UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549

NOTICE OF EFFECTIVENESS

Effective Date:September 14,
Aeterna Zentaris (NASDAQ:AEZS)
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Aeterna Zentaris Inc. News

Aeterna Zentaris Announces Effective Date of Share Consolidation
Wednesday 1 May 2024 (2 days ago) • GlobeNewswire Inc.
Ceapro Receives Final Court Approval for Merger with Aeterna Zentaris
Thursday 28 March 2024 (1 month ago) • GlobeNewswire Inc.
Aeterna Zentaris Reports Fourth Quarter and Full Year 2023 Financial Results and Announces Completion of Enrollment in Ongoing Pivotal DETECT-Trial for the Diagnosis of Childhood-Onset Growth Hormone Deficiency
Wednesday 27 March 2024 (1 month ago) • GlobeNewswire Inc.
Aeterna Zentaris and Ceapro Merger Approved by Securityholders at Special Meetings
Wednesday 13 March 2024 (2 months ago) • GlobeNewswire Inc.
Aeterna Zentaris and Ceapro Merger Approved by Securityholders at Special Meetings
Wednesday 13 March 2024 (2 months ago) • GlobeNewswire Inc.
Leading Independent Proxy Advisory Firm ISS Recommends Aeterna Zentaris and Ceapro Securityholders Vote FOR the Arrangement Agreement to Approve the Merger of Equals to Create a Diversified Biopharmaceutical Company
Monday 26 February 2024 (2 months ago) • GlobeNewswire Inc.
Aeterna Zentaris Issues Letter to Shareholders and Management Proxy Circular Ahead of Special Meeting of Shareholders to Approve Merger of Equals with Ceapro
Friday 16 February 2024 (3 months ago) • GlobeNewswire Inc.
Form F-1 - Registration statement for certain foreign private issuers
Friday 16 February 2024 (3 months ago) • Edgar (US Regulatory)
Form 20-F/A - Annual and transition report of foreign private issuers [Sections 13 or 15(d)]: [Amend]
Friday 16 February 2024 (3 months ago) • Edgar (US Regulatory)
Form 6-K/A - Report of foreign issuer [Rules 13a-16 and 15d-16]: [Amend]
Saturday 23 December 2023 (4 months ago) • Edgar (US Regulatory)
Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]
Thursday 14 December 2023 (5 months ago) • Edgar (US Regulatory)
Aeterna Zentaris and Ceapro Announce Merger of Equals to Create a Diversified Biopharmaceutical Company
Thursday 14 December 2023 (5 months ago) • GlobeNewswire Inc.

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