// company-profile
Tecogen Inc.
TGENExchangeNYSESectorAir-Cond & Warm Air Heatg Equip & Comm & Indl Refrig EquipInc.DEFilings107Insiders12
// api This Tecogen Inc. insider-trading data is served live by the Form4API insider trading API. Get the same data via API.
// activity-summary
No insider transactions in the last 30 days.
// 90-day insight
Over the last 90 days, Tecogen Inc. insiders bought $91K across 6 transactions with no open-market sales.
- Most active insider: Hirsch Susan B with 2 transactions totaling $44K.
- Largest single purchase: $25K by Hirsch Susan B on Mar 27, 2026.
Activity skews bullish — buys outpace sales.
Institutional Ownership
Top 13F-HR holders of Tecogen Inc. as of 2026-03-31
Total reported AUM
$20.6M
QoQ change
-47.8%
Reporting period
2026-03-31
#1
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
$2.0M
770K shares
#2
BARD ASSOCIATES INC
CIK 1105907
$1.8M
688K shares
#3
Clear Harbor Asset Management, LLC
CIK 1511857
$1.7M
650K shares
Data source: SEC Form 13F-HR filings. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Apr 24, 2026 | GHONIEM AHMED | TGEN | Option Exercise | 12,723 | $0.79 | $10K |
| Apr 24, 2026 | GHONIEM AHMED | TGEN | Purchase | 12,723 | $0.79 | $10K |
| Apr 13, 2026 | Hirsch Susan B | TGEN | Purchase | 5,000 | $3.73 | $19K |
| Mar 27, 2026 | LEWIS EARL R | TGEN | Purchase | 5,000 | $2.52 | $13K |
| Mar 27, 2026 | Hirsch Susan B | TGEN | Purchase | 10,000 | $2.54 | $25K |
45 more transactions hidden
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