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$ Value

$514K

Shares

240,256

Price

$2

Filed

May 5

Insider

Name

LEWIS EARL R

Title

CIK

0001230427

Roles

Director

Transaction Details

Transaction Date

2025-05-01

Code

J

Table

Non-Derivative

Ownership

Direct

Equity Swap

No

Shares After

967,256

Footnotes

Shares issued as payment of principal and accrued interest on Tecogen Inc. promissory note dated September 18, 2024 in favor of Mr. Lewis.

Filing Info

Accession No.

0001537435-25-000027

Form Type

4

Issuer CIK

0001537435

LEWIS EARL R's History

Date Ticker Type Value
2026-03-27 TGEN $13K
2026-03-26 TGEN $14K
2025-07-24 TGEN A $209K
2025-05-06 TGEN X $26K
2025-05-06 TGEN X $15K
2025-05-06 TGEN X $7K
2025-05-01 TGEN J $514K

Other Insiders at TGEN (90d)

Insider Bought Sold Last
Hirsch Susan B $44K 2026-04-13
Lewis Earl $27K 2026-03-27
Whiting John Kimball IV
General Counsel & Secretary
$24K 2026-03-23
Deschenes Roger P.
CAO
$22K 2026-03-20
Rangesh Abinand
Chief Executive Officer
$7K 2026-03-20
Hatsopoulos John 2026-03-20