Tecogen counsel granted 19,342 restricted shares

Whiting John Kimball IV reported acquisition or exercise transactions in this Form 4 filing.

The filer has since corrected this document, so the figures below are the ones originally reported and some of them may have changed. Read the amended Form 4/A for what the company says now.

Rhea-AI Filing Summary

Whiting John Kimball IV reported acquisition or exercise transactions in this Form 4 filing.

TECOGEN INC. reported that its General Counsel & Secretary, John Kimball Whiting IV, received a grant of 19,342 shares of Common Stock as a restricted stock award under the 2022 Stock Incentive Plan. The award vests in four equal installments of 25% per year. Following this grant, he directly holds 19,342 shares.

Insider Trade Summary

Grant/Award: 19,342 shares

Grant/Award 1 txn

Insider Whiting John Kimball IV

Role General Counsel & Secretary

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	19,342	$0.00	$0.00

Holdings After Transaction: Common Stock — 19,342 shares (Direct)

Footnotes (2)

1. F1. Restricted Stock Award pursuant to 2022 Stock Incentive Plan. Vests 25% per year.
2. F2. Vests 25% per year.

Key Figures

Restricted stock granted: 19,342 shares Vesting rate: 25% per year Transaction price: $0.0000 per share +1 more

4 metrics

Restricted stock granted 19,342 shares Common Stock award to General Counsel & Secretary

Vesting rate 25% per year Restricted Stock Award under 2022 Stock Incentive Plan

Transaction price $0.0000 per share Equity grant, not market purchase

Shares owned after grant 19,342 shares Direct ownership following the transaction

Key Terms

Restricted Stock Award, 2022 Stock Incentive Plan, vests 25% per year, Form 4

4 terms

Restricted Stock Award financial

"Restricted Stock Award pursuant to 2022 Stock Incentive Plan."

A restricted stock award is company shares given to an employee or executive that cannot be sold or fully owned until certain conditions—like staying with the company for a set time or hitting performance targets—are met. Think of it as a gift that only becomes yours after you fulfill specific obligations; for investors, these awards matter because they can increase the total shares outstanding when they vest, reveal how management is being paid and motivated, and create potential selling pressure when restrictions lift.

2022 Stock Incentive Plan financial

"Restricted Stock Award pursuant to 2022 Stock Incentive Plan."

vests 25% per year financial

"Restricted Stock Award pursuant to 2022 Stock Incentive Plan. Vests 25% per year."

Form 4 regulatory

"INSIDER FILING DATA (Form 4):"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did TECOGEN INC. (TGEN) report for John Kimball Whiting IV?

TECOGEN INC. reported that General Counsel & Secretary John Kimball Whiting IV received a grant of 19,342 shares of Common Stock. This is a restricted stock award made at no purchase price, reflecting equity-based compensation rather than an open-market stock purchase.

How many TECOGEN INC. (TGEN) shares were granted in this Form 4 filing?

The Form 4 shows a grant of 19,342 shares of TECOGEN INC. Common Stock. These shares were awarded as a restricted stock grant and not bought in the market, and the insider’s direct holdings after the transaction total the same 19,342 shares.

What does the vesting schedule look like for the TECOGEN (TGEN) restricted stock award?

The restricted stock award vests 25% per year, in four equal annual installments. This means the recipient earns full ownership of the 19,342-share grant gradually over four years, aligning the compensation with longer-term service and performance at TECOGEN INC.

Was the TECOGEN INC. (TGEN) insider transaction a market buy or a compensation grant?

The transaction was a compensation grant, not a market purchase. The Form 4 labels it as a restricted stock award with a transaction price of $0.0000 per share, meaning the insider did not pay cash and received the shares as part of equity compensation.

Which TECOGEN INC. (TGEN) executive is involved in this Form 4 restricted stock award?

The award involves John Kimball Whiting IV, who serves as General Counsel & Secretary of TECOGEN INC. He is the reporting person on the Form 4 and now directly owns 19,342 shares of Common Stock following this restricted stock grant.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 06/30/2026 - 08:36 PM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Whiting John Kimball IV

(Last) (First) (Middle)

76 TREBLE COVE ROAD

BLDG 1

(Street)

N. BILLERICA MASSACHUSETTS 01862

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
TECOGEN INC. [ TGEN ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	General Counsel & Secretary

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/26/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock(1)	06/26/2026		A		19,342	A	(1)	19,342(2)	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Restricted Stock Award pursuant to 2022 Stock Incentive Plan. Vests 25% per year.

2. Vests 25% per year.

Remarks:

	/s/ John K. Whiting, IV	06/30/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)