Tecogen Inc. (TGEN)
NYSE: TGEN · Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip · North Billerica, MA · filing with the SEC since 2011
Who runs Tecogen Inc.
Officers and directors as they report to the SEC on Forms 3, 4 and 5, named as filedChief executive, as filed
Rangesh Abinand
Chief Executive Officer. First filing Mar 2022, latest Sep 8, 2026, 4 filings in all.
Officers reporting now
6
of 11 people with a filing in the last fifteen months
Directors reporting now
5
20 people on the record since 2013
Officerssales are open-market, Sep 30, 2025 to Sep 30, 2026
| Name | Title as filed | First filing | Latest filing | Sales, 12 months |
|---|---|---|---|---|
| Rangesh Abinand | Chief Executive Officer | Mar 2022 | Sep 8, 2026 | none |
| Panora Robert A | COO and President | Oct 2013 | Sep 8, 2026 | none |
| Deschenes Roger P. | Chief Financial Officer | Jun 2025 | Sep 8, 2026 | none |
| Lafaille Stephen | VP of Business Development | Mar 2025 | Sep 8, 2026 | none |
| Whiting John Kimball IV | General Counsel & Secretary | Apr 2020 | Sep 8, 2026 | none |
| Hatsopoulos John | Co-Chief Executive Officer | Oct 2013 | Mar 23, 2026 | none |
Directorssales are open-market, Sep 30, 2025 to Sep 30, 2026
| Name | Role | First filing | Latest filing | Sales, 12 months |
|---|---|---|---|---|
| Albertine John M | director | Dec 2022 | Jun 30, 2026 | none |
| Galiteva Angelina | director | Oct 2013 | Jun 30, 2026 | none |
| Ghoniem Ahmed | director | Oct 2013 | Jun 30, 2026 | none |
| Hirsch Susan B | director | Oct 2023 | Jun 30, 2026 | none |
| Lewis Earl R | director | Dec 2014 | Jun 30, 2026 | none |
Earlier names on the record11, newest filing first
Holubow Fred · director · last filing Jun 2023Jenkins Ralph · director · last filing Jun 2022Benjamin Locke M. · officer · last filing May 2022Pacheco Ann Marie Brown · 10% owner · last filing May 2022Petersen Deanna M · director · last filing Jul 2020Brown Bonnie Jean · officer · last filing Jun 2018Monovoukas Yiannis · 10% owner · last filing Jun 2017Maxwell Charlest · director · last filing May 2017Davidson Keith · director · last filing Sep 2016Garrison David A · officer · last filing May 2016Hatsopoulos George N · director · last filing Apr 2016
A person is listed as reporting now after a filing in the last fifteen months. The record shows when someone last filed; it does not say why they stopped. Each name links to the filings on sec.gov.