Revenue
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
Tecogen Inc. (TGEN)
Price—Loading quote
Net income
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
Free cash flow
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
Total cash / debt
CashTotal debt
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
Financial statements
| 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 | 2013 | 2012 | 2011 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Revenue | $27.1M | $22.6M | $25.1M | $25.0M | $24.4M | $28.3M | $33.4M | $35.9M | $33.2M | $24.5M | $21.4M | $19.3M | $15.8M | $15.3M | $11.1M |
| Gross profit | $9.8M | $9.9M | $10.2M | $11.1M | $11.6M | $10.8M | $12.5M | $13.6M | $13.0M | $9.3M | $7.6M | $6.4M | $5.0M | $5.9M | $4.9M |
| Gross margin | 36.29% | 43.64% | 40.58% | 44.26% | 47.49% | 38.32% | 37.33% | 37.88% | 39.02% | 37.98% | 35.60% | 33.08% | 31.74% | 38.45% | 44.16% |
| Research & development | $1.2M | $961,837 | $840,011 | $732,873 | $542,079 | $767,323 | $1.5M | $1.3M | $936,929 | $667,064 | $591,585 | $1.0M | $1.1M | $431,000 | — |
| Operating expenses | $18.1M | $14.4M | $14.6M | $13.4M | $12.8M | $16.8M | $17.1M | $19.1M | $12.7M | $10.3M | $10.3M | $10.1M | $8.7M | $7.9M | $6.8M |
| Operating income | −$8.2M | −$4.5M | −$4.4M | −$2.3M | −$1.2M | −$6.0M | −$4.7M | −$5.5M | $225,152 | −$997,451 | −$2.6M | −$3.7M | −$3.7M | −$2.0M | −$1.9M |
| Operating margin | −30.45% | −20.05% | −17.56% | −9.40% | −5.00% | −21.10% | −13.94% | −15.43% | 0.68% | −4.07% | −12.33% | −19.15% | −23.16% | −13.14% | −17.02% |
| EBITDA | −$7.4M | −$4.0M | −$3.8M | −$1.9M | −$749,238 | −$5.5M | −$4.2M | −$4.7M | $812,974 | −$733,446 | −$2.4M | −$3.4M | −$3.4M | −$1.8M | −$1.7M |
| EBITDA margin | −27.21% | −17.60% | −15.30% | −7.68% | −3.07% | −19.63% | −12.63% | −13.23% | 2.45% | −2.99% | −11.06% | −17.70% | −21.54% | −11.80% | −15.59% |
| Net income | −$8.2M | −$4.8M | −$4.6M | −$2.4M | $3.7M | −$6.2M | −$4.7M | −$5.7M | $47,436 | −$1.1M | −$2.7M | −$3.7M | −$3.4M | −$1.6M | −$1.6M |
| Net profit margin | −30.47% | −21.04% | −18.29% | −9.79% | 15.15% | −21.77% | −14.09% | −15.91% | 0.14% | −4.48% | −12.72% | −19.37% | −21.76% | −10.73% | −14.23% |
| Basic EPSper basic share | -$0.30 | -$0.19 | -$0.19 | -$0.10 | $0.15 | -$0.25 | -$0.19 | -$0.23 | $0.00 | -$0.06 | -$0.16 | -$0.24 | -$0.26 | -$0.12 | -$0.03 |
| Diluted EPSper diluted share | -$0.30 | -$0.19 | -$0.19 | -$0.10 | $0.15 | -$0.25 | -$0.19 | -$0.23 | $0.00 | -$0.06 | -$0.16 | -$0.24 | -$0.26 | -$0.12 | -$0.03 |
Owners
Reported shareholders
5.14%of listed shares
Portolan Capital Management, LLC1.55M shares · Jun 30, 2026
View holders
| Holder | % owned |
|---|---|
Portolan Capital Management, LLC | 5.14%1.55M shares |
Hatsopoulos John | ≈3.44%1.04M shares |
Lewis Earl | ≈3.35%1.01M shares |
VANGUARD CAPITAL MANAGEMENT LLC | 2.61%788.67K shares |
BARD ASSOCIATES INC | 2.26%682.22K shares |
Clear Harbor Asset Management, LLC | 2.15%650K shares |
HERALD INVESTMENT MANAGEMENT Ltd | 1.39%420K shares |
GRATIA CAPITAL, LLC | 1.29%388.66K shares |
UBS Group AG | 1.20%363.05K shares |
Meros Investment Management, LP | 1.17%353.49K shares |
Palisades Investment Partners, LLC | 1.07%323.09K shares |
SUSQUEHANNA INTERNATIONAL GROUP, LLP | 1.05%315.83K shares |
MORGAN STANLEY | 1.00%301.7K shares |
RAYMOND JAMES FINANCIAL INC | 0.96%290.26K shares |
Hirsch Susan B | ≈0.88%265.42K shares |
BlackRock, Inc. | 0.83%251.46K shares |
CITADEL ADVISORS LLC | 0.80%242.28K shares |
Huntleigh Advisors, Inc. | 0.73%220.07K shares |
HEARTLAND ADVISORS INC | 0.60%182.1K shares |
GEODE CAPITAL MANAGEMENT, LLC | 0.60%180.87K shares |
Percentages use 30.18M shares of this listed class outstanding on Jun 30, 2026. ≈ compares the latest reported holding with a share total from a different date; it is not a confirmed current stake.
Gray completes the 100% scale. Reported positions may overlap; holders have different reporting dates.
Source: SEC Form 13F ↗Updated Sep 29, 2026 · Quarterly data
Insider buys & sells
| Transaction | Insider | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|
| Apr 24, 2026Form 4 | Ghoniem AhmedDirector | BuyCommon Stock | 12.7K | $0.79 | $10.1K | 12.7K |
| Apr 13, 2026Form 4 | Hirsch Susan BDirector | BuyCommon Stock | 5.0K | $3.73 | $18.6K | 265.4K |
| Mar 27, 2026Form 4 | Hirsch Susan BDirector | BuyCommon Stock | 10.0K | $2.54 | $25.4K | 260.4K |
| Mar 27, 2026Form 4 | Lewis EarlDirector | BuyCommon Stock | 5.0K | $2.52 | $12.6K | 1.01M |
| Mar 26, 2026Form 4 | Lewis EarlDirector | BuyCommon Stock | 5.0K | $2.88 | $14.4K | 1.01M |