VXRT

Vaxart, Inc.

Insider trading activity for Vaxart, Inc., straight from SEC Form 4 filings. Net figures below count open-market buys and sales only — grants, option exercises and tax withholding are excluded because they are compensation, not decisions to trade.

Past 3 months

net buying

Bought(0 · 0 insiders): $0
Sold(0 · 0 insiders): $0

Past 6 months

+$6.5K

net buying

Bought(1 · 1 insiders): $6.5K
Sold(0 · 0 insiders): $0

Past 12 months

+$30.6K

net buying

Bought(5 · 2 insiders): $30.6K
Sold(0 · 0 insiders): $0

Transaction history

The 63 most recent Form 4 transactions.

Open in screener →

Insider transactions, newest first: date, security, transaction type, size and a link to the filing each row came from.
Date	Insider	Role	Type	Shares	Price	Value	Δ Own	Filing
Jul 16	Watson W. Mark	Director	AGRANT◆	78,700	—	—	—	Open the original filing on SEC.gov
Jul 16	Watson W. Mark	Director	AGRANT	39,400	—	—	+29.4%	Open the original filing on SEC.gov
Jul 16	Wheadon David E.	Director	AGRANT◆	78,700	—	—	—	Open the original filing on SEC.gov
Jul 16	Wheadon David E.	Director	AGRANT	39,400	—	—	+84.3%	Open the original filing on SEC.gov
Jul 16	Heron Elaine J	Director	AGRANT◆	78,700	—	—	—	Open the original filing on SEC.gov
Jul 16	Heron Elaine J	Director	AGRANT	39,400	—	—	+40.8%	Open the original filing on SEC.gov
Jul 16	Breitmeyer James B	Director	AGRANT◆	16,610	—	—	—	Open the original filing on SEC.gov
Jul 16	Breitmeyer James B	Director	AGRANT	8,315	—	—	+10.5%	Open the original filing on SEC.gov
Jul 16	Finney Kevin	Director	AGRANT◆	78,700	—	—	—	Open the original filing on SEC.gov
Jul 16	Finney Kevin	Director	AGRANT	39,400	—	—	+19.2%	Open the original filing on SEC.gov
May 22	Watson W. Mark	Director	PBUY	10,000	$0.653	$6.5K	+8.1%	Open the original filing on SEC.gov
May 19	Grasman Jeroen Nicolaas	Chief Financial Officer	FTAX	31,395	$0.61	$19.2K	-5.4%	Open the original filing on SEC.gov
Apr 23	Breitmeyer James B	Director	AGRANT◆	157,400	—	—	—	Open the original filing on SEC.gov
Apr 23	Breitmeyer James B	Director	AGRANT	78,800	—	—	—	Open the original filing on SEC.gov
Mar 28	Tucker Sean	SVP, Chief Scientific…	FTAX	3,924	$0.65	$2.6K	-0.4%	Open the original filing on SEC.gov
Mar 28	Cummings James F.	Chief Medical Officer	FTAX	3,292	$0.65	$2.1K	-0.4%	Open the original filing on SEC.gov
Mar 24	Tucker Sean	SVP, Chief Scientific…	FTAX	36,418	$0.694	$25.3K	-3.9%	Open the original filing on SEC.gov
Mar 24	Lo Steven	President, Chief Exec…	FTAX	126,028	$0.694	$87.5K	-4.8%	Open the original filing on SEC.gov
Mar 24	Cummings James F.	Chief Medical Officer	FTAX	30,551	$0.694	$21.2K	-3.2%	Open the original filing on SEC.gov
Mar 24	Berg Edward B	SVP, General Counsel	FTAX	36,418	$0.694	$25.3K	-4.6%	Open the original filing on SEC.gov
Mar 18	Tucker Sean	SVP, Chief Scientific…	FTAX	8,072	$0.6346	$5.1K	-0.9%	Open the original filing on SEC.gov
Mar 18	Lo Steven	President, Chief Exec…	FTAX	22,425	$0.6346	$14.2K	-0.9%	Open the original filing on SEC.gov
Mar 18	Cummings James F.	Chief Medical Officer	FTAX	6,772	$0.6346	$4.3K	-0.7%	Open the original filing on SEC.gov
Mar 18	Berg Edward B	SVP, General Counsel	FTAX	8,072	$0.6346	$5.1K	-1.0%	Open the original filing on SEC.gov
Mar 16	Tucker Sean	SVP, Chief Scientific…	AGRANT◆	410,000	—	—	—	Open the original filing on SEC.gov
Mar 16	Tucker Sean	SVP, Chief Scientific…	AGRANT	200,000	—	—	+27.4%	Open the original filing on SEC.gov
Mar 16	Lo Steven	President, Chief Exec…	AGRANT◆	1.5M	—	—	—	Open the original filing on SEC.gov
Mar 16	Lo Steven	President, Chief Exec…	AGRANT	846,500	—	—	+47.4%	Open the original filing on SEC.gov
