TGEN insider transaction filings
TECOGEN INC. — 50 most recent Form 4 filings from SEC EDGAR, normalized by FilingPulse. Latest filing: 2026-09-08. Screen TGEN transaction legs live →
Insider transaction summary — last 90 days
2026-06-24 to 2026-09-22, from the filings listed below: 15 Form 4 filings. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): none reported.
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 17.
By insider — same window
Open-market purchase/sale legs on non-derivative securities, grouped by the filing's reporting owner(s); joint filings appear once. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
Recent Form 4 filings — TECOGEN INC.
| Filed | Form | Insider | Reported transactions | Source |
|---|---|---|---|---|
| 2026-09-08 | 4/A | Rangesh Abinand — Chief Executive Officer, Director | Grant/award (A): 174,081 @ $0 | EDGAR |
| 2026-09-08 | 4/A | Deschenes Roger P. — Chief Financial Officer | Grant/award (A): 29,013 @ $0 | EDGAR |
| 2026-09-08 | 4/A | Panora Robert — COO and President | Grant/award (A): 9,671 @ $0 | EDGAR |
| 2026-09-08 | 4/A | Whiting John Kimball IV — General Counsel & Secretary | Grant/award (A): 19,342 @ $0 | EDGAR |
| 2026-09-08 | 4/A | Lafaille Stephen — VP of Business Development | Grant/award (A): 29,013 @ $0 | EDGAR |
| 2026-06-30 | 4 | Whiting John Kimball IV — General Counsel & Secretary | Grant/award (A): 19,342 | EDGAR |
| 2026-06-30 | 4 | Lafaille Stephen — VP of Business Development | Grant/award (A): 29,013 | EDGAR |
| 2026-06-30 | 4 | Panora Robert — COO and President | Grant/award (A): 9,671 · Grant/award (A): 26,041 (derivative) @ $5.17 | EDGAR |
| 2026-06-30 | 4 | Rangesh Abinand — Chief Executive Officer, Director | Grant/award (A): 174,081 · Grant/award (A): 26,041 (derivative) @ $5.17 | EDGAR |
| 2026-06-30 | 4 | Hirsch Susan B — Director | Grant/award (A): 25,000 (derivative) @ $5.17 | EDGAR |
| 2026-06-30 | 4 | Ghoniem Ahmed — Director | Grant/award (A): 25,000 (derivative) @ $5.17 | EDGAR |
| 2026-06-30 | 4 | Galiteva Angelina — Director | Grant/award (A): 25,000 (derivative) @ $5.17 | EDGAR |
| 2026-06-30 | 4 | Deschenes Roger P. — CAO | Grant/award (A): 29,013 | EDGAR |
| 2026-06-30 | 4 | Lewis Earl — Director | Grant/award (A): 25,000 (derivative) @ $5.17 | EDGAR |
| 2026-06-30 | 4 | ALBERTINE JOHN M — Director | Grant/award (A): 25,000 (derivative) @ $5.17 | EDGAR |
| 2026-04-27 | 4 | Ghoniem Ahmed — Director | Purchase (P): 12,723 @ $0.79 · Option exercise (M): 12,723 (derivative) @ $0.79 | EDGAR |
| 2026-04-14 | 4 | Hirsch Susan B — Director | Purchase (P): 5,000 @ $3.73 | EDGAR |
| 2026-03-27 | 4 | Hirsch Susan B — Director | Purchase (P): 10,000 @ $2.54 | EDGAR |
| 2026-03-27 | 4 | Lewis Earl — Director | Purchase (P): 5,000 @ $2.88 | EDGAR |
| 2026-03-27 | 4 | Lewis Earl — Director | Purchase (P): 5,000 @ $2.52 | EDGAR |
| 2026-03-23 | 4 | Whiting John Kimball IV — General Counsel & Secretary | Purchase (P): 10,000 @ $2.38 | EDGAR |
| 2026-03-23 | 4 | Rangesh Abinand — Chief Executive Officer, Director | Purchase (P): 3,000 @ $2.30 | EDGAR |
| 2026-03-23 | 4 | Deschenes Roger P. — CAO | Purchase (P): 10,000 @ $2.23 | EDGAR |
| 2026-03-23 | 4 | Hatsopoulos John — Director | Option exercise (M): 50,000 @ $0.88 · Option exercise (M): 50,000 (derivative) @ $0.88 | EDGAR |
| 2025-07-28 | 4 | Lafaille Stephen — VP of Business Development | Grant/award (A): 11,976 @ $0 · Grant/award (A): 24,075 (derivative) @ $8.35 | EDGAR |
| 2025-07-28 | 4 | Whiting John Kimball IV — General Counsel & Secretary | Grant/award (A): 11,976 @ $0 · Grant/award (A): 24,075 (derivative) @ $8.35 | EDGAR |
| 2025-07-28 | 4 | Rangesh Abinand — Chief Executive Officer, Director | Grant/award (A): 53,892 @ $0 · Grant/award (A): 24,075 (derivative) @ $8.35 · Grant/award (A): 12,048 (derivative) @ $8.35 | EDGAR |
| 2025-07-28 | 4 | Hirsch Susan B — Director | Grant/award (A): 25,000 (derivative) @ $8.35 | EDGAR |
| 2025-07-28 | 4 | GHONIEM AHMED — Director | Grant/award (A): 25,000 (derivative) @ $8.35 | EDGAR |
