The following table details the insider trading activities
(stock purchases, stock sales, and stock option exercises) of Lafaille Stephen since 2025.
This trader's CIK number is 2074096.
At the time of last reporting, Lafaille Stephen was the VP of Business Development of Tecogen Inc.. (stock ticker symbol TGEN).
Also see all insider trading activities at Tecogen Inc..
| Insider Buying | Insider Sales | Option Exercises | |||||
|---|---|---|---|---|---|---|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
| 2025 | TGEN | 400 | $1,000 | 60,000 | $345,800 | 0 | $0 |
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2025-06-23 | TGEN | Sale | 10,000 | 7.25 | 72,500 |
| 2025-06-06 | TGEN | Sale | 25,000 | 5.98 | 149,500 |
| 2025-06-04 | TGEN | Sale | 15,000 | 5.00 | 75,000 |
| 2025-06-03 | TGEN | Sale | 10,000 | 4.88 | 48,800 |
| 2025-03-03 | TGEN | Buy | 400 | 2.50 | 1,000 |
Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by Lafaille Stephen (VP of Business Development of Tecogen Inc. at the time of this reporting) see the Securities and Exchange Commission (SEC) website.