Mar 16	Grasman Jeroen Nicolaas	Chief Financial Officer	AGRANT◆	455,000	—	—	—	Open the original filing on SEC.gov
Mar 16	Grasman Jeroen Nicolaas	Chief Financial Officer	AGRANT	227,000	—	—	+64.9%	Open the original filing on SEC.gov
Mar 16	Cummings James F.	Chief Medical Officer	AGRANT◆	455,000	—	—	—	Open the original filing on SEC.gov
Mar 16	Cummings James F.	Chief Medical Officer	AGRANT	227,000	—	—	+30.8%	Open the original filing on SEC.gov
Mar 16	Berg Edward B	SVP, General Counsel	AGRANT◆	225,000	—	—	—	Open the original filing on SEC.gov
Mar 16	Berg Edward B	SVP, General Counsel	AGRANT	115,000	—	—	+16.8%	Open the original filing on SEC.gov
Feb 2	Tucker Sean	SVP, Chief Scientific…	FTAX	9,265	$0.6085	$5.6K	-1.3%	Open the original filing on SEC.gov
Feb 2	Cummings James F.	Chief Medical Officer	FTAX	7,965	$0.6085	$4.8K	-1.1%	Open the original filing on SEC.gov
Feb 2	Berg Edward B	SVP, General Counsel	FTAX	9,265	$0.6085	$5.6K	-1.3%	Open the original filing on SEC.gov
Dec 4, 2025	Lo Steven	President, Chief Exec…	FTAX	54,153	$0.37	$20K	-2.9%	Open the original filing on SEC.gov
Dec 4, 2025	Lo Steven	President, Chief Exec…	AGRANT	151,351	—	—	+8.9%	Open the original filing on SEC.gov
Nov 17, 2025	Heron Elaine J	Director	PBUY	16,783	$0.405	$6.8K	+21.0%	Open the original filing on SEC.gov
Nov 17, 2025	Heron Elaine J	Director	PBUY★	23,217	$0.393	$9.1K	+41.0%	Open the original filing on SEC.gov
Nov 17, 2025	Watson W. Mark	Director	PBUY	5,000	$0.407	$2K	+4.2%	Open the original filing on SEC.gov
Nov 17, 2025	Watson W. Mark	Director	PBUY	15,000	$0.41	$6.2K	+14.4%	Open the original filing on SEC.gov
Aug 15, 2025	Finney Kevin	Director	PBUY	50,000	$0.37	$18.5K	+32.3%	Open the original filing on SEC.gov
Aug 15, 2025	Finney Kevin	Director	PBUY	50,000	$0.35	$17.5K	+47.7%	Open the original filing on SEC.gov
Jul 30, 2025	Finney Kevin	Director	PBUY	25,874	$0.38	$9.8K	+32.8%	Open the original filing on SEC.gov
Jul 29, 2025	Watson W. Mark	Director	PBUY	10,000	$0.405	$4.1K	+10.6%	Open the original filing on SEC.gov
Jul 28, 2025	Finney Kevin	Director	PBUY	20,000	$0.4	$8K	+34.0%	Open the original filing on SEC.gov
Jul 25, 2025	Finney Kevin	Director	PBUY▲	20,000	$0.39	$7.8K	+51.4%	Open the original filing on SEC.gov
Jul 17, 2025	Finney Kevin	Director	PBUY	794	$0.38	$302	+2.1%	Open the original filing on SEC.gov
Jun 13, 2025	Watson W. Mark	Director	AGRANT◆	95,400	—	—	—	Open the original filing on SEC.gov
Jun 13, 2025	Watson W. Mark	Director	AGRANT	16,000	—	—	+20.5%	Open the original filing on SEC.gov
Jun 13, 2025	Wheadon David E.	Director	AGRANT◆	95,400	—	—	—	Open the original filing on SEC.gov
Jun 13, 2025	Wheadon David E.	Director	AGRANT	16,000	—	—	+52.0%	Open the original filing on SEC.gov
Jun 13, 2025	Heron Elaine J	Director	AGRANT◆	95,400	—	—	—	Open the original filing on SEC.gov
Jun 13, 2025	Heron Elaine J	Director	AGRANT	16,000	—	—	+39.4%	Open the original filing on SEC.gov
Jun 13, 2025	Finney Michael J.	Director	AGRANT◆	95,400	—	—	—	Open the original filing on SEC.gov
Jun 13, 2025	Finney Michael J.	Director	AGRANT	16,000	—	—	+2.3%	Open the original filing on SEC.gov
Jun 13, 2025	Finney Kevin	Director	AGRANT◆	36,392	—	—	—	Open the original filing on SEC.gov
Jun 13, 2025	Finney Kevin	Director	AGRANT	6,103	—	—	+19.1%	Open the original filing on SEC.gov
May 19, 2025	Lo Steven	President, Chief Exec…	PBUY	100,000	$0.49	$49K	—	Open the original filing on SEC.gov
May 19, 2025	Grasman Jeroen Nicolaas	Chief Financial Officer	AGRANT◆	1M	—	—	—	Open the original filing on SEC.gov
May 19, 2025	Grasman Jeroen Nicolaas	Chief Financial Officer	AGRANT	350,000	—	—	—	Open the original filing on SEC.gov

