TGEN insider buying
2 cluster buysTECOGEN INC. · Industrials
When two or more insiders at TECOGEN INC. buy TGEN on the open market around the same time, that clustered conviction is one of the highest-signal patterns in SEC filing data. Below is every cluster we've detected in TGEN plus the full record of qualifying open-market buys, each parsed directly from Form 4 filings and linked back to the source on SEC EDGAR.
Detected clusters
- Mar 20 – Mar 27, 2026Detected Mar 27, 2026High conviction5 insidersTotal bought$105.4KMarket cap$130.4M
- Mar 27 – Nov 22, 2024Detected Nov 22, 20242 insidersTotal bought$193.5KMarket cap$130.4M
All notable open-market buys in TGEN
Every open-market Form 4 purchase, newest first. Click an insider to see their full buying record across companies.
| Date | Insider | Shares | Price | Value | Filing |
|---|---|---|---|---|---|
| Mar 27, 2026 | Hirsch Susan Bcluster Director | 10,000 | $2.54 | $25.4K | SEC ↗ |
| Mar 27, 2026 | Lewis Earlcluster Director | 5,000 | $2.52 | $12.6K | SEC ↗ |
| Mar 26, 2026 | Lewis Earlcluster Director | 5,000 | $2.88 | $14.4K | SEC ↗ |
| Mar 23, 2026 | Whiting John Kimball IVcluster General Counsel & Secretary | 10,000 | $2.38 | $23.8K | SEC ↗ |
| Mar 20, 2026 | Deschenes Roger P.cluster CAO | 10,000 | $2.23 | $22.3K | SEC ↗ |
| Mar 20, 2026 | Rangesh Abinandcluster Director, Chief Executive Officer, Chief Financial Officer | 3,000 | $2.30 | $6.9K | SEC ↗ |
| Mar 3, 2025 | VP of Business Development | 400 | $2.50 | $1.0K | SEC ↗ |
| Nov 22, 2024 | LEWIS EARL Rcluster Director | 100,000 | $0.71 | $71.0K | SEC ↗ |
| Sep 27, 2024 | HATSOPOULOS JOHNcluster Director | 10,000 | $0.84 | $8.4K | SEC ↗ |
| Sep 25, 2024 | HATSOPOULOS JOHNcluster Director | 10,000 | $0.86 | $8.6K | SEC ↗ |
| Aug 19, 2024 | HATSOPOULOS JOHNcluster Director | 10,000 | $0.90 | $9.0K | SEC ↗ |
| Jul 15, 2024 | LEWIS EARL Rcluster Director | 10,000 | $0.68 | $6.8K | SEC ↗ |
| Jul 15, 2024 | LEWIS EARL Rcluster Director | 10,000 | $0.68 | $6.8K | SEC ↗ |
| Jul 10, 2024 | HATSOPOULOS JOHNcluster Director | 22,466 | $0.65 | $14.6K | SEC ↗ |
| May 29, 2024 | HATSOPOULOS JOHNcluster Director | 10,000 | $0.80 | $8.0K | SEC ↗ |
| May 28, 2024 | HATSOPOULOS JOHNcluster Director | 1,265 | $0.80 | $1.0K | SEC ↗ |
| May 24, 2024 | HATSOPOULOS JOHNcluster Director | 8,735 | $0.80 | $7.0K | SEC ↗ |
| May 22, 2024 | HATSOPOULOS JOHNcluster Director | 3,200 | $0.79 | $2.5K | SEC ↗ |
| May 21, 2024 | HATSOPOULOS JOHNcluster Director | 13,800 | $0.79 | $10.9K | SEC ↗ |
| May 16, 2024 | HATSOPOULOS JOHNcluster Director | 3,000 | $0.75 | $2.3K | SEC ↗ |
| May 15, 2024 | HATSOPOULOS JOHNcluster Director | 10,000 | $0.74 | $7.4K | SEC ↗ |
| May 1, 2024 | LEWIS EARL Rcluster Director | 5,000 | $0.75 | $3.8K | SEC ↗ |
| Apr 24, 2024 | LEWIS EARL Rcluster Director | 10,000 | $0.68 | $6.8K | SEC ↗ |
| Apr 24, 2024 | HATSOPOULOS JOHNcluster Director | 5,000 | $0.67 | $3.4K | SEC ↗ |
| Apr 23, 2024 | HATSOPOULOS JOHNcluster Director | 5,000 | $0.69 | $3.4K | SEC ↗ |
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TGEN insider buying — FAQ
- Are insiders buying TGEN stock?
- Yes — 7 distinct insiders have bought TGEN (TECOGEN INC.) on the open market, including 2 cluster buys where two or more insiders bought within a rolling window. The most recent qualifying activity was Mar 27, 2026.
- How much TGEN stock have insiders bought?
- Insiders have bought a combined $301.5K of TGEN across 37 open-market purchases, based on SEC Form 4 filings.
- What is an insider cluster buy in TGEN?
- A cluster buy is two or more distinct TECOGEN INC. insiders — officers, directors, or 10% owners — each buying TGEN on the open market within a rolling window. TGEN has 2 detected cluster buys to date.
- Where does this TGEN insider trading data come from?
- Every figure is parsed directly from SEC Form 4 filings on EDGAR, and each purchase on this page links back to its original filing document.
How we track insider buying in TGEN
We continuously poll SEC EDGAR for new Form 4 filings and parse every open-market purchase (transaction code P). A cluster is recorded when two or more distinct insiders — officers, directors, or 10% owners — each buy TGEN within a rolling window. We track clusters at every company size, from micro-caps to mega-caps. Every figure on this page traces back to an official filing; open any row to jump straight to the source document. What counts as a cluster buy?
This page is informational and reflects public filing data. It is not investment advice or a recommendation regarding TGEN.