TECOGEN INC. — All Filings
654 total filings on record
Public companies registered with the SEC are required to file periodic reports, disclosures, and notices throughout the year. The most important are the 10-K (annual report), 10-Q (quarterly report), and 8-K (material event notice). Use the filters below to narrow by form type.
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 |
|---|---|---|---|---|
| 4 | FORM 4 | 0001827663-26-000002 | Mar 27, 2026 | — |
| 4 | FORM 4 | 0001230427-26-000002 | Mar 27, 2026 | — |
| 4 | FORM 4 | 0001537435-26-000024 | Mar 27, 2026 | Mar 26, 2026 |
| 4 | FORM 4 | 0001537435-26-000021 | Mar 23, 2026 | — |
| 4 | FORM 4 | 0001537435-26-000020 | Mar 23, 2026 | Mar 20, 2026 |
| 4 | FORM 4 | 0001537435-26-000019 | Mar 23, 2026 | Mar 20, 2026 |
| 4 | FORM 4 | 0001274775-26-000003 | Mar 23, 2026 | Mar 20, 2026 |
| 10-K | 10-K | 0001537435-26-000013 | Mar 19, 2026 | Dec 31, 2025 |
| 8-K | 8-K | 0001537435-26-000008 | Mar 18, 2026 | Mar 17, 2026 |
| 8-K | 8-K | 0001537435-26-000003 | Jan 7, 2026 | Jan 6, 2026 |
| 10-Q | 10-Q | 0001537435-25-000143 | Nov 13, 2025 | Sep 30, 2025 |
| 8-K | 8-K | 0001537435-25-000141 | Nov 12, 2025 | — |
| 8-K | 8-K | 0001537435-25-000137 | Sep 17, 2025 | — |
| 8-K | 8-K | 0001537435-25-000134 | Sep 4, 2025 | Sep 2, 2025 |
| SCHEDULE 13G/A | — | 0000905148-25-002985 | Aug 14, 2025 | — |
| 10-Q | 10-Q | 0001537435-25-000131 | Aug 13, 2025 | Jun 30, 2025 |
| 8-K | 8-K | 0001537435-25-000129 | Aug 12, 2025 | — |
| 4 | FORM 4 | 0001537435-25-000125 | Jul 28, 2025 | Jul 24, 2025 |
| 4 | FORM 4 | 0001537435-25-000122 | Jul 28, 2025 | Jul 24, 2025 |
| 4 | FORM 4 | 0001537435-25-000120 | Jul 28, 2025 | Jul 24, 2025 |
| 4 | FORM 4 | 0001537435-25-000119 | Jul 28, 2025 | Jul 24, 2025 |
| 4 | FORM 4 | 0001537435-25-000118 | Jul 28, 2025 | Jul 24, 2025 |
| 4 | FORM 4 | 0001537435-25-000117 | Jul 28, 2025 | Jul 24, 2025 |
| 4 | FORM 4 | 0001537435-25-000116 | Jul 28, 2025 | Jul 24, 2025 |
| 4 | FORM 4 | 0001537435-25-000115 | Jul 28, 2025 | Jul 24, 2025 |
| 4 | FORM 4 | 0001537435-25-000113 | Jul 28, 2025 | Jul 24, 2025 |
| 8-K | 8-K | 0001537435-25-000111 | Jul 28, 2025 | Jul 24, 2025 |
| 8-K | 8-K | 0001537435-25-000097 | Jul 21, 2025 | — |
| 424B4 | 424B4 | 0001537435-25-000095 | Jul 21, 2025 | — |
| 8-K | 8-K | 0001537435-25-000092 | Jul 18, 2025 | — |
| EFFECT | — | 9999999995-25-002275 | Jul 17, 2025 | — |
| S-1MEF | S-1MEF | 0001537435-25-000088 | Jul 17, 2025 | — |
| S-1/A | S-1/A | 0001537435-25-000086 | Jul 16, 2025 | — |
| S-1/A | S-1/A | 0001537435-25-000083 | Jul 16, 2025 | — |
| S-1/A | S-1/A | 0001537435-25-000081 | Jul 16, 2025 | — |
| CORRESP | — | 0001537435-25-000077 | Jul 15, 2025 | — |
| CORRESP | — | 0001537435-25-000076 | Jul 15, 2025 | — |
| S-1 | S-1 | 0001537435-25-000073 | Jul 15, 2025 | — |
| 4/A | FORM 4/A | 0001537435-25-000071 | Jul 14, 2025 | Jun 3, 2025 |
| 4/A | FORM 4/A | 0001537435-25-000069 | Jul 14, 2025 | May 27, 2025 |
| UPLOAD | — | 0000000000-25-006921 | Jul 1, 2025 | — |
| DRS | — | 0001537435-25-000067 | Jun 26, 2025 | — |
| 4 | FORM 4 | 0001537435-25-000064 | Jun 24, 2025 | Mar 3, 2025 |
| 3 | FORM 3 | 0001537435-25-000062 | Jun 24, 2025 | Apr 23, 2024 |
| 3 | FORM 3 | 0001537435-25-000060 | Jun 24, 2025 | Apr 23, 2024 |
| 4 | FORM 4 | 0001537435-25-000058 | Jun 20, 2025 | Jun 16, 2025 |
| 8-K | 8-K | 0001537435-25-000056 | Jun 10, 2025 | — |
| 4 | FORM 4 | 0001537435-25-000046 | Jun 2, 2025 | May 27, 2025 |
| 424B3 | 424B3 | 0001537435-25-000044 | May 22, 2025 | — |
| 424B3 | 424B3 | 0001537435-25-000043 | May 22, 2025 | — |