Tecogen Inc

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Tecogen Inc
CIK #0001537435
EDGAR Form CIK 2011 - 2026
10-K [0001537435]
10-Q [0001537435]
3 [0001537435]
4 [0001537435]
5 [0001537435]
8-K [0001537435]
D [0001537435]
SC 13D [0001537435]
SC 13G [0001537435]
Form 13D/13G Filer Form 13D/13G Subject Filed
Portolan Capital Management LLC Tecogen Inc [2026-06-10]
Pacheco Ann Marie Brown Tecogen Inc [2022-05-10]
Pacheco Ann Marie Brown Tecogen Inc [2018-08-01]
Comeau Joseph Tecogen Inc [2018-05-22]
Tecogen Inc Tecogen Inc [2017-06-23]
Michaelson Capital Special Finance Fund LP Tecogen Inc [2017-02-14]
Natsis Tryfon Tecogen Inc [2017-02-01]
Wincrest Capital Ltd Tecogen Inc [2016-11-25]
Michaelson Capital Special Finance Fund LP Tecogen Inc [2016-02-19]
Michaelson Capital Special Finance Fund LP Tecogen Inc [2015-02-23]
View All
Form 3/4/5 Subject 2011 - 2026
Galiteva Angelina
Tecogen Inc
Rangesh Abinand
Hirsch Susan B
Albertine John M
Lewis Earl
Ghoniem Ahmed
Whiting John Kimball IV
Lafaille Stephen
Deschenes Roger P
Panora Robert
Hatsopoulos John
Holubow Fred
Jenkins Ralph
Pacheco Ann Marie Brown
Benjamin Locke M
Petersen Deanna M
Brown Bonnie Jean
Monovoukas Yiannis
Maxwell Charlest
Davidson Keith
Garrison David A
Hatsopoulos George N
AOUN Joseph E
Hatsopoulos Family 2012 Trust
J&P Enterprises LLC
Insider Transaction (Form 3/4/5) Date Action Shares Price Value ($)
Tecogen Inc TGEN
Common Stock
2026-03-27 Buy 10,000 $2.54 25,400
Tecogen Inc TGEN
Common Stock
2026-03-27 Buy 5,000 $2.52 12,600
Tecogen Inc TGEN
Common Stock
2026-03-26 Buy 5,000 $2.88 14,400
Tecogen Inc TGEN
Common Stock
2026-03-23 Buy 10,000 $2.38 23,800
Tecogen Inc TGEN
Common Stock
2026-03-20 Buy 10,000 $2.23 22,300
Tecogen Inc TGEN
Common Stock
2026-03-20 Buy 3,000 $2.30 6,900
Tecogen Inc TGEN
Common Stock
2026-03-20 Option exercise 50,000 $0.88 44,000
Tecogen Inc TGEN
Stock Option (Right to Buy) · derivative
2026-03-20 Option exercise 50,000 $0.88 44,000
Tecogen Inc TGEN
Common Stock
2025-07-24 Grant 11,976 $0.00
Tecogen Inc TGEN
Common Stock
2025-07-24 Grant 11,976 $0.00
Tecogen Inc TGEN
Common Stock
2025-07-24 Grant 17,964 $0.00
Tecogen Inc TGEN
Common Stock
2025-07-24 Grant 53,892 $0.00
Tecogen Inc TGEN
Stock Option (Right to Buy) · derivative
2025-07-24 Grant 25,000 $8.35 208,750
Tecogen Inc TGEN
Stock Option (Right to Buy) · derivative
2025-07-24 Grant 24,075 $8.35 201,026
Tecogen Inc TGEN
Stock Option (Right to Buy) · derivative
2025-07-24 Grant 24,075 $8.35 201,026
Tecogen Inc TGEN
Stock Option (Right to Buy) · derivative
2025-07-24 Grant 12,063 $8.35 100,726
Tecogen Inc TGEN
Stock Option (Right to Buy) · derivative
2025-07-24 Grant 12,048 $8.35 100,601
Tecogen Inc TGEN
Stock Option (Right to Buy) · derivative
2025-07-24 Grant 24,075 $8.35 201,026
Tecogen Inc TGEN
Stock Option (Right to Buy) · derivative
2025-07-24 Grant 25,000 $8.35 208,750
Tecogen Inc TGEN
Stock Option (Right to Buy) · derivative
2025-07-24 Grant 25,000 $8.35 208,750
showing 20 of 200 most recent transactions
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