| UNITED STATES |
| SECURITIES AND EXCHANGE COMMISSION |
| Washington, D.C. 20549 |
| Notice of Effectiveness |
| Effectiveness Date: |
March 18,
2026 |
| Accession Number: |
0001493152-26-010110 |
| Submission Type: |
POS AM |
| CIK: |
0001113423 |
| Company Name: |
COSCIENS Biopharma Inc. |
| File Number: |
333-239019 |
|
