TECOGEN INC. (TGEN) insider buying and selling
There were no open-market insider purchases or sales at TECOGEN INC. (TGEN) in the last 90 days. Over the last 12 months, 6 insiders bought $115K of the stock, led by Earl Lewis (Director), who bought $27K between Mar 26–27, 2026.
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Unlock TGENRecent open-market insider trades
Trades by the same insider within a week are shown as one line.
| Date | Insider | Type | Shares | Price | Value |
|---|---|---|---|---|---|
| Ahmed Ghoniem Director | Open market purchase | 12,723 | $0.79 | $10K | |
| Earl Lewis Director | Open market purchase 2 trades | 10,000 | avg. $2.70 | $27K | |
| Susan B Hirsch Director | Open market purchase | 10,000 | $2.54 | $25K | |
| John Kimball Whiting IV CLO | Open market purchase | 10,000 | $2.38 | $24K | |
| Roger P. Deschenes CAO | Open market purchase | 10,000 | $2.23 | $22K | |
| Abinand Rangesh CEO | Open market purchase | 3,000 | $2.30 | $7K |
What the TGEN insider trades really mean
The table above is the public summary. With an Insider Intel account you get the analysis behind it, for TECOGEN INC. and every other stock we track:
TGEN's AI Signal score
One score from six weighted factors, with the full breakdown behind it, so you can see whether the buying is a real signal.
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See each TGEN insider purchase and sale plotted on the chart, with the gain or loss on every one since.
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Is Earl Lewis worth following? See their grade, win rate and average return on past purchases.
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Questions about TGEN insider trading
Who bought TECOGEN INC. (TGEN) stock recently?
Insiders who bought TECOGEN INC. stock on the open market in the last 12 months: Earl Lewis ($27K), Susan B Hirsch ($25K), John Kimball Whiting IV ($24K), Roger P. Deschenes ($22K). The most recent purchase was reported on Apr 24, 2026.
Are insiders buying or selling TGEN?
Over the last 12 months insiders were net buyers of TGEN on discretionary trades: $115K bought against $0 sold (scheduled and tax-related sales excluded).
What is a sell-to-cover or 10b5-1 sale?
A 10b5-1 sale is scheduled in advance under a pre-arranged plan, and a sell-to-cover sale is made to pay tax on vesting shares. Neither is a fresh decision to sell, so they say less about an insider's view than a discretionary sale.
Where does this data come from?
Officers, directors and large shareholders report their trades to the SEC on Form 4. This page lists the open-market purchases and sales by individual insiders from those public filings; funds and other institutions are not shown.
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How to read this page
Officers, directors and large shareholders must report their trades in company shares to the SEC on Form 4. This page lists open-market purchases and sales by individual insiders: trades made on the stock exchange at the going price. Funds and other institutions are not shown here.
Information from SEC EDGAR Form 4 filings, shown for general information only. It is not financial advice and does not recommend buying or selling any security. Trades are shown by transaction date and may be reported up to two business days later.