Mack John Prosper
CIK 2031699 · last filed 2025-08-08
Mack John Prosper is a corporate insider who has filed 3 SEC Form 4 insider transactions across 1 company since 2024. The most recent filing, for OBIO, was dated Aug 8, 2025. Current disclosed insider exposure totals $162.4K across reported positions.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
$162.4K
1
3
$0
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| OBIO | Director | 40,286 | $4.03 | $162.4K | $0 | 3 | 2025-08-08 |
Recent Filings
3 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2025-08-08 | OBIO | Grant (A) | +15,000 | $0 | EDGAR |
| 2025-06-26 | OBIO | Grant (A) | +12,422 | $0 | EDGAR |
| 2024-08-08 | OBIO | Grant (A) | +12,864 | $0 | EDGAR |