Form 4 - Statement of changes in beneficial ownership of securities:
SEC Accession No. 0001827663-26-000004
Filing Date
2026-04-14
Accepted
2026-04-14 16:03:22
Documents
1
Period of Report
2026-04-13

Document Format Files

Seq Description Document Type Size
1 FORM 4 wk-form4_1776197000.html 4  
1 FORM 4 wk-form4_1776197000.xml 4 3087
  Complete submission text file 0001827663-26-000004.txt   4630
Mailing Address 76 TREBLE COVE ROAD BLDG. 1 NORTH BILLERICA MA 01862
Business Address 76 TREBLE COVE ROAD BLDG. 1 NORTH BILLERICA MA 01862 781-466-6400
TECOGEN INC. (Issuer) CIK: 0001537435 (see all company filings)

EIN.: 043536131 | State of Incorp.: DE | Fiscal Year End: 1231
SIC: 3585 Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip
(CF Office: 06 Technology)

Mailing Address 280 OLD SOMERSET ROAD WATCHUNG NJ 07069
Business Address
Hirsch Susan B (Reporting) CIK: 0001827663 (see all company filings)

Type: 4 | Act: 34 | File No.: 001-36103 | Film No.: 26860834