Company: CSCIF
Filing Date: 2025-04-09
Form Type: 20-F
Source: 0001641172-25-003456
Chunk: 259

Company: COSCIENS Biopharma Inc.
Filing Date: 2025-04-09
Form: 20-F
Item: Item 19
Chunk 259
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  11.3*       Audit                                                                                                                                                                                                 
  12.1**      Certification of the Principal Executive Officer pursuant to §302 of the Sarbanes-Oxley Act of 2002                                                                                                   
  12.2**      Certification of the Principal Financial Officer pursuant to §302 of the Sarbanes-Oxley Act of 2002                                                                                                   
  13.1**      Certification of the Principal Executive Officer pursuant to 18 U. S. C. Section 1350 as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002                                            
  13.2**      Certification of the Principal Financial Officer pursuant to 18 U. S. C. Section 1350 as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002                                            
  15.1**      Consent of Deloitte LLP                                                                                                                                                                               
  15.2**      Consent                                                                                                                                                                                               
  16.2**      Concurrence Letter from Raymond Chabot Grant Thornton LLP                                                                                                                                             
  97.1*       COSCIENS Executive Compensation Clawback Policy (incorporated by reference to Exhibit 97.1 of the Registrant’s Annual Report of Form 20-F/A for the financial year ended December 31, 2024 filed ...  
              Code of Ethical Conduct                                                                                                                                                                               
  *           Incorporated                                                                                                                                                                                          
  **          Filed                                                                                                                                                                                                 

Exhibit
Index

101.
INS XBRL Instance Document

101.
SCH XBRL Taxonomy Extension Schema

101.
CAL XBRL Taxonomy Extension Schema Calculation Linkbase

101.
DEF XBRL Taxonomy Extension Schema Definition Linkbase

101.
LAB XBRL Taxonomy Extension Schema Label Linkbase

101.
PRE XBRL Taxonomy Extension Schema Presentation Linkbase

  112  

SIGNATURES

The
registrant hereby certifies that it meets all of the requirements for filing on Form 20-F and that it has duly caused and authorized
the undersigned to sign this annual report on its behalf.

  COSCIENS                     
  /s/                          
  Gilles                       
  President                    

Date:
April 9, 2025