the sole group of Canadian
registrants that
 September 30, 2025
Page 2

       could continue to report pursuant to Canadian disclosure requirements
following
       adoption of the revised mining disclosure rules would be those Canadian
issuers that
       report pursuant to the Multijurisdictional Disclosure System (   MJDS
)."

       Please provide us with your analysis supporting your determination that
you are
       currently eligible to file under the MJDS.
        We remind you that the company and its management are responsible for
the accuracy
and adequacy of their disclosures, notwithstanding any review, comments, action
or absence
of action by the staff.

       Refer to Rules 460 and 461 regarding requests for acceleration. Please
allow adequate
time for us to review any amendment prior to the requested effective date of
the registration
statement.

      Please contact Michael Purcell at 202-551-5351 or Irene
Barberena-Meissner at 202-
551-6548 with any questions.

                                                           Sincerely,

                                                           Division of
Corporation Finance
                                                           Office of Energy &
Transportation
cc:   Thomas Rose

```

### Attached PDF Documents

**Attachment 1:** `filename1`

_No text found in this document._