{"schema_version":"secwatch.filing_event.v1","accession":"0001537435-23-000090","form_type":"8-K","ticker":"TGEN","cik":"0001537435","company_name":"TECOGEN INC.","filed_at":"2023-07-24T23:59:59+00:00","discovered_at":"2026-05-14T18:03:34.238944+00:00","generated_at":"2026-06-13T04:12:28.638514+00:00","sec_items":["8.01","9.01"],"event_type":"other","sentiment":"neutral","materiality_score":0.3,"calibrated_materiality_score":0.3,"confidence":"high","headline":"Tecogen extends advisory agreement with John N. Hatsopoulos through March 2026","bullets":["Advisory agreement term extended to March 28, 2026 via letter dated July 19, 2023.","Board approved amendment by unanimous written consent on July 19, 2023.","Company will reimburse Hatsopoulos for Medicare premiums up to employer's share of health plan costs.","Original agreement dated Jan 3, 2018; prior amendment July 22, 2019."],"urls":{"canonical":"https://secwatch.observer/filing/0001537435-23-000090","json":"https://secwatch.observer/filing/0001537435-23-000090.json","markdown":"https://secwatch.observer/filing/0001537435-23-000090.md","text":"https://secwatch.observer/filing/0001537435-23-000090.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1537435/000153743523000090/0001537435-23-000090-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1537435/000153743523000090/tgen-20230719.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-13T04:12:28.638514+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"}