COSCIENS Biopharma (CSCI) 6-K Annual and Special Meeting

UNITED STATESSECURITIES AND EXCHANGE COMMISSIONWashington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUERPURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of March 2019

Commission File Number: 001-38064

Aeterna Zentaris Inc.(Translation of registrant’s name into English)

315 Sigma Drive, Suite 302DSummerville, 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):  ☐

DOCUMENTS INDEX

Exhibit	Description
99.1	Notice of Meeting and Record Date (amended).

SIGNATURE

Pursuant to the requirements of the Securities Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Date: March 27, 2019
	AETERNA ZENTARIS INC.
	/s/Leslie Auld
	Leslie Auld
	Chief Financial Officer