{"schema_version":"secwatch.filing_event.v1","accession":"0001537435-24-000054","form_type":"8-K","ticker":"TGEN","cik":"0001537435","company_name":"TECOGEN INC.","filed_at":"2024-05-03T23:59:59+00:00","discovered_at":"2026-05-14T18:03:18.890262+00:00","generated_at":"2026-06-02T23:08:18.960172+00:00","sec_items":["1.01","9.01"],"event_type":"other_material","sentiment":"positive","materiality_score":0.55,"calibrated_materiality_score":0.55,"confidence":"high","headline":"Tecogen expands maintenance portfolio by 31 cogeneration units; 48 more potential","bullets":["Second Amendment effective May 1, 2024 adds maintenance agreements for 31 cogeneration units to Tecogen.","Aegis will use commercially reasonable efforts to support assignment of 48 additional units.","Amendment extends March 2023 agreement, increasing Tecogen's recurring service revenue stream."],"urls":{"canonical":"https://secwatch.observer/filing/0001537435-24-000054","json":"https://secwatch.observer/filing/0001537435-24-000054.json","markdown":"https://secwatch.observer/filing/0001537435-24-000054.md","text":"https://secwatch.observer/filing/0001537435-24-000054.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1537435/000153743524000054/0001537435-24-000054-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1537435/000153743524000054/tgen-20240501.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-02T23:08:18.960172+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":"f788a47d406388cd733a2a812ef57dcc9c770f1a","claim":"TECOGEN INC. amended Agreement Regarding Assignment of Certain Maintenance Agreements with Aegis Energy Services LLC (effective 2024-05-01).","evidence_excerpt":"Effective May 1, 2024 Tecogen Inc. (“Tecogen”) and Aegis Energy Services LLC (“Aegis”) amended the Agreement Regarding Assignment of Certain Maintenance Agreements dated as of March 15, 2023 by and between Tecogen and Aegis, as amended, to add to the agreements assigned to Tecogen by Aegis maintenance services agreements for thirty-one (31) cogeneration units (the “Second Amendment”).","evidence_source":"SEC 8-K Item 1.01/1.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1537435/000153743524000054/0001537435-24-000054-index.htm","confidence":0.4,"family_label":"Material Agreements","details":[{"label":"Action","value":"amendment"},{"label":"Counterparty","value":"Aegis Energy Services LLC"},{"label":"Effective","value":"2024-05-01"}],"fact_type":"material_agreement"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}