144 0001959565 XXXXXXXX LIVE 0000072444 Vaxart, Inc. 001-35285 170 Harbor Way Suite 300 San Francisco CA 94080 650-550-3500 Lee Phillip E (VXRT) Former Executive Officer Common Stock Muriel Siebert & Co, Inc.

15 Exchange Place Jersey City NJ 07302

81364 37427.44 228222953 05/27/2025 NASDAQ Common Stock 12/08/2023 Deferred stock award RSU grant from Issuer N 66501 12/08/2023 Grant Common Stock 12/15/2023 Deferred stock award RSU grant from Issuer N 11245 12/15/2023 Grant Common Stock 06/12/2024 Deferred stock award RSU grant from Issuer N 3618 06/12/2024 Grant Y The shares of Common Stock to be sold were issued upon vesting of certain Restricted Stock Units awarded by Vaxart, Inc. 05/27/2025 /s/ Phillip Lee