Vaxart, Inc. — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| Lo Steven | President, Chief Exec Officer | Award / Grant | 151,351 | — | — | 1,841,712 | Dec 4, 2025 |
| Watson W. Mark | — | Purchase | 5,000 | $0.41 | $2,050 | 124,125 | Nov 17, 2025 |
| HERON ELAINE J | — | Purchase | 16,783 | $0.41 | $6,881 | 96,566 | Nov 17, 2025 |
| Finney Kevin | — | Purchase | 50,000 | $0.37 | $18,500 | 204,771 | Jul 30, 2025 |
| Watson W. Mark | — | Purchase | 10,000 | $0.41 | $4,100 | 104,125 | Jul 29, 2025 |
| Finney Kevin | — | Award / Grant | 6,103 | — | — | 38,103 | Jun 13, 2025 |
| Watson W. Mark | — | Award / Grant | 16,000 | — | — | 94,125 | Jun 13, 2025 |
| HERON ELAINE J | — | Award / Grant | 16,000 | — | — | 56,566 | Jun 13, 2025 |
| Wheadon David E. | — | Award / Grant | 16,000 | — | — | 46,750 | Jun 13, 2025 |
| Finney Michael J. | — | Award / Grant | 16,000 | — | — | 702,840 | Jun 13, 2025 |
| Grasman Jeroen Nicolaas | Chief Financial Officer | Award / Grant | 350,000 | — | — | 350,000 | May 19, 2025 |
| Lo Steven | President, Chief Exec Officer | Purchase | 100,000 | $0.49 | $49,000 | 100,000 | May 19, 2025 |
| Cummings James F. | Chief Medical Officer | Tax Withholding | 3,292 | $0.42 | $1,383 | 745,757 | Mar 28, 2025 |
| Tucker Sean | SVP, Chief Scientific Officer | Tax Withholding | 3,913 | $0.42 | $1,643 | 740,490 | Mar 28, 2025 |
| Lo Steven | President, Chief Exec Officer | Award / Grant | 1,405,000 | — | — | 1,632,638 | Mar 24, 2025 |
| Tucker Sean | SVP, Chief Scientific Officer | Award / Grant | 406,000 | — | — | 744,403 | Mar 24, 2025 |
| Lee Phillip E | Chief Financial Officer | Award / Grant | 406,000 | — | — | 631,619 | Mar 24, 2025 |
| Cummings James F. | Chief Medical Officer | Award / Grant | 406,000 | — | — | 749,049 | Mar 24, 2025 |
| Berg Edward B | SVP, General Counsel | Award / Grant | 406,000 | — | — | 694,123 | Mar 24, 2025 |
| Berg Edward B | SVP, General Counsel | Tax Withholding | 8,050 | $0.57 | $4,589 | 288,123 | Mar 18, 2025 |
| Lo Steven | President, Chief Exec Officer | Tax Withholding | 22,362 | $0.57 | $12,746 | 227,638 | Mar 18, 2025 |
| Tucker Sean | SVP, Chief Scientific Officer | Tax Withholding | 8,050 | $0.57 | $4,589 | 338,403 | Mar 18, 2025 |
| Lee Phillip E | Chief Financial Officer | Tax Withholding | 8,050 | $0.57 | $4,589 | 225,619 | Mar 18, 2025 |
| Tucker Sean | SVP, Chief Scientific Officer | Tax Withholding | 9,242 | $0.68 | $6,285 | 346,453 | Feb 2, 2025 |
| Cummings James F. | Chief Medical Officer | Tax Withholding | 7,964 | $0.68 | $5,416 | 318,837 | Feb 2, 2025 |
| Berg Edward B | SVP, General Counsel | Tax Withholding | 9,242 | $0.68 | $6,285 | 261,464 | Feb 2, 2025 |
| Finney Kevin | — | Award / Grant | 32,000 | — | — | 32,000 | Jan 28, 2025 |
| Lee Phillip E | Chief Financial Officer | Tax Withholding | 6,132 | $0.59 | $3,618 | 233,669 | Dec 15, 2024 |
| Watson W. Mark | — | Purchase | 20,000 | $0.68 | $13,600 | 78,125 | Jun 18, 2024 |
| Lee Phillip E | Chief Financial Officer | Tax Withholding | 2,007 | $0.76 | $1,525 | 239,801 | Jun 12, 2024 |
| Wheadon David E. | — | Award / Grant | 16,000 | — | — | 30,750 | Jun 11, 2024 |
| Finney Michael J. | — | Award / Grant | 16,000 | — | — | 686,840 | Jun 11, 2024 |
| HERON ELAINE J | — | Award / Grant | 16,000 | — | — | 40,566 | Jun 11, 2024 |
| Watson W. Mark | — | Award / Grant | 16,000 | — | — | 58,125 | Jun 11, 2024 |
| Yedid Robert A. | — | Award / Grant | 16,000 | — | — | 34,490 | Jun 11, 2024 |
| Tucker Sean | SVP, Chief Scientific Officer | Tax Withholding | 3,902 | $1.30 | $5,073 | 355,695 | Mar 28, 2024 |
| Cummings James F. | Chief Medical Officer | Tax Withholding | 3,292 | $1.30 | $4,280 | 326,801 | Mar 28, 2024 |
| Lee Phillip E | Chief Financial Officer | Tax Withholding | 5,943 | $0.63 | $3,744 | 151,808 | Mar 18, 2024 |
| Cummings James F. | Chief Medical Officer | Tax Withholding | 7,965 | $1.20 | $9,558 | 240,093 | Mar 18, 2024 |
| Lo Steven | President, Chief Exec Officer | Award / Grant | 250,000 | — | — | 250,000 | Mar 18, 2024 |
| Berg Edward B | SVP, General Counsel | Tax Withholding | 33,752 | $0.71 | $23,964 | 189,926 | Feb 2, 2024 |
| Watson W. Mark | — | Award / Grant | 7,375 | — | — | 42,125 | Jun 26, 2023 |
| HERON ELAINE J | — | Award / Grant | 6,922 | — | — | 24,566 | Jun 26, 2023 |
| Yedid Robert A. | — | Award / Grant | 7,375 | — | — | 18,490 | Jun 26, 2023 |
| Wheadon David E. | — | Award / Grant | 7,375 | — | — | 14,750 | Jun 26, 2023 |
| Finney Michael J. | — | Award / Grant | 7,375 | — | — | 670,840 | Jun 26, 2023 |
| Lee Phillip E | Chief Financial Officer | Award / Grant | 22,500 | — | — | 192,902 | Jun 12, 2023 |
| Cummings James F. | Chief Medical Officer | Tax Withholding | 6,772 | $0.57 | $3,860 | 343,049 | Mar 28, 2023 |
| Tucker Sean | SVP, Chief Scientific Officer | Award / Grant | 90,000 | — | — | 420,122 | Mar 28, 2023 |
| Floroiu Cezar Andrei | President, Chief Exec Officer | Award / Grant | 100,000 | — | — | 185,000 | Mar 17, 2023 |