Paul A. Bunn
CIK 1868760 · View on SEC EDGAR ↗
Insider
First SEC filing: May 26, 2026 · Latest: May 26, 2026
On this page
Insider at
Insider transactions
0 buys (P)
2 sells (S)
Net:
$-137,997
+ 13 non-open-market transactions below
last 12 months, based on the transactions shown below
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
13 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Nov. 21, 2025 | VSTM | S 10b5-1 | 6,250 | $10.00 | $62,500 | 2,083 Direct | -75.00% | Disposed | -30.5% (price as of 2026-08-21) |
| Oct. 9, 2025 | VSTM | S 10b5-1 | 8,333 | $9.06 | $75,497 | 8,333 Direct | -50.00% | Disposed | -23.3% (price as of 2026-08-21) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II)
Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| Nov. 21, 2025 | VSTM | Stock Options (right to buy) | Common Stock (6,250) | $3.27 | June 18, 2034 | 6,250 | Disposed |
| May 22, 2025 | VSTM | Stock Option (right to buy) | Common Stock (12,500) | $7.48 | May 22, 2035 | 12,500 | Acquired |
| June 18, 2024 | VSTM | Stock Option (right to buy) | Common Stock (12,500) | $3.27 | June 18, 2034 | 12,500 | Acquired |
| March 11, 2024 | VSTM | Stock Option (right to buy) | Common Stock (6,113) | $11.44 | March 11, 2034 | 6,113 | Acquired |
| March 11, 2024 | VSTM | Stock Option (right to buy) | Common Stock (6,113) | $53.16 | June 24, 2031 | 6,113 | Disposed |
| May 15, 2023 | VSTM | Stock Option (right to buy) | Common Stock (62,500) | $0.42 | May 15, 2033 | 62,500 | Acquired |
| June 22, 2022 | VSTM | Stock Option (right to buy) | Common Stock (62,500) | $1.11 | June 22, 2032 | 62,500 | Acquired |
| May 12, 2022 | VSTM | Stock Option (right to buy) [F1] | Common Stock (62,500) | $1.07 | May 12, 2032 | 62,500 | Acquired |
| June 24, 2021 | VSTM | Stock Option (right to buy) | Common Stock (73,356) | $4.43 | June 24, 2031 | 73,356 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).