{"schema_version":"secwatch.filing_event.v1","accession":"0001537435-26-000072","form_type":"8-K","ticker":"TGEN","cik":"0001537435","company_name":"TECOGEN INC.","filed_at":"2026-08-31T21:23:20+00:00","discovered_at":"2026-08-31T21:24:23.547403+00:00","generated_at":"2026-08-31T21:24:33.146073+00:00","sec_items":["8.01","9.1"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.4,"calibrated_materiality_score":0.4,"confidence":"high","headline":"Tecogen registers 4.5M shares for resale; Hatsopoulos trusts agree to 182-day lock-up","bullets":["Filed Form S-3 to register 4,507,603 shares of common stock for resale by selling stockholders.","Shares were acquired in private placements exempt from SEC registration; no offer until S-3 effective.","Hatsopoulos 2012 Family Trust and GST non-exempt QTIP Marital Trust (3,475,714 shares) signed lock-up agreements.","Lock-up restricts sales for 182 calendar days after SEC declares S-3 effective; limited exceptions apply.","Exceptions include transfers to trust beneficiaries, divorce court orders, and existing 10b5-1 plans."],"urls":{"canonical":"https://secwatch.observer/filing/0001537435-26-000072","json":"https://secwatch.observer/filing/0001537435-26-000072.json","markdown":"https://secwatch.observer/filing/0001537435-26-000072.md","text":"https://secwatch.observer/filing/0001537435-26-000072.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1537435/000153743526000072/0001537435-26-000072-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1537435/000153743526000072/tgen-20260831.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-08-31T21:24:33.146073+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}