# TECOGEN INC.: amended its Form S-1 to go public (2026-08-31)

**Score:** 50/100

| Field | Value |
|---|---|
| Company | TECOGEN INC. |
| Ticker | TGEN |
| CIK | 1537435 |
| Form | S-1 amendment (deal progressing) |
| Filed | 2026-08-31 |
| Industry | Manufacturing (incl. pharma and devices) |
| SIC | 3585 |
| Location | North Billerica, MA |
| SEC file number | 333-212433 |

## Why this score
- Amendment: the deal is moving.
- Operating company (not a SPAC or fund).

Source: SEC EDGAR Form S-1 and F-1 registration statements (full-text search index) (https://www.sec.gov/Archives/edgar/data/1537435/000153743526000071/tgenpeano3tos-1.htm). Last refreshed: 2026-11-04T21:45:21.668Z.
From public SEC EDGAR filings. A registration statement is not a completed offering; many are amended, delayed or withdrawn. Informational only; not investment advice or an offer or solicitation to buy or sell any security.