Tecogen Inc. (TGEN) SEC Filings

Tecogen Inc. (TGEN) SEC EDGAR filings (S-1/A, 8-K, 10-Q, DEF 14A, 10-K, S-1), newest first; latest S-1/A filed 2026-08-31. Every filing links to the canonical SEC document. First-party data.

SEC filings — source: EDGAR

Filed	Form	Title
2026-08-31	S-1/A	S-1/A filed 2026-08-31 by TECOGEN INC.
2026-08-31	8-K	8-K filed 2026-08-31 by TECOGEN INC.
2026-08-13	10-Q	10-Q filed 2026-08-13 by TECOGEN INC.
2026-08-12	8-K	8-K filed 2026-08-12 by TECOGEN INC.
2026-07-01	8-K	8-K filed 2026-07-01 by TECOGEN INC.
2026-06-05	8-K	8-K filed 2026-06-05 by TECOGEN INC.
2026-05-13	10-Q	10-Q filed 2026-05-13 by TECOGEN INC.
2026-05-12	8-K	8-K filed 2026-05-12 by TECOGEN INC.
2026-04-21	DEF 14A	DEF 14A filed 2026-04-21 by TECOGEN INC.
2026-04-08	8-K	8-K filed 2026-04-08 by TECOGEN INC.
2026-03-19	10-K	10-K filed 2026-03-19 by TECOGEN INC.
2026-03-18	8-K	8-K filed 2026-03-18 by TECOGEN INC.
2026-01-07	8-K	8-K filed 2026-01-07 by TECOGEN INC.
2025-11-13	10-Q	10-Q filed 2025-11-13 by TECOGEN INC.
2025-11-12	8-K	8-K filed 2025-11-12 by TECOGEN INC.
2025-09-17	8-K	8-K filed 2025-09-17 by TECOGEN INC.
2025-09-04	8-K	8-K filed 2025-09-04 by TECOGEN INC.
2025-08-13	10-Q	10-Q filed 2025-08-13 by TECOGEN INC.
2025-08-12	8-K	8-K filed 2025-08-12 by TECOGEN INC.
2025-07-28	8-K	8-K filed 2025-07-28 by TECOGEN INC.
2025-07-21	8-K	8-K filed 2025-07-21 by TECOGEN INC.
2025-07-18	8-K	8-K filed 2025-07-18 by TECOGEN INC.
2025-07-16	S-1/A	S-1/A filed 2025-07-16 by TECOGEN INC.
2025-07-16	S-1/A	S-1/A filed 2025-07-16 by TECOGEN INC.
2025-07-16	S-1/A	S-1/A filed 2025-07-16 by TECOGEN INC.
2025-07-15	S-1	S-1 filed 2025-07-15 by TECOGEN INC.
2025-06-10	8-K	8-K filed 2025-06-10 by TECOGEN INC.
2025-05-13	10-Q	10-Q filed 2025-05-13 by TECOGEN INC.
2025-05-12	8-K	8-K filed 2025-05-12 by TECOGEN INC.
2025-05-02	8-K	8-K filed 2025-05-02 by TECOGEN INC.

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Data sourced from U.S. SEC EDGAR. Not personalized investment advice.