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Updated Jul 16, 2026 · Last SEC filing 2026-05-26
Vaxart, Inc. (VXRT) has filed 3 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-05-26. 7 Form 8-K material event filings were reported by VXRT in the last 90 days. InsiderAlpha tracks every VXRT SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SEC CIK | 0000072444 |
|---|
| Form 4 filings (90d) | 3 |
|---|---|
| Form 8-K filings (90d) | 7 |
| Latest Form 4 filing | 2026-05-26 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Watson W. Mark | Director | P — Open-market purchase | 10.0K | $0.65 | $7K | SEC | |
| Grasman Jeroen Nicolaas | Chief Financial Officer | F — Tax withholding / forfeiture | 31.4K | $0.61 | $19K | SEC | |
| BREITMEYER JAMES B | Director | A — Grant or award | 78.8K | $0.00 | — | SEC | |
| Tucker Sean | SVP, Chief Scientific Officer | F — Tax withholding / forfeiture | 3.9K | $0.65 | $3K | SEC | |
| Cummings James F. | Chief Medical Officer | F — Tax withholding / forfeiture | 3.3K | $0.65 | $2K | SEC | |
| Lo Steven | President, Chief Exec Officer | F — Tax withholding / forfeiture | 126.0K | $0.69 | $87K | SEC | |
| Tucker Sean | SVP, Chief Scientific Officer | F — Tax withholding / forfeiture | 36.4K | $0.69 | $25K | SEC | |
| Cummings James F. | Chief Medical Officer | F — Tax withholding / forfeiture | 30.6K | $0.69 | $21K | SEC | |
| Berg Edward B | SVP, General Counsel | F — Tax withholding / forfeiture | 36.4K | $0.69 | $25K | SEC | |
| Berg Edward B | SVP, General Counsel | F — Tax withholding / forfeiture | 8.1K | $0.63 | $5K | SEC | |
| Tucker Sean | SVP, Chief Scientific Officer | F — Tax withholding / forfeiture | 8.1K | $0.63 | $5K | SEC | |
| Cummings James F. | Chief Medical Officer | F — Tax withholding / forfeiture | 6.8K | $0.63 | $4K | SEC | |
| Lo Steven | President, Chief Exec Officer | F — Tax withholding / forfeiture | 22.4K | $0.63 | $14K | SEC | |
| Berg Edward B | SVP, General Counsel | A — Grant or award | 115.0K | $0.00 | — | SEC | |
| Tucker Sean | SVP, Chief Scientific Officer | A — Grant or award | 200.0K | $0.00 | — | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for Vaxart, Inc. (VXRT). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| BREITMEYER JAMES B | 2 | — |
| Watson W. Mark | 1 | $7K |
| Grasman Jeroen Nicolaas | 1 | $19K |
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in VXRT insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
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