Tecogen COO granted 9,671 restricted shares

COO and President Robert Panora received a restricted stock grant and corrected his reported Tecogen share holdings.

This filing corrects an earlier one, and you can read the original Form 4 if you want to see what changed.

Rhea-AI Filing Summary

TECOGEN INC. (symbol: TGEN) is the issuer of record for a Form 4/A filing submitted to the SEC. Panora Robert reported acquisition or exercise transactions in this Form 4 filing.

TECOGEN INC. (TGEN) reports that COO and President Robert Panora received a grant of 9,671 shares of common stock on June 26, 2026 as a restricted stock award under the Tecogen Inc. 2022 Stock Incentive Plan, with restrictions lapsing 25% per year. Following this award, his directly held beneficial ownership is 72,194 shares, correcting the previously reported post‑grant amount. No Rule 10b5‑1 trading plan is reported for this transaction.

Insider Trade Summary

Grant/Award: 9,671 shares

Grant/Award 1 txn

Insider Panora Robert

Role COO and President

Type	Security	Shares	Price	Value
Grant/Award	Common Stock F1, F2, F3	9,671	$0.00	$0.00

Holdings After Transaction: Common Stock — 72,194 shares (Direct)

Footnotes (3)

1. F1. Restricted stock award pursuant to Tecogen Inc. 2022 Stock Incentive Plan. Restrictions lapse 25% per year.
2. F2. Not applicable
3. F3. Corrected number of shares beneficially owned following restricted stock grant previously reported on Form 4 on June 30, 2026.

Key Figures

Restricted shares granted: 9,671 shares Grant price per share: $0.00 per share Shares beneficially owned after grant: 72,194 shares

3 metrics

Restricted shares granted 9,671 shares Restricted stock award on June 26, 2026

Grant price per share $0.00 per share Restricted stock award to Robert Panora

Shares beneficially owned after grant 72,194 shares Direct ownership following June 26, 2026 award

Key Terms

Restricted stock award, 2022 Stock Incentive Plan, beneficially owned

3 terms

Restricted stock award financial

"Restricted stock award pursuant to Tecogen Inc. 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 Tecogen Inc. 2022 Stock Incentive Plan."

beneficially owned financial

"Corrected number of shares beneficially owned following restricted stock grant"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

FAQ

What insider transaction did TECOGEN INC. (TGEN) report for Robert Panora?

TECOGEN reported that COO and President Robert Panora received a restricted stock award of 9,671 common shares on June 26, 2026, under the Tecogen Inc. 2022 Stock Incentive Plan, with restrictions lapsing 25% per year.

At what price were the TGEN shares granted to Robert Panora?

The 9,671 Tecogen common shares granted to Robert Panora were reported at a price of $0.00 per share, consistent with a compensatory restricted stock award under the company’s 2022 Stock Incentive Plan.

How many TGEN shares does Robert Panora beneficially own after this grant?

After the restricted stock grant, Robert Panora beneficially owns 72,194 Tecogen common shares directly. The amendment states this corrects the number of shares previously reported as owned following the June 26, 2026 grant.

Why was this Form 4/A amendment filed for TECOGEN INC. (TGEN)?

The amendment was filed to correct the number of shares beneficially owned by Robert Panora after the June 26, 2026 restricted stock grant that had been reported on a prior Form 4 filed on June 30, 2026.

Was Robert Panora’s TGEN restricted stock grant under a Rule 10b5-1 trading plan?

No. The filing indicates no Rule 10b5-1 trading plan for this transaction; it is a compensatory restricted stock award under Tecogen’s 2022 Stock Incentive Plan.

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

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Available on EDGAR 09/08/2026 - 05:11 PM Accepted by SEC EDGAR 09/08/2026 - 05:11 PM 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^*

Panora Robert

(Last) (First) (Middle)

C/O TECOGEN, INC.

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)
	COO and President

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)
06/30/2026

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		9,671	A	$0(2)	72,194(3)	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 Tecogen Inc. 2022 Stock Incentive Plan. Restrictions lapse 25% per year.

2. Not applicable

3. Corrected number of shares beneficially owned following restricted stock grant previously reported on Form 4 on June 30, 2026.

Remarks:

Filed to amend Form 4 filed by Reporting Person on June 30, 2026.

	/s/ Robert A. Panora	09/08/2026
	** 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)