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US INSIDER PROFILE · NON-SCORING RESEARCH
Madaus Martin D
Director
Identity: SEC reporting-owner CIK · Reporting-owner CIK: 0001310268
Purchase history
- Companies traded
- 3
- Purchases · 12M
- 0
- Purchases · 24M
- 3
- Average purchase
- $234.7K
- Median purchase
- $201.8K
- Gross purchase value
- $704.0K
Companies: Azenta, Inc. | HOLOGIC INC | REPLIGEN CORP
3 SEC accession(s) · 0 joint-owner event(s). Values are reported Form 4 transaction values in USD.
Qualifying purchase disclosures
| Published | Company | Ticker | Role | Reported value | SEC source |
|---|---|---|---|---|---|
| 2025-08-12 | REPLIGEN CORP | RGEN | Director | $201.8K | Open filing |
| 2025-05-09 | HOLOGIC INC | HOLX | Director | $300.8K | Open filing |
| 2024-11-19 | Azenta, Inc. | AZTA | Director | $201.4K | Open filing |
Post-purchase outcomes
Excess return = stock return − S&P 500 ETF (SPY adjusted close) return. Returns start on the first shared trading session on or after publication.
No completed point-in-time price outcome is available yet.
Research patterns
- First purchase in 12M
- 0/—
- Large purchase ≥ $100k
- 3/3
- Cluster buying · 15D
- 1/3
- Buying the dip
- 0/—
Routine / opportunistic: Not classifiable. These labels never affect the score or ranking.
Small samples remain visible but are not scored. This research enrichment never affects US-v1.1.