List of insiders holdings for TECOGEN INC.:
- Shares directly owned by the insider.
- Shares indirectly owned by the insider.
- Total shares owned by the insider (sum of shares directly and indirectly owned).
- Total market value if available.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
| # | Insider Holder Name | Report Date Time | Shares Owned Directly Indirectly | Total Shares Owned | Filing |
| 1 | Pacheco Ann Marie Brown Trustee 10% Owner | 2022-05-10 11:05:45 | 3,706,454 0 | 3,706,454 | Form 13G |
| 2 | Monovoukas Yiannis 10% Owner | 2017-06-22 20:03:17 | 7,381 2,610,524 | 2,617,905 | Form 3 |
| 3 | HATSOPOULOS JOHN J&P ENTERPRISES LLC Chief Executive Officer 10% Owner | 2019-03-26 11:32:35 | 2,322,596 0 | 2,322,596 | Form 13G |
| 4 | HATSOPOULOS GEORGE N HATSOPOULOS FAMILY 2012 TRUST Director 10% Owner | 2016-12-14 16:55:11 | 1,355,541 0 | 1,355,541 | Form 13G |
| 5 | HATSOPOULOS GEORGE N 10% Owner | 2016-12-14 16:55:11 | 1,355,541 0 | 1,355,541 | Form 13G |
| 6 | Hatsopoulos John Director | 2026-03-23 14:32:27 | 1,038,951 0 | 1,038,951 | Form 4 |
| 7 | Lewis Earl Director | 2026-03-27 14:44:15 | 1,011,006 0 | 1,011,006 | Form 4 |
| 8 | Benjamin Locke M. CEO | 2022-05-06 16:49:13 | 812,718 0 | 812,718 | Form 3/A |
| 9 | MAXWELL CHARLEST Director | 2017-05-25 18:14:40 | 360,311 0 | 360,311 | Form 4 |
| 10 | Hirsch Susan B Director | 2026-03-27 16:24:32 | 260,416 0 | 260,416 | Form 4 |
| 11 | GHONIEM AHMED Director | 2025-07-28 10:59:24 | 237,723 0 | 237,723 | Form 4 |
| 12 | GALITEVA ANGELINA Director | 2025-07-28 10:55:01 | 225,000 0 | 225,000 | Form 4 |
| 13 | HOLUBOW FRED Director | 2023-06-15 15:45:07 | 175,000 0 | 175,000 | Form 4 |
| 14 | ALBERTINE JOHN M Director | 2025-07-28 12:40:33 | 175,000 0 | 175,000 | Form 4 |
| 15 | PANORA ROBERT A COO and President | 2025-07-14 09:02:25 | 162,523 0 | 162,523 | Form 4/A |
| 16 | Jenkins Ralph Director | 2022-06-28 18:32:33 | 150,000 0 | 150,000 | Form 4 |
| 17 | Davidson Keith Director | 2016-09-20 13:37:05 | 125,000 9,044 | 134,044 | Form 3 |
| 18 | Petersen Deanna M Director | 2020-07-21 11:46:02 | 109,200 0 | 109,200 | Form 4 |
| 19 | BROWN BONNIE JEAN Chief Accounting Officer | 2018-06-01 15:26:19 | 98,400 0 | 98,400 | Form 4 |
| 20 | Lafaille Stephen VP of Business Development | 2025-07-28 11:12:02 | 85,313 0 | 85,313 | Form 4 |
| 21 | Rangesh Abinand Chief Executive Officer | 2026-03-23 14:33:46 | 67,193 0 | 67,193 | Form 4 |
| 22 | Deschenes Roger P. CAO | 2026-03-23 14:34:33 | 52,962 0 | 52,962 | Form 4 |
| 23 | Whiting John Kimball IV General Counsel & Secretary | 2026-03-23 14:35:20 | 22,612 0 | 22,612 | Form 4 |
| 24 | GARRISON DAVID A CFO, Treasurer and Secretary | 2016-05-18 16:49:06 | 6,362 0 | 6,362 | Form 4 |
| 25 | AOUN JOSEPH E Director | 2014-05-22 15:37:01 | 0 0 | 0 | Form 3 |