TGEN
Tecogen Inc.$4.06-0.18 (-4.25%)Prev Close$4.24·MCap$87.2M·P/E—·Vol246.8K·Yield—
▲
Buys (12M)
7
$134.0K
▼
Sells (12M)
2
$137.2K
◆
Net Activity
Net Seller
$3.2K
●
Active Insiders
8
last 12 mo
Over the past 12 months, insider activity at Tecogen Inc. (TGEN) has been mixed between buying and selling, with 7 insider purchases totaling $134.0K and 2 insider sales totaling $137.2K. The most recent insider transaction was by Ghoniem Ahmed (director), who purchased $10.0K worth of shares on Apr 27, 2026. Tecogen Inc. operates in the Industrials sector, within the Electrical Equipment & Parts industry, with a market cap of $87.2M.
TGEN Insider Trading Activity
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Apr 27, 2026 | Ghoniem Ahmed | director | Buy | 12,723 | $0.79 | $10.0K | 12,723 |
| Apr 14, 2026 | Hirsch Susan B | director | Buy | 5,000 | $3.73 | $18.6K | 265,416 |
| Mar 27, 2026 | Hirsch Susan B | director | Buy | 10,000 | $2.54 | $25.4K | 260,416 |
| Mar 27, 2026 | Lewis Earl | director | Buy | 10,000 | $2.70 | $27.0K | 1,011,006 |
| Mar 23, 2026 | Deschenes Roger P. | officer: CAO | Buy | 10,000 | $2.23 | $22.3K | 52,962 |
| Mar 23, 2026 | Rangesh Abinand | director, officer, other: Chief Executive Officer | Buy | 3,000 | $2.30 | $6.9K | 67,193 |
| Mar 23, 2026 | Whiting John Kimball IV | officer: General Counsel & Secretary | Buy | 10,000 | $2.38 | $23.8K | 22,612+79% |
| Jun 16, 2025 | PANORA ROBERT A | COO and President | Sell | 95,223 | $0.94 | $89.1K | 0 |
| May 6, 2025 | LEWIS EARL R | Director | Sell | 33,750 | $1.43 | $48.1K | 0 |
| Mar 3, 2025 | Lafaille Stephen | VP of Business Development | Buy | 400 | $2.50 | $1.0K | 0 |
| Mar 3, 2025 | Lafaille Stephen | VP of Business Development | Sell | 120,000 | $3.35 | $402.1K | 0 |
| Dec 6, 2024 | LEWIS EARL R | Director | Buy | 102,000 | $0.71 | $72.6K | 737,000 |
| Sep 27, 2024 | HATSOPOULOS JOHN | Director | Buy | 10,000 | $0.84 | $8.4K | 988,951 |
| Sep 25, 2024 | HATSOPOULOS JOHN | Director | Buy | 10,000 | $0.86 | $8.6K | 978,951 |
| Aug 20, 2024 | HATSOPOULOS JOHN | Director | Buy | 10,000 | $0.90 | $8.9K | 968,951 |
| Jul 17, 2024 | LEWIS EARL R | Director | Buy | 10,000 | $0.68 | $6.8K | 635,000 |
| Jul 12, 2024 | HATSOPOULOS JOHN | Director | Buy | 22,466 | $0.65 | $14.6K | 958,951 |
| May 29, 2024 | HATSOPOULOS JOHN | Director | Buy | 11,265 | $0.80 | $9.0K | 936,485 |
| May 28, 2024 | HATSOPOULOS JOHN | Director | Buy | 11,935 | $0.80 | $9.5K | 925,220 |
| May 22, 2024 | HATSOPOULOS JOHN | Director | Buy | 13,800 | $0.79 | $10.9K | 913,285 |
| May 17, 2024 | HATSOPOULOS JOHN | Director | Buy | 3,000 | $0.75 | $2.2K | 899,485 |
