Tecogen Inc. · AMEX:TGEN
Tecogen Inc. shareholders
As of Jun 30, 2026, 66 institutions reported holding Tecogen Inc., 31.4% of its shares. Largest: Portolan Capital Management, LLC, Vanguard and Bard Associates Inc. New holders, exits, insiders and big stakes, each with its filing.
| Holder | Shares | % of Tecogen Inc. | Change | Filed |
|---|---|---|---|---|
| Portolan Capital Management, LLC | 1.55M | 5.1% | +1.11M | Aug 14, 2026 |
| Vanguard | 900K | 3.0% | +28,220 | Aug 13, 2026 |
| Bard Associates Inc | 682K | 2.3% | −6,088 | Aug 12, 2026 |
| Clear Harbor Asset Management, LLC | 650K | 2.2% | no change | Aug 12, 2026 |
| HERALD INVESTMENT MANAGEMENT Ltd | 420K | 1.4% | no change | Jul 23, 2026 |
| Gratia Capital, LLC | 389K | 1.3% | new | Aug 14, 2026 |
| UBS | 365K | 1.2% | +43,213 | Aug 13, 2026 |
| Meros Investment Management, LP | 353K | 1.2% | +61,782 | Aug 14, 2026 |
| Palisades Investment Partners, LLC | 323K | 1.1% | −10,817 | Aug 4, 2026 |
| Susquehanna | 316K | 1.0% | +206K | Aug 14, 2026 |