---
schema_version: "secwatch.filing_event.v1"
accession: "0001537435-24-000015"
form_type: "8-K"
ticker: "TGEN"
cik: "0001537435"
company_name: "TECOGEN INC."
filed_at: "2024-02-05T23:59:59+00:00"
generated_at: "2026-06-06T09:07:23.617320+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# Tecogen adds maintenance pacts for 16 cogeneration units and 2 chillers from Aegis

## Summary
- Aegis assigns and Tecogen assumes maintenance agreements for 16 cogen units and 2 absorption chillers.
- Aegis will use commercially reasonable efforts to help Tecogen obtain agreements for 36 additional cogen units.
- Tecogen receives a fully paid, non-exclusive, irrevocable license to relevant IP for the assigned units.
- No financial terms (consideration, fees) disclosed in the amendment.

## SEC filing metadata
- accession: 0001537435-24-000015
- form_type: 8-K
- ticker: TGEN
- cik: 0001537435
- company_name: TECOGEN INC.
- filed_at: 2024-02-05T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 1.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1537435/000153743524000015/0001537435-24-000015-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1537435/000153743524000015/tgen-20240201.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001537435-24-000015
- JSON: https://secwatch.observer/filing/0001537435-24-000015.json
- Plain text: https://secwatch.observer/filing/0001537435-24-000015.txt

## Key facts
- Material Agreements
  TECOGEN INC. amended Amendment with Aegis Energy Services LLC (effective 2024-02-01).
  - Action: amendment
  - Counterparty: Aegis Energy Services LLC
  - Effective: 2024-02-01
  source text: Effective February 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 to add to the agreements assigned to Tecogen by Aegis maintenance services agreements for sixteen (16) cogeneration units and two (2) chillers (the “Amendment”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/1537435/000153743524000015/0001537435-24-000015-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.