| May 16, 2024 | HATSOPOULOS JOHN | Director | Buy | 10,000 | $0.74 | $7.4K | 896,485 |
| May 3, 2024 | LEWIS EARL R | Director | Buy | 5,000 | $0.75 | $3.8K | 615,000 |
| Apr 24, 2024 | HATSOPOULOS JOHN | Director | Buy | 5,000 | $0.67 | $3.4K | 886,485 |
| Apr 24, 2024 | LEWIS EARL R | Director | Buy | 10,000 | $0.68 | $6.8K | 610,000 |
| Apr 23, 2024 | HATSOPOULOS JOHN | Director | Buy | 6,000 | $0.68 | $4.1K | 881,485 |
| Apr 16, 2024 | HATSOPOULOS JOHN | Director | Buy | 2,000 | $0.69 | $1.4K | 875,485 |
| Apr 12, 2024 | HATSOPOULOS JOHN | Director | Buy | 1,000 | $0.70 | $699.70 | 873,485 |
| Apr 11, 2024 | HATSOPOULOS JOHN | Director | Buy | 1,000 | $0.70 | $700.00 | 872,485 |
| Apr 9, 2024 | HATSOPOULOS JOHN | Director | Buy | 1,000 | $0.70 | $700.00 | 871,485 |
| Apr 8, 2024 | HATSOPOULOS JOHN | Director | Buy | 1,000 | $0.70 | $700.00 | 870,485 |
| Apr 2, 2024 | HATSOPOULOS JOHN | Director | Buy | 10,000 | $0.70 | $7.0K | 869,485 |
| Jan 25, 2024 | LEWIS EARL R | Director | Buy | 9,152 | $0.78 | $7.1K | 560,835 |
| Jan 23, 2024 | HATSOPOULOS JOHN | Director | Buy | 10,000 | $0.77 | $7.7K | 859,485 |
| Jan 23, 2024 | LEWIS EARL R | Director | Buy | 10,000 | $0.68 | $6.8K | 551,683 |
| Jan 19, 2024 | HATSOPOULOS JOHN | Director | Buy | 10,000 | $0.73 | $7.3K | 849,485 |
| Jan 16, 2024 | HATSOPOULOS JOHN | Director | Buy | 100,000 | $0.73 | $73.5K | 839,485 |
| Dec 28, 2023 | HATSOPOULOS JOHN | Director | Buy | 25,000 | $0.80 | $20.0K | 739,485 |
| Dec 26, 2023 | HATSOPOULOS JOHN | Director | Buy | 25,000 | $0.80 | $20.0K | 714,485 |
| Dec 15, 2023 | HATSOPOULOS JOHN | Director | Buy | 50,000 | $0.89 | $44.7K | 689,485 |
| Nov 21, 2023 | HATSOPOULOS JOHN | Director | Buy | 4,000 | $0.85 | $3.4K | 639,485 |
| Nov 17, 2023 | HATSOPOULOS JOHN | Director | Buy | 46,100 | $0.85 | $39.0K | 635,485 |
| Oct 20, 2023 | Hirsch Susan B | Director | Buy | 5,000 | $0.92 | $4.6K | 250,416 |
| Oct 18, 2023 | LEWIS EARL R | Director | Buy | 25,000 | $0.91 | $22.8K | 541,683 |
| Oct 17, 2023 | HATSOPOULOS JOHN | Director | Buy | 50,000 | $0.80 | $40.0K | 589,385 |
| Oct 13, 2023 | HATSOPOULOS JOHN | Director | Buy | 50,000 | $0.80 | $40.0K | 539,385 |
| Oct 2, 2023 | HATSOPOULOS JOHN | Director | Buy | 2,000 | $0.98 | $2.0K | 489,385 |
| Sep 28, 2023 | HATSOPOULOS JOHN | Director | Buy | 1,380 | $0.91 | $1.3K | 487,385 |
| Sep 27, 2023 | HATSOPOULOS JOHN | Director | Buy | 2,000 | $0.92 | $1.8K | 486,005 |
| Sep 19, 2023 | HATSOPOULOS JOHN | Director | Buy | 5,000 | $0.91 | $4.5K | 484,005 |
Showing 1–50 of 89
1 / 2
TGEN Insider Buying Activity
The following table shows recent insider purchases of Tecogen Inc. (TGEN) stock reported via SEC Form 4 filings.
