TECOGEN INC. (TGEN) has 117 open-market insider trades by 15 insiders since 2006. Over the last six months insiders net bought $10K. The most active filer is John Hatsopoulos, Director.
| Name | Title | Tier | Trades | Value | Last Trade |
|---|---|---|---|---|---|
| Austin W. & Greenhouse David M. Marxe | 10% | — | 11 | $791K | 2009-10-12 |
| Robert A. Panora | PresCOO | — | 1 | $673K | 2025-06-24 |
| John Hatsopoulos | Dir | — | 64 | $668K | 2026-03-20 |
| Stephen Lafaille | VP | — | 1 | $347K | 2026-06-26 |
| Earl R. Lewis | Dir | — | 19 | $264K | 2025-05-06 |
| Charlest Maxwell | CLOSecretary | — | 3 | $225K | 2026-06-26 |
| David A. Garrison | CFOSecretary | — | 3 | $54K | 2015-06-01 |
| Earl Lewis | Dir | — | 2 | $54K | 2026-03-27 |
| Susan B. Hirsch | Dir | — | 3 | $49K | 2026-04-13 |
| John Kimball Whiting IV | CLOSecretary | — | 1 | $24K | 2026-06-26 |
| Insider | Title | Type | Value | Date |
|---|---|---|---|---|
| Ahmed Ghoniem | Director | Buy | $10K | 2026-04-24 |
| Susan B. Hirsch | Director | Buy | $19K | 2026-04-13 |
| Earl Lewis | Director | Buy | $25K | 2026-03-27 |
| Susan B. Hirsch | Director | Buy | $25K | 2026-03-27 |
| Earl Lewis | Director | Buy | $29K | 2026-03-26 |
| John Kimball Whiting IV | CLO & Secretary | Buy | $24K | 2026-03-23 |
Companies that share insiders with TGEN, and sector peers with recent insider buying. Related by who files, not by how the stocks move.
| Roger P. Deschenes | CAO | Buy | $22K | 2026-03-20 |
| Abinand Rangesh | CEO | Buy | $14K | 2026-03-20 |
| Robert A. Panora | President & COO | Sell | $673K | 2025-06-03 |
| Stephen Lafaille | VP | Sell | $346K | 2025-06-03 |
| Stephen Lafaille | VP of Business Development | Buy | $1K | 2025-03-03 |
| Earl R. Lewis | Director | Buy | $71K | 2024-11-22 |
| John Hatsopoulos | Director | Buy | $8K | 2024-09-27 |
| John Hatsopoulos | Director | Buy | $9K | 2024-09-25 |
| John Hatsopoulos | Director | Buy | $9K | 2024-08-19 |