Exhibit 3.3

CERTIFICATE OF AMENDMENT
OF THE
CERTIFICATE OF INCORPORATION (AS AMENDED)
OF
DIFFUSION PHARMACEUTICALS INC.

DIFFUSION PHARMACEUTICALS INC., a corporation incorporated and existing under and by virtue of the General Corporation Law of the State of Delaware (the “Corporation”) does hereby certify:

FIRST: That, at a meeting of the Board of Directors of the Corporation (the “Board of Directors”) on March 29, 2023 a resolution was duly adopted setting forth a proposed amendment to the Certificate of Incorporation (as amended) of the Corporation in the form set forth below (the “Amendment”), declaring said Amendment to be advisable and calling for consideration of said proposed Amendment by the stockholders of the Corporation.

“RESOLVED, that the Certificate of Incorporation (as amended) of the Corporation shall be amended by adding at the end of subsection A of Article IV thereof the following: ‘Effective upon the effective time of this Certificate of Amendment of the Certificate of Incorporation with the Secretary of State of the State of Delaware (the “Effective Time”), each one and a half (1.5) shares of Common Stock issued and outstanding immediately prior to the Effective Time shall, automatically and without the necessity of any further action, be changed, reclassified and combined into one (1) share of Common Stock (the “Reverse Stock Split”). No fractional shares shall be issued in connection with the Reverse Stock Split. Stockholders who otherwise would be entitled to receive fractional shares of Common Stock shall have that rounded up to one additional whole share. Each certificate that immediately prior to the Effective Time represented shares of Common Stock (“Old Certificates”), shall thereafter represent that number of shares of Common Stock into which the shares of Common Stock represented by the Old Certificate shall have been combined, subject to the elimination of fractional shares as described above.’”

SECOND: That, thereafter, pursuant to the resolution of the Board of Directors, the proposed Amendment was approved by the stockholders of the Corporation at the special meeting of stockholders on August 15, 2023.

THIRD: That the Amendment was duly adopted in accordance with the provisions of Sections 242 of the General Corporation Law of the State of Delaware.

IN WITNESS WHEREOF, the Corporation has caused this Amendment to the Certificate of Incorporation of the Corporation (as amended) to be executed by Robert J. Cobuzzi, Jr., Ph.D., its President and Chief Executive Officer, on this 16th day of August, 2023.

DIFFUSION PHARMACEUTICALS INC.

By: /s/ Robert J. Cobuzzi, Jr., Ph.D.

Name: Robert J. Cobuzzi, Jr., Ph.D.

Title: President and Chief Executive Officer