{"schema_version":"secwatch.filing_event.v1","accession":"0001628280-25-021421","form_type":"8-K","ticker":"TGEN","cik":"0001537435","company_name":"TECOGEN INC.","filed_at":"2025-05-01T23:59:59+00:00","discovered_at":"2026-05-14T18:02:48.687613+00:00","generated_at":"2026-05-23T00:20:41.610686+00:00","sec_items":["7.01","9.01"],"event_type":"other_material","sentiment":"positive","materiality_score":0.55,"calibrated_materiality_score":0.55,"confidence":"high","headline":"Tecogen approved for NYSE American listing; trading begins May 6 under TGEN","bullets":["Shares approved for listing on NYSE American; expected to start trading May 6, 2025.","Tecogen to trade under same symbol \"TGEN\" on NYSE American.","Current OTCQX trading continues until close of business on or about May 5, 2025.","No stockholder action required for the uplisting transition.","CEO states uplisting expected to enhance visibility, investor base, and liquidity."],"urls":{"canonical":"https://secwatch.observer/filing/0001628280-25-021421","json":"https://secwatch.observer/filing/0001628280-25-021421.json","markdown":"https://secwatch.observer/filing/0001628280-25-021421.md","text":"https://secwatch.observer/filing/0001628280-25-021421.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1537435/000162828025021421/0001628280-25-021421-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1537435/000162828025021421/tgen-20250430.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-23T00:20:41.610686+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"}