Tecogen
TGEN · OTC
$2.13+$0.01 (+0.47%)TodayMarket closed ·
Prev close $2.12
Who owns TGEN
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 49.9% of TGEN’s shares.
- Pacheco (Ann Marie)12.4%
- George N. Hatsopoulos UEO9.2%
- Comeau (Joseph)7.6%
- Portolan Capital Management, L.L.C.5.2%
- Next 6 largest institutions15.6%
- All other shareholders50.1%
| Holder | Shares | % of shares |
|---|---|---|
| Pacheco (Ann Marie) | 3.70M | 12.37% |
| George N. Hatsopoulos UEO | 2.74M | 9.17% |
| Comeau (Joseph) | 2.26M | 7.56% |
| Portolan Capital Management, L.L.C. | 1.55M | 5.18% |
| Hatsopoulos (John N) | 1.07M | 3.58% |
| Lewis (Earl R) | 1.01M | 3.38% |
| Vanguard Capital Management, LLC | 788.67K | 2.64% |
| Bard Associates Inc. | 682.22K | 2.28% |
| Clear Harbor Asset Management, LLC | 650.00K | 2.17% |
| Natsis (Tryfon) | 460.30K | 1.54% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| Strategic Advisers US Total Stock Fund | 762.89K | 2.55% |
| Vanguard Total Stock Market Index Fund | 579.80K | 1.94% |
| Herald Investment Trust | 420.00K | 1.40% |
| Vanguard Extended Market Index Fund | 189.15K | 0.63% |
| MetaSpace Fund | 161.57K | 0.54% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders bought $10.00K (1 trade) of TGEN on the open market, with no sales.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Whiting John Kimball IV | Award | 19.34K | — |
| Panora Robert | Award | 9.67K | — |
| Lafaille Stephen | Award | 29.01K | — |
| Rangesh Abinand | Award | 174.08K | — |
| Deschenes Roger P. | Award | 29.01K | — |
| Ghoniem Ahmed | Option exercise | 12.72K | $10.00K |
| Ghoniem Ahmed | Buy | 12.72K | $10.00K |
Short interest
Settled Sep 30, 2026
- Shares short
- 1.16M
- Days to cover
- 7.78
- % of shares outstanding
- 3.87%
- Average daily volume
- 148.92K
- Change since last report
- +5.0%
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