Hirsch Susan B (CIK 1827663) reported 2 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-04-14). Recent activity: Buy TGEN (5,000 shares), Buy TGEN (10,000 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-04-14 | TECOGEN INC. (TGEN) | Director | Buy | 5,000 | $18,650 |
| 2026-03-27 | TECOGEN INC. (TGEN) | Director | Buy | 10,000 | $25,400 |
Source: SEC Form 4 filings · as of 2026-04-14