Michael P. Tarnok
CIK 1413525 · Interim CEO · last filed 2025-06-24
"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.
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Disclosed Exposure
$191.7K
Companies
2
Total Filings
27
Lifetime Open-Market Net
$198.9K
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| 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 · Page 2 of 3
27 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2020-01-03 | DYAI | Grant (A) | — | $0 | EDGAR |
| 2019-06-27 | DYAI | Grant (A) | — | $0 | EDGAR |
| 2015-06-18 | KERYX BIOPHARMACEUTICALS INC (KERX) Delisted | Grant (A) | +10,000 | $0 | EDGAR |
| 2015-05-06 | KERYX BIOPHARMACEUTICALS INC (KERX) Delisted | Buy (P) | +10,000 | $97.3K | EDGAR |
| 2013-06-21 | KERYX BIOPHARMACEUTICALS INC (KERX) Delisted | Grant (A) | −15,000 | $0 | EDGAR |
| 2012-06-22 | KERYX BIOPHARMACEUTICALS INC (KERX) Delisted | Grant (A) | +15,000 | $0 | EDGAR |
| 2012-04-09 | KERYX BIOPHARMACEUTICALS INC (KERX) Delisted | Buy (P) | +17,500 | $27.1K | EDGAR |
| 2011-08-11 | KERYX BIOPHARMACEUTICALS INC (KERX) Delisted | Buy (P) | +15,000 | $46.5K | EDGAR |
| 2011-07-13 | KERYX BIOPHARMACEUTICALS INC (KERX) Delisted | Grant (A) | +15,000 | $0 | EDGAR |
| 2010-09-22 | KERYX BIOPHARMACEUTICALS INC (KERX) Delisted | Grant (A) | — | $0 | EDGAR |
Codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.