Earl R. Lewis

Earl R. Lewis, listed as board member, has filed trades across 3 companies (mainly through SEC (Form 4)), most often in Tecogen Inc., Flir Systems Inc and Harvard Bioscience Inc. Between 2 December 2015 and 6 May 2025, the trades on record add up to 28 filings.

Purchases make up the whole of the open-market record (22 purchases, €204k). The amount is not disclosed for 1 filing. A purchase on the market is a deliberate choice to commit personal money, which is why it draws more attention than a grant. Besides market trades, the filings include 4 share grants. So far in 2025, the count stands at 2 purchases and no sales.

In size, the median ticket on the buying side is €6,250. On 15 out of 18 purchases, another insider of the same company was buying within the same 30 days. A cluster is several different insiders buying the same stock within a short window, a pattern studied more closely than a single purchase.

On 7 May 2025 came the latest disclosure, a share grant for €23k in Tecogen Inc. The latest purchase dates back some time: it was published 572 days ago, on 25 March 2025. Between a trade and the moment it shows up on SEC (Form 4), the median delay is 2 days. For comparison, the SEC allows two business days to file a Form 4. Source: insider filings from SEC (Form 4). Past trades are no guide to future returns.