John Hatsopoulos

John Hatsopoulos is a declared insider at 2 companies; the most frequent names are Tecogen Inc. and Eurosite Power Inc. Between 6 January 2016 and 20 March 2026, the trades on record add up to 66 filings.

Every open-market trade on record is a purchase: 64 purchases worth €504k, and no sale. The totals exclude 1 filing filed without an amount. Buying on the open market means paying the going price with one's own funds, a different act from receiving shares as pay. Besides market trades, the filings include 1 option exercise.

In size, the median ticket on the buying side is €5,070. Of 64 purchases, 39 formed part of a group of insiders buying within 30 days of each other. Such overlaps are known as a cluster signal: distinct people reaching the same decision at about the same time. After 45 purchases with a full 90-day history, the hit rate stands at 51% and the median 90-day move at +5.6%. Past outcomes like these are no guarantee of what comes next.

The record was last updated on 23 March 2026 with an option exercise (€38k) in Tecogen Inc. The most recent open-market purchase was published on 27 September 2024, 751 days ago. Filings reach the SEC (Form 4) feed a median of 1 day after the trade. For comparison, the SEC allows two business days to file a Form 4. This summary is built from SEC (Form 4) disclosures alone and does not predict where the share price will go.