Daniel Radden

c/o Armistice Capital, LLC

510 Madison Avenue

7^th Floor

New York, NY 10022

Telephone Number: (212) 231-4930

(Name, Address and Telephone Number of Person Authorized to Receive

Notices and Communications)

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The name of the issuer is Vaxart, Inc., a Delaware corporation (the "Issuer"). The address of the Issuer's principal executive offices is 385 Oyster Point Boulevard, Suite 9A, South San Francisco, California 94080. This Amendment No. 4 to Schedule 13D relates to the Issuer's Common Stock, $0.10 par value (collectively, the "Shares").

Armistice Capital is an investment adviser registered with the Securities and Exchange Commission that is principally engaged in the business of providing investment management services to private investment vehicles, including the Master Fund. The principal business address of Armistice Capital is 510 Madison Avenue, 7^th Floor, New York, New York 10022.

The Master Fund is principally engaged in the business of investing in securities. The principal business address of the Master Fund is c/o dms Corporate Services Ltd., 20 Genesis Close, P.O. Box 314, Grand Cayman KY1-1104, Cayman Islands. The board of directors of the Master Fund consists of Steven Boyd, Kevin A. Phillip and Gregory S. Bennett.

Steven Boyd is the managing member of Armistice Capital and a director of the Master Fund. Mr. Boyd’s business address is 510 Madison Avenue, 7^th Floor, New York, New York 10022.

The Reporting Persons are filing this Schedule 13D/A to report a change in their respective beneficial ownership percentages of the Shares, as indicated in Item 5 below.

Mr. Boyd and Keith Maher, a Managing Director at Armistice Capital, currently serve as members of the Issuer’s board of directors (the “Board”).

The Reporting Persons purchased the Shares for investment in the ordinary course of their investment activities based on the Reporting Persons’ belief that the Shares, when purchased, were undervalued and represented an attractive investment opportunity. The Reporting Persons intend to review their investment in the Issuer on a continuing basis. Depending on various factors including, without limitation, the Issuer’s financial position, the price levels of the Shares, conditions in the securities markets and general economic and industry conditions, the Reporting Persons may in the future take such actions with respect to their investment in the Issuer as they deem appropriate including, without limitation, engaging in communications with management and/or the Board, engaging in discussions with stockholders of the Issuer and others about the Issuer and the Reporting Persons’ investment, reshaping the Issuer's corporate strategy, recommending business development transactions, proposing changes to management, operations and the structure of the Board (including the composition of the Board), purchasing additional Shares, selling some or all of their Shares, engaging in short selling of or any hedging or similar transaction with respect to the Shares, or changing their intention with respect to any and all matters referred to in subparagraphs (a) - (j) of Item 4 of Schedule 13D.

Except as otherwise set forth herein, the Reporting Persons do not have any present plans or proposals which would relate to, or result in, the matters set forth in subparagraphs (a) – (j) of Item 4 of Schedule 13D. However, subject to market conditions and in compliance with applicable securities laws, the Reporting Persons reserve the right, at a later date, to effect one or more of such changes or transactions in the number of Shares they may be deemed to beneficially own in open-market or privately negotiated transactions, on such terms and at such times as the Reporting Persons may deem advisable.

As of the date hereof, each of the Reporting Persons may be deemed to be the beneficial owner of 15,950,000 Shares, constituting 22.5% of the Shares, based upon 70,734,077 Shares outstanding as of the date hereof. Each of the Reporting Persons has the sole power to vote or direct the vote of 0 Shares and the shared power to vote or direct the vote of 15,950,000 Shares. Each of the Reporting Persons has the sole power to dispose or direct the disposition of 0 Shares and the shared power to dispose or direct the disposition of 15,950,000 Shares.

The transactions in the Shares by the Reporting Persons during the past sixty days are set forth on Exhibit B. Each reported transaction was an open-market transaction.

(e)

N/A

In addition to the Shares beneficially owned by the Reporting Persons as reported herein, the Master Fund currently holds 20,757,576 currently exercisable warrants of the Issuer, subject to blocker provisions that prevents the Master Fund from exercising the warrants if it would be more than a 4.99% or 9.99% (as applicable) beneficial owner of the Shares following any such exercise.

The Reporting Persons do not have any contract, arrangement, understanding or relationship with any person with respect to securities of the Issuer that is not described herein or in a prior Schedule 13D filed by the Reporting Persons in respect of the Issuer.

Exhibit A:      Joint Filing Agreement

Exhibit B:      Schedule of Transactions in the Shares

Name: Steven Boyd

Title: Managing Member

Name: Steven Boyd

Title: Director

Name: Steven Boyd

Title: Managing Member

Name: Steven Boyd

Title: Director