Lafaille Stephen (CIK 2074096) reported 11 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-06-30). Recent activity: Buy TGEN (29,013 shares), Buy TGEN (11,976 shares), Buy TGEN (400 shares), Buy TGEN (10,000 shares), Sell TGEN (10,000 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-30 | TECOGEN INC. (TGEN) | VP of Business Development | Buy | 29,013 | $0 |
| 2025-07-28 | TECOGEN INC. (TGEN) | VP of Business Development | Buy | 11,976 | $0 |
| 2025-06-24 | TECOGEN INC. (TGEN) | VP of Business Development | Buy | 400 | $1,000 |
| 2025-06-24 | TECOGEN INC. (TGEN) | VP of Business Development | Buy | 10,000 | $7,100 |
| 2025-06-24 | TECOGEN INC. (TGEN) | VP of Business Development | Sell | 10,000 | $48,800 |
| 2025-06-24 | TECOGEN INC. (TGEN) | VP of Business Development | Buy | 15,000 | $10,650 |
| 2025-06-24 | TECOGEN INC. (TGEN) | VP of Business Development | Sell | 15,000 | $75,000 |
| 2025-06-24 | TECOGEN INC. (TGEN) | VP of Business Development | Buy | 25,000 | $27,500 |
| 2025-06-24 | TECOGEN INC. (TGEN) | VP of Business Development | Sell | 25,000 | $149,500 |
| 2025-06-24 | TECOGEN INC. (TGEN) | VP of Business Development | Buy | 10,000 | $11,000 |
| 2025-06-24 | TECOGEN INC. (TGEN) | VP of Business Development | Sell | 10,000 | $72,500 |
Source: SEC Form 4 filings · as of 2026-06-30