Martin D Madaus

Martin D Madaus

Board Member · REPLIGEN CORP

Rank #19,525 SEC EDGAR (United States) ↗ Files from United States

Details

Member of the boardPharmaceuticals & BiotechnologyRGENSEC CIK 0001310268

Computed from SEC EDGAR filings and closing prices — not copied from any wealth ranking. Dataset . How we calculate this.

Disclosed holdings
$2.3M
1-day change
▲ 0.82%
Positions on file
4
issuers disclosed in Forms 3/4/5 and Schedules 13D/G

Disclosed holdings over time 53 weekly points

What the 3 currently disclosed positions would have been worth at each week’s closing price. A rising line means the shares got more valuable, not that this person bought more.

How the line is built

Share counts are as last reported to the SEC and held constant; only prices move.

2025-09-05$1.7M – $3.9M2026-09-04

Insider activity May 16, 2024 – Feb 26, 2026

Martin D Madaus is recorded in filings to the U.S. SEC via EDGAR as member of the board, and reported 11 transactions between May 16, 2024 and Feb 26, 2026. The buy and sell totals below count only codes P, S.

Why the other codes are excluded

Share awards (A), shares withheld to pay tax (F), option exercises (M) and gifts (G) also appear in the table, but they are consequences of a pay package or a private transfer, not a decision to buy or sell on the open market. Counting them would turn this into a compensation ranking.

Open-market buys (code P)
$905.8K
5 purchases on file priced rows only
Open-market sales (code S)
None
0 sales on file
All reported transactions
11
every code, including awards and exercises
Pattern
Net buyer in the final 12 months of the window
last 12 months of the window

Events from filings

Detected automatically in the filings linked below. Each headline is built from the numbers in those filings, not written by a model. Newest first; events older than 45 days stay listed and are marked as older.

4 insiders bought Azenta, Inc. (AZTA) shares worth $1,288,808 between Nov 18, 2024 and Nov 19, 2024

Cluster buying

4 different insiders made 5 open-market purchases of this company’s shares within a short window. Each row below is one reported trade.

4 insiders bought Azenta, Inc. (AZTA) shares worth $1,288,808 between Nov 18, 2024 and Nov 19, 2024
Date Insider Transaction Shares Price Value Filing
Nov 18, 2024 Didier Hirsch P Open-market purchase 1,000 held after: 3,465 $39.50 $39,500 SEC filing ↗
Nov 18, 2024 William L Cornog P Open-market purchase 12,500 held after: 14,755 $39.60 $495,000 SEC filing ↗
Nov 18, 2024 John Marotta P Open-market purchase 12,716.98 held after: 99,611.98 $39.48 $502,066 SEC filing ↗
Nov 19, 2024 Martin D Madaus P Open-market purchase 4,940 held after: 7,405 $40.77 $201,404 SEC filing ↗
Nov 19, 2024 John Marotta P Open-market purchase 1,250 held after: 100,861.98 $40.67 $50,838 SEC filing ↗

Total of the rows above: $1,288,808, in the currency the filings report.

Source: SEC EDGAR (United States); every row links to where it was published. Event computed Sep 14, 2026.

Reported transactions

Price 0.00 is a real reported figure on gifts (G) and share awards (A) — not a missing number. The 15 most recent rows are grouped into 13 lines by date, company and transaction type — open a line to see every lot with its own source link.

How to read this list

Every row is one line of one Form 4 or Form 5, with the filing it came from. Where the record carries no price at all we leave the cell empty instead of guessing one.

The shares and money on a grouped line add up only the lots listed inside that line, and only when every one of them carries the figure. Where a group mixes more than one reporting currency we leave the money blank rather than convert — no source publishes the rate that conversion would need.

  1. HAEMONETICS CORP HAE A Grant or awardnot a buy/sell decisionreported at zero 2,538 shares $0 at $0.00 SEC filing ↗
  2. REPLIGEN CORP RGEN A Grant or awardnot a buy/sell decisionreported at zero 995 shares $0 at $0.00 SEC filing ↗
  3. HOLOGIC INC HOLX D Disposition to the issuer × 2not a buy/sell decisionreported at zero 10,841 shares $0
    The 2 lots that make up this line, each with the source behind it.
    Shares Price Value Filing
    5,445 $0.00reported at zero $0 SEC filing ↗
    5,396 $0.00reported at zero $0 SEC filing ↗
  4. HOLOGIC INC HOLX A Grant or awardnot a buy/sell decisionreported at zero 3,190 shares $0 at $0.00 SEC filing ↗
  5. REPLIGEN CORP RGEN P Open-market purchase 1,800 shares $201.8K at $112.13 SEC filing ↗
  6. REPLIGEN CORP RGEN A Grant or awardnot a buy/sell decisionreported at zero 973 shares $0 at $0.00 SEC filing ↗
  7. HOLOGIC INC HOLX P Open-market purchase 5,445 shares $300.8K at $55.24 SEC filing ↗
  8. HOLOGIC INC HOLX A Grant or awardnot a buy/sell decisionreported at zero 1,864 shares $0 at $0.00 SEC filing ↗
  9. Quanterix Corp QTRX A Grant or awardnot a buy/sell decisionreported at zero 7,435 shares $0 at $0.00 SEC filing ↗
  10. HOLOGIC INC HOLX A Grant or awardnot a buy/sell decisionreported at zero 342 shares $0 at $0.00 SEC filing ↗
  11. Azenta, Inc. AZTA P Open-market purchase 4,940 shares $201.4K at $40.77 SEC filing ↗
  12. REPLIGEN CORP RGEN P Open-market purchase × 2 1,615 shares $201.8K
    The 2 lots that make up this line, each with the source behind it.
    Shares Price Value Filing
    700 $125.46 $87.8K SEC filing ↗
    915 $124.54 $114.0K SEC filing ↗
  13. REPLIGEN CORP RGEN A Grant or awardnot a buy/sell decisionreported at zero 701 shares $0 at $0.00 SEC filing ↗

Disclosed holdings

Shares is the amount on the form; value is that amount times the closing price shown. Rows with no closing price are left blank, so they may add up to less than the headline figure.

What is not counted here

Each row is one filing you can open. Private companies, real estate, bonds and crypto are not in SEC insider filings and are therefore not counted here.

Equity positions disclosed to the SEC, with the source filing behind each row.
Issuer Ticker Security Shares Close Value Form Reported Filing
REPLIGEN CORP RGEN Common Stock 7,397 $167.60 $1.2M 4 EDGAR ↗
Quanterix Corp QTRX Common Stock (indirect) 291,541 $2.69 $784.2K 4 EDGAR ↗
Azenta, Inc. AZTA Common 7,405 $31.33 $232.0K 4 EDGAR ↗
HOLOGIC INC HOLX Common Stock (indirect) 10,841 — — 4 EDGAR ↗

Other insiders at the same companies

People who also file with the SEC at a company where Martin D Madaus reports shares.

Sharing a filing does not mean they work together day to day — it means both names appear on the same issuer’s insider record.

Sources

The filings linked in the tables above are the sources for every figure on this page.

Portrait photograph: Azenta, Inc. (company-published photograph). Original file page on azenta.com ↗

Think a number here is wrong? Open the linked filing and compare — how to report it.

Profile record last refreshed Sep 8, 2026.