Vaxart, Inc.

VXRTNASDAQHealthcare● Active

$0.60

$-0.02(-3.44%)

Market Cap$144912237

P/E Ratio—

52W High$0.84

52W Low$0.26

Avg Volume462K

Open$0.62

Beta1.09

Insider Trades Ownership Employees

Vaxart, Inc. (VXRT) Insider Trading

Form 4 buy vs sell counts, ratio, and sentiment — switch this quarter or last 12 months; chart and transactions below.

SEC EDGAR · FMP · VXRT · as of Jun 9, 2026

Activity summary

Buy transactions

P-Purchase only

Sell transactions

12 Months

Buy/Sell ratio

∞

Buy/Sell (by trades)

Overall sentiment

BULLISH

↑ Buy 100%Active transactions only · RSU vesting excluded0% Sell ↓

Vaxart, Inc. insiders have been net buyers of shares over the past 12 Months, which may signal confidence in the company's outlook.

▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · Buy = P-Purchase only · Sell = S-Sale only

As of Jun 9, 2026

VXRT insider buying and selling by quarter

VXRT insider selling · VXRT insider buying stocks · quarterly insider activity

Total insider buying (incl. awards)Total insider selling

7.9M3.9M0

2024 Q4

2025 Q1

2025 Q2

2025 Q3

2025 Q4

2026 Q1

2026 Q2

2033 Q1

Mobile shows last 4Q · Desktop shows full 8Q

▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · last 8 quarters

As of Jun 9, 2026

Active insiders

Most active in past 12 months · VXRT ceo insider trading

Showing all insiders · Click a card to filter the transactions table below

▸ Aggregated from reportingName · top 5 by trade count (12M) · no extra API

Recent insider transactions

VXRT executive sell shares · VXRT board member insider trading · VXRT insider trading SEC filing

Showing 70 most recent · Common Stock · Form 4 only

Scroll horizontally to see all columns

Date	Insider	Type	Shares	Price	Value	After trans.	Filing
May 22, 2026	Watson W. Mark Director	Purchase	10,000	$0.65	$7K	134,125	Form 4
May 19, 2026	Grasman Jeroen Nicolaas CFO	Other	31,395	$0.61	$19K	545,605	Form 4
Apr 23, 2026	BREITMEYER JAMES B Director	Award	78,800	—	—	78,800	Form 4
Mar 28, 2026	Tucker Sean SVP, Chief Scientific Officer	Other	3,924	$0.65	$3K	882,811	Form 4
Mar 28, 2026	Cummings James F. Chief Medical Officer	Other	3,292	$0.65	$2K	924,177	Form 4
Mar 24, 2026	Berg Edward B SVP, General Counsel	Other	36,418	$0.69	$25K	755,368	Form 4
Mar 24, 2026	Cummings James F. Chief Medical Officer	Other	30,551	$0.69	$21K	927,469	Form 4
Mar 24, 2026	Lo Steven President, Chief Exec Officer · Director	Other	126,028	$0.69	$87K	2,485,606	Form 4
Mar 24, 2026	Tucker Sean SVP, Chief Scientific Officer	Other	36,418	$0.69	$25K	886,735	Form 4
Mar 18, 2026	Berg Edward B SVP, General Counsel	Other	8,072	$0.63	$5K	791,786	Form 4
Mar 18, 2026	Cummings James F. Chief Medical Officer	Other	6,772	$0.63	$4K	958,020	Form 4
Mar 18, 2026	Lo Steven President, Chief Exec Officer · Director	Other	22,425	$0.63	$14K	2,611,634	Form 4
Mar 18, 2026	Tucker Sean SVP, Chief Scientific Officer	Other	8,072	$0.63	$5K	923,153	Form 4
Mar 16, 2026	Lo Steven President, Chief Exec Officer · Director	Award	846,500	—	—	2,634,059	Form 4
Mar 16, 2026	Tucker Sean SVP, Chief Scientific Officer	Award	200,000	—	—	931,225	Form 4
Mar 16, 2026	Grasman Jeroen Nicolaas CFO	Award	227,000	—	—	577,000	Form 4
Mar 16, 2026	Cummings James F. Chief Medical Officer	Award	227,000	—	—	964,792	Form 4
Mar 16, 2026	Berg Edward B SVP, General Counsel	Award	115,000	—	—	799,858	Form 4
Feb 2, 2026	Cummings James F. Chief Medical Officer	Other	7,965	$0.61	$5K	737,792	Form 4
Feb 2, 2026	Berg Edward B SVP, General Counsel	Other	9,265	$0.61	$6K	684,858	Form 4
Feb 2, 2026	Tucker Sean SVP, Chief Scientific Officer	Other	9,265	$0.61	$6K	731,225	Form 4
Dec 4, 2025	Lo Steven President, Chief Exec Officer · Director	Award	151,351	—	—	1,841,712	Form 4
Dec 4, 2025	Lo Steven President, Chief Exec Officer · Director	Other	54,153	$0.37	$20K	1,787,559	Form 4
Nov 17, 2025	Watson W. Mark Director	Purchase	5,000	$0.41	$2K	124,125	Form 4
Nov 17, 2025	Watson W. Mark Director	Purchase	15,000	$0.41	$6K	119,125	Form 4

Watson W. Mark

Director

Purchase

Date

May 22

10,000

Price

$0.65

Value

$7K

View Form 4 on SEC.gov

Grasman Jeroen Nicolaas

CFO

Other

Date

May 19

31,395

Price

$0.61

Value

$19K

View Form 4 on SEC.gov

BREITMEYER JAMES B

Director

Award

Date

Apr 23

78,800

Price

—

Value

—

View Form 4 on SEC.gov

Tucker Sean

SVP, Chief Scientific Officer

Other

Date

Mar 28

3,924

Price

$0.65

Value

$3K

View Form 4 on SEC.gov

Cummings James F.

