TECOGEN INC. — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| Lafaille Stephen | VP of Business Development | Award / Grant | 11,976 | — | — | 12,376 | Jul 24, 2025 |
| Whiting John Kimball IV | General Counsel & Secretary | Award / Grant | 11,976 | — | — | 12,612 | Jul 24, 2025 |
| Deschenes Roger P. | CAO | Award / Grant | 17,964 | — | — | 42,962 | Jul 24, 2025 |
| Rangesh Abinand | Chief Executive Officer | Award / Grant | 53,892 | — | — | 64,193 | Jul 24, 2025 |
| PANORA ROBERT A | COO and President | Sale | 900 | $6.86 | $6,174 | 62,523 | Jun 16, 2025 |
| PANORA ROBERT A | COO and President | X | 12,723 | $0.79 | $10,051 | 82,723 | Jun 16, 2025 |
| PANORA ROBERT A | COO and President | Option Exercise | 70,000 | $0.71 | $49,700 | 70,000 | May 27, 2025 |
| LEWIS EARL R | — | X | 6,250 | $1.10 | $6,875 | 1,001,006 | May 6, 2025 |
| LEWIS EARL R | — | Other | 240,256 | $2.14 | $514,148 | 967,256 | May 1, 2025 |
| Lafaille Stephen | VP of Business Development | Sale | 15,000 | $5.00 | $75,000 | 400 | Mar 3, 2025 |
| LEWIS EARL R | — | X | 100,000 | $0.71 | $71,000 | 727,000 | Nov 22, 2024 |
| LEWIS EARL R | — | Purchase | 100,000 | $0.71 | $71,000 | 737,000 | Nov 22, 2024 |
| HATSOPOULOS JOHN | — | Purchase | 10,000 | $0.84 | $8,400 | 988,951 | Sep 27, 2024 |
| HATSOPOULOS JOHN | — | Purchase | 10,000 | $0.86 | $8,600 | 978,951 | Sep 25, 2024 |
| HATSOPOULOS JOHN | — | Purchase | 10,000 | $0.90 | $9,000 | 968,951 | Aug 19, 2024 |
| LEWIS EARL R | — | Purchase | 10,000 | $0.68 | $6,800 | 625,000 | Jul 15, 2024 |
| LEWIS EARL R | — | Purchase | 10,000 | $0.68 | $6,800 | 635,000 | Jul 15, 2024 |
| LEWIS EARL R | — | Purchase | 10,000 | $0.68 | $6,800 | 625,000 | Jul 15, 2024 |
| HATSOPOULOS JOHN | — | Purchase | 22,466 | $0.65 | $14,603 | 958,951 | Jul 10, 2024 |
| HATSOPOULOS JOHN | — | Purchase | 10,000 | $0.80 | $8,000 | 935,220 | May 29, 2024 |
| HATSOPOULOS JOHN | — | Purchase | 1,265 | $0.80 | $1,012 | 936,485 | May 28, 2024 |
| HATSOPOULOS JOHN | — | Purchase | 3,200 | $0.79 | $2,528 | 916,485 | May 24, 2024 |
| HATSOPOULOS JOHN | — | Purchase | 13,800 | $0.79 | $10,902 | 913,285 | May 21, 2024 |
| HATSOPOULOS JOHN | — | Purchase | 3,000 | $0.75 | $2,250 | 899,485 | May 16, 2024 |
| HATSOPOULOS JOHN | — | Purchase | 10,000 | $0.74 | $7,400 | 896,485 | May 15, 2024 |
| LEWIS EARL R | — | Purchase | 5,000 | $0.75 | $3,750 | 615,000 | May 1, 2024 |
| LEWIS EARL R | — | Purchase | 10,000 | $0.68 | $6,800 | 610,000 | Apr 24, 2024 |
| HATSOPOULOS JOHN | — | Purchase | 5,000 | $0.67 | $3,350 | 886,485 | Apr 24, 2024 |
| HATSOPOULOS JOHN | — | Purchase | 5,000 | $0.69 | $3,450 | 880,485 | Apr 23, 2024 |
| HATSOPOULOS JOHN | — | Purchase | 1,000 | $0.68 | $680 | 875,485 | Apr 16, 2024 |
| HATSOPOULOS JOHN | — | Purchase | 1,000 | $0.70 | $700 | 874,485 | Apr 15, 2024 |
| HATSOPOULOS JOHN | — | Purchase | 1,000 | $0.70 | $700 | 873,485 | Apr 12, 2024 |
| HATSOPOULOS JOHN | — | Purchase | 1,000 | $0.70 | $700 | 872,485 | Apr 11, 2024 |
| HATSOPOULOS JOHN | — | Purchase | 1,000 | $0.70 | $700 | 871,485 | Apr 9, 2024 |
| HATSOPOULOS JOHN | — | Purchase | 1,000 | $0.70 | $700 | 870,485 | Apr 8, 2024 |
| HATSOPOULOS JOHN | — | Purchase | 2,388 | $0.70 | $1,672 | 863,873 | Mar 27, 2024 |
| LEWIS EARL R | — | Purchase | 9,152 | $0.78 | $7,139 | 560,835 | Jan 24, 2024 |
| LEWIS EARL R | — | Purchase | 10,000 | $0.68 | $6,800 | 551,683 | Jan 23, 2024 |
| HATSOPOULOS JOHN | — | Purchase | 10,000 | $0.77 | $7,700 | 859,485 | Jan 22, 2024 |
| HATSOPOULOS JOHN | — | Purchase | 10,000 | $0.73 | $7,300 | 849,485 | Jan 18, 2024 |
| HATSOPOULOS JOHN | — | Purchase | 100,000 | $0.73 | $73,000 | 839,485 | Jan 16, 2024 |
| HATSOPOULOS JOHN | — | Purchase | 25,000 | $0.80 | $20,000 | 739,485 | Dec 27, 2023 |
| HATSOPOULOS JOHN | — | Purchase | 25,000 | $0.80 | $20,000 | 714,485 | Dec 22, 2023 |
| HATSOPOULOS JOHN | — | Purchase | 44,000 | $0.90 | $39,600 | 689,485 | Dec 14, 2023 |
| HATSOPOULOS JOHN | — | Purchase | 4,000 | $0.85 | $3,400 | 639,485 | Nov 20, 2023 |
| HATSOPOULOS JOHN | — | Purchase | 46,000 | $0.85 | $39,100 | 635,485 | Nov 17, 2023 |
| HATSOPOULOS JOHN | — | Purchase | 100 | $0.85 | $85 | 589,485 | Nov 14, 2023 |
| Hirsch Susan B | — | Purchase | 5,000 | $0.92 | $4,600 | 250,416 | Oct 19, 2023 |
| LEWIS EARL R | — | Purchase | 25,000 | $0.91 | $22,750 | 541,683 | Oct 18, 2023 |
| HATSOPOULOS JOHN | — | Purchase | 50,000 | $0.80 | $40,000 | 589,385 | Oct 17, 2023 |