Hatsopoulos John (CIK 1274775) reported 1 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-03-23). Recent activity: Buy TGEN (50,000 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-03-23 | TECOGEN INC. (TGEN) | Director | Buy | 50,000 | $44,000 |
来源：SEC Form 4 申报文件 · 截至 2026-03-23