Tecogen Inc. SEC filings TGEN
Tecogen Inc. has 688 filings in SEC EDGAR's recent list, going back to Dec 22, 2011. Its latest annual report, Form 10-K, was filed on Mar 19, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 13, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Oct 14, 2026 (other events). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| DEF 14A | Proxy statement | Apr 21, 2026 | Apr 21, 2026 |
| DEF 14A | Proxy statement | Apr 29, 2025 | Apr 29, 2025 |
| DEF 14A | Proxy statement | Apr 23, 2024 | Apr 23, 2024 |
| PRE 14A | Preliminary proxy statement | Apr 12, 2024 | Apr 12, 2024 |
| DEF 14A | Proxy statement | Apr 25, 2023 | Dec 31, 2022 |
| DEF 14A | Proxy statement | Apr 25, 2022 | Dec 31, 2021 |
| DEFA14A | Additional proxy material | Apr 22, 2020 | — |
| DEF 14A | Proxy statement | Apr 21, 2020 | Dec 31, 2019 |
| DEFA14A | Additional proxy material | Apr 24, 2019 | — |
| DEF 14A | Proxy statement | Apr 23, 2019 | Jun 6, 2019 |
| DEFA14A | Additional proxy material | Apr 25, 2018 | — |
| DEF 14A | Proxy statement | Apr 20, 2018 | May 11, 2018 |
| DEFA14A | Additional proxy material | May 12, 2017 | — |
| DEF 14A | Proxy statement | May 1, 2017 | Jun 29, 2017 |
| DEFA14A | Additional proxy material | Apr 28, 2017 | — |
| DEFA14A | Additional proxy material | May 5, 2016 | — |
| DEF 14A | Proxy statement | Apr 29, 2016 | Apr 29, 2016 |
| DEFA14A | Additional proxy material | May 11, 2015 | — |
| DEF 14A | Proxy statement | Apr 30, 2015 | Apr 30, 2015 |
| DEF 14C | Information statement | Jul 16, 2014 | Jun 30, 2014 |
| DEF 14C | Information statement | Jul 2, 2013 | Jul 2, 2013 |
| PRE 14C | Filing | Jun 21, 2013 | Jun 21, 2013 |
| DEF 14C | Information statement | Apr 25, 2013 | Apr 25, 2013 |
| PRE 14C | Filing | Apr 15, 2013 | Apr 15, 2013 |
| DEF 14C | Information statement | Apr 11, 2013 | Apr 10, 2013 |
Showing 25 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (SIC 3585)
- Listed as
- TGEN (NYSE)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- North Billerica, MA
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 1537435
- Former names
- TECOGEN INC (until Mar 27, 2013)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.