X0508 4 2025-03-24 0000072444 Vaxart, Inc. VXRT 0001652204 Tucker Sean C/O VAXART, INC. 170 HARBOR WAY, SUITE 300 SOUTH SAN FRANCISCO CA 94080 1 SVP, Chief Scientific Officer 0 Common Stock 2025-03-24 4 A 0 406000 0 A 744403 D Common Stock 51465 I By joint tenancy with Frances Chang and Sean Tucker Common Stock 9060 I By Spouse Stock Option (right to buy) 0.5126 2025-03-24 4 A 0 610000 0 A 2035-03-24 Common Stock 610000 610000 D Grant of shares upon vesting of restricted stock units. 25% of the shares underlying the award shall vest on each anniversary of the vesting commencement date of March 24, 2025, so that the restricted stock units would be fully vested on the fourth anniversary of the vesting commencement date. The shares subject to this stock option shall vest as to 25% of the shares underlying the grant on March 24, 2026, the first anniversary of the date that vesting commenced, and thereafter in 36 equal monthly installments such that the stock option shall be fully vested on March 24, 2029. /s/ Edward Berg, Attorney-in-Fact 2025-03-26