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Apr 27, 2026 | Ghoniem Ahmed | director | Buy | 12,723 | $0.79 | $10.0K | 12,723 |
| Apr 14, 2026 | Hirsch Susan B | director | Buy | 5,000 | $3.73 | $18.6K | 265,416 |
| Mar 27, 2026 | Hirsch Susan B | director | Buy | 10,000 | $2.54 | $25.4K | 260,416 |
| Mar 27, 2026 | Lewis Earl | director | Buy | 10,000 | $2.70 | $27.0K | 1,011,006 |
| Mar 23, 2026 | Deschenes Roger P. | officer: CAO | Buy | 10,000 | $2.23 | $22.3K | 52,962 |
| Mar 23, 2026 | Rangesh Abinand | director, officer, other: Chief Executive Officer | Buy | 3,000 | $2.30 | $6.9K | 67,193 |
| Mar 23, 2026 | Whiting John Kimball IV | officer: General Counsel & Secretary | Buy | 10,000 | $2.38 | $23.8K | 22,612+79% |
| Mar 3, 2025 | Lafaille Stephen | VP of Business Development | Buy | 400 | $2.50 | $1.0K | 0 |
| Dec 6, 2024 | LEWIS EARL R | Director | Buy | 102,000 | $0.71 | $72.6K | 737,000 |
| Sep 27, 2024 | HATSOPOULOS JOHN | Director | Buy | 10,000 | $0.84 | $8.4K | 988,951 |
| Sep 25, 2024 | HATSOPOULOS JOHN | Director | Buy | 10,000 | $0.86 | $8.6K | 978,951 |
| Aug 20, 2024 | HATSOPOULOS JOHN | Director | Buy | 10,000 | $0.90 | $8.9K | 968,951 |
| Jul 17, 2024 | LEWIS EARL R | Director | Buy | 10,000 | $0.68 | $6.8K | 635,000 |
| Jul 12, 2024 | HATSOPOULOS JOHN | Director | Buy | 22,466 | $0.65 | $14.6K | 958,951 |
| May 29, 2024 | HATSOPOULOS JOHN | Director | Buy | 11,265 | $0.80 | $9.0K | 936,485 |
| May 28, 2024 | HATSOPOULOS JOHN | Director | Buy | 11,935 | $0.80 | $9.5K | 925,220 |
| May 22, 2024 | HATSOPOULOS JOHN | Director | Buy | 13,800 | $0.79 | $10.9K | 913,285 |
| May 17, 2024 | HATSOPOULOS JOHN | Director | Buy | 3,000 | $0.75 | $2.2K | 899,485 |
| May 16, 2024 | HATSOPOULOS JOHN | Director | Buy | 10,000 | $0.74 | $7.4K | 896,485 |
| May 3, 2024 | LEWIS EARL R | Director | Buy | 5,000 | $0.75 | $3.8K | 615,000 |
| Apr 24, 2024 | HATSOPOULOS JOHN | Director | Buy | 5,000 | $0.67 | $3.4K | 886,485 |
| Apr 24, 2024 | LEWIS EARL R | Director | Buy | 10,000 | $0.68 | $6.8K | 610,000 |
| Apr 23, 2024 | HATSOPOULOS JOHN | Director | Buy | 6,000 | $0.68 | $4.1K | 881,485 |
| Apr 16, 2024 | HATSOPOULOS JOHN | Director | Buy | 2,000 | $0.69 | $1.4K | 875,485 |
| Apr 12, 2024 | HATSOPOULOS JOHN | Director | Buy | 1,000 | $0.70 | $699.70 | 873,485 |
| Apr 11, 2024 | HATSOPOULOS JOHN | Director | Buy | 1,000 | $0.70 | $700.00 | 872,485 |