AGRANT◆—

Watson W. Mark · DirectorJul 16

78,700 sh

AGRANT—

Watson W. Mark · DirectorJul 16

39,400 sh · +29.4% own

AGRANT◆—

Wheadon David E. · DirectorJul 16

78,700 sh

AGRANT—

Wheadon David E. · DirectorJul 16

39,400 sh · +84.3% own

AGRANT◆—

Heron Elaine J · DirectorJul 16

78,700 sh

AGRANT—

Heron Elaine J · DirectorJul 16

39,400 sh · +40.8% own

AGRANT◆—

Breitmeyer James B · DirectorJul 16

16,610 sh

AGRANT—

Breitmeyer James B · DirectorJul 16

8,315 sh · +10.5% own

AGRANT◆—

Finney Kevin · DirectorJul 16

78,700 sh

AGRANT—

Finney Kevin · DirectorJul 16

39,400 sh · +19.2% own

PBUY$6.5K

Watson W. Mark · DirectorMay 22

10,000 sh @ $0.653 · +8.1% own

FTAX$19.2K

Grasman Jeroen Nicolaas · Chief Financial…May 19

31,395 sh @ $0.61 · -5.4% own

AGRANT◆—

Breitmeyer James B · DirectorApr 23

157,400 sh

AGRANT—

Breitmeyer James B · DirectorApr 23

78,800 sh

FTAX$2.6K

Tucker Sean · SVP, Chief Scienti…Mar 28

3,924 sh @ $0.65 · -0.4% own

FTAX$2.1K

Cummings James F. · Chief Medical…Mar 28

3,292 sh @ $0.65 · -0.4% own

FTAX$25.3K

Tucker Sean · SVP, Chief Scienti…Mar 24

36,418 sh @ $0.694 · -3.9% own

FTAX$87.5K

Lo Steven · President, Chief…Mar 24

126,028 sh @ $0.694 · -4.8% own

FTAX$21.2K

Cummings James F. · Chief Medical…Mar 24

30,551 sh @ $0.694 · -3.2% own

FTAX$25.3K

Berg Edward B · SVP, General…Mar 24

36,418 sh @ $0.694 · -4.6% own

FTAX$5.1K

Tucker Sean · SVP, Chief Scienti…Mar 18

8,072 sh @ $0.6346 · -0.9% own

FTAX$14.2K

Lo Steven · President, Chief…Mar 18

22,425 sh @ $0.6346 · -0.9% own

FTAX$4.3K

Cummings James F. · Chief Medical…Mar 18

6,772 sh @ $0.6346 · -0.7% own

FTAX$5.1K

Berg Edward B · SVP, General…Mar 18

8,072 sh @ $0.6346 · -1.0% own

AGRANT◆—

Tucker Sean · SVP, Chief Scienti…Mar 16

410,000 sh

AGRANT—

Tucker Sean · SVP, Chief Scienti…Mar 16

200,000 sh · +27.4% own

AGRANT◆—

Lo Steven · President, Chief…Mar 16

1.5M sh

AGRANT—

Lo Steven · President, Chief…Mar 16

846,500 sh · +47.4% own

AGRANT◆—

Grasman Jeroen Nicolaas · Chief Financial…Mar 16

455,000 sh

AGRANT—

Grasman Jeroen Nicolaas · Chief Financial…Mar 16

227,000 sh · +64.9% own

AGRANT◆—

Cummings James F. · Chief Medical…Mar 16

455,000 sh

AGRANT—

Cummings James F. · Chief Medical…Mar 16

227,000 sh · +30.8% own

AGRANT◆—

Berg Edward B · SVP, General…Mar 16

225,000 sh

AGRANT—

Berg Edward B · SVP, General…Mar 16

115,000 sh · +16.8% own

FTAX$5.6K

Tucker Sean · SVP, Chief Scienti…Feb 2

9,265 sh @ $0.6085 · -1.3% own

FTAX$4.8K

Cummings James F. · Chief Medical…Feb 2

7,965 sh @ $0.6085 · -1.1% own

FTAX$5.6K

Berg Edward B · SVP, General…Feb 2

9,265 sh @ $0.6085 · -1.3% own

FTAX$20K

Lo Steven · President, Chief…Dec 4, 2025

54,153 sh @ $0.37 · -2.9% own

AGRANT—

Lo Steven · President, Chief…Dec 4, 2025

151,351 sh · +8.9% own

PBUY$6.8K

Heron Elaine J · DirectorNov 17, 2025

16,783 sh @ $0.405 · +21.0% own

PBUY★$9.1K

Heron Elaine J · DirectorNov 17, 2025

23,217 sh @ $0.393 · +41.0% own

