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
10-K Annual report Mar 19, 2026 Dec 31, 2025
10-K Annual report Mar 18, 2025 Dec 31, 2024
10-K Annual report Mar 25, 2024 Dec 31, 2023
10-K Annual report Mar 23, 2023 Dec 31, 2022
10-K Annual report Mar 10, 2022 Dec 31, 2021
10-K Annual report Mar 18, 2021 Dec 31, 2020
10-K Annual report Mar 12, 2020 Dec 31, 2019
10-K Annual report Mar 29, 2019 Dec 31, 2018
10-K Annual report Mar 21, 2018 Dec 31, 2017
10-K Annual report Mar 23, 2017 Dec 31, 2016
10-K Annual report Mar 30, 2016 Dec 31, 2015
10-K Annual report Mar 25, 2015 Dec 31, 2014
10-K/A Amended annual report Apr 1, 2014 Dec 31, 2013
10-K Annual report Mar 31, 2014 Dec 31, 2013
10-K Annual report Mar 27, 2013 Dec 31, 2012

Showing 15 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.

New to this? Read What Are SEC Filings? 10-K, 10-Q, 8-K and Other Forms Explained.

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.