TECOGEN INC.

NYSE:TGEN

Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip·NORTH BILLERICA, MA

CEO

Rangesh Abinand

Financials

20 shown

Type	Period	Ended	Filed
10-Q	Q3 2025	9/30/25	11/13/25	→
10-Q	Q2 2025	6/30/25	8/13/25	→
10-Q	Q1 2025	3/31/25	5/13/25	→
10-K	FY 2024	12/31/24	3/18/25	→
10-Q	Q3 2024	9/30/24	11/14/24	→
10-Q	Q2 2024	6/30/24	8/8/24	→
↓

Earnings Releases (8-K)

23 shown

Filed	Period
11/12/25	Q4 FY2025	→
8/12/25	Q3 FY2025	→
5/12/25	Q2 FY2025	→
3/17/25	Q1 FY2025	→
11/14/24	Q4 FY2024	→
8/8/24	Q3 FY2024	→
↓

News (8-K)

57 shown

Filed	Type	Description
1/7/26	Reg FD	Regulation FD Disclosure	→
9/17/25	Reg FD	Regulation FD Disclosure	→
9/4/25	Other	Other Events	→
7/28/25	Exec Change	Departure or Appointment of Directors or Certain Officers	→
7/21/25	Other	Other Events	→
7/18/25	Agreement	Entry into a Material Definitive Agreement	→
↓

Prospectuses & Registrations

40 shown

Filed	Form	Description
7/21/25	424B4	424B4	→
7/17/25	S-1MEF	S-1MEF	→
7/16/25	S-1/A	S-1/A	→
7/16/25	S-1/A	S-1/A	→
7/16/25	S-1/A	S-1/A	→
7/15/25	S-1	S-1	→
↓

Filing History(645 filings)

TypeDateAccessionPeriodSize

8-K

Jan 7, 2026

0001537435-26-0000038-K

Jan 6, 2026

131.5 KB

10-Q

Nov 13, 2025

0001537435-25-00014310-Q

Sep 30, 2025

8.3 MB

8-K

Nov 12, 2025

0001537435-25-0001418-K

Nov 12, 2025

2.1 MB

8-K

Sep 17, 2025

0001537435-25-0001378-K

Sep 17, 2025

163.9 KB

8-K

Sep 4, 2025

0001537435-25-0001348-K

Sep 2, 2025

122.5 KB

SCHEDULE 13G/A

Aug 14, 2025

0000905148-25-002985

—

6.8 KB

10-Q

Aug 13, 2025

0001537435-25-00013110-Q

Jun 30, 2025

8.2 MB

8-K

Aug 12, 2025

0001537435-25-0001298-K

Aug 12, 2025

2.4 MB

Jul 28, 2025

0001537435-25-000125FORM 4

Jul 24, 2025

5.2 KB

Jul 28, 2025

0001537435-25-000122FORM 4

Jul 24, 2025

6.7 KB

Jul 28, 2025

0001537435-25-000120FORM 4

Jul 24, 2025

6.7 KB

Jul 28, 2025

0001537435-25-000119FORM 4

Jul 24, 2025

6.7 KB

Jul 28, 2025

0001537435-25-000118FORM 4

Jul 24, 2025

8.7 KB

Jul 28, 2025

0001537435-25-000117FORM 4

Jul 24, 2025

5.1 KB

Jul 28, 2025

0001537435-25-000116FORM 4

Jul 24, 2025

5.1 KB

Jul 28, 2025

0001537435-25-000115FORM 4

Jul 24, 2025

5.2 KB

Jul 28, 2025

0001537435-25-000113FORM 4

Jul 24, 2025

5.1 KB

8-K

Jul 28, 2025

0001537435-25-0001118-K

Jul 24, 2025

169.3 KB

8-K

Jul 21, 2025

0001537435-25-0000978-K

Jul 21, 2025

145.8 KB

424B4

Jul 21, 2025

0001537435-25-000095424B4

—

663.0 KB

8-K

Jul 18, 2025

0001537435-25-0000928-K

Jul 18, 2025

428.1 KB

EFFECT

Jul 17, 2025

9999999995-25-002275

—

1.8 KB

S-1MEF

Jul 17, 2025

0001537435-25-000088S-1MEF

—

103.1 KB

S-1/A

Jul 16, 2025

0001537435-25-000086S-1/A

—

106.3 KB

S-1/A

Jul 16, 2025

0001537435-25-000083S-1/A

—

106.1 KB

25 filings shown

Filed	Form	Description
4/29/25	DEF 14A	DEF 14A	→
4/23/24	DEF 14A	DEF 14A	→
4/12/24	PRE 14A	PRE 14A	→
4/25/23	DEF 14A	DEF 14A	→
4/25/22	DEF 14A	DEF 14A	→
4/22/20	DEFA14A	DEFA14A	→
↓

TECOGEN INC.

Financials

Earnings Releases (8-K)

News (8-K)

Prospectuses & Registrations

Filing History(645 filings)

Proxies

Ownership

Other Filings

Filed	Form	Description
8/14/25	SCHEDULE 13G/A	SCHEDULE 13G/A	→
7/17/25	EFFECT	EFFECT	→
6/26/25	DRS	DRS	→
5/5/25	CERT	NYSE AMERICAN CERTIFICATION	→
5/5/25	8-A12B	8-A12B	→
3/9/22	8-A12G	8-A12G	→
↓