TECOGEN INC. — 424B3 Filings
8 424B3 filings on record
This page lists all 424B3 filings submitted to the SEC by TECOGEN INC. (TGEN), sorted by most recent first. Each row links to the full filing on EdgarLookup. TECOGEN INC. has filed 8 424B3 documents with the SEC since 2011. To view all SEC filings by TECOGEN INC., see the full filings list.
All
10-K
10-K/A
10-Q
25
3
3/A
4
4/A
424B3
424B4
425
5
8-A12B
8-A12G
8-K
8-K/A
AW
CERT
CERTNAS
CORRESP
CT ORDER
D
DEF 14A
DEF 14C
DEFA14A
DRS
EFFECT
POS AM
PRE 14A
PRE 14C
RW
S-1
S-1/A
S-1MEF
S-3
S-3/A
S-4
S-4/A
S-8
S-8 POS
SC 13D
SC 13D/A
SC 13G
SC 13G/A
SCHEDULE 13G/A
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| 424B3 | 424B3 | 0001537435-25-000044 | May 22, 2025 | — |
| 424B3 | 424B3 | 0001537435-25-000043 | May 22, 2025 | — |
| 424B3 | 424B3 | 0001537435-22-000083 | Jul 1, 2022 | — |
| 424B3 | 424B3 | 0001537435-21-000025 | Mar 23, 2021 | — |
| 424B3 | PROXY STATEMENT / PROSPECTUS | 0001537435-17-000051 | Apr 27, 2017 | — |
| 424B3 | 424B3 | 0001537435-15-000075 | Oct 5, 2015 | — |
| 424B3 | 424B3 | 0001537435-14-000121 | Dec 24, 2014 | — |
| 424B3 | 424B3 SUPPLEMENT #1 PROSPECTUS FILED JUNE 27, 2014 | 0001537435-14-000079 | Oct 8, 2014 | — |