| Apr 9, 2024 | HATSOPOULOS JOHN | Director | Buy | 1,000 | $0.70 | $700.00 | 871,485 |
| Apr 8, 2024 | HATSOPOULOS JOHN | Director | Buy | 1,000 | $0.70 | $700.00 | 870,485 |
| Apr 2, 2024 | HATSOPOULOS JOHN | Director | Buy | 10,000 | $0.70 | $7.0K | 869,485 |
| Jan 25, 2024 | LEWIS EARL R | Director | Buy | 9,152 | $0.78 | $7.1K | 560,835 |
| Jan 23, 2024 | HATSOPOULOS JOHN | Director | Buy | 10,000 | $0.77 | $7.7K | 859,485 |
| Jan 23, 2024 | LEWIS EARL R | Director | Buy | 10,000 | $0.68 | $6.8K | 551,683 |
| Jan 19, 2024 | HATSOPOULOS JOHN | Director | Buy | 10,000 | $0.73 | $7.3K | 849,485 |
| Jan 16, 2024 | HATSOPOULOS JOHN | Director | Buy | 100,000 | $0.73 | $73.5K | 839,485 |
| Dec 28, 2023 | HATSOPOULOS JOHN | Director | Buy | 25,000 | $0.80 | $20.0K | 739,485 |
| Dec 26, 2023 | HATSOPOULOS JOHN | Director | Buy | 25,000 | $0.80 | $20.0K | 714,485 |
| Dec 15, 2023 | HATSOPOULOS JOHN | Director | Buy | 50,000 | $0.89 | $44.7K | 689,485 |
| Nov 21, 2023 | HATSOPOULOS JOHN | Director | Buy | 4,000 | $0.85 | $3.4K | 639,485 |
| Nov 17, 2023 | HATSOPOULOS JOHN | Director | Buy | 46,100 | $0.85 | $39.0K | 635,485 |
| Oct 20, 2023 | Hirsch Susan B | Director | Buy | 5,000 | $0.92 | $4.6K | 250,416 |
| Oct 18, 2023 | LEWIS EARL R | Director | Buy | 25,000 | $0.91 | $22.8K | 541,683 |
| Oct 17, 2023 | HATSOPOULOS JOHN | Director | Buy | 50,000 | $0.80 | $40.0K | 589,385 |
| Oct 13, 2023 | HATSOPOULOS JOHN | Director | Buy | 50,000 | $0.80 | $40.0K | 539,385 |
| Oct 2, 2023 | HATSOPOULOS JOHN | Director | Buy | 2,000 | $0.98 | $2.0K | 489,385 |
| Sep 28, 2023 | HATSOPOULOS JOHN | Director | Buy | 1,380 | $0.91 | $1.3K | 487,385 |
| Sep 27, 2023 | HATSOPOULOS JOHN | Director | Buy | 2,000 | $0.92 | $1.8K | 486,005 |
| Sep 19, 2023 | HATSOPOULOS JOHN | Director | Buy | 5,000 | $0.91 | $4.5K | 484,005 |
TGEN Insider Selling Activity
The following table shows recent insider sales of Tecogen Inc. (TGEN) stock reported via SEC Form 4 filings.
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Jun 16, 2025 | PANORA ROBERT A | COO and President | Sell | 95,223 | $0.94 | $89.1K | 0 |
| May 6, 2025 | LEWIS EARL R | Director | Sell | 33,750 | $1.43 | $48.1K | 0 |
| Mar 3, 2025 | Lafaille Stephen | VP of Business Development | Sell | 120,000 | $3.35 | $402.1K | 0 |
TGEN Insiders
Rangesh Abinand
director, officer, other: Chief Executive Officer
Bought $11.1K
4 tradesLast: Mar 23, 2026
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