Chief Medical Officer

Other

Date

Mar 28

3,292

Price

$0.65

Value

$2K

View Form 4 on SEC.gov

Berg Edward B

SVP, General Counsel

Other

Date

Mar 24

36,418

Price

$0.69

Value

$25K

View Form 4 on SEC.gov

Cummings James F.

Chief Medical Officer

Other

Date

Mar 24

30,551

Price

$0.69

Value

$21K

View Form 4 on SEC.gov

Lo Steven

President, Chief Exec Officer · Director

Other

Date

Mar 24

126,028

Price

$0.69

Value

$87K

View Form 4 on SEC.gov

Tucker Sean

SVP, Chief Scientific Officer

Other

Date

Mar 24

36,418

Price

$0.69

Value

$25K

View Form 4 on SEC.gov

Berg Edward B

SVP, General Counsel

Other

Date

Mar 18

8,072

Price

$0.63

Value

$5K

View Form 4 on SEC.gov

Cummings James F.

Chief Medical Officer

Other

Date

Mar 18

6,772

Price

$0.63

Value

$4K

View Form 4 on SEC.gov

Lo Steven

President, Chief Exec Officer · Director

Other

Date

Mar 18

22,425

Price

$0.63

Value

$14K

View Form 4 on SEC.gov

Tucker Sean

SVP, Chief Scientific Officer

Other

Date

Mar 18

8,072

Price

$0.63

Value

$5K

View Form 4 on SEC.gov

Lo Steven

President, Chief Exec Officer · Director

Award

Date

Mar 16

846,500

Price

—

Value

—

View Form 4 on SEC.gov

Tucker Sean

SVP, Chief Scientific Officer

Award

Date

Mar 16

200,000

Price

—

Value

—

View Form 4 on SEC.gov

Grasman Jeroen Nicolaas

CFO

Award

Date

Mar 16

227,000

Price

—

Value

—

View Form 4 on SEC.gov

Cummings James F.

Chief Medical Officer

Award

Date

Mar 16

227,000

Price

—

Value

—

View Form 4 on SEC.gov

Berg Edward B

SVP, General Counsel

Award

Date

Mar 16

115,000

Price

—

Value

—

View Form 4 on SEC.gov

Cummings James F.

Chief Medical Officer

Other

Date

Feb 2

7,965

Price

$0.61

Value

$5K

View Form 4 on SEC.gov

Berg Edward B

SVP, General Counsel

Other

Date

Feb 2

9,265

Price

$0.61

Value

$6K

View Form 4 on SEC.gov

Tucker Sean

SVP, Chief Scientific Officer

Other

Date

Feb 2

9,265

Price

$0.61

Value

$6K

View Form 4 on SEC.gov

Lo Steven

President, Chief Exec Officer · Director

Award

Date

Dec 4

151,351

Price

—

Value

—

View Form 4 on SEC.gov

Lo Steven

President, Chief Exec Officer · Director

Other

Date

Dec 4

54,153

Price

$0.37

Value

$20K

View Form 4 on SEC.gov

Watson W. Mark

Director

Purchase

Date

Nov 17

5,000

Price

$0.41

Value

$2K

View Form 4 on SEC.gov

Watson W. Mark

Director

Purchase

Date

Nov 17

15,000

Price

$0.41

Value

$6K

View Form 4 on SEC.gov

⚡ = value ≥ $1M · Award/Option price shows — · formType=4 · securityName=Common Stock · url → sec.gov/Archives/edgar

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▸ Source: SEC EDGAR · Form 4 filings · ⚡ = value ≥ $1M · Award/Option price shows —

About VXRT insider trading

VXRT insider trades

Vaxart, Inc. (VXRT) insider trading data is sourced from SEC Form 4 filings submitted by corporate insiders, including Finney Kevin (Director), Watson W. Mark (Director), Tucker Sean (SVP, Chief Scientific Officer). Over the past 12 months, 5 insiders have filed transactions with the SEC. VXRT insiders have been primarily buying, which may reflect pre-scheduled Rule 10b5-1 plan executions.

For Vaxart, Inc.'s institutional ownership breakdown and insider ownership percentage, see the Ownership tab → Ownership tab →

Buy/Sell signal logic

acquisitionOrDisposition field:

A = Acquisition (buy) · D = Disposition (sell)

RSU vesting (M-Exempt) excluded from sentiment

Form 4SEC filing required within 2 business days of any insider transaction

10b5-1Pre-scheduled trading plan that allows insiders to sell on autopilot

Open MktDirect purchase or sale on the open market (excludes awards, options)

Ownership SEC filings Financial statements Price history Forecast & ratings Earnings

Frequently asked questions

VXRT insider trading · 5 questions

The insiders of Vaxart, Inc. (VXRT) include executives and directors such as Finney Kevin (Director), Watson W. Mark (Director), Tucker Sean (SVP, Chief Scientific Officer), among others. Over the past 12 months, 5 insiders have filed Form 4 transactions with the SEC. Insider transactions are required to be reported within 2 business days of the trade date.

VXRT board member insider tradingwho are VXRT insidersVXRT insider rosterVaxart, Inc. executives insider activity

▸ Source: FMP /stable/insider-trading/search · SEC EDGAR Form 3 & 4 · acquisitionOrDisposition A=Buy, D=Sell · RSU vesting (M-Exempt) excluded from sentiment bar · As of Jun 9, 2026