On September 17, 2021, Vaxart, Inc. entered into the Second Amendment to Lease Agreement with Healthpeak Properties, Inc., a Maryland corporation. The Second Amendment amends the Lease Agreement, dated April 17, 2015, as amended by that certain First Amendment to Lease Agreement, dated September 17, 2019. Currently, the Company has 5,188 square feet of rentable space located at 290 Utah Avenue, South San Francisco, California 94080 (the Existing Premises").

Effective as of April 1, 2022, the Second Amendment expands the above premises to include an additional 24,544 square feet located at 310 Utah Avenue, South San Francisco, California 94080 (the Expanded Premises"). The Second Amendment also extends the term of this lease until March 31, 2029. In connection with the Existing Premises, the Company will continue to pay the base rent currently in effect until May 1, 2025, after which the Company will pay a monthly rent of $37,388.18, subject to yearly increases as specified in the Second Amendment.

Commencing on April 1, 2022, the Company will pay a monthly rent of $159,536.00 for the Expanded Premises, subject to yearly increases as specified in the Second Amendment.