John Prosper Mack
CIK 2031699 · View on SEC EDGAR ↗
Insider
First SEC filing: June 25, 2026 · Latest: June 25, 2026
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 8 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
No open-market trades on record; showing all filings.
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Aug. 12, 2026 | OBIO | F | 4,885 | $4.42 | $21,592 | 66,544 Direct | -6.84% | Disposed | 27.9% (price as of 2026-08-19) |
| June 24, 2026 | OBIO | F | 3,510 | — | — | 71,429 Direct | -4.68% | Disposed | (price as of 2026-08-19) |
| June 23, 2026 | OBIO | A | 34,653 | — | — | 74,939 Direct | +86.02% | Acquired | (price as of 2026-08-19) |
| Aug. 7, 2025 | OBIO | A | 15,000 | — | — | 40,286 Direct | +59.32% | Acquired | (price as of 2026-08-19) |
| June 24, 2025 | OBIO | A | 36,797 | — | — | 36,797 Direct | — | Acquired | (price as of 2026-08-19) |
| June 24, 2025 | OBIO | A | 12,422 | — | — | 25,286 Direct | +96.56% | Acquired | (price as of 2026-08-19) |
| Aug. 7, 2024 | OBIO | A | 40,737 | — | — | 40,737 Direct | — | Acquired | (price as of 2026-08-19) |
| Aug. 7, 2024 | OBIO | A | 12,864 | — | — | 12,864 Direct | — | Acquired | (price as of 2026-08-19) |
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 |
|---|---|---|---|---|---|---|---|
| June 24, 2025 | OBIO | Stock Option (Right to Buy) | Common Stock (36,797) | $3.22 | June 24, 2035 | 36,797 | Acquired |
| Aug. 7, 2024 | OBIO | Stock Option (Right to Buy) | Common Stock (40,737) | $5.83 | Aug. 7, 2034 | 40,737 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).