Tecogen
Builds natural-gas cogeneration, cooling, and energy systems with lifecycle service.
$3.14
After-hours close+0.01 (+0.32%)
At close$3.13(−1.26%)
Something off on this page? Send us feedback.
Breakdown13F · Form 4
Institutions 26.03%Insiders —
Shares outstanding 29.92M · Float 17.93M · 59.9% free float
Institutions13F, as of Mar 31, 2026
68 holders · 7.79M shares · 15 new positions · 33 increased · 17 reduced · 21 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| Vanguard Capital Management LLC | 770.0K | 2.57% | +770.0Knew | May 15, 2026 |
| Bard Associates Inc | 688.3K | 2.30% | −798 | May 8, 2026 |
| Clear Harbor Asset Management, LLC | 650.0K | 2.17% | +40.0K | May 5, 2026 |
| Portolan Capital Management, LLC | 443.6K | 1.48% | −2.3K | May 15, 2026 |
| Herald Investment Management Ltd | 420.0K | 1.40% | 0 | May 13, 2026 |
| Arosa Capital Management LP | 350.0K | 1.17% | 0 | May 15, 2026 |
| Palisades Investment Partners, LLC | 333.9K | 1.12% | −56.3K | Apr 30, 2026 |
| UBS Group AG | 319.8K | 1.07% | +214.9K | May 5, 2026 |
Beneficial owners13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| Portolan Capital Management, LLC | 5.19% | 1.55M | 13G | Jun 10, 2026 ↗ |
InsidersForm 4
Latest trades
Nothing filed in the last 12 months.
CongressHouse and Senate disclosures
Not reported.