TECOGEN INC. reports

Company Names, identifiers, and filing context for this profile. 1 identity field
Company location
North Billerica, MA
SEC filing record 1 source field available
Fiscal year end
31 December
TECOGEN INC. has filed 687 SEC EDGAR filings since 22 Dec 2011

SEC filing history

Showing 1-25 of 687 matching filings.

Per page
25
Current page
1
4/A

FORM 4/A

Filing date
08 Sep 2026
Reporting date
26 Jun 2026
SEC evidence
Open document Open filing
Next action
Verify source filing
4/A

FORM 4/A

Filing date
08 Sep 2026
Reporting date
26 Jun 2026
SEC evidence
Open document Open filing
Next action
Verify source filing
4/A

FORM 4/A

Filing date
08 Sep 2026
Reporting date
26 Jun 2026
SEC evidence
Open document Open filing
Next action
Verify source filing
4/A

FORM 4/A

Filing date
08 Sep 2026
Reporting date
26 Jun 2026
SEC evidence
Open document Open filing
Next action
Verify source filing
4/A

FORM 4/A

Filing date
08 Sep 2026
Reporting date
26 Jun 2026
SEC evidence
Open document Open filing
Next action
Verify source filing
424B3 File 333-298673

424B3

Filing date
04 Sep 2026
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
Verify source filing
EFFECT File 333-298673

EFFECT filing

Filing date
03 Sep 2026
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
Verify source filing
EFFECT File 333-212433

EFFECT filing

Filing date
01 Sep 2026
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
Verify source filing
POS AM File 333-212433

POS AM

Filing date
01 Sep 2026
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
Verify source filing
S-1/A File 333-212433

S-1/A

Filing date
31 Aug 2026
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
Verify source filing
4

FORM 4

Filing date
30 Jun 2026
Reporting date
26 Jun 2026
SEC evidence
Open document Open filing
Next action
Verify source filing
4

FORM 4

Filing date
30 Jun 2026
Reporting date
26 Jun 2026
SEC evidence
Open document Open filing
Next action
Verify source filing
4

FORM 4

Filing date
30 Jun 2026
Reporting date
26 Jun 2026
SEC evidence
Open document Open filing
Next action
Verify source filing
4

FORM 4

Filing date
30 Jun 2026
Reporting date
26 Jun 2026
SEC evidence
Open document Open filing
Next action
Verify source filing
4

FORM 4

Filing date
30 Jun 2026
Reporting date
26 Jun 2026
SEC evidence
Open document Open filing
Next action
Verify source filing
4

FORM 4

Filing date
30 Jun 2026
Reporting date
26 Jun 2026
SEC evidence
Open document Open filing
Next action
Verify source filing
4

FORM 4

Filing date
30 Jun 2026
Reporting date
26 Jun 2026
SEC evidence
Open document Open filing
Next action
Verify source filing
4

FORM 4

Filing date
30 Jun 2026
Reporting date
26 Jun 2026
SEC evidence
Open document Open filing
Next action
Verify source filing
4

FORM 4

Filing date
30 Jun 2026
Reporting date
26 Jun 2026
SEC evidence
Open document Open filing
Next action
Verify source filing
4

FORM 4

Filing date
30 Jun 2026
Reporting date
26 Jun 2026
SEC evidence
Open document Open filing
Next action
Verify source filing
We use cookies and similar technologies to provide certain features, enhance the user experience and, if you allow them, measure engagement and deliver advertising. Analytics and marketing storage stay off until you grant consent. By clicking on "Agree and continue", you declare your consent to the use of the selected optional cookies. Manage preferences to update or revoke optional consent for future visits. For more information, see our Privacy Policy .