Martin D Madaus
CIK 1310268 · Interim CEO · last filed 2026-10-23
"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.
Charts
Trading activity, where the exposure sits, and each trade against the stock price.
QTRX price and trades
Daily close with each Form 4 filing on this company marked: green = open-market buy, red = open-market sale, purple = grants, exercises, gifts and other non-market transactions. Marker size scales with the dollar value.
Shares held
Shares owned after each reported transaction on this company (direct holdings as reported).
Open-market buying and selling
by monthDollar value of open-market purchases (code P, up) and sales (code S, down) across all companies, by filing month. Grants, exercises and gifts are excluded.
Exposure by company
latestMost recently reported shares × current price. Faded bars (*) have had no filing in 3 years, so the person may no longer hold them. Click a bar to chart that company.
Filer Profile
MARLBOROUGH, MA 01752
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| AZTA | Interim CEO | 41,308 | $37.17 | $1.54M | $201.4K | 8 | 2026-10-23 |
| HAE | Director | 2,538 | $119.19 | $302.5K | $0 | 1 | 2026-07-28 |
| RGEN | Director | 8,381 | $180.17 | $1.51M | $641.9K | 8 | 2026-05-18 |
| HOLOGIC INC (HOLX) Delisted | Director | 10,841 | $76.01 | $824.0K | $300.8K | 4 | 2026-03-02 |
| QTRX | Director | 291,541 | $2.83 | $825.1K | -$3.11M | 44 | 2025-01-06 |
| LAB | Director | 104,111 | $0.60 | $62.5K | $0 | 5 | 2023-10-20 |
| MTD | Director | 3,749 | $1669.62 | $6.26M | -$1.22M | 9 | 2014-11-20 |
| Covidien plc (COV) Delisted | Director | 6,235 | — | — | $0 | 11 | 2014-02-24 |
| MILLIPORE CORP /MA (MIL) Delisted | CEO and President | 0 | — | — | $0 | 12 | 2010-07-16 |
Recent Filings · Page 2 of 11
103 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2025-05-19 | RGEN | Grant (A) | +973 | $0 | EDGAR |
| 2025-05-09 | HOLOGIC INC (HOLX) Delisted | Buy (P) | +5,445 | $300.8K | EDGAR |
| 2025-02-28 | HOLOGIC INC (HOLX) Delisted | Grant (A) | +1,864 | $0 | EDGAR |
| 2025-02-11 | AZTA | Grant (A) | — | $0 | EDGAR |
| 2025-01-06 | QTRX | Grant (A) | +7,435 | $0 | EDGAR |
| 2024-12-11 | HOLOGIC INC (HOLX) Delisted | Grant (A) | +342 | $0 | EDGAR |
| 2024-11-19 | AZTA | Buy (P) | +4,940 | $201.4K | EDGAR |
| 2024-06-14 | RGEN | Buy (P) | +1,615 | $201.8K | EDGAR |
| 2024-05-20 | RGEN | Grant (A) | +701 | $0 | EDGAR |
| 2024-02-13 | AZTA | Grant (A) | +2,465 | $162.5K | EDGAR |
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.