NASDAQ : VSTM
$0.05 (0.74%)
12
33
$105.48K
| Insider Name | Title | Date | Transaction | Cost | Filing Date |
|---|---|---|---|---|---|
| Paterson Dan | director, officer: President and CEO | 2026-08-03 | S-Sale | 5.81 | 2026-08-05 |
| Paterson Dan | director, officer: President and CEO | 2026-06-22 | S-Sale | 4.18 | 2026-06-24 |
| Calkins Daniel | officer: Chief Financial Officer | 2026-06-22 | S-Sale | 4.18 | 2026-06-24 |
| Calkins Daniel | officer: Chief Financial Officer | 2026-06-22 | S-Sale | 4.13 | 2026-06-24 |
| BAILEY MICHAEL P | director | 2026-05-21 | A-Award | 0 | 2026-05-27 |
| BAILEY MICHAEL P | director: | 2026-05-21 | 0 | 2026-05-27 | |
| Tollefson Karin Anna | director | 2026-05-21 | A-Award | 0 | 2026-05-26 |
| Stuglik Brian M | director | 2026-05-21 | A-Award | 0 | 2026-05-26 |
| Rowinsky Eric K | director | 2026-05-21 | A-Award | 0 | 2026-05-26 |
| ROBERTSON MICHELLE | director | 2026-05-21 | A-Award | 0 | 2026-05-26 |
| Kapur Anil | director | 2026-05-21 | A-Award | 0 | 2026-05-26 |
| Bunn Paul A. | director | 2026-05-21 | A-Award | 0 | 2026-05-26 |
| JOHNSON JOHN | director | 2026-05-21 | A-Award | 0 | 2026-05-26 |
| Paterson Dan | director, officer: President and CEO | 2026-05-04 | S-Sale | 5.82 | 2026-05-06 |
| Calkins Daniel | officer: Chief Financial Officer | 2026-03-20 | A-Award | 5.74 | 2026-03-23 |
| Paterson Dan | director, officer: President and CEO | 2026-02-04 | S-Sale | 6.69 | 2026-02-05 |
| Calkins Daniel | officer: Chief Financial Officer | 2026-01-21 | A-Award | 0 | 2026-01-23 |
| Paterson Dan | director, officer: President and CEO | 2026-01-21 | A-Award | 0 | 2026-01-23 |
| Paterson Dan | director, officer: President and CEO | 2026-01-12 | S-Sale | 7.16 | 2026-01-14 |
| Calkins Daniel | officer: Chief Financial Officer | 2026-01-12 | S-Sale | 7.16 | 2026-01-14 |
| Kauffman Michael | director, officer: President of Development | 2026-01-06 | A-Award | 6.88 | 2026-01-08 |
| Calkins Daniel | officer: Chief Financial Officer | 2025-12-24 | S-Sale | 7.86 | 2025-12-29 |
| Stuglik Brian M | director | 2025-12-16 | S-Sale | 9.14 | 2025-12-18 |
| Paterson Dan | director, officer: President and CEO | 2025-12-16 | S-Sale | 9.14 | 2025-12-18 |
| Gagnon Robert E. | director | 2025-12-16 | S-Sale | 9.14 | 2025-12-18 |
| Paterson Dan | director, officer: President and CEO | 2025-12-10 | S-Sale | 10.07 | 2025-12-12 |
| Paterson Dan | director, officer: President and CEO | 2025-12-11 | S-Sale | 10 | 2025-12-12 |
| Paterson Dan | director, officer: President and CEO | 2025-12-05 | S-Sale | 10.61 | 2025-12-09 |
| Paterson Dan | director, officer: President and CEO | 2025-12-08 | S-Sale | 10.5 | 2025-12-09 |
| Paterson Dan | director, officer: President and CEO | 2025-12-09 | S-Sale | 10.25 | 2025-12-09 |
| Paterson Dan | director, officer: President and CEO | 2025-12-02 | S-Sale | 10.32 | 2025-12-04 |