PBUY$2K

Watson W. Mark · DirectorNov 17, 2025

5,000 sh @ $0.407 · +4.2% own

PBUY$6.2K

Watson W. Mark · DirectorNov 17, 2025

15,000 sh @ $0.41 · +14.4% own

PBUY$18.5K

Finney Kevin · DirectorAug 15, 2025

50,000 sh @ $0.37 · +32.3% own

PBUY$17.5K

Finney Kevin · DirectorAug 15, 2025

50,000 sh @ $0.35 · +47.7% own

PBUY$9.8K

Finney Kevin · DirectorJul 30, 2025

25,874 sh @ $0.38 · +32.8% own

PBUY$4.1K

Watson W. Mark · DirectorJul 29, 2025

10,000 sh @ $0.405 · +10.6% own

PBUY$8K

Finney Kevin · DirectorJul 28, 2025

20,000 sh @ $0.4 · +34.0% own

PBUY▲$7.8K

Finney Kevin · DirectorJul 25, 2025

20,000 sh @ $0.39 · +51.4% own

PBUY$302

Finney Kevin · DirectorJul 17, 2025

794 sh @ $0.38 · +2.1% own

AGRANT◆—

Watson W. Mark · DirectorJun 13, 2025

95,400 sh

AGRANT—

Watson W. Mark · DirectorJun 13, 2025

16,000 sh · +20.5% own

AGRANT◆—

Wheadon David E. · DirectorJun 13, 2025

95,400 sh

AGRANT—

Wheadon David E. · DirectorJun 13, 2025

16,000 sh · +52.0% own

AGRANT◆—

Heron Elaine J · DirectorJun 13, 2025

95,400 sh

AGRANT—

Heron Elaine J · DirectorJun 13, 2025

16,000 sh · +39.4% own

AGRANT◆—

Finney Michael J. · DirectorJun 13, 2025

95,400 sh

AGRANT—

Finney Michael J. · DirectorJun 13, 2025

16,000 sh · +2.3% own

AGRANT◆—

Finney Kevin · DirectorJun 13, 2025

36,392 sh

AGRANT—

Finney Kevin · DirectorJun 13, 2025

6,103 sh · +19.1% own

PBUY$49K

Lo Steven · President, Chief…May 19, 2025

100,000 sh @ $0.49

AGRANT◆—

Grasman Jeroen Nicolaas · Chief Financial…May 19, 2025

1M sh

AGRANT—

Grasman Jeroen Nicolaas · Chief Financial…May 19, 2025

350,000 sh

Filing record

How quickly insiders here report their trades. Section 16 allows two business days from the transaction.

4 of 37 filings we hold were filed after the two-business-day deadline. The furthest past the deadline was 20 business days late.

Form 4 filings made after the two-business-day deadline, with the transaction date, the filing date and the number of business days between them.
Traded	Filed	Insider	Past deadline	Largest line	Source
Jul 17, 2025	Aug 18, 2025	Finney KevinDirector	20days	$18.5K	Filing ↗
Nov 17, 2025	Dec 4, 2025	Watson W. MarkDirector	10days	$6.2K	Filing ↗
Apr 23	Apr 30	Breitmeyer James BDirector	3days	—	Filing ↗
Nov 17, 2025	Nov 20, 2025	Heron Elaine JDirector	1day	$9.1K	Filing ↗

Finney KevinDirector

20days

Traded Jul 17, 2025 · filed Aug 18, 2025Filing ↗

Watson W. MarkDirector

10days

Traded Nov 17, 2025 · filed Dec 4, 2025Filing ↗

Breitmeyer James BDirector

3days

Traded Apr 23 · filed Apr 30Filing ↗

Heron Elaine JDirector

1day

Traded Nov 17, 2025 · filed Nov 20, 2025Filing ↗

Counted in business days from the transaction date, or the deemed execution date where the filing reports one, excluding weekends and federal holidays. How this is measured · All late filings

Insiders at this company

Everyone who has filed a Form 4 for this issuer.

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