{"url_path":"/sec/tgen/8-k/2026-06-05/cover-page","section_key":"cover-page","section_title":"Cover Page","topic":"sec","document":{"doc_type":"8-K","doc_date":"2026-06-05","source_url":"https://www.sec.gov/Archives/edgar/data/1537435/0001537435-26-000040-index.html","accession_number":"0001537435-26-000040","cik":"0001537435","ticker":"TGEN","issuer_name":"TECOGEN INC.","edgar_url":"https://www.sec.gov/Archives/edgar/data/1537435/0001537435-26-000040-index.html","primary_entity_key":"0001537435","primary_entity_name":"TECOGEN INC."},"word_count":293,"has_tables":true,"body_markdown":"tgen-20260605\nFALSE000153743500015374352024-05-092024-05-09\n\nUNITED STATES\n\nSECURITIES AND EXCHANGE COMMISSION\n\nWASHINGTON, D.C. 20549\n\n__________________________\n\n \n\nFORM 8-K\n\nCURRENT REPORT\n\nPURSUANT TO SECTION 13 OR 15(d) OF THE\n\nSECURITIES EXCHANGE ACT OF 1934\n\nDate of report (Date of earliest event reported): June 5, 2026\n\nTECOGEN INC.\n\n(Exact Name of Registrant as Specified in Charter)\n\nDelaware\n\n(State or Other Jurisdiction of Incorporation)\n\n001-36103 04-3536131\n\n(Commission File Number) (IRS Employer Identification No.)\n\n76 Treble Cove Road, Building 1\n\nNorth Billerica, Massachusetts 01862\n\n(Address of Principal Executive Offices and Zip Code)\n\n(781) 466-6400\n\n(Registrant's telephone number, including area code)\n\n \n\nSecurities registered or to be registered pursuant to Section 12(b) of the Act.\n\nTitle of each classTrading SymbolName of exchange on which registered\n\nCommon Stock, $0.001 par value per shareTGENNYSE American, LLC\n\nCheck the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:\n\n☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)\n\n☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)\n\n☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))\n\n☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))\n\nIndicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐\n\nIf an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o"}