| Paterson Dan | director, officer: President and CEO | 2025-12-03 | S-Sale | 10 | 2025-12-04 |
| Paterson Dan | director, officer: President and CEO | 2025-12-04 | S-Sale | 10 | 2025-12-04 |
| Paterson Dan | director, officer: President and CEO | 2025-11-26 | S-Sale | 10.32 | 2025-12-01 |
| Paterson Dan | director, officer: President and CEO | 2025-11-28 | S-Sale | 10.79 | 2025-12-01 |
| Paterson Dan | director, officer: President and CEO | 2025-12-01 | S-Sale | 10.39 | 2025-12-01 |
| Bunn Paul A. | director | 2025-11-21 | M-Exempt | 3.27 | 2025-11-25 |
| Bunn Paul A. | director | 2025-11-21 | M-Exempt | 3.27 | 2025-11-25 |
| Bunn Paul A. | director | 2025-11-21 | S-Sale | 10 | 2025-11-25 |
| Kauffman Michael | director | 2025-11-21 | S-Sale | 10 | 2025-11-25 |
| Paterson Dan | director, officer: President and CEO | 2025-11-21 | S-Sale | 10 | 2025-11-25 |
| Paterson Dan | director, officer: President and CEO | 2025-11-24 | S-Sale | 10 | 2025-11-25 |
| Paterson Dan | director, officer: President and CEO | 2025-11-25 | S-Sale | 10 | 2025-11-25 |
| Paterson Dan | director, officer: President and CEO | 2025-11-03 | S-Sale | 9.35 | 2025-11-06 |
| Paterson Dan | director, officer: President and CEO | 2025-11-03 | S-Sale | 10 | 2025-11-06 |
| Bunn Paul A. | director | 2025-10-09 | S-Sale | 9.06 | 2025-10-14 |
| Calkins Daniel | officer: Chief Financial Officer | 2025-09-22 | S-Sale | 9.08 | 2025-09-24 |
| Calkins Daniel | officer: Chief Financial Officer | 2025-09-24 | S-Sale | 9.23 | 2025-09-24 |
| Stuglik Brian M | director | 2025-09-16 | S-Sale | 9.99 | 2025-09-18 |
| Gagnon Robert E. | director | 2025-09-16 | S-Sale | 9.99 | 2025-09-18 |
| Paterson Dan | director, officer: President and CEO | 2025-09-16 | S-Sale | 9.99 | 2025-09-18 |
| Paterson Dan | director, officer: President and CEO | 2025-08-06 | S-Sale | 5.81 | 2025-08-06 |
| Paterson Dan | director, officer: President and CEO | 2025-06-20 | S-Sale | 5.13 | 2025-06-24 |
| Calkins Daniel | officer: Chief Financial Officer | 2025-06-20 | S-Sale | 5.13 | 2025-06-24 |
| Calkins Daniel | officer: Chief Financial Officer | 2025-06-23 | S-Sale | 4.71 | 2025-06-24 |
| Paterson Dan | director, officer: President and CEO | 2025-06-16 | S-Sale | 5.65 | 2025-06-20 |
| Gagnon Robert E. | director | 2025-06-16 | S-Sale | 5.65 | 2025-06-20 |
| Stuglik Brian M | director | 2025-06-16 | S-Sale | 5.65 | 2025-06-20 |
| ROBERTSON MICHELLE | director | 2025-05-22 | A-Award | 0 | 2025-05-27 |
| ROBERTSON MICHELLE | director | 2025-05-22 | A-Award | 7.48 | 2025-05-27 |
| Bunn Paul A. | director | 2025-05-22 | A-Award | 0 | 2025-05-27 |
| Bunn Paul A. | director | 2025-05-22 | A-Award | 7.48 | 2025-05-27 |
| Kapur Anil | director | 2025-05-22 | A-Award | 0 | 2025-05-27 |
| Kapur Anil | director | 2025-05-22 | A-Award | 7.48 | 2025-05-27 |
| Stuglik Brian M | director | 2025-05-22 | A-Award | 0 | 2025-05-27 |
| Stuglik Brian M | director | 2025-05-22 | A-Award | 7.48 | 2025-05-27 |
