Lo Steven 4

What Happened Steven Lo, President, CEO and a director of Vaxart, received equity awards on March 16, 2026: 846,500 shares reported as an award (RSUs) and 1,543,000 shares reported as a derivative award (stock option grant). Both grants are reported at $0.00 (no cash paid); combined, the awards cover 2,389,500 shares. This filing records grant/award activity (not an open-market purchase or sale).

Key Details

• Transaction date: 2026-03-16; Form 4 filed 2026-03-18 (timely filing).
• Award amounts and reported price: 846,500 shares @ $0.00 (RSU award); 1,543,000 derivative shares @ $0.00 (option grant). Total = 2,389,500 shares.
• Shares owned after transaction: Not specified in the provided excerpt of the filing.
• Footnotes: F1 relates to the RSU award vesting schedule; F2 describes the option vesting schedule.
• Transaction code: A (award/grant).

Context

• RSU vesting (per F1): 25% of the RSUs vest on each anniversary of the vesting commencement date of March 16, 2026, with the award fully vested on the fourth anniversary (March 16, 2030).
• Option vesting (per F2): 25% of the option shares vest on March 16, 2027 (first anniversary), then the remainder vests in 36 equal monthly installments, with full vesting on March 16, 2030. The filing shows grant awards rather than exercises or sales; no immediate cashless exercise or sale is indicated.