Exhibit 23.1
Consent of Independent Registered Public Accounting Firm
We hereby consent to the incorporation by reference in this Registration Statement on Form S-8 of our report dated March 14, 2024 (which includes an explanatory paragraph relating to Vaxart, Inc.’s ability to continue as a going concern), relating to the consolidated financial statements appearing in the entity’s Annual Report on Form 10‑K as of and for the years ended December 31, 2023 and 2022.
/s/ WithumSmith+Brown, PC
San Francisco, California
March 14, 2024