| Gagnon Robert E. | director | 2025-05-22 | A-Award | 0 | 2025-05-27 |
| Gagnon Robert E. | director | 2025-05-22 | A-Award | 7.48 | 2025-05-27 |
| Kauffman Michael | director | 2025-05-22 | A-Award | 0 | 2025-05-27 |
| Kauffman Michael | director | 2025-05-22 | A-Award | 7.48 | 2025-05-27 |
| Tollefson Karin Anna | director | 2025-05-22 | A-Award | 0 | 2025-05-27 |
| Tollefson Karin Anna | director | 2025-05-22 | A-Award | 7.48 | 2025-05-27 |
| JOHNSON JOHN | director | 2025-05-22 | A-Award | 0 | 2025-05-27 |
| JOHNSON JOHN | director | 2025-05-22 | A-Award | 7.48 | 2025-05-27 |
| Rowinsky Eric K | director | 2025-05-22 | A-Award | 0 | 2025-05-27 |
| Rowinsky Eric K | director | 2025-05-22 | A-Award | 7.48 | 2025-05-27 |
| Calkins Daniel | officer: Chief Financial Officer | 2025-05-16 | A-Award | 0 | 2025-05-20 |
| Calkins Daniel | officer: Chief Financial Officer | 2025-05-20 | S-Sale | 8.13 | 2025-05-20 |
| Paterson Dan | director, officer: President and CEO | 2025-05-16 | A-Award | 0 | 2025-05-20 |
| Paterson Dan | director, officer: President and CEO | 2025-05-20 | S-Sale | 8.13 | 2025-05-20 |
| Paterson Dan | director, officer: President and CEO | 2025-05-16 | A-Award | 0 | 2025-05-20 |
| Paterson Dan | director, officer: President and CEO | 2025-05-05 | S-Sale | 7.3 | 2025-05-07 |
| Ros Matthew | officer: Chief Operating Officer | 2025-04-01 | A-Award | 0 | 2025-04-03 |
| Calkins Daniel | officer: Chief Financial Officer | 2025-03-20 | S-Sale | 6.89 | 2025-03-24 |
| Calkins Daniel | officer: Chief Financial Officer | 2025-03-24 | S-Sale | 7.04 | 2025-03-24 |
| Paterson Dan | director, officer: President and CEO | 2025-03-17 | S-Sale | 6.95 | 2025-03-19 |
| Gagnon Robert E. | director | 2025-03-17 | S-Sale | 6.95 | 2025-03-19 |
| Stuglik Brian M | director | 2025-03-17 | S-Sale | 6.95 | 2025-03-19 |
| Paterson Dan | director, officer: President and CEO | 2025-02-04 | S-Sale | 5.7 | 2025-02-05 |
| Ros Matthew | officer | 2025-01-14 | 0 | 2025-01-21 | |
| Paterson Dan | director, officer: President and CEO | 2025-01-10 | A-Award | 0 | 2025-01-14 |
| Paterson Dan | director, officer: President and CEO | 2025-01-13 | S-Sale | 5.24 | 2025-01-14 |
| Paterson Dan | director, officer: President and CEO | 2025-01-10 | A-Award | 0 | 2025-01-14 |
| Calkins Daniel | officer: Chief Financial Officer | 2025-01-10 | A-Award | 0 | 2025-01-14 |
| Calkins Daniel | officer: Chief Financial Officer | 2025-01-06 | S-Sale | 6.94 | 2025-01-08 |
| Calkins Daniel | officer: Chief Financial Officer | 2024-12-20 | S-Sale | 4.34 | 2024-12-26 |
| Calkins Daniel | officer: Chief Financial Officer | 2024-12-24 | S-Sale | 3.91 | 2024-12-26 |
| Gagnon Robert E. | director | 2024-12-16 | S-Sale | 4.54 | 2024-12-20 |
| Gagnon Robert E. | director | 2024-12-19 | S-Sale | 4.37 | 2024-12-20 |
| Stuglik Brian M | director | 2024-12-16 | S-Sale | 4.54 | 2024-12-20 |