| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
Insider activity in VSTM over the last quarter tilts toward selling: insiders offloaded a net 48,044 shares worth roughly $381K. In the past 30 days, 0 insiders bought and 2 sold. The bias lately has been to the sell side.
On the other side, 2 insiders reduced their position over the period. VSTM sits in the Biotechnology industry within the Health Care sector, so this activity is best read against the sector's broader insider trend.
| Role | Insider | Shares | Value | 30d |
|---|---|---|---|---|
| CEO | 652.7K | $5.22M | -44,121 | |
| Pres | 200.0K | - | - | |
| CFO | 123.8K | $990.2K | -2,621 | |
| Dir | 101.1K | $924.5K | - | |
| Dir | 52.7K | - | - |
Buys and sells only
| Date | Insider | Role | Type | Shares | Price | Value | Chg% | 3M | 12M | SEC |
|---|---|---|---|---|---|---|---|---|---|---|
| Oct 1, 2026 | Paterson Dan65 | President And CEO | Sell | 44,121 | $8.00 | $352,968.00 | -6.3% | - | - | |
| Oct 1, 2026 | Calkins Daniel63 | Chief Financial Officer | Sell | 2,566 | $8.00 | $20,528.00 | -2.0% | - | - | |
| Sep 21, 2026 | Calkins Daniel63 | Chief Financial Officer | Sell | 55 | $7.70 | $423.50 | - | - | - | |
| Aug 3, 2026 | Paterson Dan65 | President And CEO | Sell | 1,302 | $5.81 | $7,564.62 | -0.2% | - | - | |
| Jun 22, 2026 | Calkins Daniel63 | Chief Financial Officer | Sell | 4,089 | $4.18 | $17,089.17 | -3.4% | - | - | |
| Jun 22, 2026 | Paterson Dan65 | President And CEO | Sell | 20,871 | $4.18 | $87,240.78 | -3.4% | - | - | |
| Jan 12, 2026 | Paterson Dan65 | President And CEO | Sell | 10,321 | $7.16 | $73,898.36 | -2.5% | -25.3% | - | |
| Jan 12, 2026 | Calkins Daniel63 | Chief Financial Officer | Sell | 5,039 | $7.16 | $36,079.24 | -4.6% | -25.3% | - | |
| Dec 24, 2025 | Calkins Daniel63 | Chief Financial Officer | Sell | 80 | $7.86 | $628.80 | - | -37.4% | - | |
| Dec 16, 2025 | Paterson Dan65 | President And CEO | Sell | 393 | $9.14 | $3,592.02 | - | -32.8% | - |