TGEN
insider transactionsTECOGEN INC. — buys & sells by directors, officers and 10% owners A shareholder owning more than 10% of the company. Must report trades, but usually a weaker signal than an officer or director. (SEC Form 4).
Cluster buy signal: Multiple insiders at the same company buying around the same time — often a stronger signal than a single buy. 6 different insiders made open-market purchases in the last 365 days, totalling $134.0K.
Net shares · 365d
+60.7K
60.7K buy · 0 sell
Net value · 365d
$134.0K
$134.0K in · $0 out
Sentiment · 365d
Net buying
100% buying · 0% selling
Open-market trades · 365d
8
60.7K buy · 0 sell
Net buy / sell volume
Not enough data to chart yet.
Tap or hover the chart for daily net volume. Green = net buying, red = net selling.
All transactions
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Exercise·M
Director
$10.0K
12.7K sh · $0.79
Own New
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Buy·P
Director
$10.0K
12.7K sh · $0.79
Own New
-
Buy·P
Director
$18.6K
5.0K sh · $3.73
Own +2%
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Buy·P
Director
$12.6K
5.0K sh · $2.52
Own +0%
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Buy·P
Director
$25.4K
10.0K sh · $2.54
Own +4%
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Buy·P
Director
$14.4K
5.0K sh · $2.88
Own +0%
-
Buy·P
General Counsel & Secretary
$23.8K
10.0K sh · $2.38
Own +79%
-
Buy·P
Abinand Rangesh KEY
Chief Executive Officer
$6.9K
3.0K sh · $2.30
Own +5%
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Exercise·M
Director
$44.0K
50.0K sh · $0.88
Own New
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Exercise·M
Director
$44.0K
50.0K sh · $0.88
Own +5%
-
Buy·P
$22.3K
10.0K sh · $2.23
Own +23%
| Date▾ | Insider | Type | Shares | Value |
|---|---|---|---|---|
| Apr 24, 2026 | Ahmed Ghoniem | Exercise M | 12.7K | $10.0K |
| Apr 24, 2026 | Ahmed Ghoniem | Buy P | 12.7K | $10.0K |
| Apr 13, 2026 | Susan B Hirsch | Buy P | 5.0K | $18.6K |
| Mar 27, 2026 | Earl Lewis | Buy P | 5.0K | $12.6K |
| Mar 27, 2026 | Susan B Hirsch | Buy P | 10.0K | $25.4K |
| Mar 26, 2026 | Earl Lewis | Buy P | 5.0K | $14.4K |
| Mar 23, 2026 | John Kimball Whiting IV | Buy P | 10.0K | $23.8K |
| Mar 20, 2026 | Abinand Rangesh KEY | Buy P | 3.0K | $6.9K |
| Mar 20, 2026 | John Hatsopoulos | Exercise M | 50.0K | $44.0K |
| Mar 20, 2026 | John Hatsopoulos | Exercise M | 50.0K | $44.0K |
| Mar 20, 2026 | Roger P. Deschenes | Buy P | 10.0K | $22.3K |
About TGEN insider trading
This page tracks insider transactions for TECOGEN INC. (TGEN) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.