X0609 4 2026-04-23 0000072444 Vaxart, Inc. VXRT 0001244823 BREITMEYER JAMES B false C/O VAXART, INC. 310 UTAH AVENUE, SUITE 150 SOUTH SAN FRANCISCO CA 94080 1 0 Common Stock 2026-04-23 4 A 0 78800 0 A 78800 D Stock Option (right to buy) 0.7399 2026-04-23 4 A 0 157400 0 A 2036-04-23 Common Stock 157400 157400 D Grant of shares upon vesting of restricted stock units. The shares underlying the award shall vest in equal installments on each of the first three anniversaries of the grant date, subject to the reporting person's continuing service on the Board of Directors (the "Board"). The shares subject to this option shall vest in equal installments on each of the first three anniversaries of the grant date, subject to the reporting person's continuing service on the Board. This Form 4 is being filed late due to delays in receiving EDGAR access codes. /s/ Edward Berg, attorney-in-fact for James B. Breitmeyer 2026-05-01