Tucker Sean 4

4 · Vaxart, Inc. · Filed Mar 18, 2026

AI-generated summary of this filing

Updated Mar 18, 2026

Vaxart (VXRT) SVP Sean Tucker Receives RSUs and Stock Options

What Happened

Sean Tucker, Senior Vice President & Chief Scientific Officer of Vaxart, received two awards on 2026-03-16: 200,000 restricted stock units (RSUs) and a 410,000-share derivative award (stock option). Both grants were reported at $0.00 cash cost to the insider (typical for compensation awards) and are subject to vesting schedules.

Key Details

Transaction date and price: 2026-03-16; reported acquisition price $0.00 for both awards.
RSU vesting (Footnote F1): 200,000 RSUs vest 25% on each anniversary of the March 16, 2026 vesting commencement date (fully vested on the fourth anniversary).
Option vesting (Footnote F2): 410,000-share option vests 25% on March 16, 2027, then in 36 equal monthly installments, fully vested on March 16, 2030.
Shares owned after transaction: Not specified in the Form 4 filing.
Filing timeliness: Form 4 filed on 2026-03-18 for a 2026-03-16 transaction — filed within the standard two-business-day deadline.

Context

These transactions are internal compensation awards (not open-market purchases or sales). RSUs and option grants are routine executive compensation and do not by themselves signal buying or selling in the market. The option is a typical time-based grant that requires continued service and future vesting to realize value.

Form 4

Period: 2026-03-16

SVP, Chief Scientific Officer

Transactions

Award
Common Stock
[F1]
2026-03-16+200,000→ 931,225 total
Award
Stock Option (right to buy)
[F2]
2026-03-16+410,000→ 410,000 total
Exercise: $0.68Exp: 2036-03-16→ Common Stock (410,000 underlying)

Holdings

Common Stock
(indirect: By joint tenancy with Frances Chang and Sean Tucker)
51,465
Common Stock
(indirect: By Spouse)
9,060

Footnotes (2)

[F1]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 16, 2026, so that the restricted stock units would be fully vested on the fourth anniversary of the vesting commencement date.
[F2]The shares subject to this stock option shall vest as to 25% of the shares underlying the grant on March 16, 2027, 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 16, 2030.

Signature

/s/ Edward Berg, Attorney-in-Fact|2026-03-18

1 file