Updated Jul 16, 2026
Hatsopoulos John is a corporate insider tracked by InsiderAlpha. No SEC Form 4 filings recorded in the last 90 days.

John Hatsopoulos is a prominent figure in the energy sector, known for his role as a director at Tecogen Inc., a company specializing in clean energy solutions. He has a background in engineering and has been involved in various ventures related to energy efficiency and sustainable technologies.
| Role | Director |
|---|---|
| Notability | 70/100 |
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-03-23 | TGEN | TECOGEN INC. | M — Option exercise | 50.0K | $0.88 | $44K |
John Hatsopoulos is a prominent figure in the energy sector, known for his role as a director at Tecogen Inc., a company specializing in clean energy solutions. He has a background in engineering and has been involved in various ventures related to energy efficiency and sustainable technologies.…
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