Michael P. Tarnok
CIK 1413525 · Interim CEO · last filed 2025-06-24
Michael P. Tarnok is an Interim CEO who has filed 27 SEC Form 4 insider transactions across 2 companies since 2007. The most recent filing, for DYAI, was dated Jun 24, 2025. Across all open-market trades the lifetime net is +$198.9K, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $191.7K 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.
$191.7K
2
27
$198.9K
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| DYAI | Director | 281,033 | $0.68 | $191.7K | $0 | 12 | 2025-06-24 |
| KERYX BIOPHARMACEUTICALS INC (KERX) Delisted | Director | 338,600 | — | — | $198.9K | 15 | 2015-06-18 |
Recent Filings
27 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2025-06-24 | DYAI | Exer (M) | +10,776 | $0 | EDGAR |
| 2025-01-07 | DYAI | Mixed | +23,585 | $0 | EDGAR |
| 2024-11-25 | DYAI | Exer (M) | +25,000 | $24.2K | EDGAR |
| 2024-05-23 | DYAI | Mixed | +5,569 | $0 | EDGAR |
| 2024-04-15 | DYAI | Disp (D) | — | $0 | EDGAR |
| 2024-01-04 | DYAI | Mixed | +27,174 | $0 | EDGAR |
| 2023-01-05 | DYAI | Grant (A) | — | $0 | EDGAR |
| 2022-06-14 | DYAI | Grant (A) | — | $0 | EDGAR |
| 2022-01-05 | DYAI | Grant (A) | — | $0 | EDGAR |
| 2021-01-06 | DYAI | Grant (A) | — | $0 | EDGAR |