{"schema_version":"secwatch.filing_event.v1","accession":"0001537435-23-000157","form_type":"8-K","ticker":"TGEN","cik":"0001537435","company_name":"TECOGEN INC.","filed_at":"2023-12-14T23:59:59+00:00","discovered_at":"2026-05-14T18:03:29.422138+00:00","generated_at":"2026-06-07T12:47:52.105460+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"negative","materiality_score":0.3,"calibrated_materiality_score":0.3,"confidence":"high","headline":"Tecogen announces death of director Fred Holubow on December 9, 2023","bullets":["Director Fred Holubow passed away on December 9, 2023; board informed on December 12.","Holubow had served as director and Audit Committee member since June 2020.","Background included General Partner at Starbow Partners, formerly at William Harris Investors and co-founder of Pegasus Associates.","No successor has been announced in the filing."],"urls":{"canonical":"https://secwatch.observer/filing/0001537435-23-000157","json":"https://secwatch.observer/filing/0001537435-23-000157.json","markdown":"https://secwatch.observer/filing/0001537435-23-000157.md","text":"https://secwatch.observer/filing/0001537435-23-000157.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1537435/000153743523000157/0001537435-23-000157-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1537435/000153743523000157/tgen-20231212.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-07T12:47:52.105460+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":[{"claim_id":"9e9072aed1","claim":"Fred Holubow departed as director at TECOGEN INC..","evidence_excerpt":"the Board of Directors of Tecogen Inc. is deeply saddened to announce that, on December 12, 2023, it was informed of the death, on December 9, 2023, of Mr. Fred Holubow, a director of the company and a member of the board’s Audit Committee since June 2020.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1537435/000153743523000157/0001537435-23-000157-index.htm","confidence":1.0,"family_label":"Executive change","details":[{"label":"Action","value":"death"},{"label":"Role","value":"director"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}