| 2025-07-28 | 4 | GALITEVA ANGELINA — Director | Grant/award (A): 25,000 (derivative) @ $8.35 | EDGAR |
| 2025-07-28 | 4 | Deschenes Roger P. — CAO | Grant/award (A): 17,964 @ $0 · Grant/award (A): 12,063 (derivative) @ $8.35 | EDGAR |
| 2025-07-28 | 4 | LEWIS EARL R — Director | Grant/award (A): 25,000 (derivative) @ $8.35 | EDGAR |
| 2025-07-28 | 4 | ALBERTINE JOHN M — Director | Grant/award (A): 25,000 (derivative) @ $8.35 | EDGAR |
| 2025-07-14 | 4/A | PANORA ROBERT A — COO and President | Sale (S): 26,000 @ $4.69 · Sale (S): 31,000 @ $5 · Option exercise (M): 12,723 @ $0.79 · Option exercise (M): 30,000 @ $0.71 · Option exercise (M): 52,500 @ $1.10 · Sale (S): 13,000 @ $5.03 · +5 more | EDGAR |
| 2025-07-14 | 4/A | PANORA ROBERT A — COO and President | Option exercise (M): 70,000 @ $0.71 · Option exercise (M): 70,000 (derivative) @ $0.71 | EDGAR |
| 2025-06-24 | 4 | Lafaille Stephen — VP of Business Development | Purchase (P): 400 @ $2.50 · Option exercise/expiry (X): 10,000 @ $0.71 · Sale (S): 10,000 @ $4.88 · Option exercise/expiry (X): 15,000 @ $0.71 · Sale (S): 15,000 @ $5 · Option exercise/expiry (X): 25,000 @ $1.10 · +7 more | EDGAR |
| 2025-06-20 | 4 | PANORA ROBERT A — COO and President | Option exercise/expiry (X): 12,723 @ $0.79 · Option exercise/expiry (X): 30,000 @ $0.71 · Option exercise/expiry (X): 52,500 @ $1.10 | EDGAR |
| 2025-06-02 | 4 | PANORA ROBERT A — COO and President | Option exercise/expiry (X): 70,000 (derivative) @ $0.71 | EDGAR |
| 2025-05-07 | 4 | LEWIS EARL R — Director | Option exercise/expiry (X): 15,000 @ $1.75 · Option exercise/expiry (X): 12,500 @ $1.20 · Option exercise/expiry (X): 6,250 @ $1.10 | EDGAR |
| 2025-05-05 | 4 | LEWIS EARL R — Director | Other (J): 240,256 @ $2.14 | EDGAR |
| 2025-03-25 | 4/A | LEWIS EARL R — Director | Option exercise/expiry (X): 100,000 @ $0.71 · Option exercise (M): 100,000 (derivative) @ $0.71 | EDGAR |
| 2025-03-25 | 4/A | LEWIS EARL R — Director | Purchase (P): 2,000 @ $0.80 | EDGAR |
| 2025-03-25 | 4/A | LEWIS EARL R — Director | Purchase (P): 10,000 @ $0.68 | EDGAR |
| 2024-12-06 | 4 | LEWIS EARL R — Director | Purchase (P): 100,000 @ $0.71 | EDGAR |
| 2024-12-06 | 4 | LEWIS EARL R — Director | Purchase (P): 2,000 @ $0.80 | EDGAR |
| 2024-09-27 | 4 | HATSOPOULOS JOHN — Director | Purchase (P): 10,000 @ $0.84 | EDGAR |
| 2024-09-25 | 4 | HATSOPOULOS JOHN — Director | Purchase (P): 10,000 @ $0.86 | EDGAR |
| 2024-08-20 | 4 | HATSOPOULOS JOHN — Director | Purchase (P): 10,000 @ $0.90 | EDGAR |
| 2024-07-17 | 4 | LEWIS EARL R — Director | Purchase (P): 10,000 @ $0.68 | EDGAR |
| 2024-07-15 | 4 | LEWIS EARL R — Director | Purchase (P): 10,000 @ $0.68 | EDGAR |
Recent 8-K events — TECOGEN INC.
| Filed | Form | Items reported | Source |
|---|---|---|---|
| 2026-08-31 | 8-K | 8.01 — Other Events 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-08-12 | 8-K | 2.02 — Results of Operations and Financial Condition 7.01 — Regulation FD Disclosure 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-07-01 | 8-K | 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers | EDGAR |
| 2026-06-05 | 8-K | 5.07 — Submission of Matters to a Vote of Security Holders | EDGAR |
| 2026-05-12 | 8-K | 2.02 — Results of Operations and Financial Condition 7.01 — Regulation FD Disclosure 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-04-08 | 8-K | 8.01 — Other Events 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-03-18 | 8-K | 2.02 — Results of Operations and Financial Condition 7.01 — Regulation FD Disclosure 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-01-07 | 8-K | 7.01 — Regulation FD Disclosure | EDGAR |
| 2025-11-12 | 8-K | 2.02 — Results of Operations and Financial Condition 7.01 — Regulation FD Disclosure 9.01 — Financial Statements and Exhibits | EDGAR |
| 2025-09-17 | 8-K | 7.01 — Regulation FD Disclosure 9.01 — Financial Statements and Exhibits | EDGAR |
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