Exhibit 3.3

CERTIFICATE OF AMENDMENT

TO THE

RESTATED CERTIFICATE OF INCORPORATION
OF
ATYR PHARMA, INC.

aTyr Pharma, Inc. (the “Corporation”), a corporation organized and existing under the laws of the State of Delaware, hereby certifies as follows:

FIRST: That the name of the Corporation is aTyr Pharma, Inc. The date of the filing of its original Certificate of Incorporation with the Secretary of State of Delaware was September 8, 2005.

SECOND: That the Board of Directors of the Corporation duly adopted resolutions approving the following amendment of the Restated Certificate of Incorporation, declaring said amendment to be advisable and providing for such consideration of such amendment at the Corporation’s annual meeting of the stockholders.

THIRD: On May 6, 2020, the Corporation’s annual meeting of the stockholders was duly called and held, upon notice in accordance with Section 222 of the Delaware General Corporation Law, at which meeting the necessary number of shares as required by statute were voted in favor of the amendment.

FOURTH: The first sentence of Article IV of the Restated Certificate of Incorporation of the Corporation is hereby amended and restated to read in its entirety as follows:

The total number of shares of capital stock which the Corporation shall have authority to issue is Twenty Eight Million Seven Hundred Ten Thousand Four Hundred Fifty-Six (28,710,456), of which (i) Twenty One Million Four Hundred Twenty-Five Thousand (21,425,000) shares shall be a class designated as common stock, par value $0.001 per share (the “Common Stock”), and (ii) Seven Million Two Hundred Eighty-Five Thousand Four Hundred Fifty Six (7,285,456) shares shall be a class designated as preferred stock, par value $0.001 per share (the “Preferred Stock”), of which 72,000 shares are designated Series B Convertible Preferred Stock (“Series B Preferred Stock”), 15,957 shares are designated Series C Convertible Preferred Stock (“Series C Preferred Stock”), 2,197,499 shares are designated Series D Convertible Preferred Stock (“Series D Preferred Stock”, and together with the Series B Preferred Stock and Series C Preferred Stock, the “Designated Preferred Stock”), and Five Million (5,000,000) shares shall be undesignated preferred stock (the “Undesignated Preferred Stock”).

FIFTH: That this Certificate of Amendment to the Restated Certificate of Incorporation shall be effective on and as of the date of filing with the Secretary of State of the State of Delaware.

IN WITNESS WHEREOF, this Certificate of Amendment to the Restated Certificate of Incorporation has been executed by a duly authorized officer of this Corporation on this 6^th day of May, 2020.