Tecogen SEC Filings
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At close: Oct 9, 4:00 PM ET · Delayed 15 min
Tecogen filing overview
This page lists 60 recent SEC filings by Tecogen (TGEN), including 28 4, 15 8-K, 5 4/A, 4 10-Q. The latest annual report (10-K) was filed on Mar 19, 2026 for the period ending Dec 31, 2025. The most recent quarterly report (10-Q) was filed on Aug 13, 2026.
The latest current report (8-K), used to disclose material events such as earnings releases and executive changes, was filed on Aug 31, 2026. Form 10-K is the audited annual report, 10-Q the quarterly report, 8-K covers material events, and Form 4 reports insider transactions. All documents link directly to SEC EDGAR.
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TGEN SEC filings
| Filed | Form | Description | Document |
|---|---|---|---|
| Sep 8, 2026 | 4/A | Statement of changes in beneficial ownership (amendment) | View on EDGAR |
| Sep 8, 2026 | 4/A | Statement of changes in beneficial ownership (amendment) | View on EDGAR |
| Sep 8, 2026 | 4/A | Statement of changes in beneficial ownership (amendment) | View on EDGAR |
| Sep 8, 2026 | 4/A | Statement of changes in beneficial ownership (amendment) | View on EDGAR |
| Sep 8, 2026 | 4/A | Statement of changes in beneficial ownership (amendment) | View on EDGAR |
| Sep 4, 2026 | 424B3 | Prospectus | View on EDGAR |
| Aug 31, 2026 | S-1/A | Registration statement (amendment) | View on EDGAR |
| Aug 31, 2026 | 8-K | Other Events | View on EDGAR |
| Aug 13, 2026 | 10-Q | Quarterly report | View on EDGAR |
| Aug 12, 2026 | 8-K | Results of Operations and Financial Condition; Regulation FD Disclosure | View on EDGAR |
| Jul 1, 2026 | 8-K | Departure or Appointment of Directors or Officers; Compensatory Arrangements | View on EDGAR |
| Jun 30, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Jun 30, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Jun 30, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Jun 30, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Jun 30, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Jun 30, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Jun 30, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Jun 30, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Jun 30, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Jun 30, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Jun 10, 2026 | SCHEDULE 13G | Beneficial ownership report (passive) | View on EDGAR |
| Jun 5, 2026 | 8-K | Submission of Matters to a Vote of Security Holders | View on EDGAR |
| May 13, 2026 | 10-Q | Quarterly report | View on EDGAR |
| May 12, 2026 | 8-K | Results of Operations and Financial Condition; Regulation FD Disclosure | View on EDGAR |
| Apr 27, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Apr 21, 2026 | DEF 14A | Definitive proxy statement | View on EDGAR |
| Apr 14, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Apr 8, 2026 | 8-K | Other Events | View on EDGAR |
| Mar 27, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Mar 27, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Mar 27, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Mar 23, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Mar 23, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Mar 23, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Mar 23, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Mar 19, 2026 | 10-K | Annual report | View on EDGAR |
| Mar 18, 2026 | 8-K | Results of Operations and Financial Condition; Regulation FD Disclosure | View on EDGAR |
| Jan 7, 2026 | 8-K | Regulation FD Disclosure | View on EDGAR |
| Nov 13, 2025 | 10-Q | Quarterly report | View on EDGAR |
| Nov 12, 2025 | 8-K | Results of Operations and Financial Condition; Regulation FD Disclosure | View on EDGAR |
| Sep 17, 2025 | 8-K | Regulation FD Disclosure | View on EDGAR |
| Sep 4, 2025 | 8-K | Other Events | View on EDGAR |
| Aug 14, 2025 | SCHEDULE 13G/A | Beneficial ownership report (passive) (amendment) | View on EDGAR |
| Aug 13, 2025 | 10-Q | Quarterly report | View on EDGAR |
| Aug 12, 2025 | 8-K | Results of Operations and Financial Condition; Regulation FD Disclosure | View on EDGAR |
| Jul 28, 2025 | 8-K | Departure or Appointment of Directors or Officers; Compensatory Arrangements; Other Events | View on EDGAR |
| Jul 28, 2025 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Jul 28, 2025 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Jul 28, 2025 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Jul 28, 2025 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Jul 28, 2025 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Jul 28, 2025 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Jul 28, 2025 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Jul 28, 2025 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Jul 28, 2025 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Jul 21, 2025 | 424B4 | Prospectus | View on EDGAR |
| Jul 21, 2025 | 8-K | Other Events | View on EDGAR |
| Jul 18, 2025 | 8-K | Entry into a Material Definitive Agreement; Other Events | View on EDGAR |
| Jul 16, 2025 | S-1/A | Registration statement (amendment) | View on EDGAR |