Who
John Hatsopoulos
Director
Company insider
Files Form 4 as: Co-Chief Executive Officer, Tecogen; Co-Chief Executive Officer, American Dg Energy; Chairman of the Board, Eurosite Power; Director, Agenus; Director, American Caresource Holdings; Chairman of the Board, GlenRose Instruments.
In numbers
- Trades disclosed
- 245
- Buys
- 166
- Sells
- 1
- Bought
- $3.3M
- Sold
- $0
- Companies
- 6
- Companies where not an officer
- 2
- First trade
- 12 Dec 2006
- Last trade
- 20 Mar 2026
- Last filed
- 23 Mar 2026
Companies traded
Activity over time
1 Nov 2024 – 1 Oct 2026
Buys above the line, sells below, each month.
Every trade
| Traded | Company | What | Amount | |
|---|---|---|---|---|
| 20 Mar 2026filed 23 Mar 2026 | TGEN TecogenMachinery | SEC FORM 4 Code M | $44K50,000 at $0.88 | filing |
| 20 Mar 2026filed 23 Mar 2026 | TGEN Tecogenoption or derivative · Machinery | SEC FORM 4 Code M | $44K50,000 at $0.88 | filing |
| 20 Mar 2026filed 23 Mar 2026 | TGEN Tecogenoption or derivative · Machinery | SEC FORM 4 Code M | $44K50,000 at $0.88 | filing |
| 20 Mar 2026filed 23 Mar 2026 | TGEN TecogenMachinery | SEC FORM 4 Code M | $44K50,000 at $0.88 | filing |
| 27 Sep 2024filed 27 Sep 2024 | TGEN TecogenMachinery | SEC FORM 4 Bought | $8,40010,000 at $0.84 | filing |
| 25 Sep 2024filed 25 Sep 2024 | TGEN TecogenMachinery | SEC FORM 4 Bought | $8,60010,000 at $0.86 | filing |
| 19 Aug 2024filed 20 Aug 2024 | TGEN TecogenMachinery | SEC FORM 4 Bought | $9,00010,000 at $0.90 | filing |
| 10 Jul 2024filed 12 Jul 2024 | TGEN TecogenMachinery | SEC FORM 4 Bought | $15K22,466 at $0.65 | filing |
| 29 May 2024filed 29 May 2024 | TGEN TecogenMachinery | SEC FORM 4 Bought | $8,00010,000 at $0.80 | filing |
| 28 May 2024filed 29 May 2024 | TGEN TecogenMachinery | SEC FORM 4 Bought | $1,0121,265 at $0.80 | filing |
| 24 May 2024filed 28 May 2024 | TGEN TecogenMachinery | SEC FORM 4 Bought | $6,9888,735 at $0.80 | filing |
| 22 May 2024filed 28 May 2024 | TGEN TecogenMachinery | SEC FORM 4 Bought | $2,5283,200 at $0.79 | filing |
| 21 May 2024filed 22 May 2024 | TGEN TecogenMachinery | SEC FORM 4 Bought | $11K13,800 at $0.79 | filing |
| 16 May 2024filed 17 May 2024 | TGEN TecogenMachinery | SEC FORM 4 Bought | $2,2503,000 at $0.75 | filing |
| 15 May 2024filed 16 May 2024 | TGEN TecogenMachinery | SEC FORM 4 Bought | $7,40010,000 at $0.74 | filing |
| 24 Apr 2024filed 24 Apr 2024 | TGEN TecogenMachinery | SEC FORM 4 Bought | $3,3505,000 at $0.67 | filing |
| 23 Apr 2024filed 23 Apr 2024 | TGEN TecogenMachinery | SEC FORM 4 Bought | $3,4505,000 at $0.69 | filing |
| 23 Apr 2024filed 23 Apr 2024 | TGEN TecogenMachinery | SEC FORM 4 Bought | $6801,000 at $0.68 | filing |
| 16 Apr 2024filed 16 Apr 2024 | TGEN TecogenMachinery | SEC FORM 4 Bought | $6801,000 at $0.68 | filing |
| 15 Apr 2024filed 16 Apr 2024 | TGEN TecogenMachinery | SEC FORM 4 Bought | $7001,000 at $0.70 | filing |
News
Agenus Inc.: Agenus Reports 72% of Patients with Locally Advanced dMMR Colon Cancer Had No Cancer Remaining at Surgery Following Six Weeks of BOT+BAL in Phase 2 NEOASIS Study at ESMO 2026AGEN · finanznachrichten.de · 25 Oct 2026Tecogen, Inc.: Data Center Cuts Electric Bills Substantially with Tecogen's InVerdeTGEN · finanznachrichten.de · 14 Oct 2026
0 headlines in the last 90 days name John Hatsopoulos; 2 articles from the last 14 days about the 2 companies they traded most, at most three about any one of them.