VXRT

Vaxart, Inc.

SEC CIK 72444
$0.5700 −10.9% · 90 days
90-day buys
$6.5K
1 open-market
90-day sells
$0
0 open-market
Net insider flow
+$6.5K
Net buying
Filings shown
33
Most recent
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At a glance

Over the last 90 days, insiders at VXRT have bought a net $6.5K of stock (1 open-market buy vs 0 sells).

Largest recent trade: Finney Kevin, VXRT's Director, spent $18.5K of their own money on 50,000 shares at $0, growing their stake 32%.

Most active filer: Finney Kevin, with 6 transactions among the recent filings shown.

Insider transaction history

Form 4 filings for VXRT, newest first
View on SEC EDGAR ↗
VXRT
Buy Watson W. Mark · Director · Open-market purchase · filed 2w ago ΔOwn +8.1%

Watson W. Mark, VXRT's Director, spent $6.5K of their own money on 10,000 shares at $1, growing their stake 8%.

+$6.5K
10,000 sh @ $1
VXRT
Tax withholding Tucker Sean · SVP, Chief Scientific Officer · Tax withholding · filed Mar 31, 2026 ΔOwn −0.4%
−$2.6K
3,924 sh @ $1
VXRT
Tax withholding Cummings James F. · Chief Medical Officer · Tax withholding · filed Mar 31, 2026 ΔOwn −0.4%
−$2.1K
3,292 sh @ $1
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VXRT
Tax withholding Berg Edward B · SVP, General Counsel · Tax withholding · filed Mar 26, 2026 ΔOwn −4.6%
−$25.3K
36,418 sh @ $1
VXRT
Tax withholding Cummings James F. · Chief Medical Officer · Tax withholding · filed Mar 26, 2026 ΔOwn −3.2%
−$21.2K
30,551 sh @ $1
VXRT
Tax withholding Lo Steven · Director, President, Chief Exec Officer · Tax withholding · filed Mar 26, 2026 ΔOwn −4.8%
−$87.5K
126,028 sh @ $1
VXRT
Tax withholding Tucker Sean · SVP, Chief Scientific Officer · Tax withholding · filed Mar 26, 2026 ΔOwn −3.9%
−$25.3K
36,418 sh @ $1
VXRT
Tax withholding Berg Edward B · SVP, General Counsel · Tax withholding · filed Mar 20, 2026 ΔOwn −1.0%
−$5.1K
8,072 sh @ $1
VXRT
Tax withholding Cummings James F. · Chief Medical Officer · Tax withholding · filed Mar 20, 2026 ΔOwn −0.7%
−$4.3K
6,772 sh @ $1
VXRT
Tax withholding Lo Steven · Director, President, Chief Exec Officer · Tax withholding · filed Mar 20, 2026 ΔOwn −0.9%
−$14.2K
22,425 sh @ $1
VXRT
Tax withholding Tucker Sean · SVP, Chief Scientific Officer · Tax withholding · filed Mar 20, 2026 ΔOwn −0.9%
−$5.1K
8,072 sh @ $1
VXRT
Grant/award Lo Steven · Director, President, Chief Exec Officer · Grant/award · filed Mar 18, 2026 ΔOwn +47%
+$0
846,500 sh
VXRT
Grant/award Tucker Sean · SVP, Chief Scientific Officer · Grant/award · filed Mar 18, 2026 ΔOwn +27%
+$0
200,000 sh
VXRT
Grant/award Berg Edward B · SVP, General Counsel · Grant/award · filed Mar 18, 2026 ΔOwn +17%
+$0
115,000 sh
VXRT
Tax withholding Cummings James F. · Chief Medical Officer · Tax withholding · filed Feb 5, 2026 ΔOwn −1.1%
−$4.8K
7,965 sh @ $1
VXRT
Tax withholding Berg Edward B · SVP, General Counsel · Tax withholding · filed Feb 5, 2026 ΔOwn −1.3%
−$5.6K
9,265 sh @ $1
VXRT
Tax withholding Tucker Sean · SVP, Chief Scientific Officer · Tax withholding · filed Feb 5, 2026 ΔOwn −1.3%
−$5.6K
9,265 sh @ $1
VXRT
Grant/award Lo Steven · Director, President, Chief Exec Officer · Grant/award · filed Dec 8, 2025 ΔOwn +9.0%
+$0
151,351 sh
VXRT
Tax withholding Lo Steven · Director, President, Chief Exec Officer · Tax withholding · filed Dec 8, 2025 ΔOwn −2.9%
−$20K
54,153 sh @ $0
VXRT
Buy Watson W. Mark · Director · Open-market purchase · filed Dec 5, 2025 ΔOwn +14%

