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
$7.74M
Companies
8
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 | $145.34 | $1.22M | $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 | $28.93 | $214.2K | $201.4K | 5 | 2026-02-06 |
| QTRX | Director | 291,541 | $3.49 | $1.02M | -$3.11M | 44 | 2025-01-06 |
| LAB | Director | 104,111 | $0.79 | $82.7K | $0 | 5 | 2023-10-20 |
| MTD | Director | 3,749 | $1388.38 | $5.21M | -$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 10
99 filingsInsider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 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 |
| 2024-01-04 | QTRX | Grant (A) | +2,947 | $0 | EDGAR |
| 2023-10-20 | LAB | Grant (A) | +1,574 | $4.0K | EDGAR |
| 2023-06-16 | LAB | Grant (A) | +26,376 | $0 | EDGAR |
| 2023-05-22 | RGEN | Grant (A) | +686 | $0 | EDGAR |
Form 4 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.
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.
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.