Martin D. Madaus

Martin D. Madaus is a declared insider at 6 companies (board member); the most frequent names are Quanterix Corp, Repligen Corp and Hologic Inc. We count 30 filings; the first trade dates from 1 July 2021 and the latest from 22 September 2026.

The open-market record is one-sided, with 5 purchases worth €1.5M and not one sale. Buying on the open market means paying the going price with one's own funds, a different act from receiving shares as pay. Other entries cover 22 share grants.

In size, the median ticket on the buying side is €190k. Of 5 purchases, 3 formed part of a group of insiders buying within 30 days of each other. A cluster is several different insiders buying the same stock within a short window, a pattern studied more closely than a single purchase. After 4 purchases with a full 90-day history, the hit rate stands at 75% and the median 90-day move at +14.3%. These figures describe past trades and do not predict future prices.

The newest entry dates from 23 September 2026: a share grant of €44k, in Azenta, Inc. The last insider purchase was made public on 12 August 2025, 432 days ago. The median gap between a trade and its publication by SEC (Form 4) is 2 days. The legal deadline for a Form 4 is two business days after the transaction. Source: insider filings from SEC (Form 4). Past trades are no guide to future returns.