Tecogen Inc.
TGEN- Exchange
- NYSE
- Industry
- Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip
- SEC CIK
- 0001537435
No open-market purchases or sales by Tecogen Inc. insiders were filed in the last 90 days; 69 institutions reported holding it in 13F filings for Q2 2026, worth $49.5M in total; no superinvestor holds it.
Key figures
- Market capClose on Nov 10, 2026
- $50.7M
- Insider buysOpen market, last 90 days
- 0
- Insider sellsOpen market, last 90 days
- 0
- 13F holdersQ2 2026, +7 vs. previous quarter
- 69
- 13F valueReported value at the end of Q2 2026
- $49.5M
- Superinvestors holdingAt the end of Q2 2026
- 0
Price chart
Financials
See financial statementsFrom SEC filings, in USD.
- Revenue, FY2025
- $27.1M
- +19.7% year over year
- Net income, FY2025
- -$8.25M
- No comparable prior period
- Free cash flow, FY2025
- -$10.3M
- −433.6% year over year
- Revenue, Q2 FY2026
- $5.75M
- −21.2% year over year
Revenue flow, FY2025
Green is profit; orange is costs, expenses and taxes. Percentages are shares of revenue.
Net loss for FY2025: $8.25M (30.5% of revenue).
Short interest
See short dataFrom FINRA, settlement date Oct 30, 2026.
- Short interest
- 1.08M
- Shares sold short
- Change
- −62.4K
- −5.5% vs. previous
- Days to cover
- 3.67
- At average daily volume
Superinvestors holding TGEN, Q2 2026
Go to the superinvestors tabNo superinvestor reported holding TGEN at the end of Q2 2026.
Latest insider trades
See all insider tradesOpen-market purchases and sales by Tecogen Inc. insiders from Form 4, newest first.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Apr 27, 2026 (view filing) | Apr 24 | 3 days | Ghoniem AhmedDirector | PPurchase | +12.7K | $0.79 | +$10.1K | New position12.7K after | |
| Apr 14, 2026 (view filing) | Apr 13 | 1 day | Hirsch Susan BDirector | PPurchase | +5.00K | $3.73 | +$18.6K | +1.9%265.4K after | |
| Mar 27, 2026 (view filing) | Mar 27 | Same day | Hirsch Susan BDirector | PPurchase | +10.0K | $2.54 | +$25.4K | +4.0%260.4K after | |
| Mar 27, 2026 (view filing) | Mar 26 | 1 day | Lewis Earl RDirector | PPurchase | +5.00K | $2.88 | +$14.4K | +0.5%1.01M after | |
| Mar 27, 2026 (view filing) | Mar 27 | Same day | Lewis Earl RDirector | PPurchase | +5.00K | $2.52 | +$12.6K | +0.5%1.01M after | |
| Mar 23, 2026 (view filing) | Mar 23 | Same day | Whiting John Kimball IVGeneral Counsel & Secretary | PPurchase | +10.0K | $2.38 | +$23.8K | +79.3%22.6K after | |
| Mar 23, 2026 (view filing) | Mar 20 | 3 days | Deschenes Roger P.CAO | PPurchase | +10.0K | $2.23 | +$22.3K | +23.3%53.0K after | |
| Mar 23, 2026 (view filing) | Mar 20 | 3 days | Rangesh AbinandChief Executive Officer | PPurchase | +3.00K | $2.30 | +$6.90K | +4.7%67.2K after | |
| Jul 14, 2025 (view filing) | Jun 3-24 | 41 days | Panora Robert ACOO and President | SSale | −102.7K | $5.36 | −$550.8K | −62.2%62.5K after | Amended5 lots |
| Jun 24, 2025 (view filing) | Mar 3 | 113 daysLate | Lafaille StephenVP of Business Development | PPurchase | +400 | $2.50 | +$1.00K | New position400 after |
Top 10 13F holders, Q2 2026
See all 69 holdersThe largest institutional positions in Tecogen Inc. at the end of Q2 2026; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Portolan Capital Management, LLC | 1,551,113 | $8.10M | 0.30% | +1,107,558+249.7% | Added |
| Vanguard Capital Management LLC | 788,670 | $4.12M | 0.00% | +18,706+2.4% | Added |
| Bard Associates Inc | 682,221 | $3.56M | 0.79% | −6,088−0.9% | Reduced |
| Clear Harbor Asset Management, LLC | 650,000 | $3.39M | 0.21% | 00.0% | Unchanged |
| Herald Investment Management Ltd | 420,000 | $2.19M | 0.30% | 00.0% | Unchanged |
| Gratia Capital, LLC | 388,660 | $2.03M | 2.33% | +388,660 | New |
| UBS Group AG | 363,049 | $1.90M | 0.00% | +43,213+13.5% | Added |
| Meros Investment Management, LP | 353,487 | $1.85M | 0.59% | +61,782+21.2% | Added |
| Palisades Investment Partners, LLC | 323,090 | $1.69M | 0.48% | −10,817−3.2% | Reduced |
| Susquehanna International Group, LLP | 315,831 | $1.65M | 0.00% | +206,374+188.5% | Added |
Holders of 5% or more of TGEN
See all 1 holders and filingsHolders whose latest Schedule 13D or 13G filing reports 5% or more of Tecogen Inc..
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Portolan Capital Management, LLC | 13G | 5.19%1.55M shares | New | Jun 10, 20261 filing | Jun 10, 2026 | SEC |