Tecogen (TGEN) Director Gets 25,000 Options at $8.35 – Form 4 Filing

Form 4 snapshot: On 07/24/2025 Tecogen Inc. (TGEN) granted Director John M. Albertine 25,000 stock options at an exercise price of $8.35.

Rhea-AI Filing Summary

Form 4 snapshot: On 07/24/2025 Tecogen Inc. (TGEN) granted Director John M. Albertine 25,000 stock options at an exercise price of $8.35. The options vest 25 % per year, first exercisable 07/24/2026 and expiring 07/24/2035.

The award lifts Albertine’s directly held derivative position to 175,000 options. No purchases or sales of common shares were reported and no change was disclosed in non-derivative share ownership. The filing, signed 07/28/2025, appears to be a routine board compensation grant with no immediate cash flow or share-count impact.

Insights

Corporate Governance Analyst

Routine option grant; aligns director incentives, neutral impact.

The Form 4 discloses a standard equity award to a non-employee director. No cash outlay, no common-share sale, and no dilution until exercised. Size (25 k vs. 175 k cumulative) is modest and typical for board compensation. Vesting over four years encourages long-term focus but does not materially alter insider ownership or control. For investors, this is housekeeping rather than a directional signal.

Portfolio Manager

Neutral for valuation; no immediate share flow.

The 25,000 options are out-of-the-money until TGEN trades above $8.35, leaving near-term EPS and cash untouched. Potential dilution is well under 0.1 % of outstanding shares, immaterial to valuation models. Absent open-market buying or selling, the filing does not shift the risk/reward profile. I classify the event as informational only.

Insider Trade Summary

Grant/Award: 25,000 shares

Grant/Award 1 txn

Insider ALBERTINE JOHN M

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Stock Option (Right to Buy)	25,000	$8.35	$209K

Holdings After Transaction: Stock Option (Right to Buy) — 175,000 contracts (Direct)

Footnotes (1)

1. F1. Vests 25% per year

FAQ

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

What insider transaction did Tecogen (TGEN) report on 07/24/2025?

Grant of 25,000 stock options to Director John M. Albertine.

What is the exercise price of the newly granted options?

The exercise price is $8.35 per share.

How many derivative securities does the director now hold?

Following the grant, Albertine beneficially owns 175,000 stock options.

When do the options first become exercisable and when do they expire?

They become exercisable on 07/24/2026 and expire on 07/24/2035.

What is the vesting schedule for the options?

The award vests 25 % per year according to the filing.

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

Form 4 Insider Transactions: What Each Field Means →

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Accepted by SEC EDGAR 07/28/2025 - 12:40 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).

1. Name and Address of Reporting Person^*

ALBERTINE JOHN M

(Last) (First) (Middle)

100 FEDERAL DRIVE

(Street)

FREDERICKSBURG VA 22405

(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)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

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

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		25,000		07/24/2026(1)	07/24/2035	Common Stock	25,000	$8.35	175,000	D

Explanation of Responses:

1. Vests 25% per year

Remarks:

	/s/ John M. Albertine	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.
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