John K. Whiting IV

Insider Reports History

Identity Names, identifiers, and filing context for this profile. 1 identity field
Reporting-owner location
Boxford, MA
SEC source record Original filing metadata and source links for verification. 1 source field
Latest reporting-owner signature
/s/ John K. Whiting, IV
Source: Latest parsed Forms 3/4/5 signature
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 John K. Whiting IV

Form 4 holding General Counsel & Secretary

TECOGEN INC.

Security class
Stock Option (Right to Buy)
Shares / value
424,075
Estimated value
$3,541,026
Report date
24 Jul 2025
Price
$8.35
Ownership
Direct
Underlying class
Common Stock
Underlying amount
Form 4 holding General Counsel & Secretary

TECOGEN INC.

Security class
Common Stock
Shares / value
19,342
Estimated value
$49,515
Report date
26 Jun 2026
Price
$2.56
Ownership
Direct

Insider Reports Filed by John K. Whiting IV

We use cookies and similar technologies to provide certain features, enhance the user experience and, if you allow them, measure engagement and deliver advertising. Analytics and marketing storage stay off until you grant consent. By clicking on "Agree and continue", you declare your consent to the use of the selected optional cookies. Manage preferences to update or revoke optional consent for future visits. For more information, see our Privacy Policy .