Hatsopoulos John — SEC Form 4 filings
SEC reporting owner CIK 1274775. 23 Form 4 filings on record with FilingPulse; latest filed 2026-03-23.
Transaction summary — filings shown
Covers all 23 filings on record, filed 2024-01-16 to 2026-03-23. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): 27 legs across 22 filings — 249,466 shares, $186,748 total (shares × price as filed).
- Open-market sales (code S, non-derivative): none reported.
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 2.
- Largest priced transaction: purchase of 100,000 shares @ $0.73 ($73,460) in TECOGEN INC., filed 2024-01-16.
By issuer — same filings
Open-market purchase/sale legs on non-derivative securities, grouped by issuer. Role is as filed on the newest filing for that issuer. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Issuer | Role (as filed) | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|---|
| TECOGEN INC. (TGEN) | Director | 23 | 27 legs · 249,466 sh · $186,748 | — | 2 |
Form 4 filings — Hatsopoulos John
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-03-23 | 4 | TECOGEN INC. (TGEN) | Option exercise (M): 50,000 @ $0.88 · Option exercise (M): 50,000 (derivative) @ $0.88 | EDGAR |
| 2024-09-27 | 4 | TECOGEN INC. (TGEN) | Purchase (P): 10,000 @ $0.84 | EDGAR |
| 2024-09-25 | 4 | TECOGEN INC. (TGEN) | Purchase (P): 10,000 @ $0.86 | EDGAR |
| 2024-08-20 | 4 | TECOGEN INC. (TGEN) | Purchase (P): 10,000 @ $0.90 | EDGAR |
| 2024-07-12 | 4 | TECOGEN INC. (TGEN) | Purchase (P): 22,466 @ $0.65 | EDGAR |
| 2024-05-29 | 4 | TECOGEN INC. (TGEN) | Purchase (P): 10,000 @ $0.80 | EDGAR |
| 2024-05-29 | 4 | TECOGEN INC. (TGEN) | Purchase (P): 1,265 @ $0.80 | EDGAR |
| 2024-05-28 | 4 | TECOGEN INC. (TGEN) | Purchase (P): 3,200 @ $0.79 · Purchase (P): 8,735 @ $0.80 | EDGAR |
| 2024-05-22 | 4 | TECOGEN INC. (TGEN) | Purchase (P): 13,800 @ $0.79 | EDGAR |
| 2024-05-17 | 4 | TECOGEN INC. (TGEN) | Purchase (P): 3,000 @ $0.75 | EDGAR |
| 2024-05-16 | 4 | TECOGEN INC. (TGEN) | Purchase (P): 10,000 @ $0.74 | EDGAR |
| 2024-04-24 | 4 | TECOGEN INC. (TGEN) | Purchase (P): 5,000 @ $0.67 | EDGAR |
| 2024-04-23 | 4 | TECOGEN INC. (TGEN) | Purchase (P): 5,000 @ $0.69 · Purchase (P): 1,000 @ $0.68 | EDGAR |
| 2024-04-16 | 4 | TECOGEN INC. (TGEN) | Purchase (P): 1,000 @ $0.70 | EDGAR |
| 2024-04-16 | 4 | TECOGEN INC. (TGEN) | Purchase (P): 1,000 @ $0.68 | EDGAR |
| 2024-04-12 | 4 | TECOGEN INC. (TGEN) | Purchase (P): 1,000 @ $0.70 | EDGAR |
| 2024-04-11 | 4 | TECOGEN INC. (TGEN) | Purchase (P): 1,000 @ $0.70 | EDGAR |
| 2024-04-09 | 4 | TECOGEN INC. (TGEN) | Purchase (P): 1,000 @ $0.70 | EDGAR |
| 2024-04-08 | 4 | TECOGEN INC. (TGEN) | Purchase (P): 1,000 @ $0.70 | EDGAR |
| 2024-04-02 | 4 | TECOGEN INC. (TGEN) | Purchase (P): 2,000 @ $0.70 · Purchase (P): 2,388 @ $0.70 · Purchase (P): 612 @ $0.70 · Purchase (P): 5,000 @ $0.70 | EDGAR |
| 2024-01-23 | 4 | TECOGEN INC. (TGEN) | Purchase (P): 10,000 @ $0.77 | EDGAR |
| 2024-01-19 | 4 | TECOGEN INC. (TGEN) | Purchase (P): 10,000 @ $0.73 | EDGAR |
| 2024-01-16 | 4 | TECOGEN INC. (TGEN) | Purchase (P): 100,000 @ $0.73 | EDGAR |
FilingPulse's Form 4 archive currently extends back to 2024-01-11 and is expanding backward through EDGAR history — earlier filings by this insider may not be indexed yet. Names and roles are shown as filed.
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