Watson W. Mark, VXRT's Director, spent $6.2K of their own money on 15,000 shares at $0, growing their stake 14%.

+$6.2K
15,000 sh @ $0
VXRT
Buy Watson W. Mark · Director · Open-market purchase · filed Dec 5, 2025 ΔOwn +4.2%

Watson W. Mark, VXRT's Director, spent $2K of their own money on 5,000 shares at $0, growing their stake 4%.

+$2K
5,000 sh @ $0
VXRT
Buy HERON ELAINE J · Director · Open-market purchase · filed Nov 21, 2025 ΔOwn +41%

Heron Elaine J, VXRT's Director, spent $9.1K of their own money on 23,217 shares at $0, growing their stake 41%.

+$9.1K
23,217 sh @ $0
VXRT
Buy HERON ELAINE J · Director · Open-market purchase · filed Nov 21, 2025 ΔOwn +21%

Heron Elaine J, VXRT's Director, spent $6.8K of their own money on 16,783 shares at $0, growing their stake 21%.

+$6.8K
16,783 sh @ $0
VXRT
Buy Finney Kevin · Director · Open-market purchase · filed Aug 19, 2025 ΔOwn +48%

Finney Kevin, VXRT's Director, spent $17.5K of their own money on 50,000 shares at $0, growing their stake 48%.

+$17.5K
50,000 sh @ $0
VXRT
Buy Finney Kevin · Director · Open-market purchase · filed Aug 19, 2025 ΔOwn +32%

Finney Kevin, VXRT's Director, spent $18.5K of their own money on 50,000 shares at $0, growing their stake 32%.

+$18.5K
50,000 sh @ $0
VXRT
Buy Finney Kevin · Director · Open-market purchase · filed Aug 19, 2025 ΔOwn +33%

Finney Kevin, VXRT's Director, spent $9.8K of their own money on 25,874 shares at $0, growing their stake 33%.

+$9.8K
25,874 sh @ $0
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About VXRT insider activity

This page tracks every recent Form 4 filed for Vaxart, Inc. with the U.S. Securities and Exchange Commission. Form 4 is the disclosure that company insiders — officers, directors, and holders of more than 10% of the stock — must file within two business days of buying or selling shares.

The summary above nets open-market purchases against open-market sales over the trailing 90 days. Open-market trades (codes P and S) tend to carry the most signal because they reflect a deliberate choice to put money in or take it out, as opposed to routine grants, option exercises, or tax-withholding events. Use the badges on each row to tell them apart, and always confirm details against the original filing before drawing conclusions.

Frequently asked questions

How often is VXRT insider data updated?

Continuously. We read from SEC EDGAR, so new Form 4 filings for Vaxart, Inc. usually appear here within minutes of being accepted by the SEC.

What does "net insider flow" mean?

It is the total dollar value of open-market insider purchases minus open-market sales over the last 90 days. A positive number (green) means insiders bought more than they sold; a negative number (red) means the reverse.

Why do some rows show grants or option exercises instead of buys?

Insiders receive stock through compensation as well as buying it outright. Form 4 captures all of these. We label each transaction by its SEC code so you can focus on open-market activity if you prefer.

Is this investment advice?

No. InsiderSource presents public filing data for informational purposes only. Insider activity is one of many factors to consider and is never a recommendation to buy or sell.