Steven Lo - 04 Dec 2025 Form 4 Insider Report for Vaxart, Inc. (VXRT)

Role: President, Chief Exec Officer, Director
Signature: /s/ Edward Berg, Attorney-in-Fact
Issuer symbol: VXRT
Transactions as of: 04 Dec 2025
Transactions value $: -$20,037
Form type: 4
Filing time: 08 Dec 2025, 21:43:35 UTC
Previous filing: 19 May 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Lo Steven	President, Chief Exec Officer, Director	C/O VAXART, INC., 170 HARBOR WAY, SUITE 300, SOUTH SAN FRANCISCO	/s/ Edward Berg, Attorney-in-Fact	08 Dec 2025	0001501959

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	VXRT	Common Stock	Award	$0	+151K	+8.95%	$0.00	1.84M	04 Dec 2025	Direct	F1, F2
transaction	VXRT	Common Stock	Tax liability	-$20K	-54.2K	-2.94%	$0.37	1.79M	04 Dec 2025	Direct	F3
holding	VXRT	Common Stock						100K	04 Dec 2025	By the Lo Family Trust

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Grant of shares upon vesting of restricted stock units, which fully vested on December 4, 2025.
F2	This amount includes 57,723 shares acquired under the Vaxart, Inc. 2022 Employee Stock Purchase Plan.
F3	Represents shares that have been withheld by the Issuer to satisfy its income tax withholding and remittance obligations in connection with the net settlement of RSUs vested as of December 4, 2025.