Sec Form 4 Filing - Markham Richard J @ Vaxart, Inc. - 2018-02-13

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Markham Richard J 2. Issuer Name and Ticker or Trading Symbol Vaxart, Inc. [ AVIR] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director X __ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O CARE CAPITAL LLC, 47 HULFISH STREET, SUITE 310 3. Date of Earliest Transaction (MM/DD/YY) 02/13/2018 (Street) PRINCETON, NJ08542 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 02/13/2018 A 30,793,670 A 30,793,670 I See Footnote ( 2 )

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Markham Richard J C/O CARE CAPITAL LLC47 HULFISH STREET, SUITE 310 PRINCETON, NJ08542 X X Signatures /s/ Richard Markham 02/15/2018 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Consists of 30,793,670 aggregate shares of Aviragen Therapeutics, Inc. ("Aviragen") common stock received by Care Capital Investments III, LP ("Investments III") and Care Capital Offshore Investments III, LP ("Offshore III") upon conversion of shares of Vaxart, Inc. ("Vaxart") in connection with the merger of Vaxart into Agora Merger Sub, Inc., a wholly owned subsidiary of Aviragen (the "Merger"). In connection with the closing of the Merger, each share of Vaxart common stock was converted into 0.2211 shares of Aviragen common stock. On the closing date of the Merger, the closing price of Aviragen's common stock was $0.82 per share. Following the Merger, Aviragen effected a reverse stock split at a ratio of one new share for every eleven shares of Aviragen common stock outstanding. The effects of such reverse stock split is not reflected here. ( 2 )Consists of (i) 30,287,856 shares held by Investments III and (ii) 505,814 shares held by Offshore III. Care Capital III LLC is the general partner of Investments III LP and Offshore III (collectively, "Care Capital") and as a result, Care Capital III LLC has the ultimate power to vote or direct the vote and to dispose or direct the disposition of such shares. The reporting person, Jan Leschly, Jerry N. Karabelas and David R. Ramsay are the four managing members at Care Capital III LLC, and in their capacity as such, may be deemed to exercise shared voting and investment power over the shares held by Care Capital. The reporting person is a managing member of Care Capital III LLC, and serves as a representative of Care Capital on Aviragen's board of directors. The reporting person disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

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