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TECOGEN INC. Insider Trading Activity
Every SEC Form 4 insider transaction reported for TECOGEN INC. (TGEN), sourced directly from SEC EDGAR and updated as new filings are accepted.
By Trabud Research Team · SEC Form 4 & insider trading data analysts
Last updated:
Quick Answer
Are TGEN insiders buying or selling?
TECOGEN INC. insiders reported 100 open-market buys ($1.1M) and 2 sells ($895.6K) across 102 Form 4 filings — a net buying position of $202.6K.
Source: SEC EDGAR Form 4
Key Statistics (as of Apr 27, 2026)
Total Form 4 filings
102
SEC EDGAR
Insider filers
10
Insider buys (100)
$1.1M
Insider sells (2)
$895.6K
Insider sentiment
Net buyingNet insider flow of $202.6K in net buying. 1 insider buy in the last 90 days.
Recent TGEN insider transactions
| Date | Insider | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Apr 27, 2026 | Ahmed Ghoniem | Director | Purchase | 12.7K | $0.79 | $10.0K |
| Apr 14, 2026 | Susan B Hirsch | Director | Purchase | 5.0K | $3.73 | $18.6K |
| Mar 27, 2026 | Susan B Hirsch | Director | Purchase | 10.0K | $2.54 | $25.4K |
| Mar 27, 2026 | Earl Lewis | Director | Purchase | 5.0K | $2.52 | $12.6K |
| Mar 27, 2026 | Earl Lewis | Director | Purchase | 5.0K | $2.88 | $14.4K |
| Mar 23, 2026 | John Kimball IV Whiting | General Counsel & Secretary | Purchase | 10.0K | $2.38 | $23.8K |
| Mar 23, 2026 | Roger P. Deschenes | CAO | Purchase | 10.0K | $2.23 | $22.3K |
| Mar 23, 2026 | Abinand Rangesh | Chief Executive Officer | Purchase | 3.0K | $2.30 | $6.9K |
| Jul 14, 2025 | Robert A Panora | COO and President | Sale | 102.7K | $5.36 | $550.8K |
| Jun 24, 2025 | Stephen Lafaille | VP of Business Development | Sale | 59.6K | $5.79 | $344.8K |
| Mar 25, 2025 | Earl Lewis | Director | Purchase | 2.0K | $0.80 | $1.6K |
| Mar 25, 2025 | Earl Lewis | Director | Purchase | 10.0K | $0.68 | $6.8K |
| Dec 6, 2024 | Earl Lewis | Director | Purchase | 100.0K | $0.71 | $71.0K |
| Dec 6, 2024 | Earl Lewis | Director | Purchase | 2.0K | $0.80 | $1.6K |
| Sep 27, 2024 | John Hatsopoulos | Director | Purchase | 10.0K | $0.84 | $8.4K |
| Sep 25, 2024 | John Hatsopoulos | Director | Purchase | 10.0K | $0.86 | $8.6K |
| Aug 20, 2024 | John Hatsopoulos | Director | Purchase | 10.0K | $0.90 | $8.9K |
| Jul 17, 2024 | Earl Lewis | Director | Purchase | 10.0K | $0.68 | $6.8K |
| Jul 15, 2024 | Earl Lewis | Director | Purchase | 10.0K | $0.68 | $6.8K |
| Jul 12, 2024 | John Hatsopoulos | Director | Purchase | 22.5K | $0.65 | $14.6K |
| May 29, 2024 | John Hatsopoulos | Director | Purchase | 1.3K | $0.80 | $1.0K |
| May 29, 2024 | John Hatsopoulos | Director | Purchase | 10.0K | $0.80 | $8.0K |
| May 28, 2024 | John Hatsopoulos | Director | Purchase | 11.9K | $0.80 | $9.5K |
| May 22, 2024 | John Hatsopoulos | Director | Purchase | 13.8K | $0.79 | $10.9K |
| May 17, 2024 | John Hatsopoulos | Director | Purchase | 3.0K | $0.75 | $2.2K |
Showing the 25 most recent of 102 Form 4 filings for TECOGEN INC..
Most active TGEN insiders
- John Hatsopoulos64 filings
- Earl Lewis25 filings
- Abinand Rangesh4 filings
- Susan B Hirsch3 filings
- Ahmed Ghoniem1 filing
Ask anything about TGEN insider activity
Use Trabud's AI agent to query TECOGEN INC.'s Form 4 history in plain English — "Show me TGEN CEO purchases this year" or compare it against any other ticker.
Open the AI agentTGEN insider trading FAQ
Are TECOGEN INC. insiders buying or selling?
Across 102 SEC Form 4 filings, TECOGEN INC. (TGEN) insiders reported 100 open-market purchases totaling $1.1M and 2 sales totaling $895.6K. That is a net buying position of $202.6K.
How many insiders trade TGEN stock?
10 distinct insider filers — officers, directors, 10%+ owners, and investment groups filing jointly — have reported Form 4 transactions for TECOGEN INC.. The most recent filing was accepted on Apr 27, 2026.
Where does Trabud get TGEN insider trading data?
All TGEN insider trading data comes directly from official SEC EDGAR Form 4 filings, which corporate insiders must submit within two business days of a transaction under Section 16(a) of the Securities Exchange Act of 1934.
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