---
schema_version: "secwatch.filing_event.v1"
accession: "0001537435-25-000024"
form_type: "8-K"
ticker: "TGEN"
cik: "0001537435"
company_name: "TECOGEN INC."
filed_at: "2025-05-02T23:59:59+00:00"
generated_at: "2026-05-22T22:42:04.431194+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# Tecogen director converts $514K promissory note into 240,256 common shares at $2.14/share

## Summary
- Earl R. Lewis III converted outstanding debt of $514,148.22 (principal + interest) to 240,256 shares of common stock.
- Conversion price of $2.14 per share based on 30-trading-day average closing price.
- Note originally issued Sept. 18, 2024 with $500,000 principal; conversion extinguishes the liability.
- Transaction eliminates a $514K debt and increases diluted share count by 240,256.

## SEC filing metadata
- accession: 0001537435-25-000024
- form_type: 8-K
- ticker: TGEN
- cik: 0001537435
- company_name: TECOGEN INC.
- filed_at: 2025-05-02T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 1.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1537435/000153743525000024/0001537435-25-000024-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1537435/000153743525000024/tgen-20250501.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001537435-25-000024
- JSON: https://secwatch.observer/filing/0001537435-25-000024.json
- Plain text: https://secwatch.observer/filing/0001537435-25-000024.txt

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