Stephen Lafaille

Insider Reports History

Identity Names, identifiers, and filing context for this profile. 1 identity field
Reporting-owner location
North Billerica, MA
SEC source record Original filing metadata and source links for verification. 1 source field
Latest reporting-owner signature
/s/ Stephen Lafaille
Source evidence Original filing metadata and source links for verification. 1 source field
Transaction source note
Rows are grouped by transaction date from the original SEC filing. Open the aggregated insider activity page to review issuer-level activity across dates.

Reported holdings for Stephen Lafaille

Form 4 holding VP of Business Development

TECOGEN INC.

Security class
Stock Option (Right to Buy)
Shares / value
72,937
Estimated value
$609,023
Report date
24 Jul 2025
Price
$8.35
Ownership
Direct
Underlying class
Common Stock
Underlying amount
Form 4 holding VP of Business Development

TECOGEN INC.

Security class
Common Stock
Shares / value
12,376
Estimated value
$84,269
Report date
24 Jul 2025
Price
$6.81
Ownership
Direct
Form 4 holding VP of Business Development

TECOGEN INC.

Security class
Stock Options (Right to Buy)
Shares / value
17,500
Estimated value
$19,250
Report date
23 Jun 2025
Price
$1.10
Ownership
Direct
Underlying class
Common Stock
Underlying amount

Insider Reports Filed by Stephen Lafaille

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