NYSE · CIK 0001537435
TGEN TECOGEN INC.
Insider trading from SEC Form 4. Last filing 34 d ago. Close $2.42 on Oct 9, 2026, +21% from the 52-week low and -80% from the high.
Last 90 days
Net insider value
$0
no open-market trades
Buys
0
$0 by 0 insiders
Sells
0
$0 by 0 insiders
Insiders on file
8
with a Form 4 at this company
Price and insider trades, last year
TGENOct 9, 2026 · close 2.42
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
Open-market buys and sells at TECOGEN INC., scored.
| Score | Insider | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 31Weak | Stephen Lafaille VP of Business Development buy | $1,000 400 shares | - | +180% from low-32% from high | |
| 50Moderate | Stephen Lafaille VP of Business Development sell | $346k 60,000 shares | -577% | +501% from low-2% from high | |
| 10Weak | Earl R Lewis director buy | $1,600 2,000 shares | +0% | - | |
| 26Weak | Earl R Lewis director buy | $71k 100,000 shares | +16% | - |
Transactions
The last 32 rows filed, every code.
| Date | Insider | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Jun 26, 2026 | Stephen Lafaille VP of Business Development | AGrant or award Common Stock | +29,013 | $0.00 | $0 | 41,389 | 34 d ago |
| Jun 26, 2026 | Robert A Panora COO and President | AGrant or award Common Stock | +9,671 | $0.00 | $0 | 72,194 | 34 d ago |
| Jun 26, 2026 | Abinand Rangesh Chief Executive Officer | AGrant or award Common Stock | +174,081 | $0.00 | $0 | 241,274 | 34 d ago |
| Jun 26, 2026 | John Kimball Whiting IV General Counsel & Secretary | AGrant or award Common Stock | +19,342 | $0.00 | $0 | 41,954 | 34 d ago |
| Jun 26, 2026 | Roger P. Deschenes Chief Financial Officer | AGrant or award Common Stock | +29,013 | $0.00 | $0 | 81,975 | 34 d ago |
| Jul 24, 2025 | John M Albertine director | AGrant or award Stock Option (Right to Buy)derivative | +25,000 | $8.35 | $209k | 175,000 | Jul 28, 2025 |
| Jul 24, 2025 | Roger P. Deschenes CAO | AGrant or award Common Stock | +17,964 | $0.00 | $0 | 42,962 | Jul 28, 2025 |
| Jul 24, 2025 | Angelina Galiteva director | AGrant or award Stock Option (Right to Buy)derivative | +25,000 | $8.35 | $209k | 225,000 | Jul 28, 2025 |
| Jul 24, 2025 | Roger P. Deschenes CAO | AGrant or award Stock Option (Right to Buy)derivative | +12,063 | $8.35 | $101k | 152,063 | Jul 28, 2025 |
| Mar 3, 2025 | Stephen Lafaille VP of Business Development | POpen-market purchase Common Stock | +400 | $2.50 | $1,000 | 400 | Jun 24, 2025 |
| Jun 3, 2025 | Stephen Lafaille VP of Business Development | XIn-the-money exercise Common Stock | +10,000 | $0.71 | $7,100 | 10,400 | Jun 24, 2025 |
| Jun 3, 2025 | Stephen Lafaille VP of Business Development | SOpen-market sale Common Stock | -10,000 | $4.88 | $49k | 400 | Jun 24, 2025 |
| Jun 4, 2025 | Stephen Lafaille VP of Business Development | XIn-the-money exercise Common Stock | +15,000 | $0.71 | $11k | 15,400 | Jun 24, 2025 |
| Jun 4, 2025 | Stephen Lafaille VP of Business Development | SOpen-market sale Common Stock | -15,000 | $5.00 | $75k | 400 | Jun 24, 2025 |
| Jun 6, 2025 | Stephen Lafaille VP of Business Development | XIn-the-money exercise Common Stock | +25,000 | $1.10 | $28k | 25,400 | Jun 24, 2025 |
| Jun 6, 2025 | Stephen Lafaille VP of Business Development | SOpen-market sale Common Stock | -25,000 | $5.98 | $150k | 400 | Jun 24, 2025 |
| Jun 23, 2025 | Stephen Lafaille VP of Business Development | XIn-the-money exercise Common Stock | +10,000 | $1.10 | $11k | 10,400 | Jun 24, 2025 |
| Jun 23, 2025 | Stephen Lafaille VP of Business Development | SOpen-market sale Common Stock | -10,000 | $7.25 | $73k | 400 | Jun 24, 2025 |
| Jun 3, 2025 | Stephen Lafaille VP of Business Development | XIn-the-money exercise Stock Options (Right to Buy)derivative | -10,000 | $0.71 | $7,100 | 40,000 | Jun 24, 2025 |
| Jun 4, 2025 | Stephen Lafaille VP of Business Development | XIn-the-money exercise Stock Options (Right to Buy)derivative | -15,000 | $0.71 | $11k | 25,000 | Jun 24, 2025 |
| Jun 6, 2025 | Stephen Lafaille VP of Business Development | XIn-the-money exercise Stock Options (Right to Buy)derivative | -25,000 | $1.10 | $28k | 27,500 | Jun 24, 2025 |
| Jun 23, 2025 | Stephen Lafaille VP of Business Development | XIn-the-money exercise Stock Options (Right to Buy)derivative | -10,000 | $1.10 | $11k | 17,500 | Jun 24, 2025 |
| Jun 16, 2025 | Robert A Panora COO and President | XIn-the-money exercise Common Stock | +12,723 | $0.79 | $10k | 82,723 | Jun 20, 2025 |
| Jun 16, 2025 | Robert A Panora COO and President | XIn-the-money exercise Common Stock | +30,000 | $0.71 | $21k | 112,723 | Jun 20, 2025 |
| Jun 16, 2025 | Robert A Panora COO and President | XIn-the-money exercise Common Stock | +52,500 | $1.10 | $58k | 165,223 | Jun 20, 2025 |
| May 27, 2025 | Robert A Panora COO and President | XIn-the-money exercise Stock Option (Right to Buy)derivative | +70,000 | $0.71 | $50k | 130,000 | Jun 2, 2025 |
| May 6, 2025 | Earl R Lewis director | XIn-the-money exercise Common Stock | +15,000 | $1.75 | $26k | 982,256 | May 7, 2025 |
| May 6, 2025 | Earl R Lewis director | XIn-the-money exercise Common Stock | +12,500 | $1.20 | $15k | 994,756 | May 7, 2025 |
| May 6, 2025 | Earl R Lewis director | XIn-the-money exercise Common Stock | +6,250 | $1.10 | $6,875 | 1,001,006 | May 7, 2025 |
| May 1, 2025 | Earl R Lewis director | JOther Common Stock | +240,256 | $2.14 | $514k | 967,256 | May 5, 2025 |
| Nov 22, 2024 | Earl R Lewis director | POpen-market purchase Common Stock | +100,000 | $0.71 | $71k | 737,000 | Dec 6, 2024 |
| Oct 9, 2023 | Earl R Lewis director | POpen-market purchase Common Stock | +2,000 | $0.80 | $1,600 | 637,000 | Dec 6, 2024 |
Insiders
Everyone who has filed a Form 4 here.
- John M Albertinedirector
- Roger P. DeschenesCAO
- Angelina Galitevadirector
- Earl R Lewisdirector
- Stephen LafailleVP of Business Development
- Robert A PanoraCOO and President
- Abinand RangeshChief Executive Officer
- John Kimball Whiting IVGeneral Counsel & Secretary
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.