[Form 4] Tecogen Inc. Insider Trading Activity

Rhea-AI Filing Summary

Tecogen Inc. (TGEN) Form 4 filing: Chief Accounting Officer Roger P. Deschenes reported new equity awards dated 07/24/2025.

• Restricted stock: 17,964 common shares awarded at $0 cost; direct holdings rise to 42,962 shares.
• Stock options: 12,063 options granted with a $8.35 exercise price, expiring 07/24/2035; option balance increases to 152,063.

The awards vest 25% annually, providing long-term retention incentives and aligning the CAO’s interests with shareholders. No shares were sold or disposed of.

Positive

• Insider ownership increases: 17,964 new restricted shares raise direct holdings to 42,962, indicating commitment to the company.
• Long-dated options with a $8.35 strike provide performance incentive through 2035, potentially aligning management with shareholder returns.

Negative

• None.

Insights

Financial Analyst

TL;DR: Insider received stock & options, modestly positive signal.

The CAO’s acquisition of 17,964 restricted shares plus 12,063 options increases direct equity exposure without selling, suggesting confidence and aligning compensation with shareholder value. Although the absolute share count is small in market terms, accumulating 43k shares and 152k options could motivate performance toward the $8.35 strike. The grant is routine but directionally positive because it adds to insider ownership, often viewed favorably by investors tracking governance and incentives.

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).

1. Name and Address of Reporting Person^*

Deschenes Roger P.

(Last) (First) (Middle)

76 TREBLE COVE ROAD

(Street)

NORTH BILLERICA MA 01862

(City) (State) (Zip)

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)
	CAO

3. Date of Earliest Transaction (Month/Day/Year)
07/24/2025

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

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

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

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	07/24/2025		A		17,964(1)	A	$0	42,962	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
Stock Option (Right to Buy)	$8.35	07/24/2025		A		12,063		07/24/2025(2)	07/24/2035	Common Stock	12,063	$8.35	152,063	D

Explanation of Responses:

1. Restricted Stock Award, vests 25% per year

2. Vests 25% per year

Remarks:

	/s/ Roger P. Deschenes	07/28/2025
	** 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.

FAQ

How many Tecogen (TGEN) shares did the CAO acquire?

17,964 restricted shares were awarded on 07/24/2025.

What is the exercise price of the new Tecogen stock options?

The options carry a $8.35 exercise price and expire on 07/24/2035.

Did the insider sell any Tecogen shares in this filing?

No. The filing shows only acquisitions; no dispositions were reported.

How many Tecogen options does the insider own after the grant?

Roger P. Deschenes now holds 152,063 stock options.

What is the vesting schedule for the awards?

Both the restricted shares and the options vest at 25% per year.