Stephen Lafaille bought $1,000 of TGEN
VP of Business Development at TECOGEN INC.. 400 shares at an average of $2.50, traded Mar 3, 2025, filed Jun 24, 2025.
Score components
- +15RoleOfficer
- 0Trade size$1k at market
- +8Relative to holdingsFirst purchase: no shares before this trade
- +8Price context32% below the 52-week high
- 0ClusterNo other insider buying within 14 days
- 0Repeat buyingFirst buy in 90 days
- 0Track recordToo few past buys to judge (0 with prices)
What happened after comparable buys
Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.
Price around the trade, and since
From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™
Rows in this filing
Every transaction in Form 4 0001537435-25-000064, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Mar 3, 2025 | POpen-market purchase Common Stock | +400 | $2.50 | $1,000 | 400 | Jun 24, 2025 |
| Jun 3, 2025 | XIn-the-money exercise Common Stock | +10,000 | $0.71 | $7,100 | 10,400 | Jun 24, 2025 |
| Jun 3, 2025 | SOpen-market sale Common Stock | -10,000 | $4.88 | $49k | 400 | Jun 24, 2025 |
| Jun 4, 2025 | XIn-the-money exercise Common Stock | +15,000 | $0.71 | $11k | 15,400 | Jun 24, 2025 |
| Jun 4, 2025 | SOpen-market sale Common Stock | -15,000 | $5.00 | $75k | 400 | Jun 24, 2025 |
| Jun 6, 2025 | XIn-the-money exercise Common Stock | +25,000 | $1.10 | $28k | 25,400 | Jun 24, 2025 |
| Jun 6, 2025 | SOpen-market sale Common Stock | -25,000 | $5.98 | $150k | 400 | Jun 24, 2025 |
| Jun 23, 2025 | XIn-the-money exercise Common Stock | +10,000 | $1.10 | $11k | 10,400 | Jun 24, 2025 |
| Jun 23, 2025 | SOpen-market sale Common Stock | -10,000 | $7.25 | $73k | 400 | Jun 24, 2025 |
| Jun 3, 2025 | XIn-the-money exercise Stock Options (Right to Buy)derivative | -10,000 | $0.71 | $7,100 | 40,000 | Jun 24, 2025 |
| Jun 4, 2025 | XIn-the-money exercise Stock Options (Right to Buy)derivative | -15,000 | $0.71 | $11k | 25,000 | Jun 24, 2025 |
| Jun 6, 2025 | XIn-the-money exercise Stock Options (Right to Buy)derivative | -25,000 | $1.10 | $28k | 27,500 | Jun 24, 2025 |
| Jun 23, 2025 | XIn-the-money exercise Stock Options (Right to Buy)derivative | -10,000 | $1.10 | $11k | 17,500 | Jun 24, 2025 |
Related signals
Other insiders at TECOGEN INC. and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 50Moderate | TGENsell TECOGEN INC. | Stephen Lafaille VP of Business Development | $346k 60,000 shares | -577% | |
| 10Weak | TGENbuy TECOGEN INC. | Earl R Lewis director | $1,600 2,000 shares | +0% | |
| 26Weak | TGENbuy TECOGEN INC. | Earl R Lewis director | $71k 100,000 shares | +16% |
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.