John K. Whiting IV - 24 Jul 2025 Form 4 Insider Report for TECOGEN INC. (TGEN)

Reporting relationship: General Counsel & Secretary
Issuer ticker: TGEN
Reported as of: 24 Jul 2025
Net transaction value: +$201,026
SEC form: 4
Accepted by SEC: 28 Jul 2025, 11:09:04 UTC
Prior SEC filing: 27 Sep 2023
Next SEC filing: 23 Mar 2026
Source filing: View source filing
Reporting owner signature: /s/ John K. Whiting, IV

Key filing fact

John K. Whiting IV filed Form 4 for TECOGEN INC. (TGEN) on 28 Jul 2025.

Key facts

This page summarizes John K. Whiting IV's Form 4 filing for TECOGEN INC. (TGEN).
2 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 28 Jul 2025, 11:09.

Change

Previous filing in this sequence was filed on 27 Sep 2023.
Current net transaction value: +$201,026.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001808199 Primary reporting owner

Whiting John Kimball IV

Relationship: General Counsel & Secretary
Address: 45 FIRST AVE., WALTHAM
Signature: /s/ John K. Whiting, IV
Signature date: 28 Jul 2025

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

TGEN transaction

Common Stock

Award

Transaction value: $0
Shares: +11,976
Change %: +1883%
Price: $0.000000
Shares after: 12,612
Date: 24 Jul 2025
Ownership: Direct
Footnotes: F1

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

TGEN transaction Derivative

Stock Option (Right to Buy)

Award

Transaction value: $201,026
Shares: +24,075
Change %: +6%
Price: $8.35
Shares after: 424,075
Date: 24 Jul 2025
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 24,075
Exercise price: $8.35
Footnotes: F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

Restricted Stock Award, vests 25% per year

Footnote F2

Vests 25% per year

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. to update or revoke optional consent for future visits. For more information, see our Privacy Policy .