COSCIENS Biopharma Inc 6-K, filed Sep 9, 2021

UNITEDSTATES

SECURITIESAND EXCHANGE COMMISSION

Washington,D.C. 20549

FORM6-K

REPORTOF FOREIGN PRIVATE ISSUER

PURSUANTTO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of September 2021

Commission File Number: 001-38064

AeternaZentaris Inc.

(Translation of registrant’s name into English)

315Sigma Drive, Summerville, South Carolina, USA 29486

(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 ☒

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):

DOCUMENTSINDEX

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SIGNATURE

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.

| \(3\) |

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Exhibit99.1

AeternaZentaris to Present at the H.C. Wainwright 23^rd^ Annual Global Investment Conference

CHARLESTON,S.C., September 8, 2021 — Aeterna Zentaris Inc. (NASDAQ: AEZS) (TSX: AEZS) (the “Company”), a specialty biopharmaceutical company developing and commercializing a diversified portfolio of pharmaceutical and diagnostic products, today announced that Dr. Klaus Paulini, Chief Executive Officer of Aeterna, will present at the virtual H.C. Wainwright 23^rd^ Annual Global Investment Conference taking place September 13-15, 2021.

In addition to the presentation, management will be available to participate in virtual one-on-one meetings with qualified members of the investor community who are registered to attend the conference. For more information about the conference, please visit the conference website.

A video webcast of the presentation will be available for viewing on-demand beginning Monday, September 13, 2021, at 7:00 AM ET for those registered for the event and will be accessible on the Events page in the Investors section of the Company’s website (www.zentaris.com). The webcast replay will be archived for 90 days following the event.

AboutAeterna Zentaris Inc.

Aeterna Zentaris is a specialty biopharmaceutical company developing and commercializing a diversified portfolio of pharmaceutical and diagnostic products focused on areas of significant unmet medical need. The Company’s lead product, macimorelin (Macrilen^™^), is the first and only U.S. FDA and European Commission approved oral test indicated for the diagnosis of adult growth hormone deficiency (AGHD). The Company is leveraging the clinical success and compelling safety profile of macimorelin to develop it for the diagnosis of childhood-onset growth hormone deficiency (CGHD) in collaboration with Novo Nordisk. The Company is also leveraging the clinical success and compelling safety profile of macimorelin to develop it for the diagnosis of childhood-onset growth hormone deficiency (CGHD), an area of significant unmet need.

Aeterna Zentaris is dedicated to the development of therapeutic assets and has recently taken steps to establish a growing preclinical pipeline to potentially address unmet medical needs across a number of indications, including neuromyelitis optica spectrum disorder (NMOSD), hypoparathyroidism and amyotrophic lateral sclerosis (ALS; Lou Gehrig’s disease). Additionally, the Company is developing an oral prophylactic bacterial vaccine against SARS-CoV-2, the virus that causes COVID-19.

For more information, please visit www.zentaris.com and connect with the Company on Twitter, LinkedIn and Facebook.

InvestorContact:

Jenene Thomas

JTC Team

T (US): +1 (833) 475-8247

E: aezs@jtcir.com