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Table of Contents ( Mark One ) ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31 , 2020 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 FORM 10 - K □ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from Title of each class Delaware ( State or other jurisdiction of incorporation or organization ) Common stock , $ 0.0001 par value 170 Harbor Way , Suite 300 , South San Francisco , CA 94080 ( Address of principal executive offices , including zip code ) OR Commission file number : 001-35285 Vaxart , Inc. ( Exact Name of Registrant as Specified in its Charter ) Large accelerated filer Non - accelerated filer VXRT 59-1212264 ( IRS Employer Identification No. ) Securities registered pursuant to Section 12 ( b ) of the Act : Trading symbol ( 650 ) 550-3500 ( Registrant's telephone number , including area code ) Securities registered pursuant to Section 12 ( g ) of the Act : None Indicate by check mark if the registrant is a well - known seasoned issuer , as defined in Rule 405 of the Securities Act . Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15 ( d ) of the Act . Indicate by check mark whether the registrant ( 1 ) has filed all reports required to be filed by Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 during the preceding 12 months ( or for such shorter period that the registrant was required to file such reports ) , and ( 2 ) has been subject to such filing requirements for the past 90 days . Yes No Name of each exchange on which registered The Nasdaq Capital Market Accelerated filer Smaller reporting company Emerging growth company Yes No Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S - T ( §232.405 of this chapter ) during the preceding 12 months ( or for such shorter period that the registrant was required to submit such files ) . Yes No Yes No Indicate by check mark whether the registrant is a large accelerated filer , an accelerated filer , a non - accelerated filer , a smaller reporting company , or an emerging growth company . See the definitions of " large accelerated filer , " " accelerated filer , " " smaller reporting company , " and " emerging growth company " in Rule 12b - 2 of the Exchange Act . If an emerging growth company , indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13 ( a ) of the Exchange Act . Indicate by check mark whether the registrant has filed a report on and attestation to its management's assessment of the effectiveness of its internal control over financial reporting under Section 404 ( b ) of the Sarbanes - Oxley Act ( 15 U.S.C. 7262 ( b ) ) by the registered public accounting firm that prepared or issued its audit report . Indicate by check mark whether the registrant is a shell company ( as defined in Rule 12b - 2 of the Exchange Act ) . The aggregate market value of the Registrant's common stock held by non - affiliates of the Registrant as of the last business day of the Registrant's most recently completed second fiscal quarter , June 30 , 2020 , based on the last reported sales price of the Registrant's common stock of $ 8.85 per share , was $ 842,046,746 . As of February 24 , 2021 , the registrant had a total of 117,766,672 shares of common stock issued and outstanding . DOCUMENTS INCORPORATED BY REFERENCE Yes No ✓