12 insiders reported 57 Form 4 transactions for Vaxart, Inc. (VXRT) over the past 18 months (most recent 2026-05-21). Recent activity: Grasman Jeroen Nicolaas (Chief Financial Officer) Sell 31,395 shares, BREITMEYER JAMES B (Director) Buy 78,800 shares, Tucker Sean (SVP, Chief Scientific Officer) Sell 3,924 shares, Cummings James F. (Chief Medical Officer) Sell 3,292 shares, Tucker Sean (SVP, Chief Scientific Officer) Sell 36,418 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-05-21 | Grasman Jeroen Nicolaas | Chief Financial Officer | Sell | 31,395 | $19,151 |
| 2026-05-01 | BREITMEYER JAMES B | Director | Buy | 78,800 | $0 |
| 2026-03-31 | Tucker Sean | SVP, Chief Scientific Officer | Sell | 3,924 | $2,551 |
| 2026-03-31 | Cummings James F. | Chief Medical Officer | Sell | 3,292 | $2,140 |
| 2026-03-26 | Tucker Sean | SVP, Chief Scientific Officer | Sell | 36,418 | $25,128 |
| 2026-03-26 | Lo Steven | President, Chief Exec Officer | Sell | 126,028 | $86,959 |
| 2026-03-26 | Cummings James F. | Chief Medical Officer | Sell | 30,551 | $21,080 |
| 2026-03-26 | Berg Edward B | SVP, General Counsel | Sell | 36,418 | $25,128 |
| 2026-03-20 | Berg Edward B | SVP, General Counsel | Sell | 8,072 | $5,085 |
| 2026-03-20 | Lo Steven | President, Chief Exec Officer | Sell | 22,425 | $14,128 |
| 2026-03-20 | Tucker Sean | SVP, Chief Scientific Officer | Sell | 8,072 | $5,085 |
| 2026-03-20 | Cummings James F. | Chief Medical Officer | Sell | 6,772 | $4,266 |
| 2026-03-18 | Berg Edward B | SVP, General Counsel | Buy | 115,000 | $0 |
| 2026-03-18 | Lo Steven | President, Chief Exec Officer | Buy | 846,500 | $0 |
| 2026-03-18 | Tucker Sean | SVP, Chief Scientific Officer | Buy | 200,000 | $0 |
| 2026-03-18 | Grasman Jeroen Nicolaas | Chief Financial Officer | Buy | 227,000 | $0 |
| 2026-03-18 | Cummings James F. | Chief Medical Officer | Buy | 227,000 | $0 |
| 2026-02-05 | Tucker Sean | SVP, Chief Scientific Officer | Sell | 9,265 | $5,652 |
| 2026-02-05 | Berg Edward B | SVP, General Counsel | Sell | 9,265 | $5,652 |
| 2026-02-05 | Cummings James F. | Chief Medical Officer | Sell | 7,965 | $4,859 |
| 2025-12-08 | Lo Steven | President, Chief Exec Officer | Buy | 151,351 | $0 |
| 2025-12-08 | Lo Steven | President, Chief Exec Officer | Sell | 54,153 | $20,037 |
| 2025-12-05 | Watson W. Mark | Director | Buy | 15,000 | $6,150 |
| 2025-12-05 | Watson W. Mark | Director | Buy | 5,000 | $2,050 |
| 2025-11-21 | HERON ELAINE J | Director | Buy | 23,217 | $9,055 |
Source: SEC Form 4 filings · as of 2026-05-21
