Martin D Madaus
CIK 1310268 · CEO and President · last filed 2026-05-18
"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.
Loading insider history…
Disclosed Exposure
$6.50M
Companies
9
Total Filings
99
Lifetime Open-Market Net
-$3.18M
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 |
|---|---|---|---|---|---|---|---|
| RGEN | Director | 8,381 | $130.59 | $1.09M | $641.9K | 8 | 2026-05-18 |
| HOLOGIC INC (HOLX) Delisted | Director | 10,841 | $76.01 | $824.0K | $300.8K | 4 | 2026-03-02 |
| AZTA | Director | 7,405 | $22.59 | $167.3K | $201.4K | 5 | 2026-02-06 |
| QTRX | Director | 291,541 | $3.10 | $903.8K | -$3.11M | 44 | 2025-01-06 |
| LAB | Director | 104,111 | $0.89 | $92.4K | $0 | 5 | 2023-10-20 |
| MTD | Director | 3,749 | $1131.49 | $4.24M | -$1.22M | 9 | 2014-11-20 |
| Covidien plc (COV) Delisted | Director | 6,235 | — | — | $0 | 4 | 2014-02-24 |
| Covidien plc (COVw) Delisted | Director | 5,739 | — | — | $0 | 7 | 2013-05-07 |
| MILLIPORE CORP /MA (MIL) Delisted | CEO and President | 0 | — | — | $0 | 12 | 2010-07-16 |
Recent Filings · Page 3 of 10
99 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2023-05-08 | RGEN | Mixed | +1,511 | $240.3K | EDGAR |
| 2023-02-22 | LAB | Grant (A) | +29,665 | $0 | EDGAR |
| 2023-02-08 | RGEN | Grant (A) | +111 | $0 | EDGAR |
| 2023-01-04 | QTRX | Grant (A) | +8,083 | $0 | EDGAR |
| 2022-08-10 | QTRX | Buy (P) | +89,667 | $755.5K | EDGAR |
| 2022-06-17 | LAB | Grant (A) | +30,914 | $0 | EDGAR |
| 2022-04-06 | LAB | Grant (A) | +15,852 | $0 | EDGAR |
| 2022-01-05 | QTRX | Grant (A) | +3,095 | $18.1K | EDGAR |
| 2021-10-05 | QTRX | Grant (A) | +354 | $18.1K | EDGAR |
| 2021-07-06 | QTRX | Grant (A) | +304 | $18.1K | 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.