UNITED
STATES
SECURITIES
AND EXCHANGE COMMISSION
Washington,
D.C. 20549
FORM
6-K
REPORT
OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16
UNDER
THE SECURITIES EXCHANGE ACT OF 1934
For
the month of July, 2026
Commission
File Number: 001-38064
COSCIENS
Biopharma Inc.
(Translation
of registrant’s name into English)
c/o
Borden Ladner Gervais, LLP
22
Adelaide St. West, Suite 3400
Bay
Adelaide Centre, East Tower
Toronto
ON M5H 4E3
(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 ☐
On
July 3, 2026, the previously announced consolidation (the “Consolidation”) of the common shares (the “Common Shares”)
of COSCIENS Biopharma Inc. (the “Company”) on the basis of a ratio of one post-Consolidation Common Share for every 150 pre-Consolidation
Common Shares (the “Consolidation Ratio”), and the immediate subsequent split (the “Split”) of the Common Shares
on the basis of 50 Common Shares for every one post-Consolidation Common Share (collectively, the “Share Capital Amendment”),
became effective (the “Effective Date”). Shareholders who held fewer than 150 Common Shares as of the close of business on
July 2, 2026 became entitled to a cash payment of US$1.60 in exchange for their pre-Consolidation Common Shares (the “Cash Consideration”).
All other shareholders participated in the Split and, as a result, will have their pre-Consolidation interest reduced by a factor of
three (subject to rounding any post-Split fractional interests). As previously announced, letters of transmittal were mailed to registered
shareholders on or about May 26, 2026 providing instructions to surrender the certificates or DRS advices evidencing their Common Shares
to the Company’s depositary and exchange agent, Computershare Investor Services Inc. (“Computershare”), for (i) in
the case of holders of 150 or more Common Shares as of the Effective Date, replacement DRS advices representing the number of Common
Shares such shareholder is entitled to as a result of the Share Capital Amendment and (ii) in the case of holders of less than 150 Common
Shares as of the Effective Date, the Cash Consideration. The Company intends to file a Form 15 with the Securities and Exchange Commission
(the “SEC”) on Monday, July 6, 2026, which is anticipated to allow the Company to suspend its reporting obligations under
the Securities Exchange Act of 1934, as amended (the “Exchange Act”).
By
suspending its reporting obligations under the Exchange Act, the Company anticipates that it will be relieved of certain costs, administrative
burdens and competitive disadvantages associated with maintaining its status as a reporting company under the Exchange Act.
The
Common Shares are expected to begin trading on a post-Share Capital Amendment basis on the Toronto Stock Exchange within two business
days of the Effective Date under the same trading symbol. The Common Shares are also listed and posted for trading on the OTCQB®
Venture Market. Upon the filing of the Form 15, no assurance can be given that the Common Shares will continue to be eligible for trading
on the OTCQB® Venture Market or any other automated quotation system operated by a national securities association.
A
copy of the press release is attached to this Form 6-K as Exhibit 99.1. The press release contains forward-looking statements and
includes cautionary statements identifying important factors that could cause actual results to differ materially from those anticipated.
DOCUMENTS
INDEX
| Exhibit |
|
Description |
| 99.1 |
|
Press Release, dated July 3, 2026. |
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.
| |
COSCIENS
Biopharma Inc. |
| |
|
|
| Date:
July 6, 2026 |
By: |
/s/
Giuliano La Fratta |
| |
Name: |
Giuliano La Fratta |
| |
Title: |
Chief Financial Officer |
Exhibit
99.1

COSCIENS
Biopharma Inc. Completes Share Capital Amendment
TORONTO,
ONTARIO, JULY 3, 2026 – COSCIENS Biopharma Inc. (TSX: CSCI) (OTCQB: CSCIF) (“COSCIENS” or the “Company”),
today announced the previously announced consolidation (the “Consolidation”) of the common shares of the Company (the
“Common Shares”) on the basis of a ratio of one post-Consolidation Common Share for every 150 pre-Consolidation Common
Shares (the “Consolidation Ratio”); and (ii) an immediate subsequent split (the “Split”) of the
Common Shares on the basis of 50 Common Shares for every one post-Consolidation Common Share (collectively, the “Share Capital
Amendment”), became effective today (the “Effective Date”).
Shareholders
who held fewer than 150 Common Shares as of the close of business yesterday became entitled to a cash payment of US$1.60 in exchange
for their pre-Consolidation Common Shares. All other shareholders participated in the Split and, as a result, will have their pre-Consolidation
interest reduced by a factor of three (subject to rounding any post-Split fractional interests).
The
Common Shares are expected to begin trading on a post-Share Capital Amendment basis on the TSX within two business days of the Effective
Date under the same trading symbol.
As
previously announced, letters of transmittal were mailed to registered shareholders on or about May 26, 2026 providing instructions to
surrender the certificates or DRS advices evidencing their Common Shares to the Company’s depositary and exchange agent, Computershare
Investor Services Inc. (“Computershare”), for (i) in the case of holders of 150 or more Common Shares as of the Effective
Date, replacement DRS advices representing the number of Common Shares such shareholder is entitled to as a result of the Share Capital
Amendment and (ii) in the case of holders of less than 150 Common Shares as of the Effective Date, the Cash Consideration. Copies of
the letters of transmittal are available on the Company’s SEDAR+ profile at http://www.sedarplus.ca.
The
Company is expected to proceed with filing a Form 15 with the U.S. Securities and Exchange Commission on July 6, 2026 which is anticipated
to allow the Company to suspend its reporting obligations under the U.S. Securities and Exchange Act of 1934, as amended.

About
COSCIENS Biopharma Inc.
COSCIENS
is a holding company, operating through its subsidiaries. COSCIENS’s principal operating subsidiary, Ceapro Inc. (“Ceapro”)
is focused on the development and commercialization of natural, plant-based active ingredients derived from oats and other renewable
plant resources, using proprietary manufacturing and extraction technologies. Ceapro’s primary active ingredient business activities
relate to the development and commercialization of natural products for personal care, cosmetic, human and animal health industries using
proprietary technology, natural, renewable resources and developing innovative products, technologies and delivery systems.
The
Company’s common shares are listed on the TSX under the symbol “CSCI” and are listed and posted for trading on the
OTCQB® Venture Market under the symbol “CSCIF”. For more information, please visit COSCIENS’ website at www.cosciensbio.com.
Forward-Looking
Statements
Certain
statements in this news release, referred to herein as “forward-looking statements”, constitute “forward-looking statements”
within the meaning of the United States Private Securities Litigation Reform Act of 1995, as amended, and “forward- looking information”
under the provisions of Canadian securities laws. All statements, other than statements of historical fact, that address circumstances,
events, activities, or developments that could or may or will occur are forward-looking statements. When used in this news release, words
such as “anticipate”, “assume”, “believe”, “could”, “expect”, “forecast”,
“future”, “goal”, “guidance”, “intend”, “likely”, “may”, “would”
or the negative or comparable terminology as well as terms usually used in the future and the conditional are generally intended to identify
forward-looking statements, although not all forward- looking statements include such words. Forward-looking statements in this news
release include, but are not limited to, statements relating to the day on which the Common Shares will begin trading on the Toronto
Stock Exchange on a post-Share Capital Amendment basis and the filing of a Form 15 with the Securities Exchange Commission and the suspension
of the Company’s reporting obligations in the U.S. in connection therewith.
These
statements are based on current expectations and assumptions, including factors or assumptions factors or assumptions that were applied
in drawing a conclusion or making a forecast or projection, including assumptions based on historical trends, current conditions and
expected future developments. Since forward-looking statements relate to future events and conditions, by their very nature they require
making assumptions and involve inherent risks and uncertainties. The Company cautions that although it is believed that the assumptions
are reasonable in the circumstances, these risks and uncertainties give rise to the possibility that actual results may differ materially
from those expressed or implied by such forward-looking statements, including but not limited to the factors described in “Risks
Relating to Us and Our Business” in the Company’s Annual Report on Form 20-F for the year ended December 31, 2025. Given
these risks, undue reliance should not be placed on these forward-looking statements, which apply only as of their dates. We disclaim
any obligation to update any such risks or uncertainties or to publicly announce any revisions to any of the forward-looking statements
contained herein to reflect future results, events or developments, unless required to do so by a governmental authority or applicable
law.
Issuer
Contact:
Peter
H. Puccetti
President,
CEO and Chairman of the Board
pp@cosciensbio.com
Giuliano
La Fratta
Chief
Financial Officer
glafratta@cosciensbio.com
Investor
Contact:
IR@